U.S. patent application number 14/493581 was filed with the patent office on 2015-03-26 for endoscope sheath deflection devices.
The applicant listed for this patent is Gyrus ACMI, Inc. d.b.a Olympus Surgical Technologies America. Invention is credited to Ming J. Cheng, Gregory S. Konstorum.
Application Number | 20150087911 14/493581 |
Document ID | / |
Family ID | 51628501 |
Filed Date | 2015-03-26 |
United States Patent
Application |
20150087911 |
Kind Code |
A1 |
Konstorum; Gregory S. ; et
al. |
March 26, 2015 |
ENDOSCOPE SHEATH DEFLECTION DEVICES
Abstract
An endoscope sheath comprising: a tube having: a proximal end
having a proximal end region and a distal end; and a conduit that
extends through a portion of the endoscope sheath so that the
proximal end region of the endoscope sheath and the distal end of
the endoscope sheath are in fluid communication when an endoscope
is inserted inside the endoscope sheath; and wherein the endoscope
sheath is configured to receive all or a portion of the endoscope;
wherein the distal end of the endoscope sheath has a flow director
configured to direct irrigation fluid across a lens on the distal
end of the endoscope; and wherein the flow director is a flexible
flap.
Inventors: |
Konstorum; Gregory S.;
(Stamford, CT) ; Cheng; Ming J.; (W. Warwick,
RI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Gyrus ACMI, Inc. d.b.a Olympus Surgical Technologies
America |
Southborough |
MA |
US |
|
|
Family ID: |
51628501 |
Appl. No.: |
14/493581 |
Filed: |
September 23, 2014 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
61882652 |
Sep 26, 2013 |
|
|
|
Current U.S.
Class: |
600/157 ;
600/158 |
Current CPC
Class: |
A61B 2090/701 20160201;
A61B 1/06 20130101; A61B 1/00135 20130101; A61B 1/00119 20130101;
A61B 1/015 20130101; A61B 1/00128 20130101; A61B 1/126 20130101;
A61B 1/00068 20130101; A61B 1/00142 20130101; A61B 90/70
20160201 |
Class at
Publication: |
600/157 ;
600/158 |
International
Class: |
A61B 1/015 20060101
A61B001/015; A61B 1/00 20060101 A61B001/00; A61B 1/12 20060101
A61B001/12 |
Claims
1. An endoscope sheath comprising: a tube having: a proximal end
having a proximal end region and a distal end; and a conduit that
extends through a portion of the endoscope sheath so that the
proximal end region of the endoscope sheath and the distal end of
the endoscope sheath are in fluid communication when an endoscope
is inserted inside the endoscope sheath; and wherein the endoscope
sheath is configured to receive all or a portion of the endoscope;
wherein the distal end of the endoscope sheath has a flow director
configured to direct irrigation fluid across a lens on the distal
end of the endoscope; and wherein the flow director is a flexible
flap.
2. The endoscope sheath of claim 1, wherein the tube includes a
slot and at least a portion of the flexible flap extends through
the slot.
3. The endoscope sheath of claim 2, wherein the flexible flap is
free of extension across a viewing lens, a viewing port, or both of
the endoscope so that optics of the endoscope are not impeded by
the flexible flap.
4. The endoscope sheath of claim 1, wherein the flexible flap is
sufficiently flexible so that movement of fluid from the endoscope
sheath moves the flexible flap to an open position.
5. The endoscope sheath of claim 1, wherein the flexible flap is
elastically deformable or sufficiently rigid so that the flexible
flap is self-closing after a fluid apply.
6. The endoscope sheath of claim 1, wherein the flexible flap
covers the conduit or a portion of the conduit when the flexible
flap is in the closed position.
7. An endoscope sheath comprising: a proximal end having a proximal
end region and a distal end; a conduit creating fluid communication
between the proximal end region of the endoscope sheath and the
distal end of the endoscope sheath when an endoscope is inserted
inside the endoscope sheath; and a flow director at the distal end
of the endoscope sheath; and wherein the distal end of the
endoscope sheath has a first hole sized to fit around a distal end
of the endoscope and at least partially align with a viewing lens,
a visual port, or both of the endoscope so that the endoscope can
view features of interest through the first hole, and wherein the
flow director is configured as a flange including one or more
second holes that are configured to direct irrigation flow distally
from the endoscope and into a surgical site.
8. The endoscope sheath of claim 7, wherein the endoscope sheath
includes a longitudinal axis and the one or more second holes
extends substantially parallel to the longitudinal axis.
9. The endoscope sheath of claim 7, wherein the endoscope sheath
includes a longitudinal axis and the one or more second holes
extends at an angle of about 15 degrees or more or about 90 degrees
or less from the longitudinal axis.
10. The endoscope sheath of claim 9, wherein the endoscope sheath
includes a longitudinal axis and the one or more second holes
extends at an angle from about 30 degrees to about 75 degrees.
11. The endoscope sheath of claim 7, wherein the second hole is
round, oblong, a slit, or a combination thereof.
12. The endoscope sheath of claim 7, wherein the flow director is a
separate piece that connects to a distal end of the endoscope
sheath.
13. The endoscope sheath of claim 12, wherein the flow director
includes a pair of connecting arms that grip the endoscope sheath
and form a fixed connection with the distal end of the endoscope
sheath.
14. An endoscope sheath comprising: a proximal end and a distal
end; a flow director connected to the distal end of the endoscope
sheath, the flow director including: one or more connection arms
that form a fixed connection with an endoscope, a endoscope sheath,
or both; a channel extending through the flow director that directs
flow of an irrigation fluid across a distal end of the endoscope;
and wherein flow of the irrigation fluid is changed from a first
direction to a second direction by the flow director.
15. The endoscope sheath of claim 14, wherein the channel extends
between a radially extending lip and a cross bar.
16. The endoscope sheath of claim 14, wherein a front wall changes
the flow of the irrigation fluid from the first direction to the
second direction so that the flow is directed across a face of an
endoscope.
17. The endoscope sheath of claim 14, wherein an area of the
channel varies along its length.
18. The endoscope sheath of claim 14, wherein a width of the
channel at one end is narrower than a width of the channel at an
opposing end.
19. The endoscope sheath of claim 14, wherein the flow director is
offset from the distal end of the endoscope sheath so that a center
of an opening of the endoscope sheath and a center of the flow
director are offset.
Description
FIELD
[0001] The present teachings generally relate to an endoscope
sheath that receives all or a portion of an endoscope and more
specifically to a deflection device at a distal end of the
endoscope sheath that directs irrigation fluid from the distal end
in a predetermined manner.
BACKGROUND
[0002] Endoscopes are typically used for minimally invasive surgery
or to provide access to an internal location of a patient so that a
doctor is provided with visual access. Endoscopes, during use, may
be inserted into a location that may include debris that may cover
the end of the endoscope and especially cover an imaging device
located at the end of the endoscope. For example, an endoscope
being used for surgery may become covered by blood and the blood
may impair the vision of a surgeon so that surgery becomes
increasingly difficult. Attempts have been made to provide various
devices to assist a surgeon in clearing the debris from the imaging
device of the endoscope and restore vision. These devices may
remove some of the debris from the imaging device of the endoscope,
however, these devices may not remove all of the debris and/or may
leave spots on the imaging device, which may result in continued
impairment. These devices may have features that attempt to control
the flow of fluid, suction, or both at the end of the endoscope in
an attempt to clear debris from the endoscope. Further, many of the
features at the end of the sheath are configured to align the
sheath with the endoscope and these feature perform little if any
directing of fluid across the end of the endoscope.
[0003] Examples of some endoscope cleaning devices may be found in
U.S. Pat. Nos. 5,413,092; 5,575,756; 5,989,183; 6,110,103;
6,447,446; 7,811,228; and 8,079,952, all of which are incorporated
by reference in their entirety herein for all purposes. It would be
attractive to have an endoscope sheath having an alignment device
(i.e., an arm) that aligns a tip of an endoscope sheath with
endoscope tips of various viewing angles. It would be attractive to
have an endoscope sheath that directs fluid and/or suction across a
distal end of the endoscope so that debris and other imagine
blocking substances are removed from the distal tip of the
endoscope. It would be attractive to have an endoscope sheath that
angles fluid and/or suction across the imaging sensor of the
endoscope so that the imaging sensor is cleared of debris, fluid
spots, droplets, and interference. What is needed is an endoscope
sheath that is configured to receive fluid, suction, one or more
functional devices, or a combination thereof so that the fluid,
suction, one or more functional devices, or a combination thereof
are extended across a distal end of the endoscope.
SUMMARY
[0004] The present teachings meet one or more of the present needs
by providing: an endoscope sheath comprising: a tube having: a
proximal end having a proximal end region and a distal end; and a
conduit that extends through a portion of the endoscope sheath so
that the proximal end region of the endoscope sheath and the distal
end of the endoscope sheath are in fluid communication when an
endoscope is inserted inside the endoscope sheath; and wherein the
endoscope sheath is configured to receive all or a portion of the
endoscope; wherein the distal end of the endoscope sheath has a
flow director configured to direct irrigation fluid across a lens
on the distal end of the endoscope; and wherein the flow director
is a flexible flap.
[0005] Another possible embodiment of the present teachings
comprises: an endoscope sheath comprising: a proximal end having a
proximal end region and a distal end; a conduit creating fluid
communication between the proximal end region of the endoscope
sheath and the distal end of the endoscope sheath when an endoscope
is inserted inside the endoscope sheath; and a flow director at the
distal end of the endoscope sheath; and wherein the distal end of
the endoscope sheath has a first hole sized to fit around a distal
end of the endoscope and at least partially align with a viewing
lens, a visual port, or both of the endoscope so that the endoscope
can view features of interest through the first hole, and wherein
the flow director is configured as a flange including one or more
second holes that are configured to direct irrigation flow distally
from the endoscope and into a surgical site.
