CN216854763U - 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 for closing the clamp; the clamp comprises a clamp fixing plate, wherein the distal end of the clamp fixing plate is provided with a first clamp arm and a second clamp arm which are used for forming a clamp mouth with an opening facing to the far direction; the inner side part of the first forceps arm is provided with a first slot with an insertion opening facing the second forceps arm, and the inner side part of the second forceps arm is provided with an insertion column extending to the first forceps arm; in the process of closing the clamp by the firing plate, at least part of the inserted column is always positioned in the first slot and can continuously move to the first clamp arm along the first slot, and the inserted column is limited up and down by the first slot. The phenomena of crossing, twisting and abnormity of the two clamping arms of the hemostatic clamp can be reduced, and the success rate of the operation is improved. 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 utility model is to provide a clamp closing assembly, which reduces the phenomena of crossing, twisting and abnormity of two clamping arms of a hemostatic clamp 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 for closing the clip; the clamp comprises a clamp fixing plate, wherein the distal end of the clamp fixing plate is provided with a first clamp arm and a second clamp arm which are used for forming a clamp mouth with an opening facing to the far direction; the inner side part of the first forceps arm is provided with a first slot with an insertion opening facing the second forceps arm, and the inner side part of the second forceps arm is provided with an insertion column extending to the first forceps arm; in the process of closing the clamp by the firing plate, at least part of the inserted column is always positioned in the first slot and can continuously move to the first clamp arm along the first slot, and the inserted column is limited up and down by the first slot.

Optionally, the insertion column is disposed at a position of the second forceps arm, and a position of the second forceps arm corresponding to the first insertion slot is provided after the forceps are stably clamped.

Optionally, the first slot has an inner slot portion embedded inside the first jawarm and an outer slot portion extending out of the first jawarm and facing the second jawarm; a second slot is formed in the second clamp arm in a manner of surrounding the inserting column, and the inserting column is provided with an inner column part embedded in the second clamp arm and an outer column part extending out of the second clamp arm and facing the first clamp arm; before the clamp is closed, the outer column part is positioned in the outer groove part; after the clamp is closed, the outer column part is located in the inner groove part, the outer groove part is located in the second slot, and the inner column part is located in the outer groove part.

Alternatively, the insert post is cylindrical, the outer slot portion is cylindrical, and the second slot is an annular slot.

Optionally, the first slot is disposed at a distal end of the first forceps arm, and the insertion post is disposed at a distal end of the second forceps arm.

Optionally, the distal end of the first forceps arm is provided with a first closed forceps part, a first connecting part and a first jaw accommodating part which are sequentially connected from near to far; the far end of the second clamp arm is provided with a second closed clamp part, a second connecting part and a second clamping containing part which are sequentially connected from near to far; the first slot is arranged on the first connecting part, and the inserting column is arranged on the second connecting part.

Optionally, the distal end of the firing plate has a support floor below the jaws; the left side of the supporting base plate is provided with a first side wall which is 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 base plate is provided with a second side wall which is upwards used for extruding the second clamp arm to move towards the direction of the first clamp arm; the support base has a first active position extending distally beyond the first and second sidewalls.

Optionally, the distal end of the firing plate has a support floor below the jaws; the left side of the supporting base plate is provided with a first side wall which is 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 base plate is provided with a second side wall which is upwards used for extruding the second clamp arm to move towards the direction of the first clamp arm; the firing plate further comprises a limiting top plate, the left side portion of the limiting top plate is fixedly connected with the top end of the first side wall, the right side portion of the limiting top plate is fixedly connected with the top end of the second side wall, and the first tong arm and the second tong arm are located between the limiting top plate and the supporting bottom plate.

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

In another aspect, the present invention provides a clip applier having a jaw closure assembly as described above.

