CN217390785U - Suture spiral nail and suture device with small resistance release - Google Patents

Abstract

The application provides a suture spiral nail and stitching instrument of low resistance release, wherein, the suture spiral nail of low resistance release includes base member, two locking pieces and spiral needle head. The locking piece includes switching portion and spacing portion, and the switching portion is rotationally installed on the base member. Sew up the spiral nail under the operation of stitching up the ware, the spiral syringe needle gets into human tissue, and the anchoring is in human tissue, then will sew up the spiral nail and release from stitching up the ware, it loses the spacing effect of stitching up the ware to it to sew up the spiral nail this moment, make the joint end of pulling the piece again follow joint clearance department to the spacing portion application effort of side to locking piece, so that the locking piece rotates through the relative base member of switching portion, distance between two locking pieces is grow gradually this moment, the joint end is deviate from the joint clearance, the joint end does not need very big power just can deviate from the joint clearance like this, thereby make to sew up the spiral nail fast, and smoothly break away from the stitching up ware.

Description

Suture spiral nail and suture device with small resistance release

Technical Field

The application relates to the technical field of endoscopic minimally invasive medical equipment, in particular to a suture spiral nail released by small resistance and a suture instrument.

Background

The digestive endoscope minimally invasive surgery is implemented through a natural cavity, has small wound and quick postoperative recovery, and is widely popularized and used. In minimally invasive surgical procedures, closing the wound surface is the most common problem. Devices for closing wounds under a soft endoscope have certain limitations, and a device which can close wounds through suture threads similar to surgical open surgery is required. When the existing stitching instrument for continuously stitching the wound surface releases a stitching nail anchored on human tissue, if the other stitching nail is not operated properly, the other stitching nail can also be separated from the stitching instrument, and the other stitching nail is not anchored on the human tissue, so that the other stitching nail is invalid, the precision of the product for releasing the stitching nail is influenced, the wound cannot be effectively stitched, and the use reliability of the product is influenced.

SUMMERY OF THE UTILITY MODEL

To achieve the above object, an embodiment of a first aspect of the present application provides a low-resistance-release suture spiral nail, including: the device comprises a base body, wherein two switching grooves are symmetrically arranged at one end of the base body, and a first through hole penetrating through the base body is also formed in the base body; the two locking pieces are connected with the base body, a clamping gap is formed between the two locking pieces, the first through hole is communicated with the clamping gap, and the clamping gap is configured to be matched with a clamping end of a traction piece; the spiral needle head is fixed on the other end of the base body; the locking piece comprises a switching part and a limiting part which are connected, each switching part is installed in one switching groove and can rotate in the switching groove, and a rotating gap is formed between the limiting part and the base body.

The suture spiral nail released by small resistance is characterized in that the clamping gap comprises a clamping section and a gap section which are communicated with each other, the clamping section is close to the base body, and the distance between the locking pieces at the clamping section is greater than the distance between the locking pieces at the gap section.

The suture spiral nail of small resistance release as described above, wherein the distance between the two locking pieces becomes gradually smaller in the direction from the other end to the one end of the base.

The suture spiral nail with low resistance release is characterized in that the surfaces, opposite to the locking pieces, of the two locking pieces are respectively provided with a matching groove, the matching grooves extend along the direction from one end of the base body to the other end of the base body, and the matching grooves are configured to be matched with the clamping end of the traction piece.

The suture spiral nail with small resistance release as described above, wherein the outer surface of the stopper portion overlaps with the extension surface of the outer surface of the base body.

The suture spiral nail released by small resistance is characterized in that the switching groove is an arc-shaped groove, and the switching part is provided with an arc-shaped surface matched with the arc-shaped groove.

The suture spiral nail with low resistance release is characterized in that a transfer shaft is arranged in the transfer groove, two ends of the transfer shaft are fixedly connected with two side walls opposite to the transfer groove respectively, and the transfer part is rotatably connected with the transfer shaft.