[0006] Yet another possible embodiment of the present teachings
provides: an endoscope sheath comprising: a proximal end and a
distal end; a flow director connected to the distal end of the
endoscope sheath, the flow director including: one or more
connection arms that form a fixed connection with an endoscope, a
endoscope sheath, or both; a channel extending through the flow
director that directs flow of an irrigation fluid across a distal
end of the endoscope; and wherein flow of the irrigation fluid is
changed from a first direction to a second direction by the flow
director.
[0007] The teachings herein provide an endoscope sheath having an
arm that aligns a tip of an endoscope sheath with endoscope tips of
various angles. The teachings provide an endoscope sheath that
directs fluid and/or suction across a distal end of the endoscope
so that debris and other imagine blocking substances are removed
from the distal tip of the endoscope. The teachings provide an
endoscope sheath angles fluid and/or suction across the imaging
sensor of the endoscope so that the imaging sensor is free of
debris, fluid spots, and interference. The teachings herein provide
an endoscope sheath that is configured to receive fluid, suction,
one or more functional devices, or a combination thereof so that
the fluid, suction, one or more functional devices, or a
combination thereof are extended across a distal end of the
endoscope.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1A illustrates a top view of an endoscope sheath;
[0009] FIG. 1B illustrates a proximal end view of an endoscope
sheath of FIG. 1A;
[0010] FIG. 1C illustrates a distal end view of an endoscope sheath
of FIG. 1A;
[0011] FIG. 2 illustrates a cross sectional view of FIG. 1C along
lines A-A;
[0012] FIG. 3A illustrates a side view of an endoscope inserted in
the endoscope sheath of FIG. 1A;
[0013] FIG. 3B illustrates a distal end view of FIG. 3A;
[0014] FIG. 3C illustrates a close-up view of the distal end of the
endoscope and sheath of FIG. 3A;
[0015] FIG. 3D illustrates a close-up side view of the distal end
of the endoscope and sheath of FIG. 3A;
[0016] FIG. 3E illustrates a cross sectional view of FIG. 3B cut
along line 3E-3E;
[0017] FIG. 3F illustrates a perspective view of a distal end of
FIG. 3E;
[0018] FIG. 3G illustrates a perspective view of a distal end of a
tube of a sheath;
[0019] FIG. 3H illustrates a bottom perspective view of a flow
director;
[0020] FIG. 4 illustrates a side view of a tube of a sheath that
includes a second opening;
[0021] FIG. 5A illustrates a side view of a tube of a sheath that
includes a second opening extending parallel to the axis of the
tube;
[0022] FIG. 5B illustrates a distal end view of the tube of FIG.
5A;
[0023] FIG. 6A illustrates a side view of a tube of a sheath that
includes a second opening extending at an angle relative to the
axis of the tube;
[0024] FIG. 6B illustrates a distal end view of the tube of FIG.
6A;
[0025] FIG. 7A illustrates an end plug of a sheath;
[0026] FIG. 7B illustrates a cross-sectional view of the end plug
of FIG. 7A;
[0027] FIG. 8A1 illustrates a cross-sectional view of a multi-lumen
sheath;
[0028] FIG. 8A2 illustrates a close-up view of the distal end of
the multi-lumen sheath of FIG. 8A1;
[0029] FIG. 8B illustrates a cross-sectional view of the
multi-lumen sheath of FIG. 8A cut along lines 8B-8B;
[0030] FIG. 8C illustrates a distal end view of the multi-lumen
sheath of FIG. 8A viewed along line 8C-8C;
[0031] FIG. 8D illustrates a perspective view of the distal end of
the multi-lumen sheath of FIG. 8A1;
[0032] FIG. 9 illustrates an example of the endoscope cleaner
system of the teachings herein; and
[0033] FIG. 10 illustrates another example of a system including
the endoscope sheath of the teachings herein.
DETAILED DESCRIPTION
[0034] The explanations and illustrations presented herein are
intended to acquaint others skilled in the art with the teachings,
its principles, and its practical application. Those skilled in the
art may adapt and apply the teachings in its numerous forms, as may
be best suited to the requirements of a particular use.
Accordingly, the specific embodiments of the present teachings as
set forth are not intended as being exhaustive or limiting of the
teachings. The scope of the teachings should, therefore, be
determined not with reference to the above description, but should
instead be determined with reference to the appended claims, along
with the full scope of equivalents to which such claims are
entitled. The disclosures of all articles and references, including
patent applications and publications, are incorporated by reference
for all purposes. Other combinations are also possible as will be
gleaned from the following claims, which are also hereby
incorporated by reference into this written description.
[0035] The present application claims priority to U.S. Provisional
Patent Application Ser. No. 61/882,652, filed on Sep. 26, 2013, the
contents of which are incorporated by reference herein in their
entirety for all reasons. The present teachings provide an
endoscope sheath for use in a system. The system of the teachings
herein includes an irrigation source and a suction source that are
both connected to an endoscope sheath that is in communication with
an endoscope. The system may include one or more control modules.
The system may function to clean an endoscope. Preferably, the
system functions to clean a distal tip of an endoscope. More
preferably, the system functions to clean an imaging device of an
endoscope. The system may include one or more functional components
that may extend proximate to a distal end of an endoscope or beyond
a distal end of an endoscope. The system may provide one or more
conduits relative to the endoscope. The system may protect the
endoscope. The system may include one or more sources of irrigation
fluid for use with the system, and the one or more sources of
irrigation fluid, suction, or both may be controlled by one or more
control modules.
[0036] The one or more control modules may function to control the
amount of fluid, suction or both applied to a predetermined area,
an area of interest, the endoscope, or a combination thereof. The
one or more control modules may be powered by electricity, battery
powered, or both. The one or more control modules may include one
or more pumps, one or more valves, one or more user interfaces, or
a combination thereof. The one or more user interfaces may be one
or more control knobs, one or more selectors, one or more
indicators, one or more user controls, one or more devices for
changing a parameter, or a combination thereof. The one or more
control modules may include any of the pumps discussed herein and
based upon feedback from the user interface may control the pump to
perform the selected parameter. The control module may include a
microprocessor, a computer, a control algorithm, or a combination
thereof. The control module may control one more valves located
within the system, connected to the control module, or both. The
one or more control modules may perform a suction function, an
irrigation function, or a combination of both upon a selection by
the user as is indicated by the user interface. The control module
may control the running speed, pumping duration, or both of the
pump so that irrigation fluid is moved to the sheath. The
irrigation fluid may function to clean an endoscope, clear debris
from a location proximate to the endoscope, be bioabsorbable, or a
combination thereof. The irrigation fluid may function to move
solid particles, move opaque fluids, or both. The irrigation fluid
may be applied with a pressure. The pressure of the irrigation
fluid may be varied by changing the height of the irrigation source
relative to the sheath so that the head of the irrigation fluid is
increased or decreased. The pressure of the irrigation fluid may be
sufficiently high so that the irrigation fluid may be redirected by
a flow director. The irrigation fluid may be applied with a
pressure of about 0.10 MPa or more, about 0.20 MPa or more, about
0.30 MPa or more, or even about 0.50 MPa or more. The irrigation
fluid may be applied with a pressure of about 3 MPa or less, about
2 MPa or less, about 1 MPa or less, or even about 0.75 MPa or less.
The irrigation fluid may be applied with a sufficient amount of
pressure that the surface tension of the irrigation fluid wicks the
irrigation fluid across the distal end, the imaging portion, or
both of the endoscope (e.g., the pressure may be low enough that
the irrigation fluid remains in contact with the endoscope, the
sheath, or both). The irrigation fluid may be applied with a
gravity feed, thus, the pressure of the irrigation fluid may be
determined by the height of an irrigation source. For example, the
irrigation source may be an IV bag and the height of the IV bag may
determine the amount of pressure and/or force generated at the
distal tip of the sheath, endoscope, or both. The irrigation fluid
may be applied by a pump that pumps the fluid at a predetermined
pressure. The irrigation fluid may be continuously applied,
intermittently applied, or both during an application cycle. The
pressure of the irrigation fluid may change when the irrigation
fluid reaches the end of an endoscope sheath so that the fluid
cleans the endoscope, creates turbulence at the end of the
endoscope, or both. Preferably, the pressure is sufficiently low so
that the flow across the endoscope is laminar. The pressure of the
irrigation fluid may be varied based upon the size, length, or both
of an irrigation line extending between an irrigation source and
the sheath. The irrigation source may be a reservoir that fluid is
drawn from by a fluid movement mechanism (e.g., a pump) and moved
through the sheath to provide irrigation to a distal end of an
endoscope, to clean an endoscope, or both.
[0037] The pump may function to circulate irrigation fluid, move
irrigation fluid through one or more lines, move fluid through a
sheath, or a combination thereof. The pump may function to create a
negative pressure (e.g., suction or vacuum). The pump may move
fluid with an impeller. The pump may be a lobe pump, a centrifugal
pump, a positive displacement pump, a rotary positive displacement
pump, a diaphragm pump, peristaltic pump, rope pump, a gear pump, a
screw pump, a progressing cavity pump, a roots-type pump, a plunger
pump, or a combination thereof. Preferably, the pump moves a
constant amount of fluid upon being activated, a constant amount of
fluid may be varied from application to application, or both. More
preferably, the pump is a peristaltic pump.
[0038] The one or more irrigation lines may function to connect the
sheath to an irrigation source. The irrigation lines may function
to create a head so that pressure is created and the irrigation
fluid is applied with a force. The irrigation line may be flexible,
movable, or both. The irrigation line may be made of any material
that is compatible with the irrigation fluid, a patient, use in a
surgical procedure, or a combination thereof. The irrigation line
may connect the sheath to an irrigation source, a suction source,
or both (i.e., suction may be applied through the irrigation
line).
[0039] The suction source may function to remove fluid, debris,
opaque fluids, unwanted material, or a combination thereof from a
point of interest, from a distal end of the sheath, a distal end of
the endoscope, or a combination thereof. The suction source may
function to perform a drying function, remove fluid spots, or both.
