U.S. patent application number 11/680835 was filed with the patent office on 2007-09-06 for gas insufflation and suction/irrigation tubing.
This patent application is currently assigned to APPLIED MEDICAL RESOURCES CORPORATION. Invention is credited to John R. Brustad, Zoran Falkenstein, Nabil Hilal, Boun Pravong, Kennii Pravongviengkham.
Application Number | 20070208300 11/680835 |
Document ID | / |
Family ID | 38475676 |
Filed Date | 2007-09-06 |
United States Patent
Application |
20070208300 |
Kind Code |
A1 |
Pravong; Boun ; et
al. |
September 6, 2007 |
GAS INSUFFLATION AND SUCTION/IRRIGATION TUBING
Abstract
A medical tubing being flexible and kink-free as gas
insufflation tubing and non-collapsible as suction/irrigation
tubing is provided. The tubing is lightweight and thin-walled. The
tubing has a generally rigid but thin walled with a structural
shape or is generally soft and thin-walled tubing with a hard
re-enforcement.
Inventors: |
Pravong; Boun; (Corona,
CA) ; Pravongviengkham; Kennii; (Lake Elsinore,
CA) ; Hilal; Nabil; (Laguna Niguel, CA) ;
Brustad; John R.; (Dana Point, CA) ; Falkenstein;
Zoran; (Rancho Santa Margarita, CA) |
Correspondence
Address: |
APPLIED MEDICAL RESOURCES CORPORATION
22872 Avenida Empresa
Rancho Santa Margarita
CA
92688
US
|
Assignee: |
APPLIED MEDICAL RESOURCES
CORPORATION
Rancho Santa Margarita
CA
|
Family ID: |
38475676 |
Appl. No.: |
11/680835 |
Filed: |
March 1, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60777959 |
Mar 1, 2006 |
|
|
|
Current U.S.
Class: |
604/96.01 ;
604/525 |
Current CPC
Class: |
F16L 11/15 20130101;
A61M 1/008 20130101; A61M 39/08 20130101; F16L 11/115 20130101;
F16L 27/12 20130101; A61M 13/003 20130101 |
Class at
Publication: |
604/96.01 ;
604/525 |
International
Class: |
A61M 29/00 20060101
A61M029/00; A61M 25/00 20060101 A61M025/00 |
Claims
1. A gas insufflation, suction and irrigation medical tubing
comprising: a tubular body having a proximal end, a distal end and
a lumen, the lumen extending from the proximal end to the distal
end of the tubular body; and a support coupled to the tubular body,
the support being less compliant than the tubular body.
2. The tubing of claim 1 wherein the tubular body has a shape
arranged to accommodate the support and the tubular body has a wall
thickness that is less than the wall thickness of the support.
3. The tubing of claim 2 wherein the tubular body has
convolutions.
4. The tubing of claim 3 wherein the tubular body has asymmetrical
corrugations.
5. The tubing of claim 1 wherein the support comprises a wire
connected to the tubular body.
6. The tubing of claim 5 wherein the wire is plastic.
7. The tubing of claim 6 wherein the wire is braided.
8. The tubing of claim 6 wherein the wire is coiled.
9. The tubing of claim 6 wherein the wire is formed into a mesh
pattern.
10. The tubing of claim 1 wherein the support comprises a plurality
of interconnecting rings connected to the tubular body.
11. The tubing of claim 1 wherein the tubular body is a first outer
tubular body and further comprising a second inner tubular body and
a third inner tubular body, each having a length and diameter less
than a length and diameter of the first outer tubular body, the
second inner tubular body extending coaxially with the first outer
tubular body within the lumen of the first outer tubular body and
the third tubular body extending coaxially with the second outer
tubular body within the second outer tubular body.
12. The tubing of claim 1 the tubular body is a first outer tubular
body and further comprising a second inner tubular body, the second
inner tubular body extending coaxially with the first outer tubular
body within the lumen of the first outer tubular body, the second
inner tubular body being less compliant than the first outer
tubular body.
13. The tubing of claim 1 wherein the proximal end of the tubular
body is arranged to be coupled to a vacuum, an irrigator and a gas
insufflator.
14. A gas insufflation, suction and irrigation medical tubing
comprising: a tubular body having a proximal end, a distal end and
a lumen, the lumen extending from the proximal end to the distal
end of the tubular body; a support coupled to the tubular body, the
support being less compliant than the tubular body; and a container
having a housing and a shaft enclosed in and connected to the
housing, the tubular body being housed in the housing.