The suture spiral nail with small resistance release is characterized in that an elastic piece is arranged between the locking piece and the base body.

The suture spiral nail released by small resistance is characterized in that the adapter part and the limiting part are of an integrated structure.

Compared with the prior art, the technical scheme has the following advantages:

the spiral needle head of the spiral suturing nail enters the human tissue and is anchored in the human tissue under the operation of the suturing device, then the suture spiral nail is pushed out from the suturing device, at the moment, the suture spiral nail loses the limiting function of the suturing device on the suture spiral nail, then the clamping end of the traction piece exerts acting force on the limiting part of the locking piece from the clamping gap to the side, so that the locking pieces rotate relative to the base body through the switching part, the distance between the two locking pieces is gradually increased, the clamping end of the traction piece is separated from the gap between the two locking pieces, so that the suturing screw nail is separated from the suturing device and stays in the human body, because the locking piece can rotate relative to the base body, the clamping end can be separated from the clamping gap without special large force, therefore, the sewing spiral nail can be quickly and smoothly separated from the stitching instrument, the use comfort of the product is improved, and the market competitiveness of the product is further improved.

Embodiments of a second aspect of the present application provide a stapler comprising: the mounting frame comprises a frame body and a connecting pipe, the connecting pipe comprises a connecting end and a free end which are oppositely arranged, and the connecting end is connected with the frame body; the suturing component comprises a plurality of suturing spiral nails released with small resistance, the plurality of suturing spiral nails are sequentially stacked in the connecting pipe and are positioned at the free end, and the connecting pipe can drive the suturing spiral nails to rotate; the pushing piece is arranged on the frame body and can move along the axial direction of the connecting pipe, the abutting end of the pushing piece is inserted into the connecting pipe and is pressed against the sewing assembly, and the pushing piece is provided with a second through hole penetrating through the pushing piece; the traction piece is arranged on the frame body and can move along the axial direction of the connecting pipe, the clamping end of the traction piece penetrates through the second through hole and extends into the connecting pipe, and the clamping end sequentially penetrates through the plurality of spiral suturing nails and is inserted into the clamping gap of the spiral suturing nail arranged close to the free end to be clamped with the spiral suturing nail; one end of the suture line sequentially penetrates through the first through holes of the plurality of suture spiral nails and is fixedly connected with the suture spiral nails arranged close to the free ends, other suture spiral nails can slide on the suture line, and the other end of the suture line penetrates out of the connecting pipe; and after the suturing screw nail is separated from the connecting pipe, the clamping end is separated from the clamping gap.

Compared with the prior art, the technical scheme has the following advantages:

the suturing device can be anchored in human tissues with a plurality of suturing grounds rapidly, suturing of the wound surface can be achieved after the suturing device enters a human body once, and suturing efficiency of the wound surface is improved, so that use comfort of a product is improved, and market competitiveness of the product is further improved. In addition, after pushing out the connecting pipe with a sewing spiral nail, the locking piece of sewing spiral nail loses the limiting displacement of connecting pipe to it, thereby make the locking piece rotate for the base member, and other sewing spiral nails are located the connecting pipe, the locking piece of other sewing spiral nails can't rotate for the base member, therefore, after the traction piece releases sewing spiral nail, can not continue to pull because of the inertia effect of traction piece and make remaining sewing spiral nail also released, thereby make every sewing spiral nail of stitching instrument released one by one accurately, and then guaranteed the precision of stitching instrument, the market competition of product has been increased.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application. Wherein:

FIG. 1 is an exploded view of a first embodiment of a stapler herein;

FIG. 2 is a cross-sectional structural view of a first embodiment of a stapler described herein;

FIG. 3 is an enlarged view of the portion A of FIG. 2;

FIG. 4 is a cross-sectional view of the suturing screw extending out of the attachment tube according to the present application;

FIG. 5 is a cross-sectional schematic view of the locking element of the present application in a rotated condition;