The suction source may be a pump, reversal of a motor, a common
suction source, a hospital suction source, or a combination
thereof. The suction source may apply a sufficient amount of vacuum
to remove a predetermined amount of fluid in a predetermined amount
of time. For example, the suction source may apply suction so that
10 ml of fluid may be removed in 1 to 2 seconds. The suction source
may apply a continuous suction, intermittent suction, or both.
[0040] The suction line may function to connect to the sheath so
that suction may be pulled through the sheath. The suction line may
function to connect the sheath to a suction source. The suction
line may assist is moving fluids, removing fluids, removing debris,
removing opaque fluids, removing particles, or a combination
thereof. The suction line may be any line that may assist in
creating a vacuum at a distal tip of the endoscope, the sheath, or
both. The suction line and the irrigation line may be the same
line. The suction line and the irrigation line may be connected to
a common line. The suction line and the irrigation line may be
connected by one or more fittings, one or more valves or both.
[0041] The one or more valves may function to allow only one
functions (e.g., irrigation or suction) to work at a time. The one
or more valves may function to block the irrigation line, the
suction line, or both. The one or more valves may only allow
suction or irrigation to be applied at a given time. The one or
more valves may be or include a check valve, a back flow preventer,
or both. The one or more valves may be located proximate to the
sheath, proximate to the irrigation source, proximate to the
suction source, or a location therebetween. Each of the lines may
include a valve. If more than one valve is present the valves may
be electrically connected, hydraulically connected, fluidly
connected, or a combination thereof so that if one valve is opened
another valve is closed. The two or more valves (e.g., a first
valve and a second valve) may be electrically connected,
electrically controlled, or both. The two or more valves may be
operated in a sequence (e.g., one opened and then one closed),
operated simultaneously, operated on a delay, or a combination
thereof. For example, only one valve may be open at a time. In
another example, one may close and after a time delay another may
open. The one or more valves may be part of a common fitting,
located proximate to a common fitting, or both.
[0042] The one or more common fittings may function to connect two
or more lines into a common line. The one or more common fittings
may function to connect a suction line and an irrigation line to a
common port. The one or more common fittings may connect a single
line to multiple devices so that multiple devices may be used
simultaneously, in series, in parallel, or a combination thereof.
For example, the common fitting may connect a suction line and an
irrigation line to a common line that is connected to a sheath and,
during operation, an irrigation fluid may be applied and then after
a delay and/or immediately when the irrigation fluid ceases to be
applied, suction may be applied to the suction line so that
irrigation fluid, excess irrigation fluid, debris, particles,
opaque fluids, or a combination thereof are removed from the distal
end of the endoscope. The one or more common fittings may have two
or more openings, three or more openings, four or more openings, or
even five or more openings. Each opening may receive at least one
line and fluidly connect the one or more lines together. More than
one common fitting may be used to connect multiple lines together.
For example, a first common fitting with three openings may be
connected to second common fitting with three openings so that two
tubes are connected to one opening of the first common fitting and
one tube is connected to each of the other two openings.
Preferably, the common fitting is generally "Y" shaped and two of
the openings lead into a third opening that is connected to a
common line and/or a delivery line.
[0043] The common line may function to deliver irrigation fluid,
suction, or both to a sheath. The common line may function to
provide a combination of multiple different fluids, devices,
suction levels, fluid pressures, or a combination thereof. The
common line may provide a single access point between the
irrigation source, the suction source, or both and the sheath. The
common line may have an increased cross-sectional area (e.g.,
diameter) relative to the cross-sectional area of the irrigation
line, the suction line, or both. The common line may be the same
size as one or both of the irrigation line, the suction line, or
both. The common line may extend between the common fitting and a
port of the sheath. The common line may be a delivery line.
[0044] The delivery line may function to deliver fluids to a
sheath. The delivery line may function to deliver suction to the
sheath. The delivery line and the common line are preferably the
same line. The delivery line, common line, or both may be used
during an application cycle.
[0045] The application cycle may be any cycle where an endoscope is
cleaned. The application cycle may be a cycle where a combination
of different items are applied, a combination of different
sequences are performed, or both. The application cycle may be a
cycle where an irrigation fluid and suction are applied in a
sequence to clean an endoscope. The application cycle may be a
combination of one or more applications of fluid, one or more
applications of suction, or both. The application cycle may be an
application of fluid and immediately thereafter an application of
suction to remove excess fluid form a point of interest, the distal
end of the endoscope, the distal end of the sheath, or a
combination thereof. The application cycle may have no delay
between an end of the application of an irrigation fluid and the
beginning of the application of suction. For example, upon
completion of the irrigation fluid being applied the suction may
immediately begin. The application cycle may be varied by a user.
The application cycle may include only an application of fluid
(i.e., a flushing cycle, a washing manner) with no suction. The
application cycle may be user activated for a predetermined amount
of time. The application cycle may be activated based upon a
duration a user activates a switch. For example, a user may pre-set
the activation cycle so that one touch of the switch causes the
irrigation fluid to run for 5 seconds. The user may pre-set the
activation cycle so that no suction is used. The application cycle
may concurrent application of fluid and suction. For example,
suction may begin being applied before the irrigation fluid is
turned off. The application cycle of the irrigation fluid, the
suction, or both may be changed by a user changing a selector,
actuating a control longer, changing an input, or a combination
thereof. The application cycle may be sufficiently long so that an
image sensor of an endoscope is clear and good images may be
taken.
[0046] The endoscope may function to provide an image to a surgeon,
a doctor, a nurse, any other person who desires visual access to a
remote location, or a combination thereof. The endoscope may be
used for non-invasive surgery. The endoscope may be used for
orthoscopic surgery. The endoscope may be inserted in a cut in
tissue. The endoscope may be used for insertion into an orifice
including an ear, nose, throat, rectum, urethra, or a combination
thereof. The endoscope may have a generally circular cross-section.
The endoscope may have a tubular section that is generally
cylindrical. The endoscope may have a tubular section extending to
the distal end and a handpiece connected to the tube and extending
to the proximal end. The endoscope may include one or more image
sensors in a distal end region.
[0047] The endoscope may include two or more image sensors. The
endoscope may include an image sensor at the most distal point of
the endoscope. The endoscope may include an image sensor that is
located on an angle. The angle of the image sensor, viewing face,
or both may be about 0.degree., 20.degree., 30.degree., 45.degree.,
60.degree., 70.degree., or a combination thereof. The image sensor
may provide black and white images, color images, thermal images,
or a combination thereof. Preferably, the image sensor, imaging
device, or both are located substantially at the distal end. The
angle of the image sensor, the viewing face, or both may dictate
the angle, shape, viewing cone, or a combination thereof of the
endoscope.
[0048] The viewing cone may be an area that of visibility of the
endoscope. The viewing cone may be variable, adjustable, or both.
The angle of the viewing cone may be movable. The angle of the
viewing cone may be predetermined based upon the type of endoscope
selected. The angle of the viewing cone may not be affected by the
flow director, lumen, sheath, or a combination thereof. The viewing
cone may extend outward from the distal end of the endoscope in a
cone shape.
[0049] The distal end of the endoscope may function to be inserted
into a patient so that a feature of interest may be viewed through
minimally invasive means. The distal end of the endoscope may be
the leading portion of the endoscope (i.e., the first portion hat
enters a patient). The distal end may function to provide washing
functions, suction functions, irrigating functions, or a
combination thereof that direct the irrigation fluid and suction
across the viewing face of the endoscope, the lens, or both. The
distal end of the endoscope may be on an opposing end of the
endoscope as a proximal end. The proximal end may function to be
gripped by a user. The proximal end may function to provide
controls to a user. The proximal end may provide an interface for
connecting other functional components such as an imaging device
(e.g., a camera). The proximal end may function to provide power,
sensing, suction, fluid, control, a connection point to outside
devices, or a combination thereof to the distal end of the
endoscope. The proximal end may be retained out of the patient and
the distal end may be inserted in the patent. A shoulder may be
located between the distal end and the proximal end.
[0050] The shoulder may function to prevent the proximal end from
entering a patient. The shoulder may function to form a connection
point with a tube of the endoscope. The shoulder may be a terminal
portion of a proximal end of the endoscope. The shoulder may
prevent a sheath from axially moving towards the proximal end of
the endoscope. The shoulder may be a distal end of the proximal end
portion of the endoscope. The shoulder may be generally vertical,
generally flat, generally orthogonal to the longitudinal axis of
the tubular section of the sheath, or a combination thereof. One or
more light posts may be located in a distal end region of the
proximal portion of the endoscope and the light post may be located
on a proximal portion of the endoscope relative to the shoulder
(e.g., between the shoulder a visual port but closer to the
shoulder end then a visual port end).
[0051] The light post may function to provide light into the
endoscope. The light post may direct light into the endoscope and
out of the tube of the endoscope so that a feature of interest is
illuminated. The light post may provide light so that a user can
see features of interests that are located in low light conditions.
The light post may be rigid. The light post may be immobile and/or
fixedly connected to the endoscope so that the light post has a
fixed position on the endoscope. The light post may be made of
metal, plastic, a biocompatible material, or a combination thereof.
The light post may be integral with a main portion of the proximal
end. The light post may be made of metal and some other
biocompatible material. The one or more light posts may provide
light through the endoscope, so that the visual port may be used
for observing a feature of interest at a distal end of the
endoscope.
[0052] The visual port may function to provide a viewing window for
a user. The visual port may function to allow a user to observe a
feature of interest. The visual port may function to provide an
output so that an image is displayed on a monitor. The visual port
may provide visual access through the endoscope to a user. The
visual port may provide a connection point to a camera that
displays the image on a larger image device such as a television or
a monitor. The visual port may be an optical window at the proximal
end that provides visual access to a viewing lens at the distal
end.
