CN216854766U - Clamp closing assembly and clamp applier - Google Patents

Abstract

The utility model provides a clamp closing assembly, which comprises a clamp and a firing sheet, wherein the clamp is provided with a clamping groove; the distal end of the clamp is provided with a first clamp arm and a second clamp arm; the far end of the firing piece is provided with a supporting bottom plate, the left side of the supporting bottom plate is provided with a first side wall used for extruding the first clamp arm to move towards the direction of the second clamp arm, and the right side of the supporting bottom plate is provided with a second side wall used for extruding the second clamp arm to move towards the direction of the first clamp arm; the top end of the first side wall is provided with a first limiting part bent towards the second side wall, the top end of the second side wall is provided with a second limiting part bent towards the first side wall, the first clamp arm is positioned between the first limiting part and the supporting bottom plate, and the second clamp arm is positioned between the second limiting part and the supporting bottom plate; the supporting bottom plate is provided with a first acting position extending out of the first side wall and the second side wall, and the middle of the far end of the first acting position is provided with a notch with an opening facing to the far side. Stabilizing the firing plate closing jaws. The utility model also provides a clip applier having the above clip closing assembly.

Description

Clamp closing assembly and clamp applier

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a clamp closing assembly and a clamp applier.

Background

To fully expose the surgical field during surgery, ligation of blood vessels around the target tissue is required to prevent bleeding. Hemostasis technology has become one of the cores of basic operation technology of surgical operation, and surgical operation of any part of human body involves bleeding and hemostasis almost without exception, and hemostasis is generally closed by using a clip applier.

In the using process of the clip applier, the phenomena of crossing, twisting and abnormity of two clamping arms of the hemostatic clip can occur when the hemostatic clip is closed, so that the ligation effect of the hemostatic clip on blood vessels is poor, and even bleeding cannot be prevented.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the problems in the art described above, the present invention is at least partially addressed. Therefore, the first purpose of the present invention is to provide a clip closing assembly, which reduces the crossing, twisting and abnormal-shaped phenomena of two clip arms of a hemostatic clip, and improves the success rate of the operation.

It is a second object of the present invention to provide a clip applier having a jaw closure assembly as described above.

(II) technical scheme

In order to achieve the purpose, the utility model adopts the main technical scheme that:

in one aspect, the present invention provides a clip closure assembly comprising a clip and a firing plate; the distal end of the clip having first and second arms for forming a distally-facing jaw; the far end of the firing plate is provided with a supporting bottom plate positioned below the clamp, the left side of the supporting bottom plate is provided with a first side wall upwards used for extruding the first clamp arm to move towards the direction of the second clamp arm, and the right side of the supporting bottom plate is provided with a second side wall upwards used for extruding the second clamp arm to move towards the direction of the first clamp arm; the top end of the first side wall is provided with a first limiting part bent towards the second side wall, the top end of the second side wall is provided with a second limiting part bent towards the first side wall, the first clamp arm is positioned between the first limiting part and the supporting bottom plate, and the second clamp arm is positioned between the second limiting part and the supporting bottom plate; the supporting bottom plate is provided with a first acting position extending out of the first side wall and the second side wall towards far direction, and the middle part of the far end of the first acting position is provided with a first notch with an opening facing far direction.

Optionally, the distal end of the first forceps arm is provided with a first clip containing portion, and the distal end of the second forceps arm is provided with a second clip containing portion; in the process that the trigger piece closes the clamp, the trigger piece moves from the trigger initial position to the trigger ending position; when the firing plate is positioned at the firing ending position, the first notch is positioned at the proximal end right below the first clip containing part and the second clip containing part.

Optionally, the distal end of the first forceps arm further has a first forceps closing portion located proximal to the first jaw accommodating portion; the distal end of the second forceps arm is also provided with a second forceps closing part which is positioned at the near side of the second clip containing part; when the firing piece is positioned at the initial firing position, the first notch is positioned at the far end right below the first closed clamp part and the second closed clamp part.

Optionally, the firing plate is movable between a proximal initial position and a distal end position arranged from proximal to distal; when the firing sheet is located at the distal end position, the first notch is located at the proximal end right below the first clip containing part and the second clip containing part.

