CN-121265147-B - Suture threading device

CN121265147BCN 121265147 BCN121265147 BCN 121265147BCN-121265147-B

Abstract

The invention provides a suture threading device which comprises a handle, an extension rod and a clamp head, wherein the handle, the extension rod and the clamp head are sequentially arranged along the length direction, an opening and closing operation piece for controlling the clamp head to open and close is arranged on the handle, a movable joint is arranged between the extension rod and the clamp head, the clamp head is suitable for moving in any direction relative to the extension rod through the movable joint, and an angle operation piece for driving the movable joint and a locking operation piece capable of enabling the clamp head to keep a movable posture are arranged on the handle. The suture threading device can drive the movable joint through the angle operation piece, so that the clamp head can be switched to different angles according to different use scenes, flexible and convenient multi-angle adjustment capability is provided to adapt to different anatomical structures and operation routes, after the clamp head is adjusted to a proper angle, the movable joint is restrained through the locking operation piece, and stable clamp head posture in the whole threading process is ensured, so that the accuracy and safety of an operation are improved.

Inventors

HE JIYE
ZHANG ZIHAN
LIN XIANG
ZHANG LIANGZHI
Su Anning
LI XUEYANG
Ren Lucheng
GUO JIASHUO
SHI YUAN
Yu Enyu
Sun Lehui
LIU WENHUI
ZHU MOFEI
LI TAO
ZHU JUNFENG
LI ZUHAO
Cai Guiquan
JI YUN
ZHANG YUXIN
ZHENG LING

Assignees

上海交通大学医学院附属新华医院

Dates

Publication Date: 20260512
Application Date: 20251117

Claims (6)

1. The suture threading device comprises a handle (100), an extension rod (200) and a clamp head (300) which are sequentially arranged along the length direction, wherein an opening and closing operation piece (101) for controlling the clamp head (300) to open and close is arranged on the handle (100); The clamp head (300) is arranged to be suitable for moving in any direction relative to the extension rod (200) through the movable joint (201), an angle operation piece (102) for driving the movable joint (201) and a locking operation piece (103) for enabling the clamp head (300) to keep a posture are arranged on the handle (100); A steering engine (1021) is arranged on the inner side of the grip (100), and the angle operation piece (102) is a rocker; The extension rod (200) comprises a movable part (202) and a fixed part (203) which are arranged along the length direction, wherein the movable part (202) and the fixed part (203) are connected through the movable joint (201); The steering engine (1021) is connected with the movable part (202) through a plurality of inhaul cables (1022); The suture passing device further comprises a limit structure (1031), the limit structure (1031) comprises a limit ring (10312), the limit ring (10312) is movably connected to the inner side of the handle (100) along the length direction of the suture passing device, and the locking operation piece (103) is in driving connection with the limit ring (10312); the cable (1022) is provided with an inclined limiting part (10221), a limiting tooth two (10311) is arranged on the outer side of the inclined limiting part (10221), a limiting tooth one (10313) is arranged on the inner side of the limiting ring (10312), and the limiting ring (10312) is sleeved on the outer sides of the inclined limiting parts (10221) on the plurality of cables (1022); The two sides in the length direction of the suture thread passing device are respectively a locking side and an unlocking side, one side of the locking side of the first limit tooth (10313) is in locking fit with one side of the unlocking side of the second limit tooth (10311), and one side of the unlocking side of the first limit tooth (10313) is in sliding fit with one side of the locking side of the second limit tooth (10311).
2. Suture passing device according to claim 1, characterized in that the clip (300) comprises a hollow and threadable suture hook structure (301) and a hold-down structure (302) arranged from bottom to top; a hollow needle (3011) is arranged on the suture hook structure (301); The device is characterized in that a clamping direction (A) is arranged on the pressing structure (302), the pressing structure (302) comprises a shell (3021) which is arranged in the clamping direction (A) at intervals relatively, a wire feeding channel for the hollow needle (3011) to pass through is formed between opposite side surfaces of the shell (3021), a clamping piece (3022) capable of opening and closing the wire feeding channel of the hollow needle (3011) along the clamping direction (A) is arranged on the shell (3021), and the clamping piece (3022) is arranged to be suitable for being opened when the hollow needle (3011) passes through and to be closed when the hollow needle (3011) leaves.
3. Suture threading device according to the above claim 2, characterized in that the housing (3021) is hollow, the opposite side of the housing (3021) is provided with an opening, the clamping member (3022) is movably arranged in the housing (3021) along the clamping direction (a), and an elastic member is arranged between the clamping member (3022) and the housing (3021); the opposite side surface of the clamping piece (3022) is a clamping surface (30221), the side, close to the lower side, of the clamping surface (30221) is an inclined surface, the hollow needle (3011) can press the inclined surface to open the clamping piece (3022), and the clamping surface (30221) is an asymmetric clamping surface (30221) capable of being tightly attached.
4. Suture passing device according to claim 2, characterized in that the pushing structure (302) is hinged to one end of the extension rod (200) close to the clamp head (300), and an elastic reset element is arranged between the pushing structure (302) and the suture hook structure (301); An extrusion part (303) is sleeved on one side of the extension rod (200) close to the clamp head (300), and the extrusion part (303) is suitable for moving along the length direction of the extension rod (200); the folding operation piece (101) is a trigger, the folding operation piece (101) is connected with the extrusion piece (303) through a transmission rope (1011), the extension rod (200) is of a tubular structure, and the transmission rope (1011) and the suture line are movable and hidden at the inner side of the extension rod (200).
5. The suture passing device according to claim 1, wherein the number of the pull cables (1022) is 4, the number of the steering gears (1021) is two, each steering gear (1021) is reversely connected with two coaxially arranged reels (10211), the reels (10211) are connected with the pull cables (1022), the reels (10211) are in one-to-one correspondence with the pull cables (1022), and the pull cables (1022) on the same steering gear (1021) have equal lengths and are respectively connected with two radially opposite sides of the movable part (202); One steering engine (1021) is provided with a reel (10211) transversely arranged, the other steering engine (1021) is provided with a reel (10211) longitudinally arranged, the limiting rings (10312) are divided into transverse limiting rings (10312 a) and longitudinal limiting rings (10312 b), the transverse limiting rings (10312 a) correspond to the inhaul cables (1022) on the reel (10211) transversely arranged, and the longitudinal limiting rings (10312 b) correspond to the inhaul cables (1022) on the reel (10211) longitudinally arranged.
6. The suture passing device according to claim 1, wherein a ranging sensor (401) disposed opposite to the pull string (1022) is installed in the extension rod (200), a liquid crystal display (400) is disposed at the outer side of the grip (100), the liquid crystal display (400) is in communication connection with the ranging sensor (401), the liquid crystal display (400) is configured to display the moving distance of the pull string (1022) according to a signal fed back by the ranging sensor (401), and when the locking operation member (103) is pressed, the liquid crystal display (400) stops receiving the signal of the ranging sensor (401) and displays the locking state.

