CN117122362A - Soft endoscope stitching device - Google Patents

Abstract

The application provides a soft endoscope suture device, which comprises a handle piece, a soft pipeline and suture ends, wherein the handle piece and the suture ends are arranged at two ends of the soft pipeline, and the soft endoscope suture device comprises: a suture assembly mounted to the suture end for wound closure; a pushing part installed in the handle member, the pushing part being connected with the suture assembly through a traction guide wire for controlling the suture assembly to suture the wound, the traction guide wire passing through the soft pipe; a suture release portion mounted in the handle member, the suture release portion having mounted thereon a knotless barb suture connected to the suture assembly through the flexible conduit. According to the suture assembly, the suture needle with radian is controlled by the needle head sleeve or the needle tail sleeve to alternately control the circumferential movement around the rotating shaft, so that the suture needle can completely penetrate through wound tissues and reset, and the suture needle is used for intermittent or continuous suture to close the digestive tract wound, so that the operation is reduced, and the efficient and convenient suture operation can be realized.

Description

Soft endoscope stitching device

Technical Field

The application relates to the field of medical instruments, in particular to a soft endoscopic stitching device.

Background

Repair of fistulae, perforations and large area defects in the digestive tract remains a major difficulty in the current digestive endoscopy arts. Existing endoscopic suturing procedures include tissue Clip direct closure, tissue-and mucosal layer-to-layer closure, purse string suturing with tissue clips fitted with nylon strings, tissue Clip traction assisted closure with rubber bands, over-The-Scope-Clip (OTSC) systems, and some foreign suturing instruments (overstitch, eagle Clip), etc. However, the two types of medical devices cannot be tightly sutured, and the gastric tube is required to be assisted after operation and the gastrointestinal decompression is continuously performed for 5-7 days so as to avoid the wound surface from being torn again due to gastric distention, thus causing discomfort to the patient after operation and increasing hospitalization time and cost.

With the development of the digestive endoscope super minimally invasive surgery, compared with the surgery mode of curing diseases by surgical excision of organs, the super minimally invasive surgery can cure diseases under the condition of ensuring that the human anatomy is unchanged, the postoperative life quality of a patient is not affected, but the development of the surgical type is limited due to the defect of the sealing technology after the total endoscopic excision. Therefore, a suture technology similar to a surgical operation using a needle and a thread is sought, so that the wound surface can be tightly sutured after an endoscopic operation, the hospitalization time and the recovery time of a patient are further shortened, the comfort of the postoperative recovery period is improved, and the super minimally invasive operation is further developed.

In 2020, scholars such as Osamu Goto in japan successfully suture 29 cases of wound surfaces after gastric mucosa dissection surgery by using a needle and a thread, and the incision is tightly closed, so that adverse events do not occur. However, this clinical trial had the following problems: 1. the digestive endoscope is a soft endoscope, the pipeline is long, and the operation instrument is placed under the endoscope, so that the operation force and direction of the head end are difficult to control due to the conduction force, the operation sensitivity is poor, the operation difficulty of suturing under the endoscope is high, the control difficulty of the suturing strength is high, and the suturing of partial areas is difficult; 2. because of difficult operation, the technical requirements on the operation doctors are high, the operation can only be completed by advanced doctors, and primary doctors have long learning period and are difficult to popularize; 3. the double-hole endoscope is used for completion, which is not beneficial to popularization in primary hospitals. Based on the above drawbacks, there is an urgent need for a specialized soft endoscopic stitching device that uses a handle to control a suture needle to perform intermittent or continuous suturing to close a wound in the digestive tract, and that needs to reduce the operation difficulty, complete the operation under a single Kong Daona scope, and reduce the cost of the instrument, so as to be widely used in the field of super minimally invasive digestive endoscopic surgery in the later stage.

Disclosure of Invention

The application provides a soft endoscope suturing device which aims at the defects in the prior art and comprises a suture assembly, wherein a suture needle with radian is arranged in the suture assembly, the suture needle is arranged around a rotating shaft and rotates circumferentially along the rotating shaft, and tissue which passes through a wound is sutured in the process of rotating the suture needle; and the movement of the suture needle is controlled by the needle head sleeve or the needle tail sleeve, and the needle head sleeve or the needle tail sleeve is alternately fixed with the suture needle, so that the suture needle can completely penetrate through wound tissues and reset, and high-efficiency and convenient suture operation can be realized.

In order to solve the technical problems, the application solves the problem of difficult operation of closing the digestive tract wound by controlling the suture needle to perform intermittent or continuous suture by the handle in the background technology through the following technical scheme.