FIG. 6 is a schematic cross-sectional view of the cut-out and closure assembly of the present application;

FIG. 7 is a cross-sectional view of the severing member cutting the suture according to the present application;

FIG. 8 is a schematic view of the pusher member configuration described in the present application;

FIG. 9 is a schematic structural view of a first embodiment of a seaming spiral described herein;

FIG. 10 is an exploded view of the seaming spiral of FIG. 9;

FIG. 11 is a cross-sectional structural view of a second embodiment of a seaming spiral described herein;

FIG. 12 is a cross-sectional structural view of a third embodiment of a seaming spiral described herein;

FIG. 13 is a schematic cross-sectional view of a fourth embodiment of a suturing screw described herein;

FIG. 14 is a schematic cross-sectional view of a fifth embodiment of a seaming spiral described herein;

FIG. 15 is a schematic cross-sectional view of a sixth embodiment of a seaming spiral described herein;

fig. 16 is a schematic structural view of a connection pipe according to the present application.

The reference numbers indicate:

10. a mounting frame; 11. a frame body; 12. a connecting pipe; 20. sewing the spiral nail; 21. a base; 211. a transfer groove; 212. mounting grooves; 22. a locking member; 221. a switching part; 222. a limiting part; 223. a mating groove; 23. a rotational clearance; 24. a clamping gap; 241. a clamping section; 242. a gap section; 25. a transfer shaft; 26. a first through hole; 27. a spiral needle head; 30. an elastic member; 40. a pusher member; 41. a butting end; 42. threading holes; 43. a second through hole; 50. a traction member; 51. a clamping end; 60. sewing; 71. cutting off the parts; 72. and a locking element.

Detailed Description

The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other. The following discussion provides a number of embodiments of the application. While each embodiment represents a single combination of applications, the various embodiments of the disclosure may be substituted or combined in any combination, and thus, the disclosure is intended to include all possible combinations of the same and/or different embodiments of what is described. Thus, if one embodiment comprises A, B, C and another embodiment comprises a combination of B and D, then this application should also be considered to comprise an embodiment that comprises A, B, C, D in all other possible combinations, although this embodiment may not be explicitly recited in the text below. In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 15, the present application provides a stapler including: mounting bracket 10, suturing assembly, pusher member 40, retractor 50, and suture 60.

The mounting bracket 10 includes a bracket body 11 and a connecting pipe 12, the connecting pipe 12 includes a connecting end and a free end which are oppositely arranged, and the connecting end is connected with the bracket body 11.

The suturing component comprises a plurality of suturing spiral nails 20 released with small resistance, the plurality of suturing spiral nails 20 are sequentially arranged in the connecting pipe 12 in a stacking mode and are located at the free end, and the connecting pipe 12 can drive the suturing spiral nails 20 to rotate.

As shown in fig. 9 to 15, the sewing screw 20 includes: a base 21, two locking elements 22 and a screw spike 27.

One end of the base 21 is symmetrically provided with two switching grooves 211, and the base 21 is further provided with a first through hole 26 penetrating through the base.

Two locking pieces 22 are connected with base 21, and form joint clearance 24 between two locking pieces 22, and first through-hole 26 communicates with joint clearance 24, and joint clearance 24 is configured as cooperating with joint end 51 of pulling 50.

A screw needle 27 is fixed to the other end of the base 21. In addition, one end of the base 21 is provided with a mounting groove 212, and the mounting groove 212 is fixed at one end of the spiral needle 27, so that the mounting groove 212 plays a role in positioning, and the spiral needle 27 and the base 21 are conveniently assembled, thereby improving the assembly efficiency of the sewing spiral nail 20 and further improving the production efficiency of the sewing spiral nail 20.

The locking member 22 includes an adapter 221 and a stopper 222 connected to each other and rotatable in the adapter groove 211, and a rotation gap 23 is provided between the stopper 222 and the base 21. The rotational play 23 is provided to ensure that the locking member 22 can rotate relative to the base 21.