[0053] The viewing lens may function to provide a window that an
image sensor views through. The viewing lens may function to
protect an image sensor (e.g., a camera). The viewing lens may be a
cover over an image sensor. The viewing lens may be a viewing face
of the endoscope and vice versa. The viewing face may be a surface
of the endoscope that an image is generated through. The viewing
lens may have a cross-sectional length (e.g., diameter) that is
less than the cross-sectional length of the endoscope. The viewing
lens may have a largest dimension that is larger than the
cross-sectional thickness of the endoscope. For example, when the
endoscope has an imaging device at a 70.degree. angle the viewing
lens may be greater than the cross-sectional length of the
endoscope. The viewing lens may protect the imaging device (e.g.,
camera) from fluid, damage, corrosion, or a combination thereof.
The viewing lens may cover one or more imaging devices or even two
or more imaging devices. The viewing lens when in use may become
covered with debris, fluid, blood, opaque fluids, or a combination
thereof. The viewing lens may be inhibited from allowing a clear
image to be formed. The viewing lens may be partially or fully
covered by a sheath, be partially or fully surrounded by a sheath,
or both. Preferably, the sheath is located proximate to the viewing
lens without interfering with the range of vision created by the
viewing lens.
[0054] The sheath may function to provide one or more conduits,
lumen, or both for a fluid, suction, a functional device, or a
combination thereof to extend out of a distal end region of the
sheath. The sheath may function to form one or more lumen for
fluid, suction, a functional device, or a combination thereof to
extend out of a distal end region of the sheath. The sheath may be
open at both ends. The sheath may be open at the distal end and the
proximal end so that an endoscope may be inserted into the proximal
end and extend through the sheath and view a feature of interested
located near the distal end. The distal end of the sheath may have
a stop that located the distal end of the endoscope relative to the
distal end of the sheath. The sheath may function to provide
cleaning, washing, or both of an endoscope. The sheath may provide
a conduit, a lumen, or both that extends from a proximal end to a
distal end. The sheath may include one or more lumen, create one or
more lumen, or both. The sheath may include one or more parts that
when connected together create a conduit that provides irrigation
fluid, suction, or both to a distal end of the endoscope. The
sheath may substantially mirror the shape of the endoscope. Thus,
for example, if the endoscope has a circular cross-section then
then sheath has a circular cross section. The sheath may function
as an endoscope cleaner. The sheath may have a distal end and a
proximal end with a longitudinal axis that extends
therebetween.
[0055] The distal end of the sheath may function to direct
irrigation fluid, suction, or both across the viewing lens, the
distal end, or both of the endoscope. The distal end may function
to open, be open, or both so that irrigation fluid may exit the
sheath. The distal end may function to not interfere with the
imaging capabilities of the endoscope. The distal end may open out
so that pressure of the irrigation fluid drops as the irrigation
fluid reaches the distal end. The distal end may be free of any
integrally formed pieces that direct irrigation fluid, suction, or
both across a distal end of the endoscope. The distal end may be
free of any extensions that extend from the distal end. The distal
end may be free of any pieces that extend from a portion of a
distal most end of the sheath. The distal end may be substantially
equal around a circumference of the sheath. The distal end region
may include one or more annular gaps (e.g., a ring shaped gap). One
or more slots may be located in a distal end region proximate to
the distal end of the sheath.
[0056] The one or more slots may function to receive one or more
flow directing devices. The one or more slots may function to
connect one or more flow directing devices to a distal end of the
sheath. The one or more slots may be a through hole. The one or
more slots may function to retain one or more flow directing
devices at a distal end of the sheath, the distal end of the
endoscope, or both. The one or more slots may be located in a
distal end region of the sheath, a tube of the sheath, or both. The
one or more slots may have any shape that receives and maintains a
flow directing device in a distal end region. The one or more slots
may have a shape that is square, round, rectangular, diamond,
rhombus, regular, irregular, symmetrical, asymmetrical, includes
one or more inwardly projecting portions, one or more fingers, or a
combination thereof. The one or more slots may have any shape that
retains a flow directing device within an end region of the sheath.
If more than one slot is present the slots may be located adjacent,
in the same plane, in a line, be axially spaced apart, radially
spaced apart, or a combination thereof. The one or more slots may
each receive a flow directing device and the flow directing device
may be any flow directing device discussed herein and preferably
one or more flexible flaps.
[0057] The one or more flexible flaps may function to direct fluid
across a distal end of an endoscope. The one or more flexible flaps
may be a flow director. The one or more flexible flaps may function
to clean, wash, or both a distal end of an endoscope. The one or
more flexible flaps may function to direct an irrigation fluid from
one edge of a sheath to a second edge of a sheath. The one or more
flexible flaps may be opened by pressure of the irrigation fluid.
The one or more flexible flaps may be opened by a pressure of about
0.05 MPa or more, about 0.1 MPa or more, about 0.2 MPa or more, or
even about 0.3 MPa or more. The one or more flexible flaps may be
elastically deformable. The one or more flexible flaps may be
self-closing. The one or more flexible flaps may open during an
application of irrigation fluid and close when the application of
irrigation fluid is complete. The one or more flexible flaps may be
made of a single material and a central portion of the flexible
flap may move and permit fluid flow across the distal end. The one
or more flexible flaps may be made of two or more materials and one
material may be flexible or have a lower flexing point so that the
material with the lower flexing point deforms during an application
of irrigation fluid. The flexible flap may allow a variable amount
of irrigation fluid to exit. The flexible flap may vary the
direction of the irrigation fluid. For example, initially upon
irrigation fluid being applied the flexible flap may direct fluid
directly across the image sensor and as the flexible flap opens the
fluid may extend further from the image sensor. The one or more
flexible flaps may include an elastomer, an elastomeric material,
rubber, metal, plastic, a thermoplastic, a thermoset, or a
combination thereof. The one or more flexible flaps may cover one
or more openings in the sheath, one or more lumen, one or more
portions of the endoscope, or a combination thereof. The one or
more flexible flaps may receive the endoscope regardless of the
angle of the endoscope (e.g., 0.degree., 30.degree., 45.degree.,
60.degree., 70.degree. etc. . . . ). Each of the one or more
flexible flaps may be configured to receive a specific endoscope
with a specific angle. The one or more flexible flaps may extend
across about 3 percent or more, 5 percent or more, or 10 percent or
more of the sheath opening. The one or more flexible flaps may
extend across about 50 percent or less, about 40 percent or less,
or about 30 percent or less of the sheath opening (i.e., the
opening that the endoscope gathers images through). The one or more
flexible flaps may extend across an opening of the sheath without
interfering with imaging by the endoscope. The one or more flexible
flaps may extend across the opening of the sheath without
contacting the endoscope. The one or more flexible flaps may
contact a portion of the endoscope. The one or more flexible flaps
may contact the endoscope without impairing imaging capabilities of
the endoscope. The one or more flexible flaps may include one or
more flap connectors.
[0058] The one or more flap connectors may function to connect the
flexible flaps to a sheath. The one or more flap connectors may
function to extend into a slot in a sheath. The one or more flap
connectors may extend all of the way through a slot in a sheath.
The one or more flap connectors may form a friction fit, an
interlocking fit, a mechanical connection, a snap fit, or a
combination thereof with a sheath and preferably a slot in the
sheath. The flap connector may extend from a flap body.
[0059] The flap body may function to assist in connecting the
flexible flap to the sheath. The flap body may extend between one
or more flap directors and one or more flap connectors. The flap
body may function to direct fluid toward the distal end of the
endoscope, across a distal end of the endoscope. The one or more
flap connectors may extend from a main portion, a central portion,
or both of the flap body. The one or more flap connectors may
extends from a side of the flap body, a distal end, a proximal end,
or a combination thereof. The location of the flap connector
relative to the flap body may vary based upon the angle of the
endoscope that the flexible flap is to be used with. The flap body
may extend along an inside of a sheath. The flap body may be
flexible. The flap body may be rigid. The flap body may be more
rigid than the flap director. The flap body may be thicker than the
flap director so that the flap director is flexible and the flap
body is inflexible. The flap body may assist in forming a lumen in
the sheath, may direct fluid along an inside of a sheath, or both.
The flap director may form a cantilever connection with one or more
flap directors.
[0060] The flap directors may function to direct fluid across a
distal end of the endoscope. The flap directors may function to
move when irrigation fluid is being applied. The flap directors may
change the direction of irrigation fluid, suction, or both
throughout an application of irrigation fluid, suction or both. For
example, when irrigation fluid is first applied the flexible flap
may direct irrigation fluid directly across the endoscope and as
the duration of application continues the angle the irrigation
fluid is directed may increase and during the application of
suction the reverse may occur. The flap directors may extend at an
angle relative to the flap body. The flap directors may extend at
an angle of about 75 degrees or more, about 90 degrees or more,
about 105 degrees more, about 115 degrees more, about 125 degrees
or more, or even about 135 degrees more relative to the flap body.
The flap directors may extend an angle of about 180 degrees or
less, about 165 degrees or less, about 150 degrees or less, or even
about 140 degrees or less. When more than one flap director is
present the flap directors may actuate individually. The flexible
flap may include two or more flap directors, three or more flap
directors, or even four or more flap directors. The one or more
flap directors may be movable relative to each other. The one or
more flap directors may be separated by one or more flap slots.
[0061] The one or more flap slots may separate one or more flap
directors. The one or more flap slots may function to allow for
individual movement of two or more flap directors. The one or more
flap slots may extend substantially the same length as the flap
directors. The one or more flap slots may extend to a distal end of
the sheath. The one or more flap slots may be a cut in the flap
directors so that two or more discrete flap directors are formed.
The one or more flap slots may be square, rectangular, triangular,
diamond shaped, symmetrical, asymmetrical, or a combination
thereof. The size and shape of the one or more flap slots may
determine the amount of force and/or pressure required to move the
flap director. For example, a longer flap (e.g., 5 mm) slot may
lower the strength of the flap directors relative to a shorter flap
slot (e.g., 2 mm). The flap slot may be about 1 mm or more, about 2
mm or more, about 3 mm or more, about 4 mm or more, or even about 5
mm or more in length, width, or both. The flap lot may be about 20
mm or less, about 15 mm or less, or about 10 mm or less in length,
width, or both. The one or more flap slots may allow the imaging
device, the viewing cone, or both to view through the flexible
flap. The one or more flap slots may be aligned with the opening in
the sheath.
