Multi-piece ligating clip applier

Abstract

Disclosed herein are polymer ligature clip pincers and applier for applying polymer ligature clip pincers to tissue. More particularly, the polymer ligature clip pincers include first and second beams that are spaced apart, which can be coupled to one another and movable from an open position of reduced diameter that exerts minimal strain on the ligature clip pincers to a clamped position and to an applier for delivering such ligature clip pincers to a surgical site.

Description

Technical Field

[0001] This disclosure relates to a multi-piece ligation clamp. Background Technology

[0002] Polymer ligation clips typically include a first beam and a second beam, which are connected at one end by a pivotal connection (e.g., a movable hinge) such that the first and second beams can move relative to each other between an open position and a clamped position. Ligation clips can be applied to tissue via a small-diameter incision or through a small-diameter cannula positioned through the incision via an endoscope to minimize trauma to the patient during the surgical procedure.

[0003] Typically, when polymer clamps are applied to tissue through a cannula and / or stored within an endoscopic clamp applicator, the clamps are supported in a compressed or partially compressed state to minimize the overall size of the clamp and facilitate delivery through the cannula or incision. Storing polymer clamps in a compressed or partially compressed state can affect the clamp's condition, which may affect its performance. More specifically, storing polymer clamps in a compressed or partially compressed state can lead to strain and / or creep of the polymer clamp material, particularly in the area of ​​the moving hinge, which may adversely affect the condition and / or performance of the polymer clamp. Summary of the Invention

[0004] In one aspect of this disclosure, the ligation clamp includes a first beam and a second beam. The first beam has a first end, a second end, and a clamping surface located between the first end and the second end. The first end includes a first engaging feature, and the second end includes a first locking structure.

[0005] The second beam has a first end, a second end, and a second clamping surface located between the first end and the second end. The first end of the second beam includes a second mating feature, and the second end of the second beam includes a second locking structure. The second mating feature is adapted to engage with the first mating feature to connect the first beam to the second beam. The first beam is movable relative to the second beam to move the ligation clamp from an open position to a clamped position, wherein the first locking structure is adapted to engage the second locking structure to secure the ligation clamp in the clamped position.

[0006] In various aspects of this disclosure, the first mating feature includes a hook defining a semi-cylindrical recess, and the second mating feature includes a transverse post received within the semi-cylindrical recess to pivotally connect the first beam to the second beam.

[0007] In some aspects of this disclosure, the first end of the second beam defines a first through hole for receiving the hook portion.

[0008] In some respects, the transverse column defines one end of the through hole.

[0009] In aspects of the present disclosure, the second beam includes side walls, and the first end of the second beam defines a second through hole extending between the side walls of the second beam, wherein the second through hole forms a flexible portion positioned to engage the first beam when the ligature clamp is moved from the open position toward the clamped position to urge the ligature clamp toward the open position.

[0010] In some aspects of the present disclosure, the first mating feature includes a first body supporting a protrusion, and the second mating feature includes a second body defining a first through hole sized to receive the protrusion to couple the first beam to the second beam.

[0011] In certain aspects of the present disclosure, the first body of the first mating feature defines a first planar surface contiguous with the first clamping surface of the first beam, and the second body of the second mating feature defines a second planar surface contiguous with the second clamping surface of the second beam, wherein the first planar surface is in a side-by-side abutting relationship with the second planar surface when the first mating feature and the second mating feature are coupled together.

[0012] In aspects of the present disclosure, the first planar surface and the second planar surface of the first mating feature and the second mating feature are oriented such that the ligature clamp is in the open position in an undeformed state when the first mating feature and the second mating feature are coupled together.

[0013] In some aspects of the present disclosure, the protrusion is arrowhead-shaped and includes a retention head having a retention surface positioned to engage the second body of the second mating feature to resist removal of the protrusion from the first through hole.

[0014] In certain aspects of the present disclosure, the first mating feature and the first locking structure each include a hook-shaped latch, and the second mating feature and the second locking structure each include a latch receiver, wherein the hook-shaped latch is movable into engagement with the respective latch receiver to secure the ligature clamp in the clamped position.

[0015] In aspects of the present disclosure, the first beam includes a first boss positioned on each side of the second end of the first beam, and the second beam includes a second boss positioned on each side of the second end of the second beam.

[0016] In some aspects of the present disclosure, the first mating feature is adapted to be releasably coupled to the first mating structure.

[0017] In another aspect of the disclosure, the ligating clip includes a first beam and a second beam. The first beam has a first mating feature and defines a first clamping surface, and the second beam has a second mating feature and defines a second clamping surface. The second mating feature is coupled to the second mating feature to pivotably couple the first beam to the second beam such that the ligating clip is movable from an open position to a clamped position. In the open position, the first beam is longitudinally aligned with the second beam, and the first clamping surface and the second clamping surface face in a common direction.

[0018] In aspects of the disclosure, the first beam and the second beam of the ligating clip are formed of a polymeric material.

[0019] In some aspects of the disclosure, the first mating feature and the second mating feature are configured to induce minimal strain on the first beam and the second beam when the ligating clip is in the first position.

[0020] In certain aspects of the disclosure, each beam includes a boss adapted to support the ligating clip within a clip applier.

