U.S. patent number 3,800,799 [Application Number 05/299,515] was granted by the patent office on 1974-04-02 for irrigation adapter.
This patent grant is currently assigned to The Kendall Company. Invention is credited to Daniel M. McWhorter.
United States Patent |
3,800,799 |
McWhorter |
April 2, 1974 |
IRRIGATION ADAPTER
Abstract
An irrigation adapter which is connectable to a catheter and a
drainage tube in a liquid drainage system. The adapter includes a
flexible body member having a longitudinally extending main
channel, a side arm having a channel extending through the side arm
and communicating with the main channel through an opening
intermediate the ends of the body member, and a pouch having an
elongated cavity communicating with the main channel through an
opening. The adapter also includes a control tube having an outside
diameter of a size to sealingly engage the inside of the body
member in the main channel of the distal portion of the body
member, a first end fixed in the main channel adjacent a proximal
end of the body member, and a second free end extending into the
body member past the openings. The free end is movable between a
first position in the main channel and a second position in the
pouch by flexing or extending the body member. Thus, the free end
sealingly engages the inside of the body member in the first
position to prevent passage of liquid into the side arm and permit
liquid drainage through the adapter, and the free end is receivable
in the pouch cavity in the second position to close the drainage
tube and permit irrigation of the catheter through the side
arm.
Inventors: |
McWhorter; Daniel M. (Arlington
Heights, IL) |
Assignee: |
The Kendall Company (Walpole,
MA)
|
Family
ID: |
23155147 |
Appl.
No.: |
05/299,515 |
Filed: |
October 20, 1972 |
Current U.S.
Class: |
604/249; 285/260;
604/540; 251/342; 604/256 |
Current CPC
Class: |
A61M
39/02 (20130101) |
Current International
Class: |
A61M
39/02 (20060101); A61m 025/00 () |
Field of
Search: |
;128/213,214,274,348-351,247,275 ;285/12,260 ;137/610 ;251/342 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Truluck; Dalton L.
Attorney, Agent or Firm: Sprunger; Powell L.
Claims
I claim:
1. An adapter for a catheter and a drainage tube in a liquid
drainage system, comprising:
a flexible body member having a main channel extending
longitudinally through the body member, a distal end for attachment
to said catheter with said main channel communicating with a
drainage lumen in the catheter, a proximal end for attachment to
said drainage tube, an irrigation side arm having an irrigation
channel extending through the side arm and communicating with the
main channel through an opening intermediate the proximal and
distal ends of said body member, and a pouch having an elongated
cavity communicating with the main channel through an opening;
and
a control tube having an outside diameter of a size to sealingly
engage the inside of the body member in the main channel of the
distal portion of the body member, a first end fixed in the main
channel adjacent the proximal body member end with a lumen in said
control tube communicating with the drainage tube through said
first end, and a second free end extending from the first end into
the body member past the openings, said free end being movable
between a first position in the main channel and a second position
in the pouch cavity by flexing the body member, whereby the free
end sealingly engages the inside of the body member in said first
position to prevent passage of liquid into the irrigation channel
and permit liquid drainage from the catheter to said drainage tube,
and the free end is receivable in the pouch cavity in said second
position to close the drainage tube and permit passage of liquid
between the side arm channel and the distal end of the main channel
for irrigation of the catheter through said irrigation channel.
2. The adapter of claim 1 wherein said control tube is integral
with the drainage tube.
3. An adapter for a liquid drainage system comprising:
a flexible body member having a main channel extending
longitudinally through the body member, a proximal end, a distal
end, a side arm having a channel extending through the side arm and
communicating with the main channel through an opening intermediate
the ends of the body member, and a pouch having an elongated cavity
communicating with the main channel through an opening, and
a control tube having an outside diameter of a size to sealingly
engage the inside of the body member in the main channel of the
distal portion of the body member, a first end fixed in the main
channel adajcent the proximal end of said body member, and a second
free end extending from the first end into the body member past the
openings, said free end being movable between a first position in
the main channel and a second position in the pouch cavity by
flexing the body member, whereby the free end sealingly engages the
inside of the body member in said first position to prevent passage
of liquid into the side arm channel and permit liquid drainage
through the main channel and control tube, and the free end is
receivable in the pouch cavity in said second position to close the
control tube, open the side arm channel, and permit passage of
liquid between the side arm channel and the distal end of the main
channel.