In order to achieve the above purpose, the present application adopts the following technical scheme:

the utility model provides a soft endoscope suturing device, includes handle piece, soft pipeline and suture end, handle piece and suture end are located soft pipeline both ends, include: a suture assembly mounted to the suture end for wound closure; a pushing part installed in the handle member, the pushing part being connected with the suture assembly through a traction guide wire for controlling the suture assembly to suture the wound, the traction guide wire passing through the soft pipe; a suture release portion mounted in the handle member, the suture release portion having mounted thereon a knotless barb suture connected to the suture assembly through the flexible conduit.

Preferably, the suture assembly comprises a suture needle, a needle cannula, a needle tail cannula; the suture needle, the needle head sleeve and the needle tail sleeve are all constructed to be of a bending structure, and the bending radian is the same; the needle head sleeve and the needle tail sleeve are arranged at the end part of the suture end head and are axially arranged, and the suture needle is arranged in the needle tail sleeve and can penetrate into the needle head sleeve through rotation.

Preferably, the middle part of the suture needle is provided with a threading hole, and one end of the knotting-free barb suture is connected with the suture needle through the threading hole.

Preferably, the outer circumferences of the two ends of the sewing needle are provided with annular grooves; elastic clamping pieces protruding inwards are arranged on the needle head sleeve and the needle tail sleeve, and penetrate into the annular grooves to connect and fix the suture needle with the needle head sleeve or the needle tail sleeve.

Preferably, the suture assembly comprises hoses which are respectively connected to the tail parts of the needle sleeve and the needle tail sleeve and are respectively communicated with each other, two pipelines are arranged in the suture end heads, and the hoses are arranged in the pipelines; the pipeline is provided with an elastic limiting part, and one end of the elastic limiting part penetrates into the hose.

Preferably, the suture assembly comprises a first elastic assembly connected with the traction guide wire, a first sliding groove is formed in the side edge of the pipeline, a connecting rod connected with the first elastic assembly through the first sliding groove is arranged in the pipeline, and the connecting rod is in contact with the elastic limiting piece.

Preferably, the suture assembly comprises two brackets, the two brackets are respectively connected with the suture needle and the needle head sleeve, the two brackets are respectively arranged on two rotary shafts connected end to end, the two rotary shafts are synchronously and reversely rotated, the rotary shafts are rotatably arranged on a supporting seat positioned at the end part of the suture end, and a coil spring connected with the rotary shafts is arranged on the supporting seat.

Preferably, the handle member is configured as a hollow shell, one end of the handle member is connected with the soft pipeline, the other end of the handle member is provided with two outlets, and the side edge of the handle member is provided with a suture inlet.

Preferably, the pushing part comprises a second elastic component and a pull ring, the second elastic component is arranged inside the handle piece, the pull ring is arranged outside the outlet, and the traction guide wire passes through the second elastic component to be connected with the pull ring.

Preferably, the knotting-free barbed suture is inserted into the handle member from the suture entrance and then threaded through the suture release portion and the flexible tubing to connect with the needle at the end of the suture.

Compared with the prior art, the application has the following beneficial effects:

the application provides a soft endoscope suturing device which comprises a suture assembly, wherein a suture needle with radian is arranged in the suture assembly, the suture needle is arranged around a rotating shaft and circumferentially rotates along the rotating shaft, and tissues penetrating through a wound are sutured in the process of rotating the suture needle; and the movement of the suture needle is controlled by the needle head sleeve or the needle tail sleeve, and the needle head sleeve or the needle tail sleeve is alternately fixed with the suture needle, so that the suture needle can completely penetrate through wound tissues and reset, and the suture needle is used for intermittent or continuous suture to close the digestive tract wound operation, so that the suture operation is reduced, and the high-efficiency and convenient suture operation can be realized.

According to the application, two pull rings connected with the traction guide wire are arranged at the handle part, the two pull rings are respectively used for controlling the needle head sleeve or the needle tail sleeve, the two pull rings are alternately operated to indirectly control the sewing and resetting of the sewing needle through the needle head sleeve or the needle tail sleeve, and the sewing difficulty is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present application;

FIG. 2 is a schematic top view of a suture end of the present application;

FIG. 3 is a schematic side cross-sectional view of a suture end and internal components of the present application;

FIG. 4 is a schematic view of a suture assembly according to the present application;

FIG. 5 is a schematic view of a hose and pipe according to the present application with a split structure in section;

FIG. 6 is a schematic view of the structure of the sewing needle of the present application;

FIG. 7 is a schematic view of a first elastic member according to the present application;

FIG. 8 is a cross-sectional view of a handle member and an internal structure of the present application.