(III) advantageous effects

The utility model has the beneficial effects that:

1. through setting up first slot and inserting the post, at the in-process of percussion piece closed clamp, insert the post and continue to insert to first slot, first slot is spacing about inserting the post, and the in-process of percussion piece closed clamp promptly inserts the post and continues to move to first tong arm along first slot all the time, retrains the removal orbit of inserting the post with the help of first slot, and then retrains the removal orbit of second tong arm for first tong arm. When the inserting column moves along the moving track of the inserting column in the clamping and closing process that the first clamp arm and the second clamp arm are not staggered relatively, the clamping and closing track of the first clamp arm and the clamping and closing track of the second clamp arm can be restrained to tend to the clamping and closing track that the first clamp arm and the second clamp arm are not staggered relatively, so that relative dislocation between the first clamp arm and the second clamp arm is not easy to occur, the phenomena of crossing, distortion and abnormity of two clamp arms of the hemostatic clamp, which are caused by the clamping and closing of the hemostatic clamp by the clamp closing assembly, are reduced, and the success rate of the operation is improved.

2. The first slot is used for being provided with an inner slot part embedded in the first clamp arm and an outer slot part extending out of the first clamp arm and facing the second clamp arm; the inner side part of the second slot is provided with a second slot around the inserting column, and the inserting column is provided with an inner column part embedded in the second clamp arm and an outer column part extending out of the second clamp arm and facing the first clamp arm; before the clamp is closed, the outer column part is inserted into the outer groove part, after the clamp is closed, the outer column part is inserted into the inner groove part, the outer groove part is inserted into the second slot, and the inner column part is positioned in the outer groove part; the situation that the inserting column is inserted out of the first clamp arm in the clamping process is avoided, and the matched use of the clip applier and the puncture outfit is ensured.

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 according to example 1 of the present invention;

FIG. 4 is a schematic front view of a jaw closure assembly according to example 1 of the present invention;

FIG. 5 is a schematic bottom view of a jaw closure assembly of example 1 of the present invention;

FIG. 6 is a schematic cross-sectional view in the direction A-A of FIG. 5;

FIG. 7 is a schematic cross-sectional view of FIG. 5 in the direction B-B;

FIG. 8 is a schematic side view of a jaw closure assembly of example 1 of the present invention;

FIG. 9 is a schematic top view of a jaw closure assembly of example 1 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 third slot;

15: a first slot; 151: an inner groove portion; 152: an outer groove portion;

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

17: inserting a column; 171: an inner column portion; 172: an outer column portion;

18: a second slot;

2: a striking plate;

21: a support base plate;

211: a first action site;

22: a first side wall;

221: a first clamp plate; 222: a first card;

23: a second side wall;

231: a second clamping plate; 232: a second card;

24: a blocking member;

25: a limiting top plate;

251: a first notch; 252: a second recess; 253: a second action site;

3: briquetting;

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 the like are used with reference to the orientation of FIGS. 1 and 3, wherein the proximal-to-distal direction is also the 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 and second arms 12, 13 are arranged side-by-side in a left-right direction, the first and second side walls 22, 23 are arranged side-by-side in a left-right direction, and the hemostatic clamp to be closed is captured within and at a distal end of the jaws. During the process that the trigger piece 2 closes the forceps, the trigger piece 2 moves far, the first side wall 22 presses the first forceps arm 12 to move towards the second forceps arm 13, and the second side wall 23 presses the second forceps arm 13 to move towards the first forceps arm 12 until the jaws are completely closed, namely the hemostatic forceps are closed.

In the resetting process of 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 and reset.

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, so that in the process of clamping the jaws, the first forceps arm 12 and the second forceps arm 13 approach each other, and the first forceps arm 12 and the second forceps arm 13 tilt upwards or downwards to different degrees, so that the two clamping arms of the hemostatic forceps to be clamped are crossed, twisted and deformed to form poor clamping.

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.

Example 1

As shown in FIGS. 3-9, the present embodiment provides a jaw closure assembly that includes a jaw and a firing plate 2 for closing the jaw.

The clamping and firing plate 2 has a structural design as described above and will not be described in detail. In addition, as shown in fig. 3 to 7, a first slot 15 having an insertion opening facing the second forceps arm 13 is opened at an inner side portion of the first forceps arm 12 (i.e., a side portion of the first forceps arm 12 for forming a jaw), and an insertion post 17 extending to the first forceps arm 12 is provided at an inner side portion of the second forceps arm 13 (i.e., a side portion of the second forceps arm 13 for forming a jaw); in the process that the firing plate 2 closes the clamp, at least part of the inserting column 17 is always positioned in the first slot 15 and can continuously move towards the first clamp arm 12 along the first slot 15, and the first slot 15 limits the upper part and the lower part of the inserting column 17.

