U.S. patent application number 14/164376 was filed with the patent office on 2014-07-03 for local biomechanical and/or antimicrobial ligation device.
This patent application is currently assigned to COVIDIEN LP. The applicant listed for this patent is COVIDIEN LP. Invention is credited to Andrew Heeps, Jon Wojculewicz.
Application Number | 20140188162 14/164376 |
Document ID | / |
Family ID | 43244714 |
Filed Date | 2014-07-03 |
United States Patent
Application |
20140188162 |
Kind Code |
A1 |
Heeps; Andrew ; et
al. |
July 3, 2014 |
Local Biomechanical and/or Antimicrobial Ligation Device
Abstract
A ligation device is disclosed that is capable of containing a
fluid, e.g., a biomechanical medium or an antimicrobial solution.
The ligation device comprises an upper clip and a lower clip, each
having a locking feature that enables the upper clip and the lower
clip to be movably attached to each other.
Inventors: |
Heeps; Andrew; (Kensington,
CT) ; Wojculewicz; Jon; (Bristol, CT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
COVIDIEN LP |
Mansfield |
MA |
US |
|
|
Assignee: |
COVIDIEN LP
Mansfield
MA
|
Family ID: |
43244714 |
Appl. No.: |
14/164376 |
Filed: |
January 27, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
12542883 |
Aug 18, 2009 |
8641730 |
|
|
14164376 |
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Current U.S.
Class: |
606/220 |
Current CPC
Class: |
A61B 2017/00004
20130101; A61B 17/122 20130101; A61B 17/0643 20130101; A61B
2017/00889 20130101 |
Class at
Publication: |
606/220 |
International
Class: |
A61B 17/064 20060101
A61B017/064 |
Claims
1-11. (canceled)
12. A surgical fastener comprising: a fastener member having a
backspan and at least two prongs generally perpendicular to the
backspan; and a retainer portion having a connector and at least
two members attached to the connector, each member having an
aperture to receive and to retain the prongs, the retainer portion
defining a reservoir configured to store a fluid therein, wherein
the fastener member is releasably secured to the retainer portion,
the connector being flexible and allowing movement of the at least
two members toward and away from each other.
13. A surgical fastener comprising: a fastener member having a
backspan and legs generally perpendicular to the backspan with at
least one leg housing a reservoir; and a retainer portion with a
connector and at least two columnar members attached to the
connector, each columnar member having an aperture to receive and
retain the legs, a cutting feature extending from at least one of
the at least two columnar members.
14. The surgical fastener of claim 12 further comprising: a locking
surface extending from at least one prong that is removably
attached to a locking surface extending from at least one
aperture.
15. The surgical fastener of claim 12 further comprising a membrane
seal at an opening of the aperture.
16. The surgical fastener of claim 13 further comprising a membrane
seal at an opening of the reservoir.
17. The surgical fastener of claim 12, wherein the prongs have a
sharp distal tip.
18. The surgical fastener of claim 12, wherein the fluid is either
an antimicrobial solution or a biomechanical medium.
19. The surgical fastener of claim 12, further comprising a groove
located on the inner surface of the retainer portion.
20. The surgical fastener of claim 14, wherein each prong defines a
distal end that is disposed within the respective member of the
retainer portion when the fastener member is releasably secured to
the retainer portion.
21. The surgical fastener of claim 12, wherein at least one of the
at least two prongs includes a groove and the retainer portion
includes a protrusion configured to releasably engage the
groove.
22. The surgical fastener of claim 21, wherein the fastener member
is separable from the retainer portion when the groove is separated
from the protrusion of the retainer portion.
23. The surgical fastener of claim 12, wherein the retainer portion
defines a gap between the at least two members.
24. The surgical fastener of claim 12, wherein the fastener member
is removable from the retainer portion by moving the at least two
prongs toward one another.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Continuation of U.S. application Ser.
No. 12/542,883 filed Aug. 18, 2009 and the disclosure of the
above-identified application is hereby incorporated by reference in
their entirety.
BACKGROUND
[0002] 1. Technical Field
[0003] The present disclosure relates to apparatus and methods for
joining tissue portions and occluding vessels.