4. The adapter of claim 3 wherein said side arm channel and main
channel define an acute angle relative to the proximal body member
end.
5. The adapter of claim 3 wherein the inside diameter of at least a
portion of the pouch cavity is approximately equal to the outside
diameter of said control tube.
6. The adapter of claim 5 wherein said pouch includes an end
portion defining a portion of said cavity generally aligned with
the main channel, whereby the pouch end portion flexes to receive
the free end of the control tube in the second position and
frictionally engages the control tube to seal its free end.
7. The adapter of claim 3 wherein said pouch cavity extends from
the main channel for a distance slightly greater than said free
tube end with the control tube in said second position.
8. The adapter of claim 3 wherein said free tube end extends in the
main channel slightly past the pouch and side arm openings with the
control tube in said first position.
9. The adapter of claim 3 including a cap removably positioned on
the outer end of the side arm.
10. The adapter of claim 3 wherein the pouch opening faces the side
arm opening.
11. The adapter of claim 3 wherein the elongated cavity and main
channel define an acute angle relative to the distal body member
end.
12. The adapter of claim 3 wherein the outside diameter of the free
end of the control tube is approximately equal to the inside
diameter of the main channel in the distal portion of the body
member, whereby the free end of the control tube sealingly engages
the sides of the main channel intermediate the distal body member
end and the pouch and side arm openings in said first position.
13. The adapter of claim 3 wherein said body member includes an
inner ring in the main channel intermediate the distal body member
end and the pouch and side arm openings, and the outside diameter
of the free end of the control tube is approximately equal to the
inside diameter of said ring, whereby the free end of the control
tube sealingly engages the ring in said first position.
14. The adapter of claim 3 wherein the outer end of the pouch
includes an internal plug projecting into the elongated cavity from
said outer end, said plug having an outside diameter approximately
equal to the inside diameter of the free end of the control tube
and being received in the free end of the control tube in said
second position, whereby the plug sealingly engages the inside of
the free end of the control tube in the second position.
15. The adapter of claim 14 wherein said plug and the outer wall of
the pouch defines an annular slot having a width intermediate the
plug and pouch wall approximately equal to the width of the control
tube wall adjacent its free end.
Description
CROSS-REFERENCE TO RELATED APPLICATION
"Irrigation Connector with Shut-Off Valve", Serial No. 166,877,
filed July 28, 1971, invented by F. K. Villari and B. C. Patel, and
assigned to The Kendall Company, the assignee of the present
application.
BACKGROUND OF THE INVENTION
Field of the Invention
This invention relates to connectors for liquid drainage systems,
and more particularly to an adapter for selectively irrigating such
systems.
Description of the Prior Art
In the past, various types of systems have been utilized to drain
liquids from a cavity in a patient's body, such as the urinary
bladder. The procedure generally utilized to accomplish drainage is
to introduce one end of a catheter into the cavity, and connect the
catheter through a drainage tube to a receptacle for collecting the
liquid.
However, during use of such systems it is sometimes necessary to
periodically irrigate the catheter, or force liquid through the
catheter to alleviate a blocked condition in the catheter due to
the accumulation of sediments and clots, or to apply medication to
the cavity through the catheter. Since it is necessary to minimize
the possibility of infection to the patient, such systems are
preferably of the closed type to prevent contamination to the
system and possible infection to the patient. Consequently, it has
proven difficult to irrigate the catheter, while maintaining
aseptic conditions in the drainage system.
In an attempt to solve this problem Vaillancourt et al U.S. Pat.
No. 3,513,849 discloses an adapter which is connected between a
catheter and a drainage tube. However, it is desirable to have a
straight line path through such a connector for the drainage liquid
to permit the unrestricted flow of liquid, and such a device may be
susceptible to leakage into the drainage tube during irrigation,
particularly where different size syringe tips are utilized for
irrigation. The related application "Irrigation Connector with
Shut-Off Valve" discloses an irrigation connector having a valve to
control the passage of fluid through the connector.
SUMMARY OF THE INVENTION
A principal feature of the present invention is the provision of an
irrigation adapter for a liquid drainage system to selectively
control the passage of drainage liquid from a catheter to a
drainage tube through the adapter.