[0021] Another aspect of the disclosure relates to a method of applying a ligating clip to tissue, the method including: supporting a first beam of the ligating clip having a first clamping surface on a first jaw of a tool assembly of a clip applier; supporting a second beam of the ligating clip having a second clamping surface on a second jaw of the tool assembly of the clip applier in a position longitudinally aligned with the first beam; positioning the tool assembly of the clip applier adjacent to the tissue to be clamped; and moving the second jaw of the tool assembly relative to the first jaw of the tool assembly to move the second beam of the ligating clip into side-by-side alignment with the first beam of the ligating clip to move the ligating clip to a clamped position around the tissue.

[0022] In aspects of the disclosure, the method further includes: advancing the tool assembly from a position within an elongate shaft of the clip applier to a position external to the elongate shaft.

[0023] In some aspects of the disclosure, the first mating feature and the second mating feature are pivotably coupled to one another when the first beam and the second beam of the ligating clip are supported within the elongate shaft of the clip applier.

[0024] In certain aspects of the disclosure, the method further includes: moving an actuation lever of the clip applier from an advanced position to a retracted position to pivot the second jaw of the tool assembly relative to the first jaw of the tool assembly.

[0025] Another aspect of the disclosure relates to a clip applier including an elongate shaft and a tool assembly. The elongate shaft has a proximal end and a distal end. The tool assembly is supported at the distal end of the elongate shaft and includes a first jaw, a second jaw, and an actuator. The first jaw is pivotably coupled to the second jaw such that the tool assembly is movable between an open position and a clamped position. In the open position, the first jaw is longitudinally aligned with the second jaw.

[0026] In some aspects of the present disclosure, the first jaw is movable between an open position and a clamped position over an arc of about 180 degrees.

[0027] In certain aspects of the present disclosure, an actuator is coupled to the first jaw and is movable within the elongate shaft to move the tool assembly between the open position and the clamped position.

[0028] In aspects of the present disclosure, each of the first jaw and the second jaw includes a concave cavity for receiving a boss of a ligation clip.

[0029] Other features of the present disclosure will be appreciated from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various aspects of the disclosed multi-piece ligation clip applier are described herein below with reference to the drawings, in which:

[0031] Figure 1 is a side perspective view from a distal end of an exemplary embodiment of the disclosed multi-piece ligation clip applier with the jaws of the clip applier coupled to one another and in an open position;

[0032] Figure 2 is a side perspective view from a distal end of an exemplary embodiment of the disclosed multi-piece ligation clip applier with the jaws of the clip applier coupled to one another and in an open position; Figure 1 is a side perspective view from a proximal end of the multi-piece ligation clip applier shown in FIG. 1, with the jaws of the clip applier coupled to one another and in a partially open position;

[0033] Figure 3 is a side perspective view from a proximal end of the multi-piece ligation clip applier shown in FIG. 1, with the jaws of the clip applier coupled to one another and in a partially open position; Figure 1 is a side perspective view of the multi-piece ligation clip applier shown in FIG. 1, with the jaws of the clip applier uncoupled from one another;

[0034] Figure 4 is a side perspective view of the multi-piece ligation clip applier shown in FIG. 1, with the jaws of the clip applier coupled to one another and in an open position, and the clip applier supported between the jaws of a clip applier dispenser; Figure 1

[0035] is a cross-sectional view taken along section line 5-5 of FIG. 1; Figure 5 Figure 4 is a side perspective view of the multi-piece ligation clip applier and clip applier dispenser shown in FIG. 1, with the jaws of the clip applier moving toward a clamped position;

[0036] Figure 6 Figure 4 is a side perspective view of the multi-piece ligation clip applier shown in FIG. 1, with the jaws of the clip applier coupled to one another and in an open position, and the clip applier supported between the jaws of a clip applier dispenser;

[0037] Figure 7 is a side perspective view of the multi-piece ligation clip applier shown in FIG. 1 in a clamped position; Figure 6

[0038] Figure 8 ​​​This is a side perspective view from the distal end of another exemplary embodiment of the disclosed multi-piece ligation clamp, wherein the jaws of the clamp are connected to each other and are in the open position.

[0039] Figure 9 From Figure 8 The image shows a proximal side perspective view of a multi-piece ligation clamp, with the jaws of the clamps connected to each other and in the open position.

[0040] Figure 10 yes Figure 9 The side perspective view of the multi-piece ligation clamp shown, in which the jaws are disconnected from each other;

[0041] Figure 11 It is along Figure 9 The sectional view taken by section line 11-11;

[0042] Figure 12 yes Figure 9 The cross-sectional view shown is of a multi-piece ligation clamp, which is supported between the jaws of the clamp applicator when in the open position.

[0043] Figure 13 yes Figure 12 The cross-sectional view shown is of a multi-piece ligation clamp supported between the jaws of a clamp applicator, with the jaws moving toward the clamping position.

[0044] Figure 14 yes Figure 13 The cross-sectional view shown is of the multi-piece ligation clamp in the clamping position.

[0045] Figure 15 This is a side perspective view from the distal end of another exemplary embodiment of the disclosed multi-piece ligation clamp, wherein the jaws of the clamp are disconnected from each other.

[0046] Figure 16 From Figure 15 The image shows a distal side perspective view of a multi-piece ligation clamp, with the jaws of the clamps connected to each other and the clamps in a clamping position.

