CN-122004961-A - Simple multi-anchor device and endoscopic stitching assembly

Abstract

The application discloses a simple multi-anchor device and an endoscopic stitching assembly, wherein the simple multi-anchor device comprises an outer tube, a containing bin, at least two spiral nails, a control tube, a limiting tube and a limiting piece. The spiral nails are nested in sequence. The control tube is limited with the rotation of the screw nail. One end of the limiting pipe sequentially penetrates through the control pipe and the spiral nails, and the elastic limiting part on the limiting pipe is limited with the spiral nails. The limiting piece is positioned in the limiting pipe and can move relative to the limiting pipe. Through the cooperation spacing of control tube, spacing pipe and locating part, accurate and reliably implement screw in/bore and release of screw, show the accuracy and the uniformity of anchor operation under the promotion scope. In addition, from nail feeding, extending, rotary anchoring and automatic unlocking to releasing, the whole process can be completed through the axial movement of the control tube, the limiting tube and the limiting piece, and the operation is simple. Meanwhile, the screw nail is controlled to be screwed in/drilled in and released, and the screw nail has the advantages of few structural parts, compact structure and high reliability.

Inventors

• ZHANG QIANG

Assignees

• 张强

Dates

Publication Date

20260512

Application Date

20260317

Claims (20)

1. 1. A simple multi-anchor device, comprising: An outer tube; the accommodating bin is connected with the outer tube; The screw nails are nested and arranged in the accommodating bin, each screw nail comprises a base body and a puncture part, the base body is provided with a first rotation limiting part and a second rotation limiting part, and two adjacent screw nails are limited by the matched rotation phases of the first rotation limiting part and the second rotation limiting part; The control tube passes through the outer tube and is abutted against the substrate, and one end of the control tube is provided with a third rotation limiting part matched with the second rotation limiting part; the limiting tube comprises an elastic limiting part, the limiting tube penetrates through the control tube and the screw nails, the elastic limiting part is in limiting fit with the base body to limit the screw nails from being separated from the accommodating bin, and the screw nails are prevented from being separated from the accommodating bin The limiting piece is positioned in the limiting pipe and can move relative to the limiting pipe, and the limiting piece is configured to limit the elastic limiting part to move towards the inside of the limiting pipe.
2. 2. The simple multi-anchor apparatus of claim 1 wherein, One of the first rotation limiting part and the second rotation limiting part is of a concave structure, the other one is of a convex structure, and the convex structure is in limiting fit with the concave structure.
3. 3. The simple multi-anchor apparatus of claim 2 wherein, The concave structure is formed by recessing the end face of the base body, and the convex structure is formed by extending the end face of the base body.
4. 4. The simple multi-anchor apparatus as set forth in claim 3, wherein, The end face of the base body is sunken to form a notch, and a limiting groove is formed by the connection part of the puncture part and the base body and the notch.
5. 5. The simple multi-anchor apparatus of claim 2 wherein, The recess structure is formed by recessing a side wall surface of the base body.
6. 6. The simple multi-anchor apparatus of claim 1 wherein, In the length direction of the control tube, the length of the base body of the screw matched with the control tube is smaller than that of the base bodies of other screw.
7. 7. The simple multi-anchor apparatus of claim 1 wherein, The third rotation limiting part is of a concave structure or a convex structure.
8. 8. The simple multi-anchor apparatus as set forth in claim 7, wherein, The third rotation limiting part is of a multi-lobe protruding structure, and a plurality of protruding structures are symmetrically arranged.
9. 9. The simple multi-anchor apparatus of any one of claims 1-8, wherein the resilient stop portion of the stop tube comprises a resilient arm and a movement stop portion, the movement stop portion being located at the other end of the resilient arm.
10. 10. The simple multi-anchor apparatus as set forth in claim 9, wherein, The elastic arm is formed by integrally extending the pipe wall of the limiting pipe, and the movement limiting part is positioned at the free end of the elastic arm.
11. 11. The simple multi-anchor apparatus as set forth in claim 9, wherein, The movement limiting part is a limiting protrusion or limiting piece.
12. 12. The simple multi-anchor apparatus as set forth in claim 11, wherein, The surface of the movement limiting part matched with the base body is an inclined surface.
13. 13. The simple multi-anchor apparatus as set forth in claim 9, wherein, The pipe wall of the limiting pipe is provided with a forming hole penetrating the limiting pipe, and the elastic limiting part at least partially extends out of the forming hole.
14. 14. The simple multi-anchor apparatus as set forth in claim 13, wherein, The elastic limiting part and the hole wall of the forming hole are of an integrated structure.
15. 15. The simple multi-anchor apparatus of claim 1 wherein, The puncture part of one screw nail is sleeved on the peripheral surface of the base body of the adjacent screw nail.
16. 16. The simple multi-anchor apparatus according to any one of claims 1 to 8, wherein a wire-passing ring is provided on the base body, an annular groove is formed between the base body and the piercing portion, and the wire-passing ring is sleeved in the annular groove.
17. 17. The simple multi-anchor apparatus as set forth in claim 16, wherein, The outer side wall of the base body is provided with a boss at one end close to the puncture part, one end of the puncture part close to the base body is provided with a step, and the annular groove is formed between the boss and the step.
18. 18. The simple multi-anchor apparatus as set forth in claim 16, wherein, The wire loop is provided with a threading aperture configured for threading a suture therethrough.
19. 19. The simple multi-anchor apparatus as set forth in claim 18, wherein, The accommodating bin is provided with a notch extending along the length direction of the accommodating bin, and the cross section of the accommodating bin is at least partially C-shaped; the threading hole is at least partially positioned in the notch of the accommodating bin so as to limit the rotation of the threading ring in the accommodating bin.
20. 20. An endoscopic stitching device, comprising a housing, a pair of end caps, characterized by comprising the following steps: the simple multi-anchor apparatus as defined in any one of claims 1-19, and And the suture is in limit connection with the first screw far away from the outer tube, and the other screw can slide on the suture.

