A channel catheter-assisted large wound suture system for a single-channel endoscope

Abstract

The present invention relates to a channel catheter-assisted large wound suturing system for a single-channel endoscope, which belongs to the field of medical devices and solves the problem of difficulty in achieving large wound suturing with a single-channel endoscope. The auxiliary suturing system of the present invention comprises: a suturing device and an auxiliary channel tube; the auxiliary channel tube is attached to the outside of the endoscope catheter to form a double-channel with the endoscope channel; the suturing device comprises: a guide wire, an outer sleeve, a suture and a suture nail; the end of the outer sleeve is provided with an internal thread; the suture nail can be screwed with the internal thread; a plurality of suture nails are provided, and the plurality of suture nails are nested with each other and rotate synchronously; a driving boss is provided at the end of the guide wire, and the suture nail can be driven to rotate when the guide wire rotates; a screw-on portion is provided at the end of the suture nail, and when the suture nail rotates, the screw-on portion can be screwed into the tissue to be sutured; the suture thread connects a plurality of suture nails in series. The present invention realizes the formation of a double channel by connecting the auxiliary catheters in parallel on the outside of the endoscope catheter, and realizes the use effect of the double-channel with a low price.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, to a channel catheter-assisted large wound suture system for a single-channel endoscope. Background Art

[0002] For the treatment of diseases such as gastric ulcer, gastric perforation, and wound suture after tumor resection, it is necessary to suture the gastric wound. Using an endoscope for gastric surgery is a common surgical mode. The endoscope is inserted into the patient's stomach, which can conveniently observe the damaged condition of the patient's stomach, and surgical equipment can be inserted into the internal channel of the endoscope for suture. It is a treatment method with good surgical effects and relatively fast postoperative recovery.

[0003] For the closure of larger wounds, it is difficult to operate with a single-channel endoscope. Currently, the method of using a double-channel endoscope in cooperation with metal clips and nylon ropes for large wound suture is a conventional operation method. However, double-channel endoscopes are expensive, and the medical device equipment in many primary hospitals is insufficient, which leads to limited operation for doctors during surgery. At the same time, due to the size limitation of metal clips, it is difficult to achieve clamping and closure for larger wounds. Therefore, a new auxiliary suture instrument is needed to tighten the large wound first and then perform suture.

[0004] Based on this, it is necessary to provide a channel catheter-assisted large wound suture system for a single-channel endoscope, which can be used in combination with a single-channel gastroscope / colonoscope to achieve the effect of double-channel operation and large wound closure. Summary of the Invention

[0005] In view of the above analysis, the present invention aims to provide a channel catheter-assisted large wound suture system for a single-channel endoscope to solve the problem of difficult operation of large wound suture with an existing single-channel endoscope.

[0006] The object of the present invention is mainly achieved by the following technical solutions:

[0007] A channel catheter-assisted large wound suture system for a single-channel endoscope includes: a suture device and an auxiliary channel tube; the auxiliary channel tube can be attached to the outside of the endoscope catheter, and its internal channel can form a double-channel in parallel with the endoscope channel; the suture device can be inserted into the internal channel of the auxiliary channel tube / endoscope catheter;

[0008] The suture device includes: a guide wire, an outer sleeve, a suture thread, and suture staples; the suture staples are arranged inside the outer sleeve and can be screwed with the end of the outer sleeve in a threaded manner; there are multiple suture staples, and the multiple suture staples are nested and installed with each other from top to bottom and can rotate synchronously; the guide wire can be inserted into the inside of the outer sleeve, and a driving boss is arranged at the end of the guide wire; the driving boss can be engaged with the uppermost suture staple, and when the guide wire rotates, it can drive the suture staple to rotate; a screwing part is arranged at the end of the suture staple, and when the suture staple rotates, the screwing part can be screwed into the tissue to be sutured; the suture thread serially connects multiple suture staples in sequence.

[0009] Further, the auxiliary channel tube includes: a connecting tube, an auxiliary tube, and a transparent cap; the connecting tube and the transparent cap are respectively fixedly installed at both ends of the auxiliary tube.

[0010] Further, the auxiliary tube includes: an arc-shaped housing and a guiding tube; the arc-shaped housing surrounds the outside of the guiding tube, and the two are an integral structure; an adsorption colloid is filled between the arc-shaped housing and the guiding tube; the adsorption colloid is a viscous material and can be adsorbed and connected to the side surface of the endoscope catheter; the transparent cap covers the end of the endoscope catheter.