Optionally, the first recess is semi-elliptical.

Optionally, the support base plate has a support position located near the first action position and connected to the first action position, an upper plane of the support position is flush with an upper plane of the first action position, and a thickness of the support position is greater than a thickness of the first action position; the bottom of the first action position is provided with a first downward supporting rib position and a second downward supporting rib position; the near end of the first supporting rib position and the near end of the second supporting rib position are both connected with the far end of the supporting position and are positioned in the middle of the supporting position in the left-right direction; the distal end of first support rib position and the distal end of second support rib position all are connected with the distal end of first effect position to the distal end of first support rib position is located the left side of notch, and the distal end of second support rib position is located the right side of notch.

Optionally, the first support rib position and the second support rib position are both triangular sheets.

Optionally, the firing plate further comprises a limit top plate, a first end of the limit top plate is fixedly connected with the top end of the first side wall, a second end of the limit top plate is fixedly connected with the top end of the second side wall, and the first forceps arm and the second forceps arm are both located between the limit top plate and the support bottom plate.

Optionally, a first slot is formed in the top of the first clamp arm, a second slot is formed in the top of the second clamp arm, and the first slot and the second slot both extend in the distance direction; in the process of closing the clamp by the firing plate, the far end of the limiting top plate can be inserted into the first slot and the second slot from near to far; after the limit top plate is inserted into the first slot and the second slot, the trigger piece continues to move far, the limit top plate can move far along the first slot and the second slot, the first slot can move towards the second slot along the limit top plate, and the second slot can move towards the first slot along the limit top plate until the jaw is completely closed.

A second aspect of the utility model provides a clip applier having a jaw closure assembly as described above.

(III) advantageous effects

The utility model has the beneficial effects that:

by means of the first limiting portion which is arranged at the top end of the first side wall and is bent towards the second side wall, the second limiting portion which is bent towards the first side wall is arranged at the top end of the second side wall, and the first notch with the opening facing far away is formed in the middle of the far end of the first action position, so that in the process of closing the forceps through the firing plate, the first action position can move to a certain degree under the first jaw accommodating portion and the second jaw accommodating portion, the blood vessel to be clamped in the forceps opening is not ejected outwards, the action position of the support bottom plate on the forceps is prolonged far away, the downward limiting effect of the support bottom plate on the first forceps arm and the second forceps arm is further enhanced, the upper and lower restraint of the firing plate on the two forceps arms is facilitated, the phenomena of crossing, twisting and abnormal shape of the two clamping arms of the hemostatic forceps when the hemostatic forceps are clamped by the forceps closing assembly are reduced, and the success rate of the operation is improved.

Drawings

The utility model is described with the aid of the following figures:

FIG. 1 is a schematic, cross-sectional view of the distal end of an exemplary clip applier incorporating a clip closure assembly according to the utility model;

FIG. 2 is an exploded schematic view of the jaw closure assembly of FIG. 1;

FIG. 3 is a schematic perspective view of a jaw closure assembly in accordance with an embodiment of the present invention;

FIG. 4 is a schematic bottom view of a jaw closure assembly in accordance with an embodiment of the utility model;

FIG. 5 is a schematic cross-sectional view of FIG. 4 in the direction A-A;

FIG. 6 is a schematic side view of a jaw closure assembly in accordance with an embodiment of the present invention;

FIG. 7 is a schematic top view of a jaw closure assembly in accordance with an embodiment of the present invention.

[ description of reference ]

1: clamping;

11: a clamp fixing plate;

111: a kidney-shaped hole;

12: a first clamp arm;

13: a second jawarm;

141: a first closed clamp part; 142: a first connection portion; 143: a first clip accommodating portion; 144: a first slot;

161: a second clamping part; 162: a second connecting portion; 163: a second clip accommodating portion; 164: a second slot;

2: a striking plate;

21: a support base plate; 212: a first notch;

211: a first action site; 214: a support position; 215: a first support rib position; 216: a second support rib position;

22: a first side wall;

221: a first limiting part; 222: a first card;

23: a second side wall;

231: a second limiting part; 232: a second card;

24: a blocking member;

25: a limiting top plate;

251: a second recess; 252: a third recess; 253: a second action site;

3: pressing into blocks;

4: a sleeve.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. It should be noted that "proximal" as referred to herein means the side closer to the operator, and "distal" means the side closer to the patient. As used herein, the terms "upper," "lower," "front," "rear," "left," "right," and like terms of orientation refer to the orientation of FIGS. 1 and 3, wherein a proximal-to-distal direction is also a rear-to-front direction.