[0047] Figure 17 It is along Figure 15 The sectional view taken by section line 17-17;

[0048] Figure 18 It is along Figure 16 A sectional view taken from section line 18-18;

[0049] Figure 19 This is a side perspective view of an exemplary embodiment of an applicator for applying ligation clips to tissues;

[0050] Figure 20 yes Figure 19a side perspective view of the distal end of the clip applier shown with the tool assembly in the advanced, open position; Figure 1 the parts of the multi-piece clip applier shown are separated;

[0051] Figure 21 is a cross-sectional view taken along section line 21-21 of Figure 19

[0052] Figure 22 is a side perspective view of the distal end of the clip applier shown with the tool assembly in the advanced, open position; Figure 19

[0053] Figure 23 is a cross-sectional view taken along section line 23-23 of Figure 22

[0054] Figure 24 is a side perspective view of the distal end of the clip applier shown with the tool assembly in the advanced, open position; Figure 19

[0055] Figure 25 is a cross-sectional view taken along section line 25-25 of Figure 24 DETAILED DESCRIPTION

[0056] The disclosed clip applier and clip applier instrument will now be described in detail with reference to the Figures, in which like reference numerals are used to refer to like elements throughout the several views. However, it is to be understood that the disclosed aspects of the disclosed clip applier are merely exemplary of the disclosure and can be embodied in various forms. In order not to obscure the disclosure with details that will be readily apparent from the descriptions of the embodiments, the description will not delved into great detail with respect to the well-known functions or constructions. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to employ the present disclosure in virtually any appropriately detailed structure. Further, directional terms such as front, back, up, down, top, bottom, distal, proximal, and the like are used with reference to the orientation of the Figures and are not intended to be limiting of the disclosure.

[0057] In this specification, the term "proximal" is used to refer to the portion of the device closer to the clinician, while the term "distal" is used to refer to the portion of the device further from the clinician. In addition, the term "endoscope" is used to refer to endoscopes, laparoscopes, arthroscopes, and / or any other procedure performed through a small diameter incision or trocar. Furthermore, the term "clinician" is used to refer to medical personnel, including doctors, nurses, and support staff. Finally, the term "substantially" or "about" is used to refer to 90% to 110% of a reference parameter.

[0058] ​​​​​The disclosed ligating clip applier includes a first beam having a first end including a first mating feature and a second beam having a first end including a second mating feature. The first and second mating features of the first and second beams can be selectively coupled together to facilitate pivotal movement of the ligating clip applier between an open position and a clamped position. In aspects of the disclosed ligating clip applier, the first and second mating features are configured to allow the first and second beams to open to a position in which the first and second beams are substantially longitudinally aligned to minimize the outer dimensions of the clip applier in the open position. In aspects of the disclosed ligating clip applier, the first and second mating features are configured to minimize strain on the first and second beams when the clip applier is in the open position to minimize strain and material creep on the polymer clip during storage and delivery through small diameter cannulas.

[0059] Exemplary embodiments of the disclosed polymer ligating clip are generally shown in Figures 1 to 3 FIG. 1 as a ligating clip 10. The ligating clip 10 includes a first beam 12 and a second beam 14. The first beam 12 has a first end 12a including a first mating feature 16 and a second end 12b including a first locking element 18 and a first boss 20. The first boss 20 extends away from opposite sides of the first beam 12. In aspects of the disclosed ligating clip, the first boss 20 can be formed from a single cross-member positioned on and extending across the first beam 12. Alternatively, other beam configurations are contemplated. The first beam 12 has a first clamping surface 22 that faces the second beam 14 when the ligating clip 10 is moved to a clamped position.

[0060] The second beam 14 has a first end 14a including a second mating feature 24 and a second end 14b including a second locking element 26 and spaced apart second bosses 28. The second beam 14 has a second clamping surface 32 that is aligned in parallel with the first clamping surface 22 when the clip 10 is in the clamped position Figure 7 Although not depicted herein, the first and second clamping surfaces 22, 32 can include tissue retention features such as protrusions and / or notches to minimize slippage of the ligating clip 10 along the tissue when the ligating clip 10 is clamped around the tissue. In the open position Figure 1 , the first and second beams 12, 14 are longitudinally aligned and the clamping surfaces 22, 32 of the first and second beams 12, 14, respectively, face substantially the same direction. In this position, no strain is placed on the first and second mating features 16, 24 of the first and second beams 12, 14, respectively.

[0061] In aspects of the disclosed ligature clip, the first locking element 18 of the first beam 12 includes a latch 40 and the second locking element 26 of the second beam 14 includes a latch receiver 42 positioned to receive and engage the latch 40 to retain the ligature clip 10 in the clamped position Figure 7 ). In aspects of the disclosed ligature clip, the latch 40 can be hook-shaped and the latch receiver 42 can define a channel 42a between the second bosses 28 that guides or directs the latch 40 into engagement with the latch receiver 42. Alternatively, the first and second locking elements 18, 26 can employ a variety of different configurations to retain the ligature clip 10 in the clamped position Figure 7

[0062] Figure 3 The ligature clip 10 is illustrated with the first beam 12 separated from the second beam 14. As shown, the first engagement feature 16 of the first beam 12 of the ligature clip 10 is configured to couple with the second engagement feature 24 of the second beam 14 of the ligature clip 10 to facilitate pivotal movement of the first beam 12 relative to the second beam 14 between an open position Figure 1 ) and a clamped position Figure 7 ). In aspects of the disclosed ligature clip, the first engagement feature 16 of the first beam 12 includes a hook 44 defining a semi-cylindrical recess 46 and the second engagement feature 24 includes a transverse post 48 that can be received within the semi-cylindrical recess 46 to couple the first beam 12 to the second beam 14. In aspects of the disclosed ligature clip, the transverse post 48 Figure 5 ) is substantially cylindrical.