Description of the figure: 1. a handle member; 11. an outlet; 12. a suture portal; 2. a flexible pipe; 3. a suture end; 4. a suture assembly; 41. stitching; 411. a threading hole; 412. an annular groove; 42. a needle cannula; 421. an elastic clamping piece; 43. a needle tail sleeve; 44. a hose; 45. a pipe; 451. a first chute; 452. a connecting rod; 46. an elastic limiting piece; 461. a soft rod; 462. a base; 463. a first spring; 47. a bracket; 48. a rotating shaft; 49. a support base; 410. a first elastic component; 4101. a spring tube; 4102. a second spring; 4103. a slide block; 4104. a second chute; 5. pulling the guide wire; 6. a pushing part; 61. a second elastic component; 62. a pull ring; 7. a suture release portion; 8. knotting-free barbed suture.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The following description is presented to enable one of ordinary skill in the art to practice the application. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the application defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the application.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present application.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Examples:

referring to fig. 1-3, the present application provides a soft endoscope suture device, which comprises a handle member 1, a soft tube 2 and a suture end 3, wherein two ends of the soft tube 2 are respectively connected with the handle member 1 and the suture end 3, a suture assembly 4 for wound suture is installed in the suture end 3, two traction guide wires 5 and a knotless barb suture 8 are penetrated inside the soft tube 2, a pushing part 6 and a suture releasing part 7 are installed in the handle member 1, the pushing part 6 and the suture assembly 4 are connected with the traction guide wires 5, the suture assembly 4 is controlled by the pushing part 6 to suture the wound, and the knotless barb suture 8 penetrates through the suture releasing part 7 and the soft tube 2 from the handle member 1 to be connected with a suture needle 41 of the suture assembly 4 at the suture end 3.

In the embodiment of the application, the suture assembly 4 comprises a suture needle 41, a needle head sleeve 42 and a needle tail sleeve 43, the suture end 3 is configured into a columnar tube body, one end of the suture end 3 is in a sealed state, two pipelines 45 penetrate from the interior of the suture end 3 against the inner wall, and the two pipelines 45 are positioned at two ends of one diameter, namely, are symmetrically distributed; at the ends of the two tubes 45 there are provided a needle cannula 42 and a needle tail cannula 43, respectively, the needle cannula 42 and the needle tail cannula 43 belonging to the outside exposed at the suture end 3, wherein the needle 41 is mounted on the needle tail cannula 43.

Preferably, the needle 41, the needle cannula 42 and the needle tail cannula 43 are all constructed in a curved configuration with the same curvature, and the needle 41, the needle cannula 42 and the needle tail cannula 43 are arranged on the same rotating circumference, i.e. the needle cannula 42 can be penetrated by rotating the needle 41.

Preferably, the middle part of the suture needle 41 is provided with a threading hole 411, and the knotting-free barb suture 8 is threaded on the threading hole 411 and is fixedly connected with the suture needle 41; both the head and tail ends of the needle 41 are provided with annular grooves 412, the inner diameters of the needle cannula 42 and the needle tail cannula 43 are the same as the diameter of the needle 41 and keep in sliding fit, elastic clamping pieces 421 protruding inwards are arranged in the needle cannula 42 and the needle tail cannula 43, and when the needle 41 is installed in the needle cannula 42 and the needle tail cannula 43, the elastic clamping pieces 421 can clamp the annular grooves 412 to fix the needle 41.

In the embodiment of the present application, the suture assembly 4 includes two brackets 47, two rotating shafts 48 and two supporting seats 49, the two rotating shafts 48 are connected end to end and are set to synchronously rotate reversely, one supporting seat 49 is installed at the end of each rotating shaft 48 to support the suture assembly, the two brackets 47 are respectively installed on the two rotating shafts 48, the rotating shafts 48 are connected with the supporting seats 49 in a rotating way, but coil springs connected with the rotating shafts 48 are arranged on the supporting seats 49, so that the rotating shafts 48 can have reverse reset pulling force when rotating, one bracket 47 is connected and fixed with the needle sleeve 42, and the other bracket 47 is connected and fixed with the needle sleeve 43, so that the suture needle 41, the needle sleeve 42 and the needle sleeve 43 can rotate around the rotating shafts 48.