To clearly illustrate the technical problem that the present invention actually solves, it is explained below by an exemplary jaw closure assembly and a clip magazine assembly of an exemplary clip applier. It should be understood, however, that the clip closure assemblies and clip cartridge arrangements of clip appliers set forth in the present disclosure should not be limited by the exemplary clip closure assemblies and clip cartridge arrangements of the exemplary clip appliers set forth herein; rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

As shown in FIGS. 1 and 2, the exemplary jaw closure assembly includes a jaw 1 and a firing plate 2 for closing the jaw. The clamp 1 comprises a clamp fixing plate 11, a first clamp arm 12 and a second clamp arm 13 extending along a far and near direction are arranged at the far end of the clamp fixing plate 11, the first clamp arm 12 and the second clamp arm 13 are arranged from left to right in sequence, and a jaw with an opening facing to a far direction is formed between the first clamp arm 12 and the second clamp arm 13. The distal end of the striking plate 2 has a support base 21 located below the forceps, an upward first side wall 22 and an upward second side wall 23 are provided on the left and right sides of the support base 21, respectively, the first side wall 22 and the second side wall 23 have a length smaller than the length of the support base 21 and are located at the distal end portion of the support base 21, the first forceps arm 12 and the second forceps arm 13 are located between the first side wall 22 and the second side wall 23, and the first side wall 22 is close to the first forceps arm 12 and the second side wall 23 is close to the second forceps arm 13. Generally, the first sidewall 22 and the second sidewall 23 are disposed side by side in the left-right direction. When the hemostatic clamp to be clamped is clamped in the jaw, the firing sheet 2 moves far in the process of closing the clamp by the firing sheet 2, the first side wall 22 presses the first clamp arm 12 to move towards the second clamp arm 13, and the second side wall 23 presses the second clamp arm 13 to move towards the first clamp arm 12 until the jaw is completely closed, namely the hemostatic clamp is clamped.

In the process of resetting the striking plate 2, the striking plate 2 moves towards the near direction, the squeezing effect of the striking plate 2 on the first clamp arm 12 and the second clamp arm 13 is relaxed, when the first clamp arm 12 and the second clamp arm 13 are both elastic pieces, the restoring force of the elastic pieces can be utilized, the first clamp arm 12 moves towards the direction far away from the second clamp arm 13, the second clamp arm 13 moves towards the direction far away from the first clamp arm 12 until the resetting of the striking plate 2 is completed, and at the moment, the first clamp arm 12 and the second clamp arm 13 restore to the initial position, namely, the jaw is opened for resetting.

According to the clamp closing assembly with the structural design, the phenomena of crossing, twisting and abnormity of the two clamping arms of the hemostatic clamp can occur in the actual use process (namely the actual process of closing the clamp by the firing plate 2). The applicant has found through research that the main factors causing the above-mentioned bad closure phenomenon of the hemostatic clamp are: in the process of closing the forceps by the firing plate 2, a first extrusion force of the first side wall 22 acting on the first forceps arm 12 is complex, a second extrusion force of the second side wall 23 acting on the second forceps arm 13 is complex, and the directions of the first extrusion force and the second extrusion force are crossed.