The pushing member 40 is disposed on the frame 11 and can move along the axial direction of the connecting tube 12, the abutting end 41 of the pushing member 40 is inserted into the connecting tube 12 and abuts against the sewing assembly, and the pushing member 40 has a second through hole 43 penetrating through it.

Draw piece 50 to set up on support body 11 to can follow the axial displacement of connecting pipe 12, draw the joint end 51 of piece 50 to pass in second through-hole 43 stretches into connecting pipe 12, and joint end 51 passes a plurality of spiral nail 20 of sewing up in proper order, and insert the joint clearance 24 of the spiral nail 20 of sewing up that is close to the free end setting and joint mutually with the spiral nail 20 of sewing up.

One end of the suture 60 sequentially passes through the first through holes 26 of the plurality of suturing screws 20 and is fixedly connected with the suturing screw 20 arranged adjacent to the free end, the other suturing screws 20 can slide on the suture 60, and the other end of the suture 60 passes through the connecting pipe 12.

After the suturing screw 20 is pulled out of the connecting tube 12, the catching end 51 is pulled out of the catching gap 24.

As shown in fig. 2 to 5, in the suturing device provided by the present application, the pushing member 40 pushes out the spiral needle 27 of the suturing spiral nail 20 from the connecting tube 12, and anchors the suturing spiral nail 20 at a corresponding position of a wound surface by rotating the mounting frame 10, then completely pushes out the suturing spiral nail 20 from the connecting tube 12, and pulls the traction member 50 with force, because of the pushing force of the pushing member 40, the suturing spiral nail 20 cannot move, the clamping end 51 moves in the clamping gap 24, and meanwhile, the clamping end 51 applies an acting force to the limiting portion 222 of the locking member 22 to the side, so that the two locking members 22 move back and forth through the switching portion 221, and thus the distance between the two locking members 22 is increased, and because the clamping gap 24 is increased, the clamping end 51 can be quickly and smoothly detached from the suturing spiral nail 20; through repetition above-mentioned operation, in sewing up a plurality of spiral nail 20 anchor to human tissue fast, rethread suture 60 tightens up a plurality of spiral nail 20 of sewing up, and a plurality of spiral nail 20 of sewing up drive the human tissue around the wound and sew up the wound, realized that the ware of sewing up once gets into and just can sew up the surface of a wound after the human body, improved the efficiency of sewing up the surface of a wound to the use comfort of product has been improved, and then increased the market competition of product. In addition, above-mentioned spiral nail sews up simple structure to reduce the complexity of sewing up the spiral nail, improved the production efficiency of sewing up the spiral nail, simultaneously because locking piece 22 can rotate for base member 21, make joint end 51 need not very big power just can deviate from in following joint clearance 24, further improved the use comfort of product.

In addition, after one suturing spiral nail 20 is pushed out of the connecting pipe 12, the locking piece 22 of the suturing spiral nail 20 loses the limiting effect of the connecting pipe 12 on the suturing spiral nail, so that the locking piece 22 can rotate relative to the base body 21, while the other suturing spiral nails 20 are positioned in the connecting pipe 12, and the locking pieces 22 of the other suturing spiral nails 20 cannot rotate relative to the base body 21, therefore, after the traction piece 50 releases the suturing spiral nail 20, the remaining suturing spiral nails 20 cannot be continuously dragged due to the inertia effect of the traction piece 50 to be released, so that each suturing spiral nail 20 of the suturing device is accurately and gradually released, the suturing precision of the suturing device is further ensured, and the market competitiveness of products is increased.

In one embodiment of the present application, as shown in fig. 16, the cross-sectional shape of the cavity of the connecting tube 12 is non-circular, such as a drop, an ellipse, a quadrilateral, etc., to name but a few examples.

In one embodiment of the present application, a limiting structure is disposed on an inner wall surface of the connecting pipe.