Preferably, bevel gears are sleeved on both rotating shafts 48, and the two bevel gears are meshed with another bevel gear which is vertically arranged at the same time, so that the two rotating shafts 48 synchronously rotate reversely.

It should be noted that, the needle 41 is folded and set so that the suture end 3 can pass through the tissue by controlling the needle 41 to rotate when approaching the wound, and the needle sleeve 42 approaches the needle 41, after the needle 41 penetrates the needle sleeve 42, the needle 41 is connected with the needle sleeve 42, the needle tail sleeve 43 releases the needle 41 and separates from it, and then the needle sleeve 42 and the needle tail sleeve 43 are reset to complete the first needle; thereafter, the needle 41 is controlled again to rotate, the needle 41 is brought close to and penetrated into the needle-tail sleeve 43 to be connected, the needle sleeve 42 releases the needle 41 and is separated therefrom, and then the needle sleeve 42 is reset to the needle-tail sleeve 43, and the needle 41 is restored to the original state. Repeating the above operation will perform a second needle and subsequent suture operation.

In the embodiment of the present application, the suture assembly 4 includes a hose 44, an elastic limiting member 46, and a first elastic member 410, wherein two hoses 44 are provided and respectively installed at the tail ends of the needle cannula 42 and the needle cannula 43 and are communicated with each other, the hose 44 is identical to the inner diameter and the outer diameter of the needle cannula 42 and the needle cannula 43, only the length and the material are different, the hose 44 is arranged inside the pipe 45, the elastic limiting member 46 is arranged inside the pipe 45 and penetrates into the hose 44 mostly, two first elastic members 410 are arranged inside the suture end 3 in parallel, the first elastic members 410 are arranged in parallel with the pipe 45, and one traction guide wire 5 is connected to each first elastic member 410.

In the implementation process, the suture end 3 is vertically placed, the connecting rod 452 is arranged at the bottom end of the elastic limiting member 46 inside the pipeline 45, the first chute 451 is vertically arranged at one side of the pipeline 45 towards the elastic limiting member 46, one end of the connecting rod 452 penetrates out of the pipeline 45 from the first chute 451 and is connected with the first elastic assembly 410, the first elastic assembly 410 controls the vertical movement of the connecting rod 452, the connecting rod 452 pushes the hose 44 to penetrate out of the pipeline 45 through the elastic limiting member 46, namely, pushes the needle cannula 42 or the needle cannula 43 to move, and the needle cannula 42 and the needle cannula 43 move along a specific arc track due to the fact that the needle cannula 42 and the needle cannula 43 are pulled by the support 47.

Preferably, the elastic limiting member 46 is composed of a soft rod 461, a base 462 and a first spring 463, the soft rod 461 is located inside the soft tube 44, the base 462 is located at the bottom end of the soft tube 44 in a T-shaped structure and partially penetrates into the soft tube 44 to be fixed with the soft rod 461, and the first spring 463 is located at the outer periphery of the rod body of the base 462 and is in contact with the soft tube 44.

Preferably, the flexible stem 461 fills substantially the entire flexible tube 44 to avoid deformation after it passes out of the conduit 45.

Preferably, the first elastic component 410 is composed of a spring tube 4101, a second spring 4102 and a slider 4103, wherein a second sliding groove 4104 is vertically formed on one side of the spring tube 4101 facing the pipeline 45, the slider 4103 is slidably arranged in the spring tube 4101, the second spring 4102 is arranged at the upper end of the slider 4103 and is connected with the top of the spring tube 4101, the connecting rod 452 penetrates into the spring tube 4101 from the second sliding groove 4104 and is connected and fixed with the slider 4103, the traction guide wire 5 penetrates into the spring tube 4101 from the bottom, and the traction guide wire 5 penetrates through the slider 4103 in the spring tube 4101 and is reversely connected and fixed with the slider 4103 at a fixed ring bypassing the top of the spring tube 4101.

In the above, by pulling the guide wire 5, the slider 4103 moves upward, compresses the second spring 4102, and after releasing the pulling force, the slider 4103 is restored under the action of the second spring 4102. In addition, the slider 4103 pushes the elastic limiting member 46 to move upwards through the connecting rod 452, and the elastic limiting member 46 also pushes the flexible tube 44 to move upwards and uniformly penetrate the pipe 45, so that the needle cannula 42 or the needle tail cannula 43 rotates around the rotating shaft 48, and the operation of the sewing needle 41 is controlled.

In the above, the link 452 and the slider 4103 are returned by the second spring 4102, and the elastic stopper 46, the hose 44, and the needle sheath 42 or the needle sheath 43 are returned by the coil spring.