In order to reduce the phenomenon of poor clamping of the hemostatic clamp to be clamped in the process of clamping the jaw, in the clamping cabin device of an exemplary clamp applier, the clamping cabin device comprises a pressing block 3 and a sleeve 4 used for accommodating the proximal end of a clamp and the proximal end of a firing sheet 2, the pressing block 3 is positioned above the clamp, the proximal end of the pressing block 3 is inserted into and fixed in the sleeve 4, and the pressing block 3 compresses the clamp. The pressing block 3 is used for limiting the clamping forceps upwards, so that the phenomenon of poor clamping of the hemostatic clamp to be clamped in the process of clamping the jaw is reduced. However, the applicant has found that in the clip applier cartridge device designed as above, the distal end of the clip and the distal end of the firing plate 2 are generally cantilever beam structures, and during the process of closing the clip by the firing plate 2, since the first pressing force exerted by the first sidewall 22 on the first forceps arm 12 and the second pressing force exerted by the second sidewall 23 on the second forceps arm 13 are both complicated, there is often a situation that the distal end of the firing plate 2 and/or the distal end of the clip are tilted downward, so that when the first pressing force direction and the second pressing force direction cross each other, the first forceps arm 12 and the second forceps arm 13 still tilt upward or downward to different degrees, causing the two arms of the hemostatic clip to be clamped to cross, twist and be deformed, and thus the clamping is poor.

In summary, in the exemplary clip closing assembly and the clip chamber device of the exemplary clip applier, the first pressing force direction and the second pressing force direction are crossed with each other during the clipping process, so that the first forceps arm 12 and the second forceps arm 13 are relatively dislocated, and the crossing, twisting and abnormal shape of the two arms of the hemostatic clip to be clipped are caused.

To this end, the present invention proposes a jaw closure assembly. For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be embodied in various forms and should not be limited to the embodiments set forth herein.

As shown in FIGS. 3-7, the present embodiment provides a jaw closure assembly that includes a jaw 1 and a firing plate 2 for closing the jaw 1. The clamp 1 and the firing plate 2 have the structural design as described above and are not described in detail.

Further, as shown in fig. 3 and 4, in the striking plate 2, the top end of the first side wall 22 is provided with a first stopper portion 221 bent toward the second side wall 23, the top end of the second side wall 23 is provided with a second stopper portion 231 bent toward the first side wall 22, the first tong arm 12 is located between the first stopper portion 221 and the support base plate 21, and the second tong arm 13 is located between the second stopper portion 231 and the support base plate 21; the supporting base plate 21 has a first acting position 211 extending far from the first side wall 22 and the second side wall 23, and a first notch 212 opened far is opened at a far middle portion of a far end of the first acting position 211. In the forceps 1, the distal end of the first forceps arm 12 has a first closing forceps portion 141 and a first clamping receiving portion 143 for receiving a first arm of a hemostatic clip, the first closing forceps portion 141 is located at the proximal side of the first clamping receiving portion 143, the distal end of the second forceps arm 13 has a second closing forceps portion 161 and a second clamping receiving portion 163 for receiving a second arm of the hemostatic clip, and the second closing forceps portion 161 is located at the proximal side of the second clamping receiving portion 163; when the trigger piece 2 closes the clip 1, the first side wall 22 presses the first closing portion 141 to move the first jaw arm 12 toward the second jaw arm 13, and the second side wall 23 presses the second closing portion 161 to move the second jaw arm 13 toward the first jaw arm 12.

In the process that the trigger piece 2 closes the clamp 1, the trigger piece 2 moves from a trigger initial position to a trigger ending position; when the striking plate 2 is located at the firing end position, the first notch 212 is located at the proximal end right below the first and second clip receiving portions 143 and 163.

As the clamp closing assembly is arranged, the first notch 212 with the opening facing far away is formed in the middle of the far end of the first action position 211, so that in the process of closing the clamp 1 by the firing plate 2, the first action position 211 can move to a certain degree under the first clamping containing part 143 and the second clamping containing part 163, a to-be-clamped blood vessel in the clamp is not ejected out of a clamp jaw, the action position of the support base plate 211 on the clamp 1 is prolonged far away, the downward limiting effect of the support base plate 21 on the first clamp arm 12 and the second clamp arm 13 is further enhanced, the upper and lower restraint of the firing plate 2 on the two clamp arms is facilitated, the phenomena of crossing, twisting and abnormal shape of the two clamp arms of the hemostatic clamp generated by clamping the hemostatic clamp by the clamp closing assembly are reduced, and the success rate of the operation is improved.

It should be noted that, in the clip closing assembly as set forth above, during the clipping process, due to the effect of the first pressing force and the second pressing force, the distal end of the clip and the distal end of the firing plate 2 may be tilted and/or twisted upwards (downwards), but the first forceps arm 12 and the second forceps arm 13 are not displaced relatively, so that the stable closing of the clip to the hemostatic clip is not affected.