Description

Suture threading device Technical Field The invention relates to the technical field of suture passing devices, in particular to a suture passing device. Background In minimally invasive arthroscopic surgery, due to the narrow surgical space and limited angle of operation, how to efficiently and accurately pass a suture through rotator cuff tissue is one of the keys of surgical success, and a suture passer is an important surgical instrument, which functions to guide the suture under target tissue and complete the clamping and delivery. When dealing with complex anatomy structures, an operator often needs to prepare instruments with various angles or frequently adjust the access position, the complexity and time of the operation are increased, a bendable or movable joint-equipped wire passing device exists in the prior art, the adaptability of the movable joint in a complex access environment can be improved to a certain extent, but the movable joint design has the problem of unstable locking, and the angle retraction or deviation can occur when tissue resistance is received in the wire passing operation, so that the wire passing position is inaccurate, and the operation is failed; secondly, the angle adjustment operation of partial instruments is complicated, the operation of both hands of an operator is required, the continuity of the operation is interrupted, and the clinical requirement is difficult to meet. Therefore, in order to solve the above-mentioned problems, the present invention provides a suture thread passing device capable of achieving the adjustment of the head end angle and having good stability. Disclosure of Invention In order to solve the problems of the prior suture threading device, the invention provides a suture threading device. According to one object of the present invention, there is provided a suture thread passing apparatus, comprising a grip, an extension bar and a binding clip sequentially arranged in a length direction, wherein an opening and closing operation member for controlling the opening and closing of the binding clip is provided on the grip; A movable joint is arranged between the extension rod and the clamp head, the clamp head is arranged to be suitable for moving in any direction relative to the extension rod through the movable joint, the handle is provided with an angle operation piece for driving the movable joint and a locking operation piece capable of keeping the clamp head in a movable posture. Preferably, the clamp head comprises a hollow suture hook structure and a pressing structure which are arranged from bottom to top and can be threaded; the suture hook structure is provided with a hollow needle; The hollow needle feeding device is characterized in that a clamping direction is arranged on the pressing structure, the pressing structure comprises a shell which is arranged at intervals in the clamping direction, a feeding channel for the hollow needle to pass through is formed between opposite side surfaces of the shell, a clamping piece capable of opening and closing the feeding channel of the hollow needle along the clamping direction is arranged on the shell, and the clamping piece is suitable for being opened when the hollow needle passes through and closed when the hollow needle is separated. Preferably, the shell is hollow, an opening is formed in one side surface opposite to the shell, the clamping piece is movably arranged in the shell along the clamping direction, and an elastic piece is arranged between the clamping piece and the shell; The clamping piece is characterized in that one side surface opposite to the clamping piece is a clamping surface, one side, close to the lower side, of the clamping surface is obliquely arranged, the hollow needle can squeeze the inclined surface to open the clamping piece, and the clamping surface is an asymmetric clamping surface capable of being tightly attached. Preferably, the pressing structure is hinged to one end of the extension rod, which is close to the clamp head, and an elastic reset piece is arranged between the pressing structure and the suture hook structure; an extrusion part is sleeved on one side of the extension rod, which is close to the clamp head, and the extrusion part is arranged to move along the length direction of the extension rod; the operation piece that opens and shuts is the trigger, operation piece that opens and shuts passes through the driving rope and connects the extrusion piece, the extension rod is tubular structure, driving rope and suture line activity and hide in the inboard of extension rod. Preferably, a steering engine is arranged on the inner side of the grip, and the angle operation piece is a rocker for controlling and connecting the steering engine; The extension rod comprises a movable part and a fixed part which are arranged along the length direction, and the movable part is connected with the fixed part through the movable joint; The steering engine is con