[0062] The opening in the sheath that the endoscope gathers images
through may be a first opening in the sheath. The first opening in
the sheath may be a primary opening. The first opening in the
sheath may align with an end of the endoscope. The first opening
may function to locate the distal end of the endoscope laterally,
longitudinally, radially, or both with respect to the distal end of
the sheath. The first opening may function to allow the endoscope
to gather images without interference. The first opening may
function to mirror the angle of the viewing lens, the imaging
device, imaging sensor, viewing face, or a combination thereof. The
first opening may extend at an angle relative to the longitudinal
axis of the sheath. The first opening may extend perpendicular to
the longitudinal axis of the sheath. The first opening may be
located adjacent to a second opening.
[0063] The second opening may function to irrigate fluid located
proximate to the distal end of the endoscope. The second opening
may function to direct fluid away from the distal end of the
endoscope. The second opening may be directed towards the first
opening, away from the first opening, parallel to the first
opening, at an angle relative to the first opening, or a
combination thereof. The second opening may extend at an angle
relative to the longitudinal axis. The second opening may extend at
an angle of about 0.degree. or more, 15.degree. or more, 30.degree.
or more, 45.degree. or more, 60.degree. or more, 70.degree. or more
with the longitudinal axis, the first opening, or both. The second
opening may direct fluid at an angle of about 0.degree. or more,
15.degree. or more, 30.degree. or more, 45.degree. or more,
60.degree. or more, 70.degree. or more with the longitudinal axis,
the first opening, or both. The second opening may be a through
hole. The second opening may be a second lumen that is created by
an inner wall in the sheath. The first opening and the second
opening may be a weep port and a lavage port. The second opening
may be created by a flexible flap. The second opening be partially
covered or fully covered by the flexible flap. The second opening
may be absent when a flexible flap is used. The second opening may
be located outside of the flexible flap, on an opposite side of the
sheath as the flexible flap, or both. The second opening may be
located in a thicker portion of the sheath wall. For example, the
cross-sectional thickness of the sheath wall may not be uniform and
the second opening may extend through a thicker portion of the
sheath. The sheath may include one or more features around a
circumference of the sheath that are configured to receive a
through hole, form a through hole, form the second opening, or a
combination thereof. The sheath may include a portion that folds
back upon itself creating a pocket and the second opening may
extend through a portion of the fold. The second opening may be
integrally formed in the sheath. The second opening may be formed
in the sheath after the sheath is formed. The second opening may be
adjustable, static, fixed, or a combination thereof. The second
opening may include an insert that is adjustable. The second
opening may include an insert that has elastomeric capabilities and
adjusts flow out of the second opening, provides a variable
direction of flow out of the second opening, or both. The second
opening may extend from a lip, opposite a lip, through a lip, or a
combination thereof.
[0064] The sheath may include one or more lips. The one or more
lips may be a flow director. The one or more lips may function to
assist in directing irrigation fluid across the lens, imaging
device, or both of the endoscope. The one or more lips may function
to substantially mirror the shape of the endoscope. The one or more
lips may overhang the endoscope. The one or more lips may provide a
protective cover for the endoscope. The one or more lips may only
be used when a flexible flap is used. The one or more lips may be
located on a distal end opposite a proximal end of the sheath.
[0065] The proximal end of the sheath may function to create a
connection with the endoscope. The proximal end may align the
sheath relative to the endoscope. The proximal end of the sheath
may axially align the sheath relative to the endoscope, radially
align the sheath relative to the endoscope, axially align the
distal ends of the sheath and the endoscope, the sheath axially
relative to a light post of the endoscope, the sheath rotationally
relative to a light post of the endoscope, or a combination
thereof. The proximal end may receive all or a portion of the
endoscope. The proximal end may contact a shoulder of the
endoscope. A longitudinal axis may extend between the proximal end
and the distal end of the sheath. The longitudinal axis may extend
through a through hole, channel, lumen, or a combination thereof
that extends the length of the sheath. The endoscope may extend
within the sheath along the longitudinal axis. The longitudinal
axis may extend from a connection point between the endoscope and
the sheath and through a tube of the sheath.
[0066] The tube may function to receive the imaging device of the
endoscope. The tube may be located at the distal end of the
endoscope. The tube may be generally the same size and shape as the
endoscope. For example, if the endoscope has a generally circular
cross-section then the tube may have a generally circular
cross-section. The tube may have a shape that is different than the
endoscope. The tube may be any shape so that the tube is configured
to receive the endoscope. The tube may be connected to: a hub,
integrally formed with a hub, in fluid communication with a port,
connected to a port, include a through hole that is in
communication with a port, or a combination thereof. The tube may
be connected to a handpiece at the proximal end. The tube may be
integrally formed with a handpiece. The tube may have a uniform
wall thickness, a variable wall thickness, or both. The wall
thickness may vary along the length of the tube. The wall thickness
may vary along the circumference of the tube. For example, the tube
may have a wall that is twice as thick on a bottom half of the tube
than a top half of a tube when viewing the tube in a cross-section.
The tube may include the lip, slot, flexible flap, first opening,
second opening, end plug, first lumen, second lumen, weep port,
lavage port, flow director, or a combination thereof discussed
herein. The tube may include one or more positioning devices along
its length. The one or more positioning devices may be one or more
dimples.
[0067] The one or more dimples may function to position an
endoscope within a sheath, a tube of the sheath, or both. The one
or more dimples may function to position the endoscope within the
sheath. The one or more dimples may create a space, a conduit, a
lumen, or a combination thereof between a wall of the sheath and
the endoscope. The one or more dimples may be a portion of the wall
of the sheath that extends inward. The one or more dimples may be
generally round, square, oval, triangular, rounded, have a flat
surface, have a rounded surface, be hemispherical, or a combination
thereof. The one or more dimples may be located on opposing sides
of the tube. The one or more dimples may be located along the
length. For example, the tube may include dimples that are spaced
apart from the proximal end to the distal end so that the endoscope
and sheath are fully supported relative to each other along their
length. If more than one dimple is present the dimples may be
located adjacent, in the same plane, in a line, be axially spaced
apart, radially spaced apart, or a combination thereof. The one or
more dimples may be located on the same side of the sheath as the
port, opposite side of the sheath as the port, or both.
[0068] The port may function to provide access into the tube of the
sheath. The port may function to provide a fluid connection, a
connection with one or more irrigation sources, a connection with
one or more suction sources, one or more common lines, one or more
delivery lines, or a combination thereof. The port may form a fixed
connection with one or more lines so that suction, irrigation
fluid, or both may be provided through the port. The port may
provide direct access to the inside of the tube. The port may be
configured so that one or more functional elements (e.g., a cutting
tool, a cauterizing tool, or both) may gain access to the inside of
the tube of the sheath, may extend out of the distal end of the
sheath, or both. For example, the port may receive items that do
not flow. The port may be part of a handpiece of the sheath. The
port may be part of the tube, the hub, or both.
[0069] The hub may function to connect the sheath to the endoscope.
The hub may function to seal the sheath to the endoscope. The hub
may surround a portion of the endoscope. The hub may function to
create a fluid seal with the endoscope so that irrigation fluid,
suction, or both do not leak. The hub may receive a shoulder of the
endoscope so that the shoulder and the hub form a fluidly sealed
connection. The hub may have a circular cross section. The hub may
taper as it extends towards the distal end of the sheath. The hub
may be large enough to receive all or a portion of the endoscope.
The hub may partially extend around the endoscope, fully extend
around the endoscope, or a combination of both. The hub may have a
thicker section that connects to the tube. The hub may be fastened
to the tube. The hub may be connected to the tube by a mechanical
fastener such as threads, a snap, a one way connection system, a
series of ribs, or a combination thereof. The hub may connect to
the tube by one or more adhesives. The hub may include a collar, an
arm, or both that receive all or a portion of the endoscope.
[0070] The collar may be an integral part of the hub. The collar
may function to axially align, rotationally align, or both the
endoscope and the sheath. The collar may form a majority of the hub
(e.g., 50 percent or more, 60 percent or more, or 70 percent or
more). The collar may function to prevent rotational movement. The
collar may function to prevent axial movement. The collar may
function to receive all or a portion of the endoscope. The collar
may function to receive a light post of the endoscope. The collar
may surround the light post. The collar may extend partially around
the light post. The collar may include one or more flares that
extend proximally from the collar.
[0071] The flare may function to create a sealed connection with
the endoscope. The flare may create a fluid seal with the endoscope
so that irrigation fluid, suction, or both cannot escape between
the endoscope and the flare. The flare may be flexible so that the
flare forms a seal. The flare may be elastically deformable so that
the flare forms a compression fitting with the endoscope. The flare
may be partially deformable, include a deformable region, include
rubber, include an elastomer, include elastic, or a combination
thereof. The flare may be axially compressed when the endoscope is
inserted in the sheath. The flare may form a circumferential seal
about a shoulder of the endoscope, an end of the proximal end
region, around the tube, or a combination thereof. The flare may
axially extend from the hub of sheath. The flare may radially
extend from the hub. The flare may be located partially within the
hub and partially out of the hub. The flare may have a facing
surface that contacts an endoscope.
[0072] The facing surface may function to create a seal with an
endoscope. The facing surface may contact a shoulder of the
endoscope. The facing surface may create a seal with the endoscope,
the shoulder of the endoscope, or both. The facing surface may
surround a portion of the endoscope. For example, the facing
surface may extend around the tube, the shoulder, or both to create
a seal. The facing surface may be made of a pliable material that
forms a seal. The facing surface may be made of an elastomer, may
include an elastomer, or both. The facing surface may elastically
deform. The facing surface may be longitudinally extendable. The
length of the facing surface may be longitudinally extendable. The
facing surface may extend from the hub. The facing surface may have
a portion that extends radially outward. The hub may include one or
more spacers.