The first slot 15 and the inserting column 17 are arranged in such a way that the inserting column 17 is continuously inserted into the first slot 15 in the process of closing the clamp by the firing plate 2, namely, the inserting column 17 continuously moves towards the first clamp arm 12 along the first slot 15 all the time, and the moving track of the inserting column 17 is restricted by means of the first slot 15, so that the moving track of the second clamp arm 13 relative to the first clamp arm 12 is restricted. When the moving track of the inserting column 17 along the first slot 15 is the moving track of the inserting column 17 in the clamping and closing process that the first forceps arm 12 and the second forceps arm 13 are not staggered relatively, the clamping and closing tracks of the first forceps arm 12 and the second forceps arm 13 can be restrained to tend to be the clamping and closing tracks which are not staggered relatively mutually, so that relative dislocation between the first forceps arm 12 and the second forceps arm 13 is not easy to occur, the phenomena of crossing, twisting and abnormal shape of two clamping arms of the hemostatic clamp when the hemostatic clamp is clamped and closed 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 described above, the distal end of the clip may still be tilted and/or twisted upwards (downwards) due to the first pressing force and the second pressing force during the clipping process, but the first forceps arm 12 and the second forceps arm 13 are difficult to be displaced relatively, and therefore, the stable closing of the clip by the clip is not affected.

In the present embodiment, the smaller the insertion gap left in the up-down direction after the insertion of the plug post 17 into the first slot 15 is, the better the restriction between the first slot 15 and the plug post 17 is, but the insertion gap cannot be too small to affect the movement of the plug post 17 along the first slot 15.

Preferably, the post 17 is located on the second jawarm 13 at a position corresponding to the first slot 15 for stable clamping of the clip. The stable clamping of the clamp means that the first clamp arm 12 and the second clamp arm 13 are not clamped in a relative dislocation manner. With such an arrangement, the movement track of the insertion column 17 along the first slot 15 is favorable for forming the movement track of the insertion column 17 in the clamping process that the first clamp arm 12 and the second clamp arm 13 are not relatively dislocated.

Preferably, the first slot 15 opens at the distal end of the first jawarm 12 and the post 17 is disposed at the distal end of the second jawarm 13. It is contemplated that the closer the interaction location of the first slot 15 and post 17 is to the distal-most end of the clip, the better the first slot 15 and post 17 will apply restraint to the first and second jawarms 12, 13, thereby opening the first slot 15 at the distal end of the first jawarms 12 and the post 17 at the distal end of the second jawarms 13.

Further, as shown in fig. 3 and 5, in the present embodiment, the distal end of the first forceps arm 12 has a first closing forceps portion 141, a first connecting portion 142 and a first clamping receiving portion 143 from proximal to distal, the distal end of the first closing forceps portion 141 is connected to the proximal end of the first connecting portion 142, the distal end of the first connecting portion 142 is connected to the proximal end of the first clamping receiving portion 143, and the first clamping receiving portion 143 is located at the distal end of the first forceps arm 12. The distal end of the second clamp arm 13 has a second closing clamp portion 161, a second connecting portion 162 and a second clamp holding portion 163 from proximal to distal, the distal end of the second closing clamp portion 161 is connected to the proximal end of the second connecting portion 162, the distal end of the second connecting portion 162 is connected to the proximal end of the second clamp holding portion 163, and the second clamp holding portion 163 is located at the distal end of the second clamp arm 13. The first clip containing part 143 is used for containing a first clip arm of the hemostatic clip, and the second clip containing part 163 is used for containing a second clip arm of the hemostatic clip; when the trigger piece 2 closes the clip, the first side wall 22 of the trigger piece 2 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 of the trigger piece 2 presses the second closing portion 161 to move the second jaw arm 13 toward the first jaw arm 12.