In the present embodiment, the smaller the gap left between the jaws 1 and the firing plate 2 in the up-down direction, the more beneficial the restraint of the distal end of the firing plate 2 on the two forceps arms, but the gap that remains cannot be too small to affect the movement of the firing plate 2 along the jaws 1.

Further, in the clip closing assembly provided in the present embodiment, the distal end of the first clip arm 12 further has a first connecting portion 142, and the first closing portion 141, the first connecting portion 142 and the first clip receiving portion 143 are connected in sequence from proximal to distal; the distal end of the second clamp arm 13 further has a second connecting portion 162, and a second closing clamp portion 161, a second connecting portion 162 and a second clamping receiving portion 163 are connected in this order from proximal to distal. In this embodiment, the first jaw receiving portion 143 serves as the distal end of the first jaw arm 12, and the second jaw receiving portion 163 serves as the distal end of the second jaw arm 13. Of course, similar effects can be achieved by directly connecting the first clamping portion 141 and the first clamping portion 143, and directly connecting the second clamping portion 161 and the second clamping portion 163.

Preferably, when the striking plate 2 is located at the initial firing position, the first notch 212 is located at the right lower distal end of the first and second clamping portions 141 and 161. Because the far ends of the forceps 1 and the firing plate 2 are usually cantilever beam structures, the far ends of the forceps 1 and the firing plate 2 which are arranged in this way have shorter cantilever lengths and high strength, and the interaction between the firing plate 2 and the forceps 1 is favorably enhanced.

Further, the firing plate 2 is movable between a proximal initial position and a distal end position arranged from proximal to distal. The proximal initial position may be a firing initial position of the firing plate 2, and the distal end position may be a distal end position of the firing plate 2. Of course, the proximal initial position may also be located proximal to the proximal initial position of the striking plate 2, and the distal end position may also be located distal to the end position of firing of the striking plate 2. It is further preferred that the first notch 212 is located just below and proximal to the first and second clip receiving portions 143, 163 when the firing plate 2 is in the distal end position. Thus, it is further ensured that the operation of the striking plate 2 does not interfere with the operation of the clip 1 for occluding a blood vessel.

Preferably, in the present embodiment, the first recess 212 is a semi-elliptical shape.

Preferably, as shown in fig. 3 and 4, the supporting base plate 21 has a supporting position 214 located near the first acting position 211 and connected to the first acting position 211, an upper plane of the supporting position 214 is flush with an upper plane of the first acting position 211, the first acting position 211 is sheet-shaped, and a thickness of the supporting position 214 is greater than a thickness of the first acting position 211; the bottom of first effect position 211 is provided with decurrent support rib position, and the near-end of support rib position is connected with the distal end of support position 214, and the distal end of support rib position is connected with the distal end of first effect position 211. In this way, the strength of the first action site 211 is increased.

Further preferably, in the present embodiment, the support rib positions include a first support rib position 215 and a second support rib position 216, a distal end of the first support rib position 215 is connected to the left side of the recess 212, and a proximal end of the first support rib position 215 is connected to a middle position of the support position 214 in the left-right direction; the distal end of the second support rib portion 216 is connected to the right side of the recess 212, and the proximal end of the second support rib portion 216 is connected to the middle portion of the support portion 214 in the left-right direction.

Further preferably, the supporting rib is triangular and flaky, and a first end angle of the supporting rib is used for filling an included angle at the joint of the first acting position 211 and the supporting position 214 and is connected with the first acting position 211 and the supporting position 214; the second end corner of the support rib position is connected with the far end of the support position 214; the third end angle of the supporting rib position is connected with the far end of the first action position 211.

Preferably, as shown in fig. 7, the striking plate 2 further comprises a limit top plate 25, a first end of the limit top plate 25 is fixedly connected to the top end of the first side wall 22, a second end of the limit top plate 25 is fixedly connected to the top end of the second side wall 23, and the first and second forceps arms 12 and 13 are both located between the limit top plate 25 and the support bottom plate 21. So set up spacing roof 25, the left side of spacing roof 25 is equivalent to first spacing portion 221, and the right side of spacing roof 25 is equivalent to the spacing portion 231 of second, can cooperate and support bottom plate 21 and carry out spacing from top to bottom to first tong arm 12 and second tong arm 13 simultaneously to close the connection through spacing roof 25 between first tong arm 12 and second tong arm 13, further guarantee not take place relative dislocation between first tong arm 12 and the second tong arm 13.