[0011] Further, a circular card slot capable of being engaged with the endoscope catheter is provided on the transparent cap; a first catheter opening and a second catheter opening are also provided on the transparent cap; the first catheter opening is aligned with the single forceps channel of the endoscope catheter, and the second catheter opening is communicated with the guiding tube.

[0012] Further, the suture staple includes: an upper sleeve, a screwing connection part, an engaging part, and a screwing part; the upper sleeve, the screwing connection part, the engaging part, and the screwing part are arranged in sequence from top to bottom and are an integral structure; an external thread is provided on the outer surface of the screwing connection part, and the external thread can be screwed with the internal thread of the outer sleeve.

[0013] Further, there are four suture staples, namely: a first suture staple, a second suture staple, a third suture staple, and a fourth suture staple.

[0014] Further, the screwing part is a spiral structure.

[0015] Further, a sleeve inner cavity is provided inside the upper sleeve, and a engaging groove is arranged on the side wall of the sleeve inner cavity; multiple engaging ridges are provided on the outside of the engaging part; the engaging part can be inserted into the sleeve inner cavity; the engaging ridges can be engaged with the engaging groove, so that two adjacent suture staples up and down are mutually engaged and rotate synchronously.

[0016] Further, a first driving convex rib is provided on the outer side of the driving boss, and the driving boss and the first driving convex rib can be respectively engaged into the inner cavity of the sleeve and the engaging groove.

[0017] Further, a wire threading hole is provided on the screwing part, and the suture thread is threaded into the suture thread.

[0018] Further, the suture device further includes an indicating component; the indicating component is arranged at the end of the outer sleeve, and when the guide wire rotates, the number of rotation turns can be displayed through the indicating component.

[0019] The technical solution of the present invention can at least achieve one of the following effects:

[0020] 1. For the large wound suture system assisted by the channel catheter for single-channel endoscope of the present invention, the auxiliary channel tube pastes the guiding tube on the side of the endoscope catheter through the adsorption colloid. After the auxiliary tube is connected to the endoscope catheter, the two form two juxtaposed channels, realizing the use effect of replacing the double-channel endoscope. The auxiliary tube can move along with the movement of the catheter of the single-channel endoscope, and at the same time has the advantages of simple structure, low cost, economy and practicality. For grass-roots units with insufficient funds to equip double-channel endoscopes, they can be equipped in batches to assist doctors in completing surgical operations.

[0021] 2. For the large wound suture system assisted by the channel catheter for single-channel endoscope of the present invention, the auxiliary channel tube and the endoscope catheter are used to form a double-channel by fitting. During use, one of the channels can be used to install suturing staples to tighten the wound surface, and at the same time, the other channel can be used to install titanium clips to clamp and close the contracted wound surface, improving the surgical efficiency and closing quality.

[0022] 3. For the large wound suture system assisted by the channel catheter for single-channel endoscope of the present invention, the suture device realizes the synchronous rotation of multiple suturing staples by arranging multiple suturing staples to be sequentially engaged. The synchronous rotation of multiple suturing staples can be driven by the engagement between the guide wire and the uppermost suture staple. During the rotation of the suturing staples, the state of non-rotation connection, rotation engagement, and rotation out with the outer sleeve can be gradually realized, and at the same time, the rotation of the suturing staples can screw the screwing part into the human tissue; multiple suturing staples are sequentially screwed into the tissue to be sutured, and the contraction of the wound surface is realized by tightening the suture thread, and then the large wound surface can be contracted into a small wound surface that can be sutured by a conventional method, which is convenient for subsequent suturing operations.

[0023] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can be made obvious from the description, or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the content specifically pointed out in the description and the drawings. Description of the Drawings

[0024] The accompanying drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference signs denote the same components.