15. The tubing of claim 14 wherein the distal end of the tubular
body extends from the housing and the proximal end of the tubular
body is enclosed in the housing with portions of the tubular body
between the proximal and distal ends of the tubular body enclosed
in the housing and arranged to encircle the shaft.
16. The tubing of claim 15 wherein the shaft is rotatable.
17. The tubing of claim 15 wherein the shaft is a first shaft and
further comprising a second shaft, the second shaft enclosed in the
housing and being parallel to the first shaft.
18. The tubing of claim 17 wherein the tubular body is arranged to
encircle the first and second shafts.
19. The tubing of claim 17 wherein the tubular body is arranged to
encircle the first and second shafts in a figure eight pattern.
20. A gas insufflation, suction and irrigation medical tubing
comprising: a lightweight tubular body having a proximal end, a
distal end and a lumen, the lumen extending from the proximal end
to the distal end of the tubular body; and a support coupled to the
tubular body and having means for increasing flexibility, resisting
kinks and withstanding vacuum and irrigation pressures.
21. The tubing of claim 20 wherein the means for increasing
flexibility, resisting kinks and withstanding vacuum and irrigation
pressures comprises a plurality of convolutions along the tubular
body and a plurality of coiled wire disposed within the plurality
of convolutions.
22. The tubing of claim 21 wherein the vacuum pressure is about 1
Torr and the irrigation pressure of about 16 psi.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional
Application No. 60/777,959 filed Mar. 1, 2006, the disclosure of
which is hereby incorporated by reference as if set forth in full
herein.
BACKGROUND
[0002] The present invention generally relates to tubing used in
surgical procedures and, in particular, gas insufflation and
suction/irrigation tubing.
[0003] In surgical procedures employing tubing, it is desirable to
utilize tubing that is quite flexible and light weight. This is
desired as the tubing typically connects from an apparatus outside
the sterile field to a connection point at the patient site where
it will be within the working field of the surgical staff. Rigid,
stiff and non-flexible tubing is often less desirable being
inconvenient or cumbersome to work with.
[0004] Medical tubing is largely tubing, where tradeoffs of
features, such as flexibility, lightweight, kink-free, and
non-collapsible are common.
SUMMARY
[0005] In general, high mechanical flexibility and being kink-free
are especially of interest for gas insufflation tubing while being
non-collapsible is especially of interest for suction/irrigation
tubing. Being lightweight and thin-walled are desirable for both
applications. Various aspects of various medical tubing being
convenient, such as being flexible and lightweight, and functional,
such as being kink-free and non-collapsible are provided. Such a
combination can be met by providing generally rigid but thin-wall
tubing with a structural shape or by providing generally soft and
thin-walled tubing with a generally hard re-enforcement.
[0006] A flexible, kink-free, non-collapsing and lightweight
medical tubing to communicate either a vacuum and/or a stream of
gas or fluid from/to the surgical site, introducing carbon dioxide
in gas insufflation systems for laparoscopic procedures, the
respective utilization of a vacuum or a saline solution for
suction/irrigation systems in laparoscopy or general surgery, is
provided. At the same time and sometimes depending on the
application, tubing having a kink-free, non-collapsing or
pressure-resistant arrangement can seem to contradict flexibility.
For example, for the tubing in suction/irrigation systems where the
tubing can sustain working pressures of about 16 psi, or a vacuum
of about 1 Torr, respectively.
[0007] In one aspect, a gas insufflation, suction and irrigation
medical tubing is provided. The tubing comprises a tubular body
having a proximal end, a distal end and a lumen. The lumen extends
from the proximal end to the distal end of the tubular body and a
support is coupled to the tubular body. The support is less
compliant than the tubular body.
[0008] In one aspect, a gas insufflation, suction and irrigation
medical tubing is provided. The tubing comprises a tubular body
having a proximal end, a distal end and a lumen. The lumen extends
from the proximal end to the distal end of the tubular body and a
support is coupled to the tubular body. The support is less
compliant than the tubular body. The tubular body is housed in
housing of a container in which the housing has a shaft enclosed in
and connected to the housing.
[0009] In one aspect, a gas insufflation, suction and irrigation
medical tubing comprises a lightweight tubular body having a
proximal end, a distal end and a lumen. The lumen extends from the
proximal end to the distal end of the tubular body. A support is
coupled to the tubular body and has means for increasing
flexibility, resisting kinks and withstanding vacuum and irrigation
pressures.