[0073] The one or more spacers may function to axially align the
endoscope within the sheath. The one or more spacers may contact a
shoulder of the endoscope and align the endoscope within the
sheath. The spacer may contact an endoscope so that the endoscope
is axially aligned within the tube. The one or more spacers may be
optional. The spacer may be located proximate to one or more
O-rings.
[0074] The one or more O-rings may function to form a seal between
the sheath and a tube of the endoscope. The one or more O-rings may
function to prevent fluid from traveling towards the proximal end
of the endoscope. The one or more O-rings may function to create a
seal. The one or more O-rings may be located within the hub,
proximate to a collar of the hub, or both. The one or more O-rings
may be made of any material that forms a seal. The one or more
O-rings may create a circumferential seal, a thrust seal, or both.
The one or more O-rings may be axially compressed, radially
compressed, radially expanded, or a combination thereof. The one or
more O-rings may include one or more through holes. The one or more
O-rings may elastically deform. The one or more O-rings may be made
of an elastomer, include elastic, include rubber, include a
deformable material, include a deformation region, or a combination
thereof. The one or more O-rings may be located proximate to a
locking ring.
[0075] The one or more locking rings may lock the O-ring to the
sheath, the endoscope, or both. The one or more locking rings may
function to lock two or more components together. The one or more
locking rings may include a through hole so that the endoscope
extends through the tube and the locking ring.
[0076] A through hole may extend from a proximal end to a distal
end of the sheath. A through hole may be sufficiently large so that
the endoscope and fluid (e.g., irrigation fluid, suction, or both)
may pass from the distal end to the proximal end of the sheath. The
tube may include one or more through holes in the sheath. The
through hole in the tube may open directly to a point of interest,
an internal location of a patient, or both. The through hole may
include one or more flow directors.
[0077] The one or more flow directors may function to direct fluid
from the distal end of the sheath, suction at the distal end of the
sheath, or both. The one or more flow directors may function to
direct irrigation fluid across an imaging device, into contact with
an imaging device, at an angle relative to an imaging device, or a
combination thereof. The one or more flow directors may be part of
the tube. The one or more flow directors may be a discrete piece.
The one or more flow directors may be partially part of the tube
and partially a discrete piece. The one or more flow directors may
be an extension. The one or more flow directors may be formed by
bending, cutting, folding, or a combination thereof. The one or
more flow directors may be made of metal, plastic, a biocompatible
material, or a combination thereof. The one or more flow directors
may be formed by removing material. The one or more flow directors
may be formed by grinding, cutting, or both. The one or more flow
directors may be formed by performing more than one of the
aforementioned manufacturing steps. For example, the material may
be folded and then polished so that there are no sharp edges. The
one or more flow directors may be made by molding, injection
molding, or both. The one or more flow directors may be a lip, a
flexible flap, end plug, or a combination thereof.
[0078] The one or more end plugs may function to direct fluid from
a distal end of a sheath. The one or more end plugs may function to
direct irrigation fluid, suction, or both across an imaging device,
the face of the endoscope, a viewing lens of the endoscope, or a
combination thereof. The one or more end plugs may direct
irrigation fluid, suction, or both at an angle relative to the
endoscope, viewing lens, face, or a combination thereof. The one or
more end plugs may connect to an inner wall of the sheath, an outer
wall of the sheath, or both the inner wall and the outer wall of
the sheath. The one or more end plugs may be integrally formed with
the sheath. The one or more end plugs may be discrete from the
sheath and connected to the tube of the sheath. The one or more end
plugs may connect to a distal end region of the sheath. The one or
more end plugs may include one or more radially extending lips.
[0079] The one or more radially extending lips may function to
direct fluid entering and/or exiting the one or more end plugs, the
sheath, a tube of a sheath, or a combination thereof. The one or
more radially extending lips may function to angle fluid and/or
suction across the endoscope, the imaging device, a face, a viewing
lens, or a combination thereof. The one or more radially extending
lips may direct the fluid at an angle relative to the longitudinal
axis of the sheath. The one or more radially extending lips may
extend substantially around a circumference of the sheath. The one
or more radially extending lips may extend around about 30.degree.
or more, about 45.degree. or more, about 60.degree. or more, about
90.degree. or more, or even about 135.degree. or more. The one or
more radially extending lips may extend around about 360.degree. or
less, about 270.degree. or less, preferably about 180.degree. or
less, or even more preferably about 150.degree. or less. The one or
more radially extending lips may extend from a distal end of the
end plugs. The radially extending lip may form a top side of a
channel. The radially extending lip may extend in both the axial
direction and an angle relative to the axial direction (e.g.,
perpendicular). The one or more lips may direct fluid across the
distal end of the endoscope, the imaging device, a facing surface a
viewing lens, or a combination thereof. The angle the fluid may be
directed by the one or more lips is about 30.degree. or more, about
45.degree. or more, about 60.degree. or more, or about 75.degree.
or more (e.g., about 90.degree.). The angle the fluid may be
directed by the one or more lips is about 180.degree. or less,
about 150.degree. or less, about 135.degree. or less, or about
115.degree. or less. The one or more radially extending lips may
extend over one or more channels, create one or more channels, or
both.
[0080] The one or more channels may function to provide a fluid
path at a distal end region of the sheath. The one or more channels
may direct irrigation fluid, suction, or both relative to the
endoscope. The one or more channels may extend from a proximal end
to a distal end of the end plug. The one or more channels may have
any shape so that fluid flows through the channels. The one or more
channels may have a continuous cross sectional area,
cross-sectional shape, cross-sectional size, or a combination
thereof. The one or more channels may taper as the channel
approaches the distal end. The one or more channels may increase in
size and the channel approaches the distal end. The one or more
channels may be a single channel. The height, width, thickness, or
a combination thereof of the channel may vary as the channel
radially extends around the sheath, endoscope, or both. For
example, the channel may start with a first dimension at a first
end and a second dimension at a second end where the first
dimension is a factor of two or more, three or more, or even four
or more than the second dimension at the second end. The
cross-sectional area of the channel may vary along the length of
the channel. The size of the channel may exponentially increase in
size as the channel extends around the circumference. The channel
may provide different flow rates, flow pressures, flow forces, or a
combination thereof along the circumference of the endoscope. The
channel may be formed between two opposing surface. The channel may
be formed between a lip and a cross-bar.
[0081] The cross-bar may function to form all or a portion of a
channel. The cross-bar may function to provide radial support,
axial support, or both of the lip, the connection arms, the front
wall, or a combination thereof. The cross-bar may function to
create a connection with an endoscope, a sheath, or both. The
cross-bar may have a uniform thickness, length, width, or a
combination thereof. The cross-bar may vary in thickness, length,
width, or a combination thereof. The cross-bar may substantially
mirror the shape of the endoscope, sheath, or both. The cross-bar
may be made of one piece. The cross-bar and the lip may be
connected together, part of one unitary piece, or both. The
cross-bar and lip may be two discrete pieces. The cross-bar may be
covered by the lip in the axial direction. The cross-bar may be
partially covered or fully covered at one end. The cross-bar may be
open at a distal end of the end plug. The cross-bar may terminate
before the lip and a front wall may extend in front of the channel,
the cross-bar, or both at an angle relative to the axial
direction.
[0082] The front wall may be a part of the lip. The front wall may
function to change the direction of fluid flow. The front wall may
direct fluid across the front of the endoscope. The front wall may
function to direct irrigation fluid across a lens, an imaging
device, distal end, or a combination thereof of an endoscope. The
front wall may direct fluid from one side to a second opposing
side. The front wall may be tapered so that irrigation fluid flow
is equally distributed across the endoscope, more irrigation fluid
is applied in a central portion, or both. The front wall may vary
in angle so that irrigation fluid flow is varied across the
endoscope. The front wall may direct irrigation fluid at an angle
of about 135 degrees or less, about 105 degrees or less or about 95
degrees or less relative to the axial direction, the first
direction of flow, or both. The front wall may direct irrigation
fluid at an angle of about 45 degrees or more, about 60 degrees or
more, or about 75 degrees or more relative to the axial direction,
the direction of flow, or both. Preferably, the front wall may
direction irrigation fluid at substantially a 90 degree angle
relative to the axial direction, the first direction of flow, or
both. The front wall may direct irrigation fluid, suction, or both
from a first direction to a second direction so that the endoscope
is cleaned. The front wall may extend from, be connected to, or
include one or more connection arms.
[0083] The one or more connection arms may function to connect the
end plug to the sheath. The one or more connection arms may
function to connect the end plug to the endoscope. The one or more
connection arms may function to connect the end plug to a sheath so
that a force is prevented from moving the end plug axially,
radially or both on the sheath. The one or more connection arms may
function to create a force so that the end plug is prevented from
moving axially, radially, or both on the endoscope. The one or more
connection arms may extend partially and/or fully around the
sheath, the endoscope, or both. The one or more connection arms may
create a radial force on the sheath, the endoscope, or both. The
one or more connection arms may be integrally connected to the
sheath. The one or more connection arms may be connected to the
sheath by a fastener. The one or more fasteners may be a rivet, a
screw, a set screw, a threaded member, a detent, a one sided
locking member, or a combination thereof. For example, a one sided
locking member may be ramp shaped and when slid over the ramp the
one sided locking member may prevent the end piece from being moved
in an opposing direction. The one or more connection arms may be
connected to the sheath by an adhesive. The one or more connection
arms may be mechanically connected (e.g., ultrasonically welded,
friction welded, resistive welded, heat staking, or a combination
thereof) to the endoscope, sheath, or a combination of both. The
connection arms may be heat shrinkable. The connection arms may be
adjustable so that the length of the connection arms are shortened
to form a fixed connection with the sheath, the endoscope, or both.
The one or more connection arms may form a receiving region between
the one or more connection arms.