[0025] Figure 1 It is a schematic structural diagram of the auxiliary channel catheter of the auxiliary channel catheter-assisted large wound suture system for a single-channel endoscope of the present invention;

[0026] Figure 2 It is a partial enlarged view of the connection end of the auxiliary channel catheter of the present invention;

[0027] Figure 3 It is a partial enlarged view of the transparent cap end of the auxiliary channel catheter of the present invention;

[0028] Figure 4 It is a sectional effect diagram of the auxiliary channel catheter of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the transparent cap of the auxiliary channel catheter of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the suture device of the single-channel endoscope channel catheter-assisted large wound suture system according to Embodiment 1 of the present invention;

[0031] Figure 7 It is a schematic internal structure diagram of the suture device according to Embodiment 1 of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the suture staple of the suture device according to Embodiment 1 of the present invention;

[0033] Figure 9 It is a schematic diagram of the arrangement state of multiple suture staples according to Embodiment 1 of the present invention;

[0034] Figure 10 It is a schematic diagram of the fitting state of multiple suture staples according to Embodiment 1 of the present invention;

[0035] Figure 11 It is a schematic diagram of the separated state of the guide wire and the suture staple according to Embodiment 1 of the present invention;

[0036] Figure 12 It is a schematic diagram of the separated state of the guide wire and the suture staple assembly according to Embodiment 1 of the present invention;

[0037] Figure 13 It is a schematic diagram of the fitting state of the guide wire and the suture staple assembly according to Embodiment 1 of the present invention;

[0038] Figure 14 It is a schematic structural diagram of the outer sleeve tube according to Embodiment 1 of the present invention;

[0039] Figure 15 Schematic structural diagram of the guide wire according to Embodiment 1 of the present invention;

[0040] Figure 16 Schematic diagram of the state (partial structure) of the guide wire inserted into the outer sleeve according to Embodiment 1 of the present invention

[0041] Figure 17 Schematic diagram of the mating state of the driving convex ring and the driving gear on the guide wire according to Embodiment 1 of the present invention;

[0042] Figure 18 Schematic diagram of the internal structure of the indicating component according to Embodiment 1 of the present invention;

[0043] Figure 19 Schematic diagram of the structures of the scale disk and the positioning disk according to Embodiment 1 of the present invention;

[0044] Figure 20 Schematic diagram of the state of the staple wire connection when the wire threading hole is located in the middle of the staple according to Embodiment 1 of the present invention;

[0045] Figure 21 Schematic diagram of the structure of the staple according to Embodiment 2 of the present invention Figure One ;

[0046] Figure 22 Schematic diagram of the structure of the staple according to Embodiment 2 of the present invention Figure Two ;

[0047] Figure 23 Schematic diagram of the structure of the wire clamping device according to Embodiment 3 of the present invention;

[0048] Figure 24 Schematic diagram of the internal structure of the wire clamping device according to Embodiment 3 of the present invention.

[0049] Reference numerals:

[0050] 1 - guide wire; 2 - outer sleeve; 3 - suture; 4 - staple; 5 - indicating component; 6 - wire clamping device; 7 - auxiliary channel tube;

[0051] 101 - guide wire body; 102 - driving boss; 103 - first driving rib; 104 - guide wire handle; 105 - driving convex ring; 106 - second driving rib;

[0052] 201 - internal thread; 202 - sleeve handle;

[0053] 401 - upper sleeve; 402 - screwing part; 403 - engaging part; 404 - screwing part; 405 - wire threading hole; 406 - sleeve inner cavity; 407 - engaging groove; 408 - external thread; 409 - engaging rib; 410 - wire clamping groove; 4101 - longitudinal wire groove; 4102 - arc wire groove;

[0054] 501 - Dial; 502 - Indicator panel; 5021 - Upper cover plate; 5022 - Internal gear ring; 503 - Positioning disk; 504 - Driving gear; 505 - Positioning gear; 506 - Convex ring engaging hole; 507 - Driving groove; 508 - Indication mark; 509 - Wire guiding hole.

[0055] 601 - Limiting conical ring; 602 - Linear slotted opening.

[0056] 71 - Connecting pipe; 72 - Auxiliary pipe; 73 - Transparent cap; 711 - Threaded connection section; 721 - Arc-shaped outer shell; 722 - Guiding pipe; 723 - Adsorption colloid; 731 - Circular card slot; 732 - First conduit opening; 733 - Second conduit opening. Detailed implementation manner

[0057] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings. The accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0058] Embodiment 1

[0059] As Figures 1 - 24 shown, the channel catheter-assisted large wound suture system for a single-channel endoscope in this embodiment includes: a suture device and an auxiliary channel tube 7; the auxiliary channel tube 7 can be attached to the outside of the endoscope catheter, and its internal channel can form a double-channel in parallel with the endoscope channel; the suture device can extend into the internal channel of the auxiliary channel tube 7 / endoscope catheter.

