The present disclosure is directed to ligation clips for sealing body vessels and, more particularly, to polymeric ligation clips that include latching structure and tissue retention features for securely clamping the ligation clip about a body vessel.
Ligation clips are well known in the surgical arts and are commonly used during a variety of surgical procedures to ligate tissue, e.g., a body vessel. Typically, ligation clips include first and second jaws that include clamping surfaces. The jaws are pivotably connected to each other and movable between open and clamped positions. When the ligation clip is clamped about tissue, the tissue is compressed between the clamping surfaces of the first and second jaws. Typically, the jaws of the ligation clip include a latching mechanism to retain the ligation clip in the clamped position about tissue and retention structure positioned on the clamping surfaces of the jaws to prevent the clamped ligation clip from moving in relation to the tissue. Any movement of the clamped ligation clip in relation to the tissue may have a negative impact on the performance of the ligation clip.
Ligation clips can be formed of polymeric materials. In current polymeric clip designs, pre-compressing the ligation clip or closing the ligation clip may deform latching mechanism such that the reliability of the latching mechanism is impaired. The loss of the ability to maintain the ligation clip in the clamped position about a body vessel may result in movement of the ligation clip in relation to the body vessel or disengagement of the ligation clip from the body vessel.
A continuing need exists in the art for a ligation clip with improved latching structure and retention characteristics to more effectively retain the ligation clip in a clamped position about tissue.
One aspect of the disclosure is directed to a ligation clip including a first jaw and a second jaw. The first jaw defines a first clamping surface and supports a stepped longitudinal rib. The stepped longitudinal rib extends along at least a portion of the length of the first clamping surface and includes opposite side walls. Each of the opposite side walls includes an angled wall portion. The second jaw defines a second clamping surface and is pivotably supported in relation to the first jaw to facilitate movement of the ligation clip from an open position to a clamped position. The second jaw has a first row of protrusions supported on one side of the second clamping surface and a second row of protrusions supported on an opposite side of the second clamping surface. Each of the protrusions of the first and second rows of protrusions has an inner side wall that is in opposition to the stepped longitudinal rib when the ligation clip is in the clamped position. The inner side wall of each of the protrusions includes an angled wall portion. The first row of protrusions is laterally spaced from the second row of protrusions to define a channel that extends longitudinally between the first and second rows of protrusions and is positioned to receive the stepped longitudinal rib when the ligation clip is in the clamped position. The angled wall portion of the opposite side walls of the stepped longitudinal rib and the angled side wall portion of the protrusions of the first and second rows of protrusions are positioned to be in opposition to each other in the clamped position of the ligation clip.
In embodiments, the protrusions in the first row of protrusions are longitudinally aligned and spaced from each other and the protrusions in the second row of protrusions are longitudinally aligned and spaced from each other.
In some embodiments, each of the opposite side walls of the stepped longitudinal rib includes a first vertical side wall portion that has a first end contiguous with the first clamping surface and a second end contiguous with the angled wall portion, and each of the protrusions of the first and second rows of protrusions includes a first vertical wall portion having a first end contiguous with the second clamping surface and a second end contiguous with the angled wall portion, wherein the first vertical side wall of the opposite side walls of the stepped longitudinal rib are in opposition to the first vertical wall portions of the protrusions when the ligation clip is in a clamped position.
In certain embodiments, the stepped longitudinal rib includes a second vertical side wall portion that has a first end contiguous with the first clamping surface and a second end contiguous with the angled wall portion, and the inner side wall of each of the protrusions includes a vertical wall portion having a first end contiguous with the second clamping surface and a second end contiguous with the angled wall portion, wherein the second vertical side wall portions of the stepped longitudinal rib are in opposition to the second vertical wall portions of the protrusions when the ligation clip is in a clamped position.
In embodiments, each of the protrusions in the first row of protrusions is longitudinally offset from the each of protrusions in the second row of protrusions such that the protrusions are alternatingly positioned on opposite sides of the second clamping surface along the length of the second clamping surface.
In some embodiments, the first jaw includes a first locking element and the second jaw includes a second locking element, wherein the first locking element is movable into engagement with the second locking element to retain the ligation clip in the clamped position.