[0063] In aspects of the disclosed ligature clip, the first end 14a of the second beam 14 defines a first through-hole 50 that extends through an upper surface of the beam 14 that is connected to the second clamping surface 32 and receives the hook 44 of the first beam 12. The transverse post 48 defines one end of the first through-hole 50 and is received within the semi-cylindrical recess 46 of the hook 44 of the first engagement feature 16 when the hook 44 is inserted through the first through-hole 50 of the second beam 14 to pivotably secure the first beam 12 to the second beam 14. The configuration of the first and second engagement features 16, 24 allows the ligature clip 10 to be positioned in an open position with the first beam 12 substantially aligned with the second beam 14 without placing any strain on the first and second engagement features 16, 24 of the first and second beams 12, 14 to minimize strain and material creep within the ligature clip 10.

[0064] ​In all aspects of the disclosed ligation clamp, the second beam 14 of the ligation clamp 10 further defines a second through hole 52 extending between the sidewalls of the second beam 14. The second through hole 52 allows a portion of the first end 14a of the second beam 14 to flex inward when the ligation clamp 10 moves to the clamping position, thereby facilitating the closure of the ligation clamp 10. In all aspects of the disclosed ligation clamp, the second through hole 52 may have a rhomboid shape to form a flexible portion 54 on the first end 14a of the second beam 14. Figure 5 Alternatively, other configurations are envisioned for the second through-hole 52, such as oval, circular, etc.

[0065] Figures 4 to 7 The illustration shows the ligation clamp 10 in the partially opened position ( Figure 4 Move to the clamping position. Figure 7 When applying the ligation clamp 10 to tissue, the ligation clamp 10 is supported in the conventional clamp applicator 100. It should be noted that, according to exemplary embodiments of this disclosure, the following is a detailed description... Figures 19 to 25 The image shows a ligation clamp 10 supported on an applicator 500 in the fully open position. The applicator 100 includes a first jaw 102 and a second jaw 104 secured to the first jaw 102 by a pivot 106. The pivot 106 facilitates the first jaw 102 in the open position relative to the second jaw 104. Figure 4 Pivoting movement between the closed and open positions. Jaws 102 and 104 include semi-circular recesses 108a and 108b that respectively receive a first boss 20 and a second boss 28 of the first beam 12 and the second beam 14 to support the ligation clamp 10 between jaws 102 and 104. Receiving the bosses 20 and 28 in the recesses 108a and 108b secures the ligation clamp 10 between jaws 102 and 104.

[0066] Figure 4 and Figure 5 The illustration shows a ligation clamp 10 supported in the open position between the first jaw 102 and the second jaw 104 of the clamp applicator 100. In this position, a boss 20 is received within a recess 108a in the jaw 102 of the clamp applicator 100, and a boss 28 is received within a recess 108b in the jaw 104 of the clamp applicator 100. A first clamping surface 22 on the second end 12b of the first beam 12 is spaced apart from a second clamping surface 32 on the second end 14b of the second beam 14, such that a first locking element 18 is spaced apart from a second locking element 26. In this position, the second ends 12b and 14b of the first beam 12 and the second beam 14 define a spacer for receiving tissue “T” ( Figure 7 The mouth 56 of the second beam 14 and the flexible portion 54 of the first end 14a of the second beam 14. Figure 5 The beams are not compressed, so that minimal strain is applied to the first beam 12 and the second beam 14.

[0067] Figure 6 and Figure 7 The illustration depicts the ligation clamp 10 and the applicator 100 when the jaws 102 and 104 of the applicator 100 approach each other to move the ligation clamp 10 from the open position toward the clamped position. As shown, when the first beam 12 approaches the second beam 14, the first clamping surface 22 of the first beam engages the flexible portion 54 of the second beam 14, causing the flexible portion 54 to flex downwards to reduce the size of the through hole 52 in the side wall of the second beam 14. When the ligation clamp 10 approaches the clamped position ( Figure 7 When the first locking element 18 moves through the channel 42a defined in the latch receiver 42, the contact between the first locking element 18 and the second locking element 26 causes the first locking element 18 to be engaged by the latch receiver 42. Figure 6 The arrow "A" in the diagram indicates an outward bias to allow the first locking element 18 to be biased outward in the direction indicated by the arrow "A" in the diagram. Figure 7 The arrow "B" indicates the direction and engages with the locking receiver 42. In this position, the organization "T" ( Figure 7 The first beam 12 and the second beam 14 are clamped between their respective first clamping surfaces 22 and 32. A flexible portion 54 on the first end 14a of the second beam 14 remains compressed, advancing the first beam 12 and the second beam 14 to the open position. This force helps to keep the first locking element 18 and the second locking element 26 engaged with each other to hold the ligation clamp 10 in the clamped position.

[0068] Figures 8 to 14 Another exemplary embodiment of the disclosed ligation clip is illustrated, which is generally shown as 200. The ligation clip 200 is substantially similar to the ligation clip 10, except for the configuration of the first mating feature 216 on the first beam 212 and the configuration of the second mating feature 224 on the second beam 214. Therefore, for the sake of brevity, only the first mating feature 216 and the second mating feature 224 are described in detail herein.