The adapter of the present invention includes a flexible body
member having a main channel extending longitudinally through the
body member, a distal end for attachment to the catheter with the
main channel communicating with a drainage lumen in the catheter,
and a proximal end for attachment to the drainage tube. The body
member has an irrigation side arm having a channel extending
through the side arm and communicating with the main channel
through an opening intermediate the ends of the body member. The
body member also includes a pouch having an elongated cavity which
communicates with the main channel through an opening. The adapter
includes a control tube having an outside diameter of a size to
sealingly engage the inside of the body member in the main channel
of the distal portion of the body member. A first end of the
control tube is fixed in the main channel adjacent the proximal
body member end, with a lumen in the control tube communicating
with the drainage tube through the first end. A second free end of
the control tube extends from the first end into the body member
past the openings, with the free end of the tube being movable
between a first position in the main channel and a second position
in the pouch by flexing or extending the body member. A cap is
removably positioned on the outer end of the side arm.
Another feature of the present invention is that the free end of
the control tube sealingly engages the inside of the body member in
the first position to prevent passage of liquid into the side arm
and permit liquid drainage from the catheter to the drainage
tube.
A further feature of the invention is that the free end of the
control tube is receivable in the pouch cavity in the second
position to close the drainage tube and permit irrigation of the
catheter through the side arm.
Still another feature of the invention is that the control tube may
be integral with the drainage tube.
Yet another feature of the invention is that in one embodiment the
outer end of the pouch flexes to receive the free end of the
control tube in the second position and frictionally engages the
control tube to seal its free end from liquid during irrigation of
the catheter.
Another feature of the invention is that the sealed control tube in
the second position prevents contamination to the drainage tube
when the cap is removed from the side arm for irrigation of the
system.
Further features will become more fully apparent in the following
description of the embodiments of this invention and from the
appended claims.
DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a fragmentary perspective view of a liquid drainage
system, taken partly in section, having an irrigation adapter of
the present invention, with the adapter being in position to drain
liquid from a catheter to a drainage tube in the system;
FIG. 2 is a fragmentary perspective view, partly broken away, of
the drainage system of FIG. 1, with the adapter being placed in
position for irrigating the catheter;
FIG. 3 is a fragmentary perspective view, taken partly in section,
of the drainage system of FIG. 1, with the tip of a syringe
inserted into a side arm of the adapter for irrigating the
catheter;
FIG. 4 is a fragmentary perspective view, taken partly in section,
of a liquid drainage system having another embodiment of the
adapter of the present invention;
FIG. 5 is a fragmentary sectional view of the adapter of the
present invention showing alternative sealing means in the main
channel of the adapter;
FIG. 6 is a fragmentary sectional view of the adapter of the
present invention showing alternative sealing means in a pouch of
the adapter;
FIG. 7 is a fragmentary sectional view of another embodiment of the
invention; and
FIG. 8 is a fragmentary sectional view of another embodiment of the
invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, a liquid drainage system, generally
designated 20, is shown having an irrigation adapter designated
generally 22 which is connected between a catheter 24 and a
drainage tube 26. The adapter 22 includes a flexible body member 28
which may be constructed of any suitable material, having flexible
properties, such as rubber or rubberized plastic, to provide the
body member with flexible characteristics for purposes described
below.
The body member 28 has a main channel 30 which extends
longitudinally through the body member 28, a distal end 32 for
attachment to the catheter 24 such that the main channel 30
communicates with a drainage lumen 34 in the catheter, and a
proximal end 36 for attachment to the drainage tube 26. The body
member 28 also includes an irrigation side arm 38 extending
outwardly from the main channel 30 and having an irrigation channel
40 extending through the side arm 38 and communicating with the
main channel 30 through an opening 42 intermediate the proximal and
distal ends of the body member. The body member 28 also includes a
closed-end pouch 44 extending outwardly from the main channel 30
and having an elongated cavity 46 which communicates with the main
channel 30 through an opening 48 which preferably faces the side
arm opening 42. Preferably, the elongated cavity 46 and main
channel 30 generally define an acute angle relative to the distal
body member end 32 for a purpose described below. A cap 47 is
removably positioned on the outer end of the side arm 38 to prevent
possible contamination to the system when the side arm is not in
use for irrigation, and a strap 49 connects the cap 47 to the side
arm 38 to retain it to the side arm when the cap is removed for
irrigation.