The sewing spiral nail is provided with an interference structure interfering with the limit structure.

After the spiral needle head of the suturing spiral nail is completely pushed out of the mounting tube by the pushing piece, the supporting frame is rotated by a user, and the supporting frame drives the suturing spiral nail to rotate due to the interference of the interference structure and the limiting structure, so that the spiral needle head is screwed into the human tissue at the corresponding position; the rotary sewing spiral nail is simple and convenient to operate, the use comfort of the product is guaranteed, and the market competitiveness of the product is further improved. The limiting structure and the interference structure are respectively of a convex structure and a groove structure.

As shown in fig. 6 and 7, in one embodiment of the present application, the suturing device further includes a cutting member 71 and a locking member 72, when the suturing screws 20 are fully anchored to the corresponding body tissue, the suture thread 60 is tightened to tighten the plurality of suturing screws 20, the plurality of suturing screws 20 carry the body tissue around the wound to wrap the wound, the suture thread 60 is then locked by the locking member 72 to prevent the suture thread 60 from moving, and then the suture thread 60 is cut by the cutting member 71, and the plurality of suturing screws 20 suture the wound of the body tissue due to the action of the locking member 72.

As shown in fig. 6, 7 and 8, in a specific embodiment of the present application, the abutting end 41 of the pushing element 40 is provided with a threading hole 42, the threading hole 42 is communicated with the second through hole 43, and the suture 60 penetrates into the second through hole 43 from the threading hole 42 and penetrates out of the pushing element 40 from the second through hole 43.

Several embodiments of the suturing screw are described in detail below with reference to the accompanying drawings.

Example one

As shown in fig. 9 and 10, in an embodiment of the present application, the adapting groove 211 is a circular arc groove, and the adapting portion 221 has a circular arc surface matching with the circular arc groove.

The arc surface makes the adapter 221 generally cylindrical, so that the adapter 221 can rotate more smoothly in the adapter groove 211, that is, the fit between the arc surface and the arc groove can ensure the smooth rotation of the adapter 221 in the adapter groove 211, thereby ensuring the rotation of the locking member 22 relative to the base 21.

As shown in fig. 9 and 10, in an embodiment of the present application, the clamping gap 24 includes a clamping section 241 and a gap section 242 which are communicated with each other, the clamping section 241 is disposed close to the base 21, and a distance between the two locking pieces 22 at the clamping section 241 is greater than a distance between the two locking pieces 22 at the gap section 242.

The joint end 51 of the traction piece 50 is positioned in the joint section 241 and is in joint with the locking piece 22, the traction piece 50 penetrates out of the gap section 242 to form the suture spiral nail 20, the joint limit of the traction piece 50 and the suture spiral nail 20 is ensured, in addition, the distance between the two locking pieces 22 at the joint section 241 is larger than the distance between the two locking pieces 22 at the gap section 242, a larger contact surface is ensured between the joint end 51 and the locking pieces 22, thereby ensuring that the joint end 51 and the two locking pieces 22 have enough clamping force, reducing the probability that the joint end 51 is separated from the two locking pieces 22, and further ensuring the use reliability of a product.

As shown in fig. 9 and 10, in one embodiment of the present application, the outer surface of the stopper portion 222 overlaps with the extension surface of the outer surface of the base body 21.

The surface of spacing portion 222 and the surface of base member 21 are located the coplanar, above-mentioned structure makes the shape of spacing portion 222 and the shape looks adaptation of base member 21 promptly, it is the biggest to guarantee the area of contact of spacing portion 222 and the inner wall of connecting pipe 12, thereby the limiting action of connecting pipe 12 to spacing portion 222 has been guaranteed fully, guaranteed promptly that joint end 51 is the joint in joint clearance 24 more steadily, the probability that joint end 51 breaks away from between two locking pieces 22 has been reduced, the use reliability of product has been guaranteed.