[0069] Figures 8 to 11 The illustration shows a ligation clamp 200 in the open position, wherein the second end of the first beam 212 is spaced apart from the second end 214a of the second beam 214 to define an opening 256 for receiving tissue “T”. Figure 14 As mentioned above regarding ligation clamps 10 ( Figure 1) as described, the first beam 212 includes a first clamping surface 222 and the second beam 214 includes a second clamping surface 232. The first mating feature 216 is formed on the first end 212a of the first beam 212 and includes a body 260 defining a planar surface 262 that is continuous with the first clamping surface 222. The body 260 has a width "W1" that is substantially less than the width of the first beam 212 to define a living hinge 264 that facilitates pivotal movement of the first clamping surface 222 relative to the body 260. The body 260 includes a protrusion 266 that extends downward from the planar surface 262 toward the second beam 214. The protrusion 266 is arrowhead-shaped and includes a retention head 268 having a retention surface 268a. Figure 14

[0070] The second mating feature 224 is formed on the first end 214a of the second beam 214 and includes a body 270 defining a planar surface 272 that is continuous with the second clamping surface 232. The body 270 has a width "W2" that is substantially less than the width of the second beam 214 to define a living hinge 274 that facilitates pivotal movement of the second clamping surface 232 relative to the body 270. The body 270 defines a first through-hole 276 Figure 10 Figure 8 When the first mating feature 216 of the first beam 212 is secured to the second mating feature 224 of the second beam 214, the planar surface 262 of the first mating feature 216 is positioned in juxtaposed engagement with the planar surface 272 of the second mating feature 224 of the second beam 214. In this position, with the first beam 212 and the second beam 214 each in an undeformed state, the ligating clip 200 is in an open position

[0071] The first end of each of the first beam 212 and the second beam 214 includes a second through-hole 278 that extends between the sidewalls of the first beam 212 and the second beam 214. The second through-hole 278 allows a portion of the first end 212a and 214a of each of the first beam 212 and the second beam 214 to flex inwardly as the ligating clip 200 is moved toward a clamped position to facilitate closure of the ligating clip 200. In aspects of the disclosed ligating clip, the first and second through-holes 278 can have a diamond shape, although other configurations are contemplated, such as, for example, an oval shape, a circular shape, etc.

[0072] Figure 12 is shown supported in the open position in an applicator 100 (​​Figure 4 The ligation clamp 200 is positioned between the first jaw 102 and the second jaw 104. In this position, a boss 220 on the first beam 212 of the ligation clamp 200 is received within a recess 108a in the jaw 102 of the clamp applicator 100, and a boss 228 on the second beam 214 of the ligation clamp 200 is received within a recess 108b in the jaw 104 of the clamp applicator 100. A first clamping surface 222 on the second end 212b of the first beam 212 is spaced apart from a second clamping surface 232 on the second end 214b of the second beam 214, such that a first locking element 218 is spaced apart from a second locking element 226. In this position, minimal strain is applied to the first beam 212 and the second beam 214.

[0073] Figure 13 and Figure 14 The diagram illustrates the application of clamp 100 ( Figure 4 The jaws 102 and 104 of the clamps are brought close together to move the ligation clamp 200 from the open position. Figure 12 ) Towards the clamping position ( Figure 14 ) Ligating clamp 200 and clamp applicator 100 during movement Figure 4 As shown in the figure, when the first beam 212 approaches the second beam 214, the first beam 212 and the second beam 214 bend at their hinge portions 264 and 274 respectively, causing the clamping surfaces 222 and 232 of the first beam 212 and the second beam 214 to move side by side and align. When the ligation clamp 200 approaches the clamping position ( Figure 13 When the first beam 212 moves, the first locking element 218 moves through the channel 242a defined in the latch receiver 242. Figure 13 When the first locking element 218 moves through the channel 242a of the latch receiver 242, the contact between the first locking element 218 and the second locking element 226 causes the first locking element 218 to be engaged by the latch receiver 242. Figure 13 The arrow "C" in the diagram indicates outward bias to allow the first locking element 218 to be biased outward in the direction indicated by the arrow "C" in the diagram. Figure 14 The arrow "D" indicates the direction and engages with the second locking element 226. In this position, the organization "T" is clamped between the first clamping surface 222 and the second clamping surface 232 of the first beam 212 and the second beam 214, respectively. As described above, the first beam 212 and the second beam 214 deform around their respective hinge portions 264 and 274 to create a tendency to advance the beams 212 and 214 to the open position. Figure 12 The force helps to keep the first locking element 218 and the second locking element 226 engaged with each other to hold the ligation clamp 200 in the clamped position.

[0074] While the beams 212, 214 of the ligature clip 200 are illustrated as being coupled together during delivery of the ligature clip 200 to the surgical site, it is also contemplated that the first beam 212 and the second beam 214 (as well as the beams 12, 14 of the ligature clip 10) can be delivered to the surgical site as separate components and coupled together upon delivery to the surgical site prior to being moved to the clamped position. This would allow the first beam 212 and the second beam 214 to be delivered to the surgical site with the first beam 212 longitudinally aligned with the second beam 214 (such as, for example, in the open position as shown in FIGS. 1-3 and 10-12 with respect to the ligature clip 10), to facilitate delivery of the ligature clip 200 through a small diameter cannula or incision. Figure 1

[0075] Figures 15 to 18 Another exemplary embodiment of the disclosed ligature clip is illustrated and generally shown as 300. The ligature clip 300 is substantially similar to the ligature clip 10 Figure 1 ) and 200 Figure 8 ) except for the configuration of the first mating feature 316 on the first beam 312 and the configuration of the second mating feature 324 on the second beam 314. Accordingly, for the sake of brevity, only the first mating feature 316 and the second mating feature 324 are described in detail herein.