Further preferably, the first end of the top limit plate 25 has a second notch 251 with an opening facing to the left, and the second end of the top limit plate 25 has a third notch 252 with an opening facing to the right; the first position-limiting portion 221 has a first card 222 with a head portion extending to the right, and the second position-limiting portion 231 has a second card 232 with a head portion extending to the left; the first card 222 is clamped in the second recess 251, the first card 222 is in interference fit with the second recess 251, the second card 232 is clamped in the third recess 252, and the second card 232 is in interference fit with the third recess 252. In this way, the manufacture of the striking plate 2 is facilitated, and the mounting of the striking plate 2 with the pliers 1 is facilitated.

Further preferably, the top of the first clamp arm 12 is provided with a first slot 144, the top of the second clamp arm 13 is provided with a second slot 164, and the first slot 144 and the second slot 164 extend in the proximal and distal directions; during the process of closing the clamp 1 by the striking plate 2, the far end of the limit top plate 25 can be inserted into the first slot 144 and the second slot 164 from the near to the far; after the limit top plate 25 is inserted into the first slot 144 and the second slot 164, the firing plate 2 continues to move far, the limit top plate 25 can move far along the first slot 144 and the second slot 164, the first slot 144 can move along the limit top plate 25 to the second slot 164, and the second slot 164 can move along the limit top plate 25 to the first slot 144 until the jaws are completely closed. The first and second jawarms 12, 13 are further restrained by the provision of first and second slots 144, 164 which cooperate with the stop plate 25.

Further, in the present embodiment, as shown in fig. 3, 5 and 6, the top of the first connecting portion 142 is higher than the top of the first clamping portion 141 in the vertical direction, the top of the second connecting portion 162 is higher than the top of the second clamping portion 161 in the vertical direction, the top of the first connecting portion 142 is opened with the first slot 144, and the top of the second connecting portion 162 is opened with the second slot 164; the top stop plate 25 has a second active site 253 extending distally beyond the first sidewall 22 and the second sidewall 23; during the closing of the jaws by the blade 2, the distal end of the second functional portion 253 can be inserted proximally and distally into the first slot 144 and the second slot 164 and moved distally along the first slot 144 and the second slot 164.

Further, in the present embodiment, the support base plate 21 has an upward blocking member 24, the forceps fixing plate 11 is provided with a waist-shaped hole 111 into which the blocking member 24 extends and extends in the proximal and distal directions, and the blocking member 24 is slidably connected to the waist-shaped hole 111; when the distal end of the blocking member 24 contacts the distal end of the kidney-shaped hole 111, the first action position 211 is located near the first and second clip receiving portions 143 and 163, and the first action position 211 is located right below the first and second connecting portions 142 and 162. The stop member 24 and the waist-shaped hole 111 cooperate to constrain the initial proximal position and the terminal distal position of the striking plate 2 such that the initial proximal position of the striking plate 2 is closest to the position where the proximal end of the stop member 24 contacts the proximal end of the waist-shaped hole 111 and the terminal distal position of the striking plate 2 is farthest from the position where the distal end of the stop member 24 contacts the distal end of the waist-shaped hole 111.

The present invention provides a clip closure assembly that is suitable for use with both single hair and continuous hair clip appliers.

It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.

Claims (10)

1. A jaw closure assembly, characterized by,

comprises a clamp (1) and a firing plate (2);

the distal end of the clamp (1) is provided with a first clamp arm (12) and a second clamp arm (13) which are used for forming a clamp mouth with an opening facing to a far direction; the far end of the firing plate (2) is provided with a support bottom plate (21) positioned below the clamp, the left side of the support bottom plate (21) is provided with a first side wall (22) upwards used for pressing the first clamp arm (12) to move towards the direction of the second clamp arm (13), and the right side of the support bottom plate (21) is provided with a second side wall (23) upwards used for pressing the second clamp arm (13) to move towards the direction of the first clamp arm (12);

a first limiting part (221) bent towards the second side wall (23) is arranged at the top end of the first side wall (22), a second limiting part (231) bent towards the first side wall (22) is arranged at the top end of the second side wall (23), the first clamp arm (12) is located between the first limiting part (221) and the support bottom plate (21), and the second clamp arm (13) is located between the second limiting part (231) and the support bottom plate (21);

the supporting bottom plate (21) is provided with a first acting position (211) extending out of the first side wall (22) and the second side wall (23) far away, and a first notch (212) with an opening facing far away is formed in the middle of the far end of the first acting position (211).