[0004] 2. Background of Related Art
[0005] Ligation devices are used to join tissue portions and to
occlude vessels. When tissue is held together by ligation devices
that penetrate the body, the risk of foreign matter entering the
site of a surgical wound is increased. To reduce the risk of
infection, ligation devices can be coated with an antimicrobial or
antibiotic material.
[0006] Once inserted into the body, ligation devices will remain in
place unless they are either physically removed or dissolved in the
body. The physical removal of non-resorbable ligation devices is a
complicated surgical procedure typically involving the use of
specially designed instruments.
SUMMARY
[0007] The present disclosure describes various methods and devices
for tissue ligation and/or vessel occlusion. A device for
delivering a localized antimicrobial solution or a biomechanical
medium is described.
[0008] A ligation device may include a fastener member having a
backspan and at least two prongs generally perpendicular to the
backspan, a retainer portion having a connector and at least two
columnar members attached to the connector, each columnar member
having an aperture to receive and to retain the prongs, and a
reservoir located within at least one of the columnar members. In
another embodiment, the ligation device may include a fastener
member having a backspan and legs generally perpendicular to the
backspan with at least one leg housing a reservoir, and a retainer
portion with a connector and at least two columnar members attached
to the connector, each columnar member having an aperture to
receive and retain the legs. The ligation device may also include a
locking surface extending from at least one prong that is removably
attached to a locking surface extending from at least one
aperture.
[0009] Within the reservoir, a fluid such as an antimicrobial
medium or solution may be stored. To facilitate storage of the
fluid, a membrane seal may be positioned at the opening of the
reservoir. Dispersion of the fluid may be facilitated by puncturing
the membrane seal upon insertion of the fastener member into the
retainer portion. The prongs of the fastener member may include a
sharp distal tip to facilitate the opening of the membrane seal. A
groove may be located on an inner surface of the retainer portion
to facilitate dispersion of the fluid.
[0010] The various aspects of the present disclosure will be more
readily understood from the following description when read in
conjunction with the appended figures.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] By way of description only, embodiments of the disclosure
will be described with reference to the accompanying drawings, in
which:
[0012] FIG. 1 is a side cross-sectional view showing a ligation
device according to one embodiment of the present disclosure;
[0013] FIG. 2 is a side cross-sectional view of the ligation device
of FIG. 1 showing a distal portion of an upper clip inserted into a
cavity of a lower leg;
[0014] FIG. 3 is a side cross-sectional view of the ligation device
of FIG. 2 showing the upper leg engaged in the cavity of the lower
leg;
[0015] FIG. 4 is a front view of a ligation device according to an
embodiment of the present disclosure; and
DETAILED DESCRIPTION
[0016] Particular embodiments of the present disclosure will be
described herein with reference to the accompanying drawings. As
shown in the drawings and as described throughout the following
descriptions, and is traditional when referring to relative
positioning on an object, the term "proximal" refers to the end of
the apparatus that is closer to the user and the term "distal"
refers to the end of the apparatus that is further from the user.
In the following description, well-known functions or constructions
are not described in detail to avoid obscuring the present
disclosure in unnecessary detail.
[0017] As seen in FIG. 1, a ligation device 100 is shown including
a fastener member 10 and a retainer portion 11. The fastener member
10 includes a backspan 7 and at least two prongs or legs 18 that
are generally perpendicular to the backspan 7. The retainer portion
11 includes a connector 6 and at least two columnar members 5
configured and adapted to receive the prongs 18 of the fastener
member 10 therein. The connector 6 is a generally U-shape member.
The connector 6 may be resilient or flexible. As such, the
connector 6 allows the columnar members 5 to move towards each
other and away from each other. Similarly, the backspan 7 may be
resilient or flexible, thereby allowing the fastener member 10 to
match the spacing between the columnar members 5 of the retainer
portion 11. At least one of the columnar members 5 is configured
and adapted to store a fluid 15 within a reservoir 14 within the
columnar member 6. A membrane seal 16 may be positioned on or
within the retainer portion 11 to facilitate storage of the fluid
15 within the reservoir 14. The fluid 15 is released from the
reservoir 14 upon insertion of the fastener member 10 into the
retainer portion 11. To facilitate release of the fluid 15 upon
insertion of the fastener member 10 into the retainer portion 11,
prongs 18 may include a sharp distal tip 9 that is configured and
adapted to puncture the membrane seal 16. Dispersion of the fluid
15 may be facilitated by a groove 8, as shown in FIG. 1, positioned
on the inner profile of the retainer portion 11. In an alternative
embodiment, the groove 8 may be positioned on the inner profile of
the fastener member 10.