[0076] Figure 15 The ligature clip 300 is illustrated in the open position with the first beam 312 spaced apart from the second beam 314. In contrast to the ligature clip 10 Figure 1 ) and 200 Figure 8 ), the first beam 312 and the second beam 314 of the ligature clip 300 are each and respectively pivotably coupled to one another at one end. Rather, the first beam 312 and the second beam 314 are moved in parallel directions to the closed position to clamp the tissue "T" Figure 18 ). As described above with respect to the ligature clip 10 and 200, the first beam 312 of the ligature clip 300 includes the first clamping surface 322 and the second beam 314 of the ligature clip 300 includes the second clamping surface 332. The first mating feature 316 on the first end 312a of the first beam 312 is substantially similar to the first locking element 318 on the second end 312b of the first beam 312. More specifically, in the ligature clip 300, each end of the first beam 312 includes a first locking element 318. As described above with respect to the locking element 18 Figure 1 ) of the ligature clip 10, the locking element 318 includes a hook-shaped latch 340. Similarly, the second mating feature 324 on the first end 314a of the second beam 314 is substantially similar to the second locking element 326 on the second end of the second beam 314. More specifically, in the ligature clip 300, each end of the second beam 314 includes a second locking element 326. As described above with respect to the ligature clip 10​Figure 1 ) of locking element 26 described above, the second locking elements 326 on each end of the second beam 314 each include a latch receiver 342 positioned to receive and engage one of the latches 340 of the first locking elements 318 to secure the first beam 312 relative to the second beam 314 to maintain the ligating clip 300 in the clamped position Figure 16 ) of the disclosed ligating clip, the latch receivers 342 define a channel 342a between the second bosses 328 that guides or directs the latches 340 into engagement with the latch receivers 342. The first beam 312 includes bosses 320.

[0077] Figure 17 and Figure 18 The ligating clip 300 is illustrated when the ligating clip 300 is clamped around tissue "T". When the ligating clip 300 is positioned around the tissue "T", the first beam 312 is on one side of the tissue "T" and the second beam 314 is on the opposite side of the tissue "T" with the first locking elements 318 aligned with the second locking elements 326. Next, the first beam 312 and the second beam 314 are brought together to clamp the tissue "T" between the first clamping surface 322 and the second clamping surface 332. As discussed above, when the first locking elements 318 engage the second locking elements 326, the first locking elements 318 move through the channel 342a defined in the latch receiver 342. As the first locking elements 318 move through the channel 342a of the latch receiver 342, the contact between each first locking element 318 and the corresponding second locking element 326 biases the first locking element 318 outward to allow the first locking element 318 to pass and engage with the latch receiver 342 Figure 18 ) in the clamped position. As described above, the first beam 312 and the second beam 314 can be independently delivered to the surgical site with the beams 312, 314 longitudinally aligned to facilitate delivery of the ligating clip through a small diameter incision or trocar.

[0078] Figures 19 to 24 A surgical clip applier is illustrated, generally shown as clip applier 500, which can be used to apply surgical clips (e.g., ligating clip 10 Figure 1 ) to tissue "T". The clip applier 500 includes a handle assembly 510, an elongated shaft 512 defining a longitudinal axis "X", and a tool assembly 514 Figure 20 ) The handle assembly 510 includes a fixed handle 516 and a movable trigger 518 that is movable from an un-compressed position Figure 19) toward the fixed handle 516 to a compressed position to operate the tool assembly 514 Figure 20 ) In aspects of the disclosed ligature clip applier, the elongated shaft 512 includes a proximal end portion supported by a fan-shaped rotary knob 520. The fan-shaped rotary knob 520 is supported on the handle assembly 510 for rotation such that rotation of the rotary knob 520 about the longitudinal axis “X” causes rotation of the elongated shaft 512 and the tool assembly 514 about the longitudinal axis “X” relative to the handle assembly 510.

[0079] The elongated shaft 512 defines a stepped channel 524 that extends out from the handle assembly 510 and houses the tool assembly 514. The stepped channel 524 has a first portion 524a and a second portion 524b that is narrower in width than the first portion 524a. The tool assembly 514 is housed within the first portion 524a of the stepped channel 524 and is movable from a retracted position ( Figure 21 ) within the stepped channel 524 to an advanced position ( Figure 22 ) that extends out from a distal end of the stepped channel 524. The ligature clip 10 extends into and is partially housed within the second portion 524b of the stepped channel 524. As the tool assembly 514 is moved within the stepped channel 524 from its retracted position to its advanced position, engagement between the ligature clip 10 and the walls that define the second portion 524b of the stepped channel 524 maintains the orientation of the ligature clip 10 within the stepped channel 524 and on the tool assembly 514.