2. The jaw closure assembly of claim 1,

the distal end of the first clamp arm (12) is provided with a first clamp accommodating part (143), and the distal end of the second clamp arm (13) is provided with a second clamp accommodating part (163);

in the process that the trigger piece (2) closes the clamp (1), the trigger piece (2) moves from a trigger initial position to a trigger end position; when the firing plate (2) is located at the firing ending position, the first notch (212) is located at the lower proximal end of the first clamping containing part (143) and the second clamping containing part (163).

3. The jaw closure assembly of claim 2,

the distal end of the first clamp arm (12) is also provided with a first clamping closing part (141), and the first clamping closing part (141) is positioned at the near side of the first clamping containing part (143); the distal end of the second clamp arm (13) is also provided with a second closed clamp part (161), and the second closed clamp part (161) is positioned at the near side of the second clamp containing part (163);

when the firing piece (2) is located at the initial firing position, the first notch (212) is located at the far end right below the first clamping part (141) and the second clamping part (161).

4. The jaw closure assembly of claim 2 or 3,

the striking plate (2) can move between a near-end initial position and a far-end final position which are arranged from near to far;

when the striking plate (2) is located at the far end position, the first notch (212) is located at the lower near end of the first clamping containing part (143) and the second clamping containing part (163).

5. The jaw closure assembly of claim 1,

the first recess (212) is semi-elliptical.

6. The jaw closure assembly of claim 1,

the supporting bottom plate (21) is provided with a supporting position (214) which is located near the first action position (211) and connected with the first action position (211), the upper plane of the supporting position (214) is flush with the upper plane of the first action position (211), and the thickness of the supporting position (214) is larger than that of the first action position (211);

a first downward supporting rib position (215) and a second downward supporting rib position (216) are arranged at the bottom of the first acting position (211); the near end of the first supporting rib position (215) and the near end of the second supporting rib position (216) are both connected with the far end of the supporting position (214) and are positioned in the middle of the supporting position (214) in the left-right direction; the far end of the first supporting rib position (215) and the far end of the second supporting rib position (216) are both connected with the far end of the first action position (211), the far end of the first supporting rib position (215) is positioned on the left side of the notch (212), and the far end of the second supporting rib position (216) is positioned on the right side of the notch (212).

7. The jaw closure assembly of claim 6,

the first supporting rib positions (215) and the second supporting rib positions (216) are both triangular sheets.

8. The jaw closure assembly of claim 1,

the firing plate (2) further comprises a limiting top plate (25), the first end of the limiting top plate (25) is fixedly connected with the top end of the first side wall (22), the second end of the limiting top plate (25) is fixedly connected with the top end of the second side wall (23), and the first tong arm (12) and the second tong arm (13) are located between the limiting top plate (25) and the supporting bottom plate (21).

9. The jaw closure assembly of claim 8,

a first slot (144) is formed in the top of the first clamp arm (12), a second slot (164) is formed in the top of the second clamp arm (13), and the first slot (144) and the second slot (164) both extend in the distance direction;

during the process that the trigger piece closes the clamp, the far end of the limit top plate (25) can be inserted into the first slot (144) and the second slot (164) from the near to the far;

after the limit top plate (25) is inserted into the first slot (144) and the second slot (164), the striking plate (2) continues to move far, the limit top plate (25) can move far along the first slot (144) and the second slot (164), the first slot (144) can move along the limit top plate (25) to the second slot (164), and the second slot (164) can move along the limit top plate (25) to the first slot (144) until the jaws are completely closed.

10. A clip applier having a jaw closure assembly according to any one of claims 1 to 9.

Images