In certain embodiments, the first or second locking element includes a head including a first side wall defining a first notch, and the other of the first or second locking element includes a box-like structure defining a through bore having a first locking tab extending into the through bore, wherein the first locking tab is positioned to be received within the first notch of the head to retain the ligation clip in the clamped position.
In embodiments, the head includes a second side wall defining a second notch and the box-like structure includes a second locking tab that extends into the through bore, wherein the second locking tab is positioned to be received within the second notch of the head to retain the ligation clip in the clamped position.
In some embodiments, the first notch and the first locking tab have triangular configurations.
In certain embodiments, the box-like structure is rectangular in shape and is defined by angled side walls and a radiused proximal wall that are configured to guide the head into the through bore of the box-like structure.
In embodiments, the head has a rectangular cross-sectional shape and the through bore is configured to receive the head.
In some embodiments, the box-like structure has an open distal end.
In certain embodiments, the first or second locking element includes a head supporting a stop member that extends outwardly of the head, and the other of the first or second locking element includes a box-like structure that defines a through bore. The stop member is deformable to facilitate passage of the stop member through the through bore during movement of the ligation clip from the open position to the closed position. The stop member is configured in an undeformed state to engage the box-like structure to obstruct movement of the ligation clip from the clamped position to the open position.
In embodiments, the head includes a hooked portion and the other one of the first and second locking elements includes an engagement portion, wherein the hooked portion is positioned to engage the engagement portion to retain the ligation clip in the clamped position.
Another aspect of the present disclosure is directed to a ligation clip that includes a first jaw and a second jaw. The first jaw defines a first clamping surface and includes a first locking element and the second jaw defines a second clamping surface and includes a second locking element. The second jaw is pivotably supported in relation to the first jaw to facilitate movement of the ligation clip from an open position to a clamped position. The first locking element includes a head having a first side wall defining a first notch and the second locking element includes a box-like structure defining a through bore having a first locking tab extending into the through bore. The first locking tab is positioned to be received within the first notch of the head to retain the ligation clip in the clamped position.
In embodiments, the head includes a second side wall defining a second notch and the box-like structure includes a second locking tab that extends into the through bore. The second locking tab is positioned to be received within the second notch of the head to retain the ligation clip in the clamped position.
Yet another aspect of the present disclosure is directed to a ligation clip that includes a first jaw and a second jaw. The first jaw defines a first clamping surface and includes a first locking element, and the second jaw defines a second clamping surface and includes a second locking element. The second jaw is pivotably supported in relation to the first jaw to facilitate movement of the ligation clip from an open position to a clamped position. The first locking element includes a head supporting a stop member that extends outwardly of the head. The second locking element includes a box-like structure that defines a through bore. The stop member is deformable to facilitate passage of the stop member through the through bore during movement of the ligation clip from the open position to the clamped position. The stop member is configured in an undeformed state to engage the box-like structure to obstruct movement of the ligation clip from the clamped position to the open position.
Various exemplary embodiments of the presently disclosed ligation clip are described herein below with reference to the drawings, wherein:
The presently disclosed ligation clip will now be described in detail with reference to the drawings in which like reference numerals designate identical or corresponding elements in each of the several views. It is to be understood that the disclosed embodiments are merely exemplary of the disclosure and may be embodied in various forms. Well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail. Specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
In this description, the term “proximal” is used generally to refer to that portion of the device that is closer to a clinician, while the term “distal” is used generally to refer to that portion of the device that is farther from the clinician. In addition, the term “clinician” is used generally to refer to medical personnel including doctors, nurses, and support personnel.
Referring to
The first jaw 12 includes a proximal portion 18, a distal portion 20, and a clamping surface 22. The second jaw 14 includes a proximal portion 24, a distal portion 26, and a clamping surface 28. The proximal portions 18, 24 of the first and second jaws 12, 14, respectively, are coupled to the hinge portion 16.