[0018] As seen in FIGS. 1-3, prong 18 is shown having a recess 12
that is engagable with a protrusion 13 within the columnar member
8. Variations of this structure that are in the spirit of this
disclosure will be apparent to those skilled in the art. For
example, the prong 18 may have a protrusion that is engagable with
a recess within the columnar member 8. FIG. 3 shows the recess 12
engaged with the protrusion 13, thereby locking the fastener member
10 to the retainer portion 11. As shown in FIG. 3, the recess 12
can be disengaged form the protrusion 13 by sliding the retainer
portion 11 apart from the fastener member 10 in the direction of
arrow A. To facilitate movement of the fastener member 10 and the
retainer portion 11 apart from each other, the fastener member 10
and the retainer portion 11 may be formed from a material capable
or small defections, e.g., an elastic and/or resilient
material.
[0019] In an alternative embodiment, as seen in FIG. 4 ligation
device 200 includes an upper clip 20 and a lower clip 23. The upper
clip 20 includes a leg 20a including a reservoir 24 that is sealed
by a membrane 21. The lower clip 23 includes a cutting element 22
extending from columnar member 23a that is capable of puncturing
the membrane 21. Fluid 15 can be stored within the reservoir
24.
[0020] Fluid 15 may be for example, but is not limited to being, an
antiseptic or an antimicrobial solution, a biomechanical medium,
and/or a wound treatment material. Examples of antimicrobial agents
include but are not limited to .beta.-Lactam agents, such as
penicillins, and cephalosporins. By way of example only, the fluid
15 may include an antimicrobial hydrogel and may be in the form of
a thixotropic, non-cytotoxic hydrogel. Preferably, the fluid 15
will facilitate healing by decreasing the likelihood of infection
while not inhibiting healing of the surgical site.
[0021] The ligation devices disclosed herein may be made from
natural or synthetic bio-absorbable materials, including but not
limited to, alloys and polymers. Examples of families of
bioabsorbable polymers include polymers having glycolic and ester
linkages, including but not limited to polyesters, poly(amino
acids), polyanhydrides, polyortho-esters, polyurethanes,
polycarbonates, poly(dioxanone) (PDO), polyethylene glycol
(hydrogels, polylactides (PLA), polyglycolides (PGA),
polycaprolactone (PCL), and their copolymers. Some of the polymers,
such as hydrogels, are hydrophilic. Others, such as PCL, are
hydrophobic. The bioabsorbable polymers may be prepared by
copolymerization of various monomers to modify and improve their
properties as applications demand, e.g., poly(lactide-co-glycolide)
copolymers. Because these polymers degrade by hydrolysis, the type
of polymer and its physical form used in a particular application
has an effect in defining the degradation period. Mechanical
blending, as opposed to copolymerization, can also further enhance
their properties.
[0022] Biocompatible, solid-solution strengthened alloys such as
iron-based alloys, cobalt-based alloys and titanium-based alloys as
well as refractory metals and refractory-based alloys may be
utilized in the manufacture of such implantable medical devices.
For example, traditional stainless steel alloys such as 316L, i.e.,
UNS S31603, may be utilized as an implantable, biocompatible device
material. Depending upon the material selected, degradation of the
material may be accelerated after exposing the material to
radiation, including but not limited to gamma radiation.
[0023] Additionally, the ligation device 100 may also be made from
materials impregnated or coated with substances known to have
antimicrobial properties, such as silver or an antimicrobial
medium. For example, oligodynamic metals including silver, copper,
iron, zinc, bismuth, gold, aluminum, and other metals are known to
have antimicrobial properties.
[0024] It will be understood by those skilled in the art that
various modifications and changes in form and detail may be made
therein without departing from the scope and spirit of the present
disclosure. Accordingly, modifications such as those suggested
above, but not limited thereto, are to be considered within the
scope of the disclosure.
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