[0080] Figure 20 and Figure 21 The tool assembly 514 is illustrated as including a first jaw 530, a second jaw 532, and an actuator rod 534. The first jaw 530 supports the second jaw 532 and is longitudinally movable within the first portion 524a of the stepped channel 524 between its retracted position ( Figure 21 ) and its advanced position ( Figure 22 ). The first jaw 530 is supported on a distal end of a crossbar 538 that extends through the elongated shaft 512 from the handle assembly 510. The crossbar 538 defines a channel 540 for housing the actuator rod 534. The fixed jaw 530 includes side walls 542 that define a cavity 544 between the side walls 542 and a hole 546 in each side wall 542. The cavity 544 is in communication with the channel 540. The first jaw 530 includes a distal end 548 that includes spaced apart arms 550. Each spaced apart arm 550 defines a recess 552 that houses the boss 28 on the second beam 14 of the ligature clip 10 to support the ligature clip 10 on the first jaw 530.

[0081] The second jaw 532 includes a first end portion 554, which includes spaced-apart hubs 556. Each spaced-apart hub 556 supports a pivot 556a, which is received within one of the holes 546 of the first jaw 530 to pivotally connect the second jaw 532 to the first jaw 530. The second jaw 532 also includes an arm 558 extending from the first portion 554 of the second jaw 532 to a second portion 560 of the second jaw 532. The second portion 560 includes a pair of spaced-apart supports 562 defining a cavity 564. The cavity 564 receives a boss 20 of the ligation clamp 10 to support the first beam 12 of the ligation clamp 10 on the second jaw 532. Figure 21 ).

[0082] The actuator rod 534 can be in the forward position within the channel 540 of the crossbar 538 and the cavity 544 of the fixed jaw 530. Figure 21 ) and retraction position ( Figure 25 The actuator rod 534 moves between the forward position and includes a distal end 566 having a fork 568. The fork 568 includes two fangs 568a. Each fang 568a is coupled via a flexible coupling 570 to one of the spaced-apart hubs 556 of the second jaw 532. The connection point between the flexible coupling 570 and the spaced-apart hub 556 is located outside the lateral axis defined by the pivot 556a of the second jaw 532. When the actuator rod 534 moves from the forward position ( Figure 21 Move to the retracted position. Figure 25 When the first jaw 530 is in the open position, the fang 568a pivots the second jaw 532 about a transverse axis defined by the pivot 556a, so that the second jaw 532 moves relative to the first jaw 530 from the open position. Figure 21 Pivot to the clamping position ( Figure 25 ).

[0083] When clinicians use clamp applicator 500 ( Figure 19 When the ligation clamp 10 is positioned onto the tissue via endoscopy, the elongated shaft 512 and tool assembly 514 are inserted through a cannula and / or an incision in the patient's body to access the surgical site. When the tool assembly 514 is inserted through the cannula, it is in the open position. In the open position, the first jaw 530 is longitudinally aligned with the second jaw 532 to facilitate placement through a small-diameter incision or cannula. Figure 21As shown, the clip applier 10 is supported within the first jaw 530 and the second jaw 532 in the fully open position. In the fully open position, the beams 12, 14 are supported on the first jaw 530 and the second jaw 532 and such that the respective clamping surfaces 22, 32 of the first beam 12 and the second beam 14 of the clip applier 10 are longitudinally aligned and face in substantially the same direction. The boss 28 of the second beam 14 is received in the recess 552 of the second jaw 14 and the boss 20 is received in the recess 564 of the second jaw 53. In the open position, the width of the clip applier 10 is minimized to facilitate receipt of the clip applier 10 within the reduced diameter elongated shaft 512 and / or delivery of the clip applier 10 through a small diameter cannula and / or incision. Further, the clip applier 10 is in a relaxed state such that minimal strain is placed on the clip applier 10 prior to application of the clip applier 10 to the tissue "T" (FIG. 1). Figure 25

[0084] Figure 22 and Figure 23 The clip applier 500 is illustrated with the tool assembly 514 moved to an advanced position extending out of the elongated shaft 512. The tool assembly 514 is moved to the advanced position in the direction indicated by arrow "A" via operation of the trigger assembly 510. As the tool assembly 514 is moved out of the elongated shaft 512, the first jaw 530 is moved through the distal end of the elongated shaft 512 to expose the clip applier 10 in the open position.

[0085] Figure 24 and Figure 25 The distal end of the clip applier 500 (FIG. 1) is illustrated as the tool assembly 514 is actuated to apply the clip applier 10 about the tissue "T". As the tool assembly 514 is actuated to apply the clip applier 10 about the tissue "T", the actuator rod 534 (FIG. 1) is moved from its advanced position to its retracted position in the direction indicated by arrow "B" in FIG. 6 to move the flexible link 570 about the transverse pivot axis defined by the pivot member 556a to pivot the second jaw 532 in the direction indicated by arrow "C". As the second jaw 532 is pivoted toward the first jaw 530, the first beam 12 of the clip applier 10 is pivoted toward the second beam 14 to move the first locking element 18 of the first beam 12 into latching engagement with the second locking element 26 of the second beam 14 to retain the clip applier 10 in the clamped position. Figure 19 Figure 25 Figure 25

[0086] ​​​​Although not depicted, the ligation clip applier 500 can be used to apply the ligation clip 10 to tissue. In aspects of the disclosure, the ligation clip 10 can be delivered to a surgical site with the first beam and the second beam separated from one another, where the first beam 12 and the second beam 14 are joined immediately prior to applying the ligation clip 10 to tissue. For example, the ligation clip applier 500 can be configured to deliver the clip 10 to the jaws of the ligation clip applier with the first beam and the second beam separated from one another such that the width of the clip is minimized to facilitate housing the clip within a small diameter shaft and to minimize strain on the ligation clip or portions of the ligation clip. As discussed above, this prevents degradation of the condition and / or performance of the ligation clip during storage of the clip within the ligation clip applier and / or during delivery of the ligation clip to a surgical site.