Further preferably, the first slot 15 is opened on the first connecting portion 142, and the plug 17 is disposed on the second connecting portion 162. In this way, the interaction of the first slot 15 and the post 17 is positioned as close as possible to the distal-most end of the clip without affecting the jaw capacity.

Of course, it is only preferable that the first insertion groove 15 is opened on the first connection portion 142 and the insertion column 17 is opened on the second connection portion 162; it is conceivable that similar effects can be achieved by providing the first slot 15 on the first clamping portion 141 and the post 17 on the second clamping portion 161.

As shown in FIG. 1, the jaw closure assembly is typically located at the distal end of the clip applier. Specifically, the proximal end of the jaw closure assembly is inserted into the sleeve 4 for securing and connecting to a power source; the distal end of the clip closure assembly extends beyond the sleeve 4 for clipping the vessel. In practice, clip appliers are often used in conjunction with a puncture instrument. To ensure that the distal end of the clip applier can pass through the puncture device smoothly into the body, the bore of the sleeve 4 in the existing clip applier is smaller than that of the puncture device of the matched specification, and the distal end of the clamped clip closing assembly is located in the supposed distal extension part of the sleeve 4. Therefore, when the clip applier is matched with the puncture outfit for use, the far end of the clip applier after clamping the jaw can smoothly pass through the puncture outfit to enter the human body.

In the clip closing assembly provided in this embodiment, as the jaws are smaller and smaller by the firing plate 2, the insertion column 17 may be inserted deeper into the first insertion slot 15, and the insertion column 17 may penetrate through the first forceps arm 12, so that after the clipping is completed, the insertion column 17 may have a portion inserted out of the first forceps arm 12, and due to the existence of the portion inserted out of the first forceps arm 12, the distal end of the clipped clip closing assembly may have a larger size, and there may be an extended portion where the distal end of the clipped clip closing assembly exceeds the sleeve, so that the distal end of the clip applier cannot smoothly pass through the matched puncture outfit, and the matching use of the clip applier and the puncture outfit is affected.

To this end, as shown in fig. 3, 4, 5 and 7, in the clip closing assembly of the present embodiment, the first insertion groove 15 has an inner groove portion 151 buried inside the first jawarm 12 and an outer groove portion 152 protruding from the first jawarm 12 and facing the second jawarm 13; a second slot 18 is arranged in the second clamp arm 13 around the inserting column 17, and the inserting column 17 is provided with an inner column part 171 embedded in the second clamp arm 13 and an outer column part 172 extending out of the second clamp arm 13 and facing the first clamp arm 12; outer post 172 is positioned within outer channel 152 prior to closure of the clip; when the clamp is closed, the outer post 172 is positioned within the inner slot 151, the outer slot 152 is positioned within the second slot 18, and the inner post 171 is positioned within the outer slot 152. Thus, the situation that the inserting column 17 is inserted out of the first clamp arm 12 in the clamping process is avoided, and the matched use of the clip applier and the puncture outfit is ensured.

Preferably, in the present embodiment, the insert post 17 has a cylindrical shape, the outer groove portion 152 has a cylindrical shape, and the second insertion groove 18 has an annular groove. Thus, the stable insertion of the plug 17 and the first slot 15 and the stable insertion of the outer slot 152 and the second slot 18 are facilitated.

Preferably, the support floor 21 has a first active position 211 that projects distally beyond the first side wall 22 and the second side wall 23. Through setting up first effect position 211, prolonged the support position of support bottom plate 21 to first tong arm 12 and second tong arm 13, further strengthened the downward limiting displacement of support bottom plate 21 to first tong arm 12 and second tong arm 13 simultaneously.

Preferably, when the firing plate 2 is located at the distal end position, the first action position 211 is located at the proximal side of 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. Therefore, the problem that the hemostatic clamp cannot completely clamp the blood vessel due to the fact that the blood vessel to be clamped in the jaw is ejected outwards by the first action position 211 extending to the right lower part of the first clamping part 143 and the second clamping part 163 in the working process of the firing plate 2 is avoided.

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.