The distal portion 20 of first jaw 12 includes a first locking element 30 and spaced bosses 33. The first locking element 30 forms a first part of a latching mechanism 29 (
The distal portion 26 of the second jaw 14 includes a second locking element 40 and spaced bosses 42. The second locking element 40 forms a second part of the latching mechanism 29 (
The first clamping surface 22 is substantially flat and supports a stepped longitudinal rib 60 (
The second clamping surface 28 is substantially flat and supports a first row of protrusions 70a and a second row of protrusions 70b. Each of the protrusions 70a of the first row of protrusions 70a is spaced from but longitudinally aligned with each of the other protrusions 70a along a first side of the second clamping surface 28. Similarly, each of the protrusions 70b of the second row of protrusions 70b is longitudinally aligned with each of the other protrusions 70b along a second side of the second clamping surface 28. The protrusions 70a, 70b may have a width that is less than half the width of the clamping surface 28 to define an unobstructed central channel 71 between the first and second rows of protrusions 70a, 70b on the second clamping surface 28. The central channel 71 is dimensioned to receive the stepped longitudinal rib 60 when the ligation clip 10 is in the clamped position. In embodiments, each of the protrusions 70a on the first side of the clamping surface 28 are longitudinally offset from the each of protrusions 70b positioned on the other side of the clamping surface 28 such that the protrusions 70a and 70b are alternatingly positioned on opposite sides of the clamping surface 28 along the length of the clamping surface 28.
Referring to
The inner side wall 73 of each of the protrusions 70a, 70b of the first and second rows of protrusions 70a, 70b has a first substantially vertical wall portion 74 that is contiguous with the tissue engaging surface 72 and an angled wall portion 76 that extends from the vertical wall portion 74 towards the clamping surface 28 of the second jaw 14. In some embodiments, the inner side wall 73 of the protrusions 70a, 70b also include a second substantially vertical wall portion 80 that extends between the angled wall portion 76 and the clamping surface 28. The vertical portions 74 of the protrusions 70a, 70b are positioned to align with vertical side wall portions 62 of the stepped longitudinal rib 60 when the ligation clip 10 is in the clamped position and the angled wall portion 76 of the protrusions 70a, 70b are positioned to align with the angled wall portion 64 of the longitudinal rib 60 of the first jaw 12 when the ligation clip 10 is in the clamped position. In addition, the vertical wall portions 80 of the protrusions 70a, 70b are positioned to align with the side wall portions 66 of the stepped longitudinal rib 60 of the first jaw 12 when the ligation clip 10 is in the clamped position.
Referring to
In embodiments, the surgical ligation clip 10 may be made, in whole or in part, of a resilient bioabsorbable and/or biocompatible polymeric material. Examples of suitable bioabsorbable and/or biocompatible polymers include acetal polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyoxymethylene, polyetheretherketone (PEEK), polypropylene, and polyethylene or other thermoplastic materials having similar properties that can be injection-molded. The clip may also be made of a polymer material or materials in combination with radiolucent metal alloys. Alternately, other materials may be used to form the clip 10 including biocompatible metals, plastics and composites.
Referring to
Referring to
The above described ligation clip 10 including a first jaw 12 having a stepped longitudinal rib 60 and a second jaw 14 including first and second rows of protrusions 70a, 70b that are in opposition to the longitudinal rib in the clamped position of the ligation clip 10 improve the retention forces of the ligation clip 10 on the tissue “T”. In addition, the latching mechanism 29 including the notched head 32 on the first jaw 12 and the locking tab 48 on the second jaw 14 securely fastens the ligation clip 10 onto tissue “T”. The combination of the retention structure and latching structure on the first and second jaws 12, 14 minimizes the likelihood that the ligation clip 10 will slide in a direction parallel to the clamping surfaces 22, 28 of the first and second jaws 12, 14, respectively, after the ligation clip 10 has been clamped about the tissue “T”.
The ligation clip 100 differs from the ligation clip 10 (
The second jaw 114 includes a second locking element 140 that forms a second part of the latching mechanism 129 (
The ligation clip 200 differs from the ligation clip 10 (
The second locking element 240 includes a box-like structure 246 that defines a through bore 246a, a cam surface 247, and an engagement portion 248 (
Persons skilled in the art will understand that the devices and methods specifically described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments. It is envisioned that the elements and features illustrated or described in connection with one exemplary embodiment may be combined with the elements and features of another without departing from the scope of the present disclosure. As well, one skilled in the art will appreciate further features and advantages of the disclosure based on the above-described embodiments. Accordingly, the disclosure is not to be limited by what has been particularly shown and described, except as indicated by the appended claims.