[0084] The receiving region may function to receive the sheath, the
endoscope, or both. The receiving region may function to form a
fixed connection with the sheath, the endoscope, or both. The
receiving region may be generally circular in shape. The receiving
region may be substantially the same shape as the endoscope, the
lumen or both. The receiving region may extend into a recess in the
sheath, the endoscope, or both. The receiving region may be a
through hole, an absence of material, or both. The receiving region
may be shrinkable, variable in size, or both. The receiving region
may be shaped so that the end plug may be extended over the sheath
and a fixed connection formed. The sheath may include one or more
lumen.
[0085] The sheath may be a multi-lumen sheath. The multi-lumen
sheath may function to provide a through hole for the endoscope and
one or more through holes for fluids (e.g., irrigation fluid,
suction, or both). The multi-lumen sheath may function to provide
access from a proximal end to a distal end of the sheath. The
multi-lumen sheath may function to provide access for one or more
fluids, one or more functional devices, or both. The multi-lumen
sheath may include at least two lumen that extend through the
sheath. Each of the lumen include a proximal end and a distal end.
Each of the proximal ends and distal ends of each of the lumen may
be align. Each of the proximal ends, the distal ends, or both may
be the same length, different lengths, or both. The proximal ends,
distal ends, or both may end at different locations so that one
lumen extends past one or more of the other lumen. The multi-lumen
sheath may include at least a first lumen and a second lumen.
[0086] The first lumen may function to receive all or a portion of
the endoscope. The first lumen may function to receive at least the
distal end of the endoscope. The first lumen may function to extend
substantially the length of the sheath, the tube of the sheath, or
both. The first lumen may be the largest lumen of the sheath. The
first lumen may be the primary lumen of the sheath. The first lumen
may have a cross-sectional area that is a factor of 2 or more, 3 or
more, 4 or more, or even 5 or more larger than the second lumen or
any other lumen. The first lumen may extend from substantially the
proximal end to substantially the distal end. The first lumen may
be substantially the same size as the endoscope. The first lumen
may be separated by the other lumen (e.g., the second lumen) by a
wall.
[0087] The second lumen may function to receive fluid, a functional
tool, or both. The second lumen may function to assist in cleaning
an endoscope. The second lumen may provide access from
substantially the proximal end to substantially the distal end of
the sheath. The second lumen may be located only at the distal end
region (i.e., last 20 percent or less), only at the proximal end
region (i.e., last 20 percent or less), extend the entire length of
the sheath, extend the entire length of the tube, or a combination
thereof. Preferably, the second lumen is only located within the
distal end region of the tube of the sheath. The second lumen may
have a different length then the first lumen. The second lumen may
terminate at a location where the second lumen can provide
irrigation fluid, suction, or both to the distal end of the
endoscope, clean the endoscope, or both. The second lumen and the
first lumen may be generally parallel. The second lumen may include
a portion that directs fluid towards the first lumen, the
endoscope, or both. The second lumen may have a portion that is
angled towards the first lumen, the endoscope, or both. The second
lumen may be formed by a space created between a wall of the tube
and the endoscope, one or more inner walls, or both.
[0088] The one or more inner walls may function to create two or
more lumen. The one or more inner walls may function to separate
two or more lumen. The one or more inner walls may be a continuous
wall, an intermittent wall, a solid wall, a perforated wall, or a
combination thereof. The one or more inner walls may be located
only at the distal end region (i.e., the last 20 percent or less),
only at the proximal end region (i.e., the last 20 percent or
less), extend the entire length of the sheath, extend the entire
length of the tube, or a combination thereof. The one or more inner
walls may form separate channels within the tube of the sheath. The
one or more inner walls may bias the endoscope into contact with an
opposing wall of the sheath. The one or more inner walls may form a
tight fit with the endoscope at a location along its length.
Preferably, the inner wall contacts the distal end of the endoscope
so that the distal end is located within the sheath. The one or
more inner walls may function to provide a channel for fluids to
pass but not interfere with the endoscope. The one or more inner
walls may include one or more weep ports.
[0089] The one or more weep ports may be a through hole in the
inner wall. The one or more weep ports may function to direct
irrigation fluid, suction, or both across a distal end of the
endoscope. The one or more weep ports may function to clean an
endoscope, dry an endoscope, remove opaque substances from a
viewing lens, a visual port, a viewing face, or a combination
thereof of an endoscope. The one or more weep ports may flow fluid
across an endoscope. The one or more weep ports may be a through
hole in an inner wall of the sheath tube. The one or more weep
ports may be any shape so that fluid, suction, or both are directed
along a distal end of the endoscope. The one or more weep ports may
be circular, oval, square, rectangular, extend around a
circumference of the tube, or a combination thereof. The one or
more weep ports may extend between the first lumen and the second
lumen. The one or more weep ports may allow irrigation fluid to
flow into the first lumen from the second lumen so that the end of
the endoscope is flooded with fluid and then when vacuum is applied
the excess fluid is removed. The one or more weep ports may be
located proximate to and/or work in conjunction with one or more
lavage ports.
[0090] The one or more lavage ports may function to provide
irrigation fluid to a location distal from the sheath the endoscope
or both. The one or more lavage ports may function to clean a
feature of interest while the endoscope is cleaned. The one or more
lavage ports may reduce the pressure of the irrigation fluid
extending out of the weep port. The one or more lavage ports may
extend from the second lumen, extend through an end plate covering
the second lumen, or both. The one or more lavage ports may
irrigate a site of interest (e.g., a surgical site). The one or
more lavage ports may remove debris, opaque substances, or both
from a site of interest. The one or more lavage ports may allow for
a functional tool (e.g., a gripping tool, a cauterizing tool, a
cutting tool, or a combination thereof) to extend through the
sheath and into the site of interest.
[0091] FIG. 1A illustrates a top view of sheath 90 for use with an
endoscope cleaner system (not shown). The sheath 90 includes a
distal end 92 and a proximal end 94. A tube 96 and hub 98 extending
between the distal end 92 and the proximal end 94. The hub 98
includes a port 106 for receiving suction, an irrigation fluid, or
both, and a collar 100 for creating a connection with an endoscope
(not shown).
[0092] FIG. 1B illustrates an end view of the sheath 90 from the
proximal end 94. The port 106 is shown extending from the hub 98
and a through hole 152 is shown extending through the tube 96 and
hub 98.
[0093] FIG. 1C illustrates a view of the sheath 90 from the distal
end 92. A through hole 152 is shown extending through the sheath
90.
[0094] FIG. 2 illustrates a cross sectional view of the sheath 90
of FIG. 1A cut along lines A-A of FIG. 1C. The sheath 90 includes a
tube 96 connected to a hub 98. The hub 98 includes an optional
spacer 128 between an end of the tube 96 and a mating surface of
the hub 98. An O-ring 130 is located in the hub proximate to a
locking ring 132 for creating connection between the hub 98 and an
endoscope (not shown).
[0095] FIG. 3A illustrates an endoscope 60 extending into a sheath
90. The endoscope 60 includes a proximal end 64 including a visual
port 74. The endoscope 60 includes a distal end 92 that extends to
a distal end 62 of a sheath 90, and a viewing cone 78 of the
endoscope is shown. The sheath 90 includes a tube 96 extending from
a distal end 92 to a hub 98. The hub 98 includes a port 106 for
receiving suction, an irrigation fluid, or both. The hub 98
terminates at a proximal end 94 that receives a shoulder 70 and a
light port 72 of the endoscope 60.
[0096] FIG. 3B illustrates an end view of the sheath 90 and
endoscope 60 from a distal end view 62, 92. The visual port 74 and
light post 72 of the endoscope 60 extend outward from the endoscope
60 at the proximal end 64.
[0097] FIG. 3C illustrates a close up end view of the distal end 92
of the sheath 90 of FIG. 3B. The sheath 90 includes a viewing face
114 proximate to a viewing lens 76 of an endoscope 60 (as
illustrated the viewing lens 76 is a 45 degree lens). The sheath 90
includes a flow director 158 that is a flexible flap 118 which is
located between the sheath 90 and the endoscope 60. The flexible
flap 118 is at least partially openable and closeable so that fluid
can be directed across the viewing scope 76 of the endoscope 60.
The flexible flap 118 is free of extension over the viewing lens 76
of the endoscope 60 so that vision of the endoscope 60 is not
impeded by the flexible flap 118.
[0098] FIG. 3D illustrates a close up side view of a sheath 90 of
FIG. 3A. The sheath 90 includes a distal end 92 with a viewing face
114 so that the endoscope can view through the sheath 90 as is
illustrated by viewing cone 78. The sheath 90 includes a slot 116
that receives a portion of a flexible flap 118. The flexible flap
118 extends between an endoscope 60 and the sheath 90.
[0099] FIG. 3E illustrates a close-up view a distal end 92 of the
sheath 90 of FIG. 2. The distal end 92 includes a slot 116 that
extends through the sheath 90 and receives a flexible flap 118. The
sheath 90 includes a dimple 134 along its length that contacts an
endoscope (not shown) so that the endoscope is moved and a gap is
formed in a selected region between the endoscope and sheath 90.
The gap creates a lumen and/or conduit between the endoscope and
the sheath for fluid to travel through.
[0100] FIG. 3F illustrates a perspective view of a sheath 90 and an
endoscope 60. The endoscope 60 as illustrated has a viewing lens 76
with a 0 degree angle and a flexible flap 118 that extends between
the sheath 90 and the endoscope 60. A portion of the flexible flap
118 extends through a slot 116 in the sheath 90 so that a
connection is formed between the flexible flap 118 and the sheath
90.
[0101] FIG. 3G illustrates a perspective view of a slot 116 in the
tube 96 of a sheath 90.
[0102] FIG. 3H illustrates a bottom perspective view of a flow
director 158 that is configured as a flexible flap 118 that
substantially mirrors an angle of an endoscope (e.g., 75 degree
angle as shown). The flexible flap 118 includes a flap connector
300 that extends through a slot (not shown) in a tube of a sheath.
The flap connector 300 extends from a flap body 302 and the flap
body 302 includes a pair of flap directors 304 that are separated
by an optional slot 306.