When the first needle is sewn, the elastic limiting piece 46 is utilized to push the needle tail sleeve 43 and the sewing needle 41 to move, and the needle head sleeve 42 is controlled to approach the sewing needle 41 under the driving of the rotating shaft 48; when the end of the needle 41 penetrates into the needle sleeve 42, the elastic clamping piece 421 of the needle sleeve 42 is clamped in the head annular groove 412 of the needle 41, the needle sleeve 42 and the needle tail sleeve 43 are in a static state when the continuous control slider 4103 moves upwards, the connecting rod 452 pushes the base 462 to penetrate into the hose 44 upwards, the soft rod 461 penetrates into the needle tail sleeve 43 to jack up the elastic clamping piece 421 of the needle tail sleeve 43, at the moment, the needle tail sleeve 43 cannot be clamped and fixed with the needle 41, after the thrust to the elastic limiting piece 46 is removed, the rotating shaft 48 is reversely reset by virtue of the thrust of the coil spring and the needle sleeve 43, and the needle 41 is taken away by the needle sleeve 42, so that the first needle is sewn. In addition, the elastic stopper 46 is restored by the first spring 463, and the elastic catch 421 of the needle hub 43 is restored.

The needle 41 is reset, the elastic limiting piece 46 is used for pushing the needle head sleeve 42 and the needle 41 to move, and the needle tail sleeve 43 is controlled to approach the needle 41 under the driving of the rotating shaft 48; when the tail of the needle 41 penetrates into the needle tail sleeve 43, the elastic clamping piece 421 of the needle sleeve 42 is clamped in the tail annular groove 412 of the needle 41, the needle sleeve 42 and the needle tail sleeve 43 are in a static state when the continuous control slider 4103 moves upwards, the connecting rod 452 pushes the base 462 to penetrate into the hose 44 upwards, the soft rod 461 penetrates into the needle head sleeve 42 to jack up the elastic clamping piece 421 of the needle sleeve 42, at the moment, the needle sleeve 42 cannot be clamped and fixed with the needle 41, after the thrust to the elastic limiting piece 46 is removed, the rotating shaft 48 is reversely reset by virtue of the thrust of the coil spring, the needle sleeve 43 and the needle sleeve 42, and the needle 41 is taken away by the needle sleeve 42, namely the needle 41 is restored to an initial state. In addition, the elastic stopper 46 is restored by the first spring 463, and the elastic catch 421 of the needle cannula 42 is restored.

The step of suturing the first needle is repeated while suturing the second needle, and the suturing needle 41 is controlled to be reset each time. The suturing of the wound is thus repeated.

In the embodiment of the application, the handle piece 1 is constructed as a hollow shell, one end of the handle piece 1 is connected with the soft pipeline 2, the other end is provided with two outlets 11, and the side edge of the handle piece 1 is provided with a suture inlet 12.

Preferably, the handle member 1 is internally provided with two second elastic members 61 and a suture release member 7, each second elastic member 61 being passed through a traction guide wire 5, the traction guide wire 5 being passed through the interior of the handle member 1 from the outlet 11 and being connected to the slider 4103 of the first elastic member 410 via the second elastic member 61 and the flexible tube 2 and in the suture end 3, the end of the traction guide wire 5 being connected with a pull ring 62, the pull ring 62 being a solid point, the needle 41 being operated by manual control of the pull ring 62. And two pull rings 62, one for controlling the needle 41 to pass through the tissue and one for controlling the needle 41 to reset; the wound-suturing operation is performed by engaging tab 62.

Preferably, the knotting-free barbed suture 8 is passed through the suture release portion 7, and the knotting-free barbed suture 8 is connected to the needle 41 at the suture end 3 by passing through the suture release portion 7 and the flexible tubing 2 after entering the handle member 1 through the suture entrance 12. According to the application, the suture release part 7 is penetrated by the knotting-free barb suture 8 and is in friction fit, so that the knotting-free barb suture 8 is in a tensioning state at the suture release part 7 by the suture needle 41, the knotting-free barb suture 8 is pulled by the suture needle 41, and the knotting-free barb suture 8 is slowly released, so that each suture can be in a tensioning state.

In some embodiments, the suture releasing part 7 can be connected with the traction guide wire 5 and can be controlled to synchronously and reversely move, the suture releasing part 7 is pushed away by a mechanical pencil, and each time the traction guide wire 5 is pulled, the suture releasing part 7 can synchronously and automatically contain the knotted barb suture 8 at one end.