This application claims the benefit of and priority to U.S. Provisional Patent Application No. 62/655,882 filed Apr. 11, 2018, the entire disclosure of which is incorporated by reference herein.
Number | Name | Date | Kind |
---|---|---|---|
2668538 | Baker | Feb 1954 | A |
3439523 | Wood | Apr 1969 | A |
3713533 | Reimels | Jan 1973 | A |
4076120 | Carroll et al. | Feb 1978 | A |
4146130 | Samuels et al. | Mar 1979 | A |
4187712 | Samuels et al. | Feb 1980 | A |
4212303 | Nolan | Jul 1980 | A |
4212390 | Raczkowski et al. | Jul 1980 | A |
4294355 | Jewusiak et al. | Oct 1981 | A |
4344531 | Giersch | Aug 1982 | A |
4346869 | MacNeill | Aug 1982 | A |
4361229 | Mericle | Nov 1982 | A |
4390019 | Leveen et al. | Jun 1983 | A |
4412617 | Cerwin | Nov 1983 | A |
4418694 | Beroff et al. | Dec 1983 | A |
4449531 | Cerwin et al. | May 1984 | A |
4485953 | Rothfuss | Dec 1984 | A |
4487205 | Di Giovanni et al. | Dec 1984 | A |
4550729 | Cerwin et al. | Nov 1985 | A |
4696396 | Samuels | Sep 1987 | A |
4726372 | Perlin | Feb 1988 | A |
4834096 | Oh et al. | May 1989 | A |
4936447 | Peiffer | Jun 1990 | A |
4961499 | Kulp | Oct 1990 | A |
4971198 | Mericle | Nov 1990 | A |
4972949 | Peiffer | Nov 1990 | A |
5046611 | Oh | Sep 1991 | A |
5046624 | Murphy et al. | Sep 1991 | A |
5050272 | Robinson et al. | Sep 1991 | A |
5062846 | Oh et al. | Nov 1991 | A |
5100416 | Oh et al. | Mar 1992 | A |
5201416 | Taylor | Apr 1993 | A |
5279416 | Malec et al. | Jan 1994 | A |
5423831 | Nates | Jun 1995 | A |
5564262 | Bevis et al. | Oct 1996 | A |
5634930 | Thornton et al. | Jun 1997 | A |
5676676 | Porter | Oct 1997 | A |
5697942 | Palti | Dec 1997 | A |
5713912 | Porter | Feb 1998 | A |
5908430 | Appleby | Jun 1999 | A |
5921991 | Whitehead et al. | Jul 1999 | A |
6044971 | Esposito et al. | Apr 2000 | A |
6158583 | Forster | Dec 2000 | A |
6217590 | Levinson | Apr 2001 | B1 |
6228097 | Levinson et al. | May 2001 | B1 |
6273253 | Forster et al. | Aug 2001 | B1 |
6306150 | Levinson | Oct 2001 | B1 |
6391035 | Appleby et al. | May 2002 | B1 |
6419682 | Appleby et al. | Jul 2002 | B1 |
6421920 | Jensen | Jul 2002 | B1 |
6460700 | Weisshaupt | Oct 2002 | B2 |
6460749 | Levinson et al. | Oct 2002 | B1 |
6780195 | Porat | Aug 2004 | B2 |
6824547 | Wilson, Jr. et al. | Nov 2004 | B2 |
6863675 | Wilson, Jr. | Mar 2005 | B2 |
6880699 | Gallagher | Apr 2005 | B2 |
7001412 | Gallagher et al. | Feb 2006 | B2 |
7052504 | Hughett | May 2006 | B2 |
7131977 | Fowler | Nov 2006 | B2 |
7144402 | Kuester, III | Dec 2006 | B2 |
7211091 | Fowler et al. | May 2007 | B2 |
7211092 | Hughett | May 2007 | B2 |
7316696 | Wilson, Jr. et al. | Jan 2008 | B2 |
7326223 | Wilson, Jr. | Feb 2008 | B2 |
7452368 | Liberatore et al. | Nov 2008 | B2 |
7585304 | Hughett | Sep 2009 | B2 |
7628272 | Wiedenbein | Dec 2009 | B2 |
7857129 | Iaconi-Forrer et al. | Dec 2010 | B2 |