It should be noted that when the striking plate 2 is located at the distal end position, the distal end of the first action site 211 is as close as possible to the farthest end of the first connecting portion 142 and the farthest end of the second connecting portion 162, so that the downward limiting function of the support base plate 21 on the first forceps arm 12 and the second forceps arm 13 is enhanced while the first action site 211 does not interfere with the blood vessel to be clamped.

Preferably, as shown in fig. 9, the top end of the first side wall 22 of the firing plate 2 is provided with a first clamping plate 221 which is bent towards the second side wall 23 relative to the first side wall 22, the top end of the second side wall 23 of the firing plate 2 is provided with a second clamping plate 231 which is bent towards the first side wall 22 relative to the second side wall 23, the first clamping arm 12 is located between the first clamping plate 221 and the support base plate 21, and the second clamping arm 13 is located between the second clamping plate 231 and the support base plate 21. Thus, by arranging the first packing plate 221, the first clamp arm 12 can be vertically limited by matching with the supporting base plate 21, and by arranging the second packing plate 231, the second clamp arm 13 can be vertically limited by matching with the supporting base plate 21, so that the insertion of the insertion column 17 into the first slot 15 is facilitated, and the situation of relative dislocation between the first clamp arm 12 and the second clamp arm 13 is reduced.

Preferably, the firing plate 2 further comprises a limit top plate 25, a left side portion of the limit top plate 25 is fixedly connected with a top end of the first side wall 22, a right side portion of the limit top plate 25 is fixedly connected with a top end of the second side wall 23, and the first and second forceps arms 12 and 13 are located between the limit top plate 25 and the support bottom plate 21. So, through setting up spacing roof 25, can cooperate the supporting baseplate 21 to carry out spacing from top to bottom simultaneously to first tong arm 12 and second tong arm 13 to carry out the closure connection between first tong arm 12 and second tong arm 13 through spacing roof 25, further guarantee not take place relative dislocation between first tong arm 12 and the second tong arm 13, be favorable to inserting post 17 and insert in first slot 15.

Further preferably, the left side part of the top limit plate 25 is provided with a first notch 251 with an opening facing to the left, and the right side part of the top limit plate 25 is provided with a second notch 252 with an opening facing to the right; the first clamping plate 221 has a first clamping piece 222 with a right extending head part, and the second clamping plate 231 has a second clamping piece 232 with a left extending head part; the first card 222 is clamped in the first recess 251, the first card 222 is in interference fit with the first recess 251, the second card 232 is clamped in the second recess 252, and the second card 232 is in interference fit with the second 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 is facilitated.

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

Further, in the present embodiment, as shown in fig. 7 to 9, 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 third slot 144, and the top of the second connecting portion 162 is opened with the fourth 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 striking plate 2, the distal end of the second functional portion 253 can be inserted proximally and distally into the third slot 144 and the fourth slot 164 and moved distally along the third slot 144 and the fourth slot 164.

The clip closure assembly provided by the present invention is suitable for both single and multiple hair clip appliers.

Example 2

The embodiment differs from embodiment 1 mainly in that:

the distal middle portion of the first active site 211 has a notch that opens distally. The notch is arranged for accommodating a blood vessel to be clamped, so that the first action position 211 can extend to a certain degree under the first clamping accommodating part 143 and the second clamping accommodating part 163 in the working process of the firing plate 2, the blood vessel to be clamped in the jaw is not ejected out of the jaw, and the downward limiting effect of the support bottom plate 21 on the first forceps arm 12 and the second forceps arm 13 is further enhanced.

Cooperatively, when the firing plate 2 is in the distal end position, the proximal ends of the notches are located proximal to the first and second clip receiving portions 143, 163. Therefore, the problem that the hemostatic clamp can not completely clamp the blood vessel due to the fact that the notch ejects the blood vessel to be clamped in the jaw outwards in the working process of the firing plate 2 is avoided.

The rest of the process is the same as that of embodiment 1 and is not repeated.