As shown in fig. 11, in one embodiment of the present application, the distance between the two locking pieces 22 becomes gradually smaller in the direction from the other end to the one end of the base body 21.

The structure ensures that the clamping end 51 is in inclined contact with the locking piece 22, and a larger contact surface is formed between the clamping end 51 and the locking piece 22, so that enough clamping force is ensured between the clamping end 51 and the two locking pieces 22, the probability that the clamping end 51 is separated from the two locking pieces 22 is reduced, and the use reliability of a product is further ensured. In addition, above-mentioned structure can make joint end 51 break away from sewing up the spiral nail 20 fast, and smoothly at the in-process that joint end 51 deviates from locking piece 22, has improved the use comfort of product, and then has increased the market competition of product.

As shown in fig. 12, in one embodiment of the present application, the two locking members 22 are provided with engaging grooves 223 on their surfaces facing each other, the engaging grooves 223 extending in a direction from one end to the other end of the base 21, and the engaging grooves 223 are configured to engage with the catching ends 51 of the pulling members 50.

The arrangement of the matching groove 223 ensures that a larger contact surface is formed between the clamping end 51 and the locking pieces 22, so that sufficient clamping force is ensured between the clamping end 51 and the two locking pieces 22, the probability that the clamping end 51 is separated from the two locking pieces 22 is reduced, and the use reliability of the product is further ensured.

In another embodiment of the present application, as shown in fig. 13, an elastic member 30 is provided between the locking member 22 and the base 21. The elastic member 30 is a spring. Specifically, when sewing spiral nail 20 is in connecting pipe 12, elastic component 30 supports between locking piece 22 and the base member 21, make two locking pieces 22 compress tightly traction piece 50, after sewing spiral nail 20 is released from connecting pipe 12, pull traction piece 50 with power, because the thrust effect of pushing piece 40 this moment, sewing spiral nail 20 can't move, joint end 51 moves in joint clearance 24, joint end 51 exerts the effort to the spacing portion 222 of locking piece 22 to side simultaneously, make two locking pieces 22 move back to back through switching portion 221, thereby make the distance between two locking pieces 22 grow, elastic component 30 power this moment, make joint end 51 from sewing spiral nail 20 on quick, and smoothly break away from, the use comfort of product has been improved, and then the market competition of product has been increased.

As shown in fig. 14, in one embodiment of the present application, an elastic member 30 is provided between the locking member 22 and the base 21. The elastic member 30 is a spring. Specifically, the elastic member 30 is in a force accumulation state when the sewing screw 20 is located in the connecting pipe 12, so that the two locking members 22 are respectively abutted against the inner wall of the connecting pipe 12, when the sewing screw 20 is pushed out from the connecting pipe 12, the two locking members 22 rotate relative to the base body 21 under the action of the elastic member 30, and the clamping end 51 is separated from the two locking members 22, so that the sewing screw 20 is quickly and smoothly separated from the sewing device, the use comfort of the product is improved, and the market competitiveness of the product is further increased.

As shown in fig. 9 to 14, in an embodiment of the present application, the adapter portion 221 and the limiting portion 222 are an integral structure.

On one hand, the connection strength between the adapter part 221 and the limiting part 222 is ensured, so that the probability of fracture between the adapter part 221 and the limiting part 222 is reduced, and the use reliability of the locking piece 22 is improved; on the other hand, the locking piece 22 is made by adopting an integral forming process, so that the production efficiency of the product is improved, the production and manufacturing cost of the product is reduced, and the market competitiveness of the product is improved.

Example two

As shown in fig. 15, the solution of the second embodiment is substantially the same as the solution of the first embodiment, and the differences are mainly that: the switching groove 211 is internally provided with a switching shaft 25, two ends of the switching shaft 25 are respectively fixedly connected with two side walls opposite to the switching groove 211, and the switching part 221 is rotatably connected with the switching shaft 25.