Description

Simple multi-anchor device and endoscopic stitching assembly Technical Field The application relates to the technical field of medical instruments for minimally invasive endoscopic surgery, in particular to a simple multi-anchor device and an endoscopic stitching assembly. Background Among the digestive tract defect closing devices, there is a soft endoscopic screw anchor suture device named X-Tack (Apollo Endosurgery production) abroad, which has remarkable advantages for closing difficult defects such as ulcers, edge swelling of defects, scar tissues and the like. However, the device is designed for a single release screw anchor, and the endoscope is repeatedly withdrawn to reinstall the screw anchor during operation, so that the operation efficiency is low. Meanwhile, the device is limited by intellectual property barriers and high medical cost, and is difficult to popularize and apply widely in China. Therefore, how to realize continuous and accurate release of the spiral anchor through structural design innovation so as to improve the operation efficiency, simplify the structure of the apparatus, reduce the cost of processing and clinical use, and promote the large-scale popularization of high-quality technology in China, and the method has become a key technical problem to be solved currently. Disclosure of Invention In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides the following technical solutions: In a first aspect, an embodiment of the application provides a simple multi-anchor device, which comprises an outer tube, a containing bin connected with the outer tube, at least two spiral nails nested in the containing bin, a limiting tube, and a limiting piece, wherein the spiral nails comprise a base body and a puncture part, the base body is provided with a first rotation limiting part and a second rotation limiting part, adjacent two spiral nails are limited by the rotation matching of the first rotation limiting part and the second rotation limiting part, the control tube passes through the outer tube and is abutted on the base body, one end of the control tube is provided with a third rotation limiting part matched with the second rotation limiting part, the limiting tube comprises an elastic limiting part, the limiting tube passes through the control tube and the spiral nails, the elastic limiting part is in limiting fit with the base body to limit the spiral nails to move out of the containing bin, and the limiting piece is located in the limiting tube and can move towards the inner limiting tube, and the limiting piece is configured to limit the limiting tube to move towards the limiting part. In some embodiments, one of the first rotation limiting portion and the second rotation limiting portion is a concave structure, and the other is a convex structure, and the convex structure is in limit fit with the concave structure. In some embodiments, the concave structures are formed by concave end surfaces of the substrate, and the convex structures are formed by extending end surfaces of the substrate. In some embodiments, the end surface of the base body is recessed to form a notch, and the portion, connected with the base body, of the piercing portion and the notch encloses a limit groove. In some embodiments, wherein the recess structure is recessed from a sidewall surface of the base. In some embodiments, the length of the base of the screw that engages the control tube is less than the length of the base of the other screws in the length direction of the control tube. In some embodiments, the third rotation limiter is a concave structure or a convex structure. In some embodiments, the third rotation limiting portion is a multi-lobe protrusion structure, and a plurality of protrusion structures are symmetrically arranged. In some embodiments, the elastic limiting portion of the limiting tube comprises an elastic arm and a movement limiting portion, one end of the elastic arm is connected with the limiting tube, and the movement limiting portion is located at the other end of the elastic arm. In some embodiments, the elastic arm is integrally formed by extending the pipe wall of the limiting pipe, and the movement limiting part is located at the free end of the elastic arm. In some embodiments, the movement limiter is a limit protrusion or limit tab. In some embodiments, a surface of the movement limiting portion, which is matched with the base body, is an inclined surface. In some embodiments, the wall of the limiting tube is provided with a forming hole penetrating the limiting tube, and the elastic limiting portion is at least partially located in the forming hole. In some embodiments, the elastic limiting portion and the hole wall of the forming hole are of an integrated structure. In some embodiments, the piercing portion of one screw may be sleeved on the outer circumferential surface of the base of the