8042687 | Cannady | Oct 2011 | B2 |
8312992 | Disch | Nov 2012 | B2 |
8403138 | Weisshaupt et al. | Mar 2013 | B2 |
8425515 | Gamache et al. | Apr 2013 | B2 |
8627955 | Weisshaupt et al. | Jan 2014 | B2 |
8839954 | Disch | Sep 2014 | B2 |
8888398 | Werth | Nov 2014 | B2 |
9220507 | Patel | Dec 2015 | B1 |
9271737 | Castro et al. | Mar 2016 | B2 |
9282972 | Patel et al. | Mar 2016 | B1 |
9445820 | Whiting | Sep 2016 | B2 |
9456824 | Willett et al. | Oct 2016 | B2 |
9480480 | Santini et al. | Nov 2016 | B2 |
9486225 | Michler et al. | Nov 2016 | B2 |
9517178 | Chancibot | Dec 2016 | B2 |
D808522 | Cannady et al. | Jan 2018 | S |
9855053 | Bagaoisan et al. | Jan 2018 | B2 |
10130373 | Castro et al. | Nov 2018 | B2 |
10136898 | Schmidt et al. | Nov 2018 | B2 |
20020046961 | Levinson et al. | Apr 2002 | A1 |
20020177863 | Mandel et al. | Nov 2002 | A1 |
20040199178 | Small | Oct 2004 | A1 |
20050165423 | Gallagher et al. | Jul 2005 | A1 |
20050165424 | Gallagher et al. | Jul 2005 | A1 |
20060089659 | Small | Apr 2006 | A1 |
20060124485 | Kennedy | Jun 2006 | A1 |
20060217749 | Wilson et al. | Sep 2006 | A1 |
20070083218 | Morris | Apr 2007 | A1 |
20070118161 | Kennedy et al. | May 2007 | A1 |
20070149988 | Michler et al. | Jun 2007 | A1 |
20070149989 | Santilli et al. | Jun 2007 | A1 |
20090088783 | Kennedy et al. | Apr 2009 | A1 |
20090171380 | Whiting | Jul 2009 | A1 |
20110224700 | Schmidt et al. | Sep 2011 | A1 |
20110295291 | Trivisani | Dec 2011 | A1 |
20120083803 | Patel et al. | Apr 2012 | A1 |
20120226291 | Malizia et al. | Sep 2012 | A1 |
20130245651 | Schmidt et al. | Sep 2013 | A1 |
20130253540 | Castro | Sep 2013 | A1 |
20130261642 | Willett et al. | Oct 2013 | A1 |
20140054192 | Chancibot | Feb 2014 | A1 |
20140243862 | Bagaoisan et al. | Aug 2014 | A1 |
20140276970 | Messerly et al. | Sep 2014 | A1 |
20160151073 | Castro et al. | Jun 2016 | A1 |
20160354089 | Whiting | Dec 2016 | A1 |
20170020530 | Willett et al. | Jan 2017 | A1 |
20170027576 | Castro | Feb 2017 | A1 |
20170238935 | Shi | Aug 2017 | A1 |
20170252042 | Kethman et al. | Sep 2017 | A1 |
20180036008 | Ramsey et al. | Feb 2018 | A1 |
20180168659 | Bagaoisan et al. | Jun 2018 | A1 |
20180185029 | Lebens, III | Jul 2018 | A1 |
20180228492 | Aranyi et al. | Aug 2018 | A1 |
20180271527 | Shellenberger | Sep 2018 | A1 |
20180271532 | Shellenberger | Sep 2018 | A1 |
20180271535 | Shellenberger et al. | Sep 2018 | A1 |
20180271536 | Shellenberger et al. | Sep 2018 | A1 |
Number | Date | Country |
---|---|---|
654195 | Feb 1965 | BE |
204839635 | Dec 2015 | CN |
106264647 | Jan 2017 | CN |
10116168 | Nov 2001 | DE |
2353710 | Mar 2001 | GB |
Entry |
---|
European Search Report dated Jul. 17, 2019, issued in European Appln. No. 19168518. |
Number | Date | Country | |
---|---|---|---|
20190314026 A1 | Oct 2019 | US |
Number | Date | Country | |
---|---|---|---|
62655882 | Apr 2018 | US |