The adapter 22 also includes a control tube 50 which preferably has
an outside diameter approximately equal to the inside diameter of
the main channel 30 in the distal portion of the body member, and
which may be flexible although a relatively rigid control tube is
preferred. A first end 52 of the control tube 50 is fixed in the
main channel 30 adjacent the proximal body member end 36, and a
lumen 54a in the control tube communicates with a lumen 54b in the
drainage tube 26 through the first end 52 of the control tube 50.
In one embodiment, the control tube 50 is an integral extension of
the drainage tube 26, as shown in FIG. 1. However, as shown in FIG.
4, it is also contemplated that the control tube may be a separate
tube, with the drainage tube 26 being removably connected to the
proximal end 36 of the body member 28 such that the lumens 54a and
b communicate with each other. In either case, the first end 52 of
the control tube 50 may be secured to the inside of the proximal
body member end 36 by suitable means, such as adhesive 53.
The control tube 50 also has a second free end 56 which extends
from the first end 52 of the control tube 50 into the body member
28 past the side arm and pouch openings 42 and 48 when the control
tube is in position for draining the catheter. As illustrated in
FIGS. 1-3, the free end 56 of the control tube 50 is movable
between a first position with the free end 56 in the main channel
30 and a second position in the pouch cavity 46 by flexing the body
member 28. In the first position, as illustrated in FIG. 1, the
free end 56 sealingly engages the sides of the main channel 30
intermediate the distal body member end 32 and the openings 42 and
48. Thus, in the first position of the free end 56, liquid is
permitted to drain from the catheter 24 to the drainage tube 26
through the control tube 50, while liquid is prevented from passing
through the opening 42 into the side arm 38 and into the cavity
46.
If desired, sealing in the main channel with the control tube in
the first position may be accomplished in various other manners.
For example, as shown in FIG. 5, the body member has an inner ring
57 in the main channel 30 intermediate the distal end 32 of the
body member and the pouch and side arm openings 48 and 42,
respectively. The outside diameter of the free end 56 of the
control tube 50 is approximately equal to the inside diameter of
the ring 57, such that the free end of the control tube sealingly
engages the ring 57 in the first position. Alternatively, it is
apparent that a sealing ring may be positioned on the outside of
the control tube adjacent its free end to sealingly engage the
inside of the main channel. Also, the pouch and side arm openings
48 and 42, respectively, may be arranged such that the control tube
50 closes and seals them around their perimeters in the main
channel when the control tube is in the first position.
When it is desired to irrigate the catheter 24, the body member 28
is flexed and twisted slightly, as illustrated in FIG. 2, until the
free end 56 of the control tube 50 passes from the main channel 30
into the pouch cavity 46. Also, as discussed above, the pouch
cavity 46 preferably defines an acute angle with the main channel
30, to facilitate movement of the free end 56 into the cavity.
After the free end 56 of the control tube 50 has been received in
the pouch cavity 46, the body member 28 is released to securely
position the free end in the cavity, as shown in FIG. 3. The inside
diameter of at least a portion of the pouch cavity 46 is
approximately equal to the outside diameter of the control tube 50
in order to achieve a close fit in the second position of the free
end 56. In a preferred embodiment, as shown in FIG. 1, the pouch
also includes an end portion 60 which defines an end portion 62 of
the cavity 46 which is generally aligned with the main channel 30.
When the free end 56 of the control tube 50 is inserted into the
cavity 46, the end portion 60 of the pouch receives the free end 56
and frictionally engages the tube 50 in order to seal the free end
56 of the tube 50 from liquid during irrigation of the catheter.
Although the pouch 44 is preferably flexible, it is also
contemplated that the pouch may be made in the form of a rigid cup,
such that it frictionally engages.
Another embodiment of the adapter pouch is shown in FIG. 6, in
which the pouch 44 has an internal plug 63 projecting into the
cavity from its outer end. The plug 63 and the outer wall of the
pouch define an annular slot 65, and the outside or lateral
diameter of the plug 63 is approximately equal to the inside
diameter of the free end 56 of the control tube 50. Thus, the plug
is received in the free end of the control tube when it is moved to
the second position, and the plug sealingly engages the inside of
the free end of the control tube to prevent drainage through the
control tube in the second position. If desired, the width of the
slot 65 intermediate the plug 63 and pouch wall may be
approximately equal to the width of the control tube adjacent its
free end, as shown, such that the free end of the control tube
sealingly engages both the plug and the pouch wall.