[0010] Many of the attendant features of the present invention will
be more readily appreciated as the same becomes better understood
by reference to the foregoing and following description and
considered in connection with the accompanying drawings in which
like reference symbols designate like parts throughout.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1A is a side view of medical tubing with a single
lumen;
[0012] FIG. 1B is a side view of medical tubing with multiple
lumens;
[0013] FIG. 2 is a side view of convoluted medical tubing in
accordance with various aspects of the present invention;
[0014] FIG. 3 is a side view of corrugated medical tubing in
accordance with various aspects of the present invention;
[0015] FIG. 4A is a side view of a reinforced convoluted medical
tubing in an expanded or resting state in accordance with various
aspects of the present invention;
[0016] FIG. 4B is a side view of a reinforced convoluted medical
tubing in a compressed state in accordance with various aspects of
the present invention;
[0017] FIG. 5 is a side view of corrugated tubing having asymmetric
corrugations in accordance with various aspects of the present
invention;
[0018] FIGS. 6A-6B are side views of reinforced medical tubing in
accordance with various aspects of the present invention;
[0019] FIG. 7 illustrates a side view of dual concentric medical
tubing in accordance with various aspects of the present
invention;
[0020] FIG. 8 is a perspective view of telescopic medical tubing in
accordance with various aspects of the present invention;
[0021] FIGS. 9A, B are perspective views of spiraled medical tubing
in accordance with various aspects of the present invention;
[0022] FIGS. 1A, B are perspective views of collapsible medical
tubing in accordance with various aspects of the present
invention;
[0023] FIGS. 11A, B are cross-sectional side views of
"ball-and-socket" medical tubing in accordance with various aspects
of the present invention; and
[0024] FIGS. 12-13 are side views of a storage or container for
holding medical tubing such as those provided in reference to FIGS.
1 through 10 or described throughout this specification in
accordance with various aspects of the present invention.
DETAILED DESCRIPTION
[0025] Referring now to FIGS. 1A and 1B, medical tubing 3 comprises
of straight-walled plastic tubing. The tubing 3 can carry either
single or multi-lumen conduits, and can comprise of single tube 5
or multiple tubes 7,9. In one aspect, the multiple tubes 7,9 are
permanently attached to each other. The manufacturing process
utilized is an extrusion process. The optimization of both material
hardness and wall thickness calls for generally soft plastic
material with moderate wall thickness (1-2 mm). The optimization
reflects a compromise between being kink-free, flexibility and
vacuum compatible (i.e., preventing the tubing to collapse radially
under vacuum).
[0026] FIG. 2 illustrates a structural re-enforcement of a
thin-walled (sub-mm), but generally stiff tubing 11. As such,
medical tubing 11 having a generally rigid wall that utilizes a
convoluted tube shape 13 as structural enforcement of the tubing is
provided. In comparison to unshaped (straight) tubing, the
convoluted shape enables the tubing to be both flexible and
kink-free. In difference to conventional "straight" tubing, the
tubing shows a spiral-like enlargement 13 of the tube diameter. The
wall thickness at the convolutions 13 remains the same as the
remaining tubing. The convolutions allow the tubing to be flexible,
while the generally stiff wall material enables the tubing to be
vacuum-compatible (i.e., to resist radial compression). At the same
time, the increased overall tube diameter at the convolution sites
enables the tube to be kink-free when being bent or coiled. Because
of the structural enforcement, the thin walled tubing can be
applied for both pressure and vacuum cases.
[0027] The convolution 13 of the tubing 11 also re-enforces the
tube regarding radial and axial compression, which makes the tubing
vacuum compatible. Manufacturing processes for this kind of tubing
in one aspect comprises of blow-molding, where a (straight) tubing
would be placed in the center of a mold, and applied with some
positive (air) pressure while being heated. As a result, the
(straight) tubing expands to take the shape of the mold. While the
process of blow molding can be restricted to production of defined
lengths of tubing, a blow extrusion process enables the continuous
production of this type of tubing. Here, a (straight) tube is being
extruded and fed into two moving "mold-like" blocks. Similarly to
blow molding, application of positive pressure into the tube (while
being extruded) allows the tube to take the convoluted shape.
Continuous movement of the "mold-like" blocks on a rotating
conveyor assembly enables production of continuous lengths of the
tubing.
[0028] In FIG. 3, a structural re-enforcement thin-walled (sub-mm)
stiff tubing 15 is shown. As such, a medical tubing 15 that
utilizes a corrugated shape 17 as structural enforcement of the
tubing is provided. The tubing provides ring-like enlargements 17
of the tube diameter where the wall thickness at the corrugated
remains the same as the remaining tubing. The periodic corrugations
17 allow the tubing to be flexible, while the generally stiff wall
material enables the tubing to be vacuum-compatible (i.e. to resist
radial compression). At the same time, the increased overall tube
diameter at the corrugation sites enables the tube to be kink-free
when being bent or coiled.