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 to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (10)

1. A jaw closure assembly, characterized by,

comprises a clamp (1) and a firing plate (2) for closing the clamp;

the clamp (1) comprises a clamp fixing plate (11), wherein the distal end of the clamp fixing plate (11) 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;

a first slot (15) with an inserting opening facing the second forceps arm (13) is formed in the inner side of the first forceps arm (12), and an inserting column (17) extending to the first forceps arm (12) is arranged on the inner side of the second forceps arm (13);

in the process that the firing plate (2) closes the clamp (1), at least part of the inserting column (17) is always positioned in the first slot (15) and can continuously move towards the first clamp arm (12) along the first slot (15), and the inserting column (17) is limited up and down by the first slot (15).

2. The jaw closure assembly of claim 1,

the inserting column (17) is arranged at the position of the second clamp arm (13), and is the position, corresponding to the first slot (15), on the second clamp arm (13) after the clamp is stably clamped.

3. The jaw closure assembly of claim 1,

the first inserting groove (15) is provided with an inner groove part (151) embedded in the first clamp arm (12) and an outer groove part (152) extending out of the first clamp arm (12) and facing the second clamp arm (13);

a second slot (18) is formed in the second clamp arm (13) and surrounds the inserting column (17), and the inserting column (17) is provided with an inner column part (171) embedded in the second clamp arm (13) and an outer column part (172) extending out of the second clamp arm (13) and facing the first clamp arm (12);

the outer post portion (172) is positioned within the outer channel portion (152) prior to closing of the clip; when the clamp is closed, the outer column portion (172) is located in the inner groove portion (151), the outer groove portion (152) is located in the second insertion groove (18), and the inner column portion (171) is located in the outer groove portion (152).

4. The jaw closure assembly of claim 3,

the insert column (17) is cylindrical, the outer groove portion (152) is cylindrical, and the second slot (18) is an annular groove.

5. The jaw closure assembly of claim 1,

the first inserting groove (15) is formed in the far end of the first clamp arm (12), and the inserting column (17) is arranged at the far end of the second clamp arm (13).

6. The jaw closure assembly of claim 1,

the far end of the first clamp arm (12) is provided with a first closed clamp part (141), a first connecting part (142) and a first clamping containing part (143) which are sequentially connected from near to far; the far end of the second clamp arm (13) is provided with a second closed clamp part (161), a second connecting part (162) and a second clamping containing part (163) which are sequentially connected from near to far;

first slot (15) set up in on first connecting portion (142), insert post (17) set up in on second connecting portion (162).

7. The jaw closure assembly of claim 1,

the distal end of the striking plate (2) is provided with a support bottom plate (21) positioned below the clamp;

a first side wall (22) which is used for pressing the first clamp arm (12) to move towards the second clamp arm (13) upwards is arranged on the left side of the supporting bottom plate (21), and a second side wall (23) which is used for pressing the second clamp arm (13) to move towards the first clamp arm (12) upwards is arranged on the right side of the supporting bottom plate (21);

the support floor (21) has a first active position (211) that projects distally beyond the first side wall (22) and the second side wall (23).

8. The jaw closure assembly of claim 1,

the distal end of the striking plate (2) is provided with a support bottom plate (21) positioned below the clamp;

a first side wall (22) which is used for pressing the first clamp arm (12) to move towards the second clamp arm (13) upwards is arranged on the left side of the supporting bottom plate (21), and a second side wall (23) which is used for pressing the second clamp arm (13) to move towards the first clamp arm (12) upwards is arranged on the right side of the supporting bottom plate (21);

the firing plate (2) further comprises a limiting top plate (25), the left side portion of the limiting top plate (25) is fixedly connected with the top end of the first side wall (22), the right side portion 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 third slot (144) is formed in the top of the first clamp arm (12), a fourth slot (164) is formed in the top of the second clamp arm (13), and the third slot (144) and the fourth slot (164) 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 third slot (144) and the fourth slot (164) from the near to the far;

after the limit top plate (25) is inserted into the third slot (144) and the fourth slot (164), the striking plate (2) continues to move far, the limit top plate (25) can move far along the third slot (144) and the fourth slot (164), the third slot (144) can move along the limit top plate (25) to the fourth slot (164), and the fourth slot (164) can move along the limit top plate (25) to the third 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.

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