To accomplish irrigation of the catheter, the cap 47 is removed
from the outer end of the side arm 38, and the tip T of a syringe S
is inserted into the irrigation channel 40 of the side arm 38 with
the control tube in its second position, as shown in FIG. 3.
Irrigation fluid is then injected from the syringe S through the
syringe tip T into the main channel 30 of the adapter 22 and the
drainage lumen 34 of the catheter 24. Thus, since the control tube
50 is sealed in the pouch cavity 46, irrigation liquid is prevented
from passing into the drainage tube during irrigation. Also, in the
embodiment of the adapter shown in FIG. 5, the ring 5 57 be
arranged to sealingly engage the tip of the syringe, if
desired.
Frequently, liquid columns form in drainage tubes and cause a
negative pressure. Consequently, when the systems are opened to the
atmosphere for irrigation, the negative pressure results in an
inrush of air into the drainage tubes, and since the air from the
atmosphere may be contaminated, possible contamination to the
systems may result. However, in the adapter of the present
invention, the free end 56 of the control tube 50 is sealed in the
pouch prior to removing the cap 47 for irrigation of the system,
and the drainage tube is sealed from the upstream portion of the
system. Hence, negative pressure which is present in the drainage
tube does not cause an inrush of air into the drainage tube when
the cap 47 is removed from the side arm.
Once irrigation of the catheter is complete, the free end 56 of the
control tube 50 is reinserted into its first position in the main
channel 30 by again flexing or extending the body member 28, and
the body member 28 is released. The control tube 50 is then located
in its first position, as shown in FIG. 1, and liquid drainage of
the system 20 continues as before. Accordingly, it is readily
apparent that irrigation and drainage of the system 20 is
accomplished by the adapter of the present invention in such a
manner that possibility of contamination to the system is
minimized.
The alternate embodiment of the present invention, as shown in FIG.
4 and described above, is utilized in a manner similar to the
embodiment of the adapter shown in FIGS. 1-3 to accomplish
irrigation and drainage of the system.
Another embodiment of the invention is illustrated in FIG. 7, which
is similar to the adapter and drainage system shown in FIG. 4,
except that a tube 70 is removably connected to the outer end of
the side arm 38. A lumen 72 in the tube 70 communicates with the
channel 40 in the side arm 38. Thus, in the first position of the
control tube 50 the lumen 54b of the tube 26 communicates through
the control tube with the lumen 34 in the catheter or tube 24, and
in the second position of the control tube the lumen 72 of the tube
70 communicates with the lumen 34 of the catheter 24, while the
pouch 44 closes the lumen 54b of the tube 26 in this position. Each
of the tubes 26 and 70 may be connected to a separate collection
receptacle, and the control tube 50 may be utilized to selectively
direct drainage of liquid from the catheter to either of the
receptacles.
Another embodiment of the invention is illustrated in FIG. 8 which
is similar to the embodiment shown in FIG. 7 except that the pouch
44 of the adapter of FIG. 7 has been replaced with a side arm 76
and a tube 78 which is removably attached to the outer end of the
side arm 76. The side arm 76 has a channel 80 extending through the
side arm which communicates with the main channel 30 through the
opening 48 and which communicates with a lumen 82 in the tube
78.
The adapter of FIG. 8 serves as a valve to establish communication
between the various tubes. In the first position of the control
tube 50, as shown in FIG. 8, communication is established between
the lumens 34 and 54b of the tubes 24 and 26, respectively, and the
lumens 82 and 72 of tubes 78 and 70, respectively, are sealed from
communication with the lumens 34 and 54b by the sealing engagement
of the control tube free end 56 in the main channel 30. If desired,
the control tube 50 may be arranged to seal one or both of the
openings 48 and 42 in the first position of the control tube to
prevent communication between the side arm channels 80 and 40. In
the second position of the control tube 50, the free end 56 of the
control tube is received in the channel 80 of the side arm 76. In
this position, communication is established between the lumens 82
and 54b of the tubes 78 and 26, respectively, through the control
tube 50, and communication is established between the lumens 34 and
72 of the tubes 24 and 70, respectively. Thus, the adapter serves
as a valve to selectively control the direction of fluid through
the tubes.
The foregoing detailed description is given for clearness of
understanding only, and no unnecessary limitations should be
understood therefrom, as modifications will be obvious to those
skilled in the art.
* * * * *