[0029] In comparison to unshaped (straight) tubing, the corrugated
shape also enables the tubing to be both flexible and kink-free.
Similar to the convoluted re-enforcement, the corrugation of the
tubing also re-enforces the tube regarding radial and axial
compression, which makes the tubing vacuum compatible.
Manufacturing processes for corrugated tubing comprises of
blow-molding and blow extrusion. In difference to convoluted
tubing, corrugated tubing can be compressed axially. Depending on
the shape of the corrugation, the corrugations can (permanently)
"collapse" on themselves, which permanently reduces the size of the
tubing. The tubing can again be expanded to its original length by
pulling axially on the tubing.
[0030] FIGS. 4a and 4b illustrate a generally thin and soft tube 21
with a generally hard structural re-enforcement 23. As such, in one
aspect, medical tubing 21 that utilizes a mechanical re-enforcement
23 within soft and/or straight-walled tubing is provided. An
example of such a re-enforcement is shown as a metallic and/or
plastic coiled wire. The coiled wire 23 is connected to the thin
and soft outer tube wall. The generally thin wall of the tube 21
allows axial compression (and size reduction) of the tube 21, while
the generally hard coiled wire 23 prevents radial compression. If
the spiral coil is also stiff enough in axial direction, this
tubing can also be used for vacuum applications and can be very
kink-resistant. To reduce the overall length of the tubing during
storing, the tube can be mechanically compressed axially, as shown
in FIG. 4b.
[0031] In comparison to unshaped (straight) tubing, the
re-enforcement 23 allows the use of a thinner tube wall of tube 21
to be both flexible and kink-free. Depending on the material and
material thickness of both the tube wall and the re-enforcement,
the arrangement can also sustain radial and axial compression,
which makes the tubing vacuum compatible. Examples of such tubing
in one aspect would be a (steel) braided mesh, which is
encapsulated within (thin-walled) straight tubing. An extrusion,
molding, other types of processes, such as one described in U.S.
patent application Ser. No. 10/766,138, filed Jan. 28, 2004, the
disclosure of which is hereby incorporated by reference as if set
forth in full herein, or a combination of processes, can accomplish
the coating process oft for example, coating a braided mesh within
thin-walled tubing. Another example for this type of tubing is the
encapsulation of a (stiff) spiral coil within (soft) straight
tubing. Potential manufacturing processes include co-extrusion,
extrusion of a straight tube over the coil, or other similar
processes referenced above of two similar materials. Depending on
the shape, material and material thickness used, the corrugations
can also enforce the tubing axially, which allows the use of this
type of tubing for vacuum applications.
[0032] In FIG. 5, corrugated tubing 25 with periodic tube
enlargements 27 are asymmetric in shape. The shaping of the
corrugations 27 allow the corrugations to "collapse" on themselves
during axial compression, which depending on the overall tube
diameter can reduce the effective length of the tubing 27. For
example, ratios for expanded to collapsed tube lengths can range
from 1.5 to 4 for tube diameters ranging from 1/4'' to about 1''.
When releasing the radial compression, the tubing 27 remains
"compressed" as the corrugations "snap" into the collapsed state.
In FIG. 5, tube sections are shown in both a compressed 29a and an
extended state 29b. At the same time, the collapsible tubing
remains flexible in both an extended and a collapsible state.
However, the high flexibility in the axial direction can cause the
collapsed (extended) tubing applied with pressure (vacuum) to be
forced into its extended (collapsed) state.
[0033] In one aspect, as shown in FIGS. 6A,B, medical tubing 31
with structural re-enforcements 33, 35 are provided. The soft
tubing 31 is re-enforced by an encapsulated, generally stiff mesh
33. While the soft tube material allows the tubing 31 to be
flexible, the generally hard plastic or metallic mesh 33 provides
mechanical support for the tubing to be kink-free and vacuum
resistant. In FIG. 6B, an encapsulated coil 35 gives the structural
re-enforcement of thin-walled, generally soft tubing 31. The
generally soft and thin tube material allows the tube 31 to be
flexible and the encapsulated generally hard coil 35 prevents the
tube from kinking on itself. When the spiral coil is sufficiently
stiff in axial direction, this tubing can also be vacuum
resistant.
[0034] In one aspect, a combination of several types of tubing is
provided that allows a combination of applications. An example that
illustrates such a combination would be placing straight tubing
into corrugated or convoluted (i.e., a very flexible and kink-free)
tubing. While the inner tubing can be applied with vacuum (while
not collapsing axially or radially), the lumen between the inner
and outer tube can be applied with pressure (such as from an
irrigation fluid). This arrangement is of particular interest for a
suction/irrigation system that allows high flexibility being
lightweight, while not collapsing and/or extracting under vacuum
pressure.