It will be appreciated by persons skilled in the art that the embodiments of the application described above and shown in the drawings are by way of example only and are not limiting. The objects of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the examples and embodiments of the application may be modified or practiced without departing from the principles described.

Claims (10)

1. The utility model provides a soft endoscope suturing device, includes handle piece (1), soft pipeline (2) and suture end (3), handle piece (1) and suture end (3) are located soft pipeline (2) both ends, its characterized in that includes:

a suture assembly (4) mounted to the suture end (3) for wound closure;

a pushing part (6) installed in the handle piece (1), wherein the pushing part (6) is connected with the suture assembly (4) through a traction guide wire (5) for controlling the suture assembly (4) to suture the wound, and the traction guide wire (5) passes through the soft pipeline (2);

a suture release portion (7) mounted in the handle member (1), the suture release portion (7) being mounted with a knotless barb suture (8) connected to the suture assembly (4) through the flexible conduit (2).

2. A soft endoscopic stitching device according to claim 1, wherein: the suture assembly (4) comprises a suture needle (41), a needle head sleeve (42) and a needle tail sleeve (43);

the suture needle (41), the needle head sleeve (42) and the needle tail sleeve (43) are all of a bending structure, and the bending radian is the same; the needle sleeve (42) and the needle tail sleeve (43) are arranged at the end part of the suture end head (3) and are axially arranged, and the suture needle (41) is arranged in the needle tail sleeve (43) and can penetrate into the needle sleeve (42) through rotation.

3. A soft endoscopic stitching device according to claim 2, wherein: the middle part of the suture needle (41) is provided with a threading hole (411), and one end of the knotting-free barb suture (8) passes through the threading hole (411) to be connected with the suture needle (41).

4. A soft endoscopic stitching device according to claim 3, wherein: the peripheries of the two ends of the sewing needle (41) are provided with annular grooves (412);

elastic clamping pieces (421) protruding inwards are arranged on the needle head sleeve (42) and the needle tail sleeve (43), and the elastic clamping pieces (421) penetrate into the annular groove (412) to connect and fix the suture needle (41) with the needle head sleeve (42) or the needle tail sleeve (43).

5. The soft endoscopic stitching device according to claim 4, wherein: the suture assembly (4) comprises hoses (44) which are respectively connected to the tail parts of the needle sleeve (42) and the needle tail sleeve (43) and are respectively communicated with each other, two pipelines (45) are arranged in the suture end (3), and the hoses (44) are arranged in the pipelines (45);

the pipeline (45) is provided with an elastic limiting piece (46), and one end of the elastic limiting piece (46) penetrates into the hose (44).

6. The soft endoscopic stitching device according to claim 5, wherein: the suture assembly (4) comprises a first elastic assembly (410) connected with a traction guide wire (5), a first chute (451) is formed in the side edge of the pipeline (45), a connecting rod (452) connected with the first elastic assembly (410) through the first chute (451) is arranged in the pipeline (45), and the connecting rod (452) is in contact with the elastic limiting piece (46).

7. The soft endoscopic stitching device according to claim 6, wherein: the suture assembly (4) comprises two supports (47), the two supports (47) are respectively connected with a suture needle (41) and a needle head sleeve (42), the two supports (47) are respectively arranged on two rotary shafts (48) which are connected in an ending mode, the two rotary shafts (48) are synchronously rotated in the opposite direction, the rotary shafts (48) are rotatably arranged on a supporting seat (49) positioned at the end portion of the suture end (3), and coil springs connected with the rotary shafts (48) are arranged on the supporting seat (49).

8. The soft endoscopic stitching device according to claim 7, wherein: the handle piece (1) is constructed as a hollow shell, one end of the handle piece (1) is connected with the soft pipeline (2), two outlets (11) are formed in the other end of the handle piece, and a suture inlet (12) is formed in the side edge of the handle piece (1).

9. The soft endoscopic stitching device according to claim 8, wherein: the pushing part (6) comprises a second elastic component (61) and a pull ring (62), the second elastic component (61) is arranged inside the handle piece (1), the pull ring (62) is arranged outside the outlet (11), and the traction guide wire (5) passes through the second elastic component (61) to be connected with the pull ring (62).

10. A soft endoscopic stitching device according to claim 9, wherein: the knotting-free barb suture (8) is connected with a suture needle (41) at the suture end (3) by the suture inlet (12) after penetrating through the suture release part (7) and the soft pipeline (2) after passing through the handle piece (1).