[0087] Although not described in detail herein, it is contemplated that exemplary aspects of the ligation clip described in the present application can be formed from an elastic polymeric material, including those listed above. Other construction materials are also contemplated.

[0088] Those skilled in the art will appreciate that the devices and methods specifically described herein and illustrated in the accompanying drawings are non-limiting exemplary aspects of the disclosed ligation clip. It is contemplated that elements and features illustrated or described in connection with one exemplary embodiment can be combined with the elements and features of another embodiment without departing from the scope of the disclosure. Likewise, those skilled in the art will appreciate other features and advantages of the disclosure based on the above-described aspects of the disclosed ligation clip. Accordingly, the disclosure is not to be limited by what has been particularly shown and described, but is instead defined by the appended claims.

Claims

1. A ligation clamp, comprising: A first beam has a first end, a second end, and a first clamping surface located between the first end and the second end in the longitudinal direction. The first end includes a first mating feature, and the second end includes a first locking structure. The second beam has a first end, a second end, and a second clamping surface located between the first end and the second end in the longitudinal direction. The first end of the second beam includes a second mating feature, and the second end of the second beam includes a second locking structure. The second mating feature is adapted to engage with the first mating feature to connect the first beam to the second beam. The first beam is movable relative to the second beam to move the ligation clamp from an open position to a clamped position, and the first locking structure is adapted to engage the second locking structure to secure the ligation clamp in the clamped position. The second beam includes sidewalls, and a first end of the second beam defines a second through-hole extending between the sidewalls and disposed within the first end of the second beam. The second through-hole forms a flexible portion positioned to engage the first beam when the ligation clamp moves from the open position toward the clamped position, thereby pushing the ligation clamp toward the open position. The first mating feature includes a hook portion defining a semi-cylindrical recess, and the second mating feature includes a transverse post received within the semi-cylindrical recess to pivotally connect the first beam to the second beam. The first end of the second beam defines a first through hole for accommodating the hook portion. Wherein, the transverse post defines one end of the first through hole; and Wherein, the first mating feature and the first locking structure each include a hook-shaped latch, and the second mating feature and the second locking structure each include a latch receiver, wherein the hook-shaped latch is movable to engage with the corresponding latch receiver to secure the ligation clamp in the clamping position.

2. The ligation clamp according to claim 1, wherein, The first mating feature includes a first body supporting the protrusion, and the second mating feature includes a second body defining a first through hole, the first through hole being sized to accommodate the protrusion to connect the first beam to the second beam.

3. The ligation clamp according to claim 2, wherein, The first body of the first mating feature defines a first flat surface connected to the first clamping surface of the first beam, and the second body of the second mating feature defines a second flat surface connected to the second clamping surface of the second beam. When the first mating feature and the second mating feature are connected together, the first flat surface and the second flat surface are adjacent to each other.

4. The ligation clamp according to claim 3, wherein, The first flat surface of the first mating feature and the second flat surface of the second mating feature are oriented such that when the first mating feature and the second mating feature are joined together, the ligation clamp is in the open position in an undeformed state.

5. The ligation clamp according to claim 2, wherein, The protrusion is arrow-shaped and includes a retaining head with a retaining surface positioned to engage the second body of the second mating feature to prevent the protrusion from being removed from the first through-hole.

6. The ligation clamp according to claim 1, wherein, The first beam includes a first boss located on each side of the second end of the first beam, and the second beam includes a second boss located on each side of the second end of the second beam.

7. The ligation clamp according to claim 1, wherein, The first mating feature is adapted to be releasably coupled to the second mating feature.

8. A ligation clamp, comprising: A first beam, the first beam having a first mating feature and defining a first clamping surface; A second beam, having a second mating feature and defining a second clamping surface, the second mating feature being coupled to the first mating feature to pivotally connect the first beam to the second beam, such that the ligation clamp can be moved from an open position to a clamping position, wherein... In the open position, the first beam and the second beam are longitudinally aligned, and the first clamping surface and the second clamping surface face the same direction. The second beam includes sidewalls, and a first end of the second beam in the longitudinal direction defines a second through-hole extending between the sidewalls of the second beam and disposed within the first end of the second beam. The second through-hole forms a flexible portion, which is positioned to engage the first beam when the ligation clamp moves from the open position toward the clamped position, thereby pushing the ligation clamp toward the open position. The first mating feature includes a hook portion defining a semi-cylindrical recess, and the second mating feature includes a transverse post received within the semi-cylindrical recess to pivotally connect the first beam to the second beam. The first end of the second beam defines a first through hole for receiving the hook. Wherein, the transverse post defines one end of the first through hole; and The first mating feature includes a hook-shaped latch, and the second mating feature includes a latch receiver, wherein the hook-shaped latch is movable to engage with a corresponding latch receiver to secure the ligation clamp in the clamping position.

9. The ligation clamp according to claim 8, wherein, The first and second beams of the ligation clamp are formed of polymer material.

10. The ligation clamp according to claim 9, wherein, The first and second mating features are configured to cause minimal strain on the first and second beams when the ligation clamp is in the open position.

11. The ligation clamp according to claim 8, wherein, Each of the beams includes a boss adapted to support the ligation clamp within the applicator.

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