[0035] Referring to FIG. 7, in one aspect, a medical tubing 41 with
one tube 43 positioned inside another tube 45 to combine two
different types of tubing is provided. This configuration can
provide the simultaneous application of vacuum to the inner tube,
and pressurized fluid to the outer tube or vice versa, e.g., for
use in suction/irrigation systems. While the (vacuum-compatible)
inner tubing prevents both tubes from collapsing axially under
vacuum, the thin-walled outer tubing will allow for kink-free
flexibility of both tubes.
[0036] Referring to FIG. 8, a size (axial) reduction of a
straight-walled tubing 60 is shown. Tube sections 61-69 of various
diameters and/or of various lengths are nested into each other. The
inner and outer wall diameters of adjacent tube sections in one
aspect are configured to deliver a snug fit, allowing sealing of
the tubing. The tubing can be extended into a telescope-like manner
by axially moving or pulling on the tubing.
[0037] Referring to FIGS. 9A-B, in one aspect, the spiraled medical
tubing 71 is generated by wrapping a tube wall 73 multiple times
over itself. In one aspect, by pulling one of the outer most ends
away from the opposing innermost end of the overlaying tube
wrapping can vary the length of the tube.
[0038] FIGS. 10a and 10b depict in one aspect a collapsible tubing
75 comprising inner rings 77 of a hard durometer that are connected
to soft and thin-walled outer tubing 79. The inner rings are
provided with a functional profile or configuration in that
consecutive rings snap-fit to each other, thereby allowing
reduction of the overall tube length and in various aspects a
permanent reduction. When pulling axially on the tubing, the
snap-fitted rings can be disengaged, thereby increasing the overall
length of the tubing. While this tubing is well suited for
conducting pressurized gas or fluids, the tubing may be less suited
for vacuum applications, as the thin-walled tube can axially
collapse under vacuum.
[0039] FIGS. 11a and 11b show another aspect of corrugated or
convoluted tubing 81 where periodic tube portions or section 83
comprises of "ball-and-socket" arrangements. The tubing becomes
collapsible by having neighboring elements "ball" 85 and "socket"
87 and vice versa nesting into each other, respectively. The
shaping of the corrugations or convolutions allow the tubing to
"collapse" during axial compression, or to "extend" during axial
pull, which depending on the overall tube diameter can change the
effective length of the tubing.
[0040] Referring now to FIG. 12, packaging or storage arrangement
is shown. The tubing 49 is stored in a coiled fashion inside a
storage container 51. By pulling the tubing out of the container,
any needed length of tubing can be dispensed. In FIG. 13, the
tubing 53 is stored in a double-coiled fashion inside a storage
container 55. The double coiling of the tubing 53 in one aspect is
generated by wrapping the collapsed or compressed tubing in a
"figure eight" pattern, which prevents twisting of tubing when
dispensing the tubing from the container 55. For example, when
pulling the tubing out of the container to dispense any needed
length of tubing, twisting (which can lead to kinking) of the
tubing is prevented.
[0041] Various aspects of kink-resistant and flexible plastic
tubing are provided for utilization with surgical instrumentation,
such as in gas insufflation systems and/or suction/irrigation
system in laparoscopic or general surgery. Generally, in various
aspects, the tubing is mechanically flexible and kink-resistant due
to the structural enforcement of a thin wall, which makes the
tubing also lightweight. Examples are of various aspects are
provided for corrugated, convoluted and also collapsible tubing, as
well as tube structures that utilize coiled or braided
wall-enforcements. Combination of various tubes provides a
mechanical enforcement that can allow simultaneous application of
vacuum/pressure, such as for suction/irrigation systems. Continuous
plastic extrusion, co-extrusion, blow-mold, or over-mold processes
can produce the various aspects of various tubing provided. Various
aspects of various packaging and/or storing of various tubes are
also provided that can, for example, provide small-sized tube
dispensers.
[0042] Accordingly, the present invention provides gas
insufflation, suction and irrigation medical tubing. Although this
invention has been described in certain specific embodiments, many
additional modifications and variations would be apparent to those
skilled in the art. It is therefore to be understood that this
invention may be practiced otherwise than specifically described,
including various changes in the size, shape and materials, without
departing from the scope and spirit of the present invention. Thus,
embodiments of the present invention should be considered in all
respects as illustrative and not restrictive, the scope of the
present invention to be determined by the appended claims and their
equivalents rather than the foregoing description.
* * * * *