[0103] FIG. 4 illustrates a sheath 90 including a dimple 134 and a
flow director 158. The dimple 134 is located along the length of
the shaft 90 so that the endoscope is biased to one side of the
sheath 90 forming a gap between the endoscope (not shown) and the
sheath 90. The sheath 90 includes a longitudinal axis 95 that
extends the length of the sheath 90. The distal end 92 of the
sheath 90 includes a first opening 124 and the flow director 158
which is configured as a second opening 126 that extends in a
direction 127 and forms an angle (a) with the longitudinal axis
95.
[0104] FIG. 5A-5B illustrate a sheath 90 having a first opening 124
and a second opening 126 at a distal end 92. FIG. 5A is a
perspective view of the sheath 90. The sheath 90 includes a
longitudinal axis 95 with a dimple 134 located along the
longitudinal axis. The sheath 90 has a second opening 126 that
extends in the direction 127 at an angle that is substantially
parallel to the longitudinal axis 90. The angle the second opening
126 extends is a 0.degree. angle relative to the longitudinal axis
95. FIG. 5B illustrates a distal end 92 view of the sheath 90
showing the shape of the first opening 124. The second opening 126
is located in the sheath and projects through the flange 136 that
extends partially around an outer edge of the sheath 90.
[0105] FIGS. 6A-6B illustrate a sheath 90 having a first opening
124 and a second opening 126. FIG. 6A illustrates the second
opening 126 extending in the direction 127 at an angle (.beta.)
relative to the longitudinal axis 95. The second opening 126 is a
flow director 158 that directs flow from the sheath at the angle
(.beta.). The angle (.beta.) as illustrated is a 60.degree. angle,
however, the angle may be a 0.degree., 30.degree., 45.degree.,
50.degree., or 70.degree.. FIG. 6B illustrates view of the proximal
end 92 of the sheath 90. The sheath 90 includes a first opening 124
and a second opening 126. The second opening 126 is located in a
flange 136 that extends partially around the sheath 90.
[0106] FIG. 7A illustrates a view of a flow director 158 that is an
end plug 190 which can be connected to an end of a sheath 90 (not
shown) to control flow of an irrigation fluid (not shown). The end
plug 190 includes a radially extending lip 192 that extends over a
cross bar 196 creating a channel 194 therebetween. The channel 194
terminates at a front wall 198 that changes the direction of the
fluid and distributes the fluid to a selected location. The end
plug 190 includes a pair of opposing connection arms 202 that
include a receiving region 204 therebetween for receiving and
connecting to a distal end of an endoscope (not shown).
[0107] FIG. 7B is a cross-sectional view of FIG. 7A along lines
7B-7B. The flow director 158 when configured as an end plug 190
includes a radially extending lip 192 extending above a cross bar
196 forming a channel 194 therebetween. The channel 194 turns at a
front wall 198 so that fluid extends in the direction 200 and then
turns in the direction 200'. A receiving region 204 forms a through
hole that extends between two opposing connection arms 202 that
form a connection with an endoscope (not shown).
[0108] FIGS. 8A1 through 8D illustrate a sheath 90 that is a
multi-lumen sheath 160. The sheath 90 is connected to a hub 98 that
includes a port 106 for ingress and egress of fluids. FIG. 8A1
illustrates a cross-sectional view of a multi-lumen sheath 160. A
proximal end 94 of the sheath 90 includes a flare 110 with a facing
surface 112 extending therefrom. The hub 98 includes a port 106 and
the hub 98 is connected to a tube 96. The tube 96 has a first lumen
168 having a length 170 and a second lumen 172 having a length 174
that are different so that the first lumen 168 extends beyond the
second lumen 172 in the proximal end 94 direction. The first lumen
168 and the second lumen 172 are separated by an inner wall
176.
[0109] FIG. 8A1 illustrates a close-up view of the first lumen 168
and the second lumen 172 of the multi-lumen sheath 160. The first
lumen 168 and the second lumen 172 are separated by an inner wall
176. The inner wall includes a weep port 182 that moves fluid
across a distal end of an endoscope (not shown) to clean the
endoscope. A lavage port 184 is located in the end of the sheath
160 at the end so that fluid may extend out of the end to irrigate
an area surrounding the sheath 160.
[0110] FIG. 8A2 illustrates a close up view of the distal end 92 of
the multi-lumen sheath 160 of FIG. 8A1. The multi-lumen sheath 160
includes an inner wall 176 that creates a first lumen 168 and a
second lumen 172. The inner wall 176 includes a weep port 182
extend there through. A lavage port 184 extends through the distal
end of the multi-lumen sheath 160 so that fluid can flow out the
distal end of the multi-lumen sheath 160.
[0111] FIG. 8B illustrates cross-sectional view the sheath 90 of
FIG. 8A2 cut along line 8B-8B. As illustrated the first lumen 168
and the second lumen 172 are separate and the inner wall 176
extends there between.
[0112] FIG. 8C is an end view of the sheath 90 of FIG. 8A2 when
viewed from the end along line 8C-8C. As illustrated only the first
lumen 168 is visible and the second lumen 172 is connected to a
lavage port 184 that extends through the distal end 92 of the
sheath 90.
[0113] FIG. 8D illustrates a perspective view of the multi-lumen
sheath 160. The end of the multi-lumen sheath 160 includes an inner
wall 176 that creates and separates a first lumen 168 and a second
lumen 172. The inner wall 176 includes a weep port 182 that allows
irrigation fluid and/or suction to extend from the second lumen 172
into the first lumen 168 to clean an endoscope (not shown). A
lavage port 184 extends from an end of the second lumen 172 and the
sheath 160 so that irrigation fluid and/or suction can be applied
from the distal end.
[0114] FIG. 9 illustrates an endoscope cleaning system 2. The
endoscope cleaning system 2 includes an irrigation source 4
connected to an irrigation line 6 that is connected to a control
module 30 that includes a pump 14 for controlling flow of
irrigation fluid between the irrigation source 4 and a sheath 90.
The control module 30 includes a power source 20 and a controller
and/or microprocessor (not shown) that is in communication with a
user interface 31 for controlling the control module 30. The system
2 includes a suction source 10 that is connected to the control
module 30. The control module 30 includes a valve 8 in the suction
line that is connected to a sheath 90, which receives a portion of
an endoscope. The valve 8 for controls suction between the suction
source 10 and the sheath 90 so that suction may be turned off
during all or portion of the application cycle of the irrigation
fluid. The irrigation line 6 and the suction line 12 are connected
together at a common fitting 16 that connects the irrigation line 6
and the suction line 12 to a common line 18/delivery line 42 for
supplying a fluid or suction to the sheath 90 for cleaning an
endoscope (not shown).
[0115] FIG. 10 illustrates a control module 30 that includes a pump
14, a power source 20, a user interface 31, and one or more valves
8. The irrigation source 4 is gravity fed into the pump 14 and then
the pump 14 sends fluid through the irrigation line 6 to the sheath
90 so that the sheath 90 washes the endoscope 60. The suction
source 10 is connected to a valve 8 of the control module 30 that
controls suction being drawn through the suction lines 12. Both the
irrigation lines 6 and the suction lines 12 are connected to a
common fitting 16 and a single common line 18/delivery line 42
extend from the common fitting 16 to the sheath 90. The suction
line 12 may include a valve 8 that is a passive check valve to
prevent irrigation fluid from being forced into the suction
line.
[0116] Any numerical values recited herein include all values from
the lower value to the upper value in increments of one unit
provided that there is a separation of at least 2 units between any
lower value and any higher value. As an example, if it is stated
that the amount of a component or a value of a process variable
such as, for example, temperature, pressure, time and the like is,
for example, from 1 to 90, preferably from 20 to 80, more
preferably from 30 to 70, it is intended that values such as 15 to
85, 22 to 68, 43 to 51, 30 to 32 etc. are expressly enumerated in
this specification. For values which are less than one, one unit is
considered to be 0.0001, 0.001, 0.01 or 0.1 as appropriate. These
are only examples of what is specifically intended and all possible
combinations of numerical values between the lowest value and the
highest value enumerated are to be considered to be expressly
stated in this application in a similar manner.
[0117] Unless otherwise stated, all ranges include both endpoints
and all numbers between the endpoints. The use of "about" or
"approximately" in connection with a range applies to both ends of
the range. Thus, "about 20 to 30" is intended to cover "about 20 to
about 30", inclusive of at least the specified endpoints.
[0118] The disclosures of all articles and references, including
patent applications and publications, are incorporated by reference
for all purposes. The term "consisting essentially of" to describe
a combination shall include the elements, ingredients, components
or steps identified, and such other elements ingredients,
components or steps that do not materially affect the basic and
novel characteristics of the combination. The use of the terms
"comprising" or "including" to describe combinations of elements,
ingredients, components or steps herein also contemplates
embodiments that consist essentially of the elements, ingredients,
components or steps. By use of the term "may" herein, it is
intended that any described attributes that "may" be included are
optional.
[0119] Plural elements, ingredients, components or steps can be
provided by a single integrated element, ingredient, component or
step. Alternatively, a single integrated element, ingredient,
component or step might be divided into separate plural elements,
ingredients, components or steps. The disclosure of "a" or "one" to
describe an element, ingredient, component or step is not intended
to foreclose additional elements, ingredients, components or
steps.
[0120] It is understood that the above description is intended to
be illustrative and not restrictive. Many embodiments as well as
many applications besides the examples provided will be apparent to
those of skill in the art upon reading the above description. The
scope of the teachings should, therefore, be determined not with
reference to the above description, but should instead be
determined with reference to the appended claims, along with the
full scope of equivalents to which such claims are entitled. The
disclosures of all articles and references, including patent
applications and publications, are incorporated by reference for
all purposes. The omission in the following claims of any aspect of
subject matter that is disclosed herein is not a disclaimer of such
subject matter, nor should it be regarded that the inventors did
not consider such subject matter to be part of the disclosed
inventive subject matter.
* * * * *