The structure is simple, the processing and the manufacturing are easy, and the assembly is convenient. And the rotation of the locking member 22 with respect to the base 21 can be effectively ensured, so that the catching end 51 is quickly and smoothly disengaged from the sewing screw 20.

In the description of the present application, it is noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it is to be noted that unless otherwise explicitly specified or limited.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. The term "plurality" means two or more unless expressly limited otherwise. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present application has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.

Claims (10)

1. A low resistance release suturing screw comprising:

the device comprises a base body, wherein two switching grooves are symmetrically arranged at one end of the base body, and a first through hole penetrating through the base body is also formed in the base body;

the two locking pieces are connected with the base body, a clamping gap is formed between the two locking pieces, the first through hole is communicated with the clamping gap, and the clamping gap is configured to be matched with a clamping end of a traction piece; and

the spiral needle head is fixed on the other end of the base body;

the locking piece comprises a switching part and a limiting part which are connected, each switching part is installed in one switching groove and can rotate in the switching groove, and a rotating gap is formed between the limiting part and the base body.

2. The low resistance release suturing screw according to claim 1,

the joint clearance is including the joint section and the clearance section that are linked together, the joint section is close to the base member sets up, two of joint section department distance between the locking piece is greater than two of clearance section department distance between the locking piece.

3. The low resistance release suturing screw according to claim 1,

the distance between the two locking pieces becomes gradually smaller in the direction from the other end of the base body to the one end.

4. The low resistance release suturing screw according to claim 3,

two be provided with the cooperation groove on the relative surperficial that sets up of locking piece respectively, the cooperation groove is followed the one end of base member extends to the direction of the other end, the cooperation groove is configured to hold the cooperation with the joint that draws the piece.

5. The low resistance release suturing screw according to claim 1,

the outer surface of the limiting part is overlapped with the extending surface of the outer surface of the base body.

6. The low resistance release suture spiral tack of any one of claims 1 to 5,

the switching groove is an arc groove, and the switching part is provided with an arc surface matched with the arc groove.

7. The low resistance release suture spiral tack of any one of claims 1 to 5,

the adapter is characterized in that an adapter shaft is arranged in the adapter groove, two ends of the adapter shaft are fixedly connected with two opposite side walls of the adapter groove respectively, and the adapter part is rotatably connected with the adapter shaft.

8. The low resistance release suturing screw according to any one of claims 1 to 5,

an elastic piece is arranged between the locking piece and the base body.

9. The low resistance release suturing screw according to any one of claims 1 to 5,

the switching portion and the limiting portion are of an integrated structure.

10. A stapler, characterized in that it comprises:

the mounting frame comprises a frame body and a connecting pipe, the connecting pipe comprises a connecting end and a free end which are oppositely arranged, and the connecting end is connected with the frame body;

a suturing assembly comprising a plurality of low resistance release suturing screws according to any one of claims 1 to 9, the plurality of suturing screws being disposed in a stack within the connecting tube at the free end, the connecting tube being capable of rotating the suturing screws;

the pushing piece is arranged on the frame body and can move along the axial direction of the connecting pipe, the abutting end of the pushing piece is inserted into the connecting pipe and is pressed against the sewing assembly, and the pushing piece is provided with a second through hole penetrating through the pushing piece;

the traction piece is arranged on the frame body and can move along the axial direction of the connecting pipe, the clamping end of the traction piece penetrates through the second through hole and extends into the connecting pipe, and the clamping end sequentially penetrates through the plurality of sewing spiral nails and is inserted into the clamping gap of the sewing spiral nail arranged close to the free end to be clamped with the sewing spiral nail; and

one end of the suture penetrates through the first through holes of the suture spiral nails in sequence and is fixedly connected with the suture spiral nails arranged near the free ends, other suture spiral nails can slide on the suture, and the other end of the suture penetrates out of the connecting pipe;

and after the suturing screw nail is separated from the connecting pipe, the clamping end is separated from the clamping gap.

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