[0060] As Figure 6 , Figure 7 , Figure 9 , Figure 10 shown, the suture device includes: a guide wire 1, an outer sleeve 2, a suture thread 3, and a suture staple 4; an internal thread 201 is provided at the end of the outer sleeve 2; the suture staple 4 is arranged inside the outer sleeve 2 and can be screwed with the internal thread 201; a plurality of suture staples 4 are provided, and the plurality of suture staples 4 are nested and installed with each other from top to bottom and can rotate synchronously.

[0061] As Figure 11 , Figure 12 , Figure 13 shown, the guide wire 1 can be inserted into the inside of the outer sleeve 2, and a driving boss 102 is provided at the end of the guide wire 1; the driving boss 102 can be engaged with the uppermost suture staple 4, and when the guide wire 1 rotates, it can drive the suture staple 4 to rotate; a screwing part 404 is provided at the end of the suture staple 4, and when the suture staple 4 rotates, the screwing part 404 can be screwed into the tissue to be sutured; the suture thread 3 sequentially connects a plurality of suture staples 4.

[0062] In a specific embodiment of the present invention, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 shown, the auxiliary channel tube 7 includes: a connecting tube 71, an auxiliary tube 72, and a transparent cap 73. Specifically, the connecting tube 71 and the transparent cap 73 are respectively arranged at both ends of the auxiliary tube 72, and are both fixed integrally with the auxiliary tube 72; preferably, the connecting tube 71, the auxiliary tube 72, and the transparent cap 73 are fixed by bonding or integrally formed.

[0063] Specifically, as Figure 4 shown, the auxiliary tube 72 includes: an arc-shaped outer shell 721, a guiding tube 722, and an adsorption colloid 723; the arc-shaped outer shell 721 surrounds the outside of the guiding tube 722, and the two are of an integral structure; an adsorption colloid 723 is filled between the arc-shaped outer shell 721 and the guiding tube 722; the adsorption colloid 723 is a viscous material and can be adsorbed and connected to the side surface of the endoscope catheter. When the adsorption colloid 723 is adsorbed and connected to the endoscope catheter, the guiding tube 722 is juxtaposed with the single forceps channel of the endoscope catheter at 180°, and the edge of the arc-shaped outer shell 721 can be attached to the surface of the endoscope catheter. The guiding tube 722 is a circular tube and is used as a juxtaposed forceps channel of the single forceps channel of the endoscope catheter.

[0064] Specifically, as Figure 5 shown, the transparent cap 73 is provided with a circular card slot 731 that can be engaged with the endoscope catheter; after the endoscope catheter is engaged with the circular card slot 731, the ends of the endoscope catheter and the auxiliary channel catheter are connected.

[0065] Specifically, the transparent cap 73 is further provided with a first catheter opening 732 and a second catheter opening 733; the first catheter opening 732 is aligned with the single forceps channel of the endoscope catheter, and the second catheter opening 733 is communicated with the guiding tube 722; thus, the single forceps channel of the endoscope catheter and the guiding tube 722 of the auxiliary channel catheter can be used as a double forceps channel.

[0066] As Figure 2 shown, the end of the connecting tube 71 is provided with a threaded connection section 711, and can be threadedly connected with a medical three-way tube through the threaded connection section 711. After the medical three-way tube is connected to the auxiliary channel catheter, its multiple channel tubes can be used as a water injection tube, a suction tube, and a guide wire penetration tube respectively.

[0067] In a specific embodiment of the present invention, the inner diameter of the guiding tube 722 is the same as the inner diameter of the single forceps channel of the endoscope catheter. Preferably, the inner diameter of the guiding tube 722 of the auxiliary channel catheter is 2.8 mm.

[0068] Further, as Figure 4 shown, the arc-shaped outer shell 721 is a C-shaped structure; the C-shaped arc-shaped outer shell 721 is in a semi-enclosing state and covers the outside of the guiding tube 722, and can buckle the guiding tube 722 on the outside of the endoscope catheter, and then paste it into one body with the endoscope catheter through the adsorption colloid 723. The auxiliary tube 72 is used as the second channel and can follow the movement effect of the endoscope catheter.

[0069] Further, the guiding tube 722 and the arc-shaped outer shell 721 are integrally formed.

[0070] As Figure 4 shown, the adsorption colloid 723 is filled in the gap between the arc-shaped outer shell 721 and the guiding tube 722, and its outer surface can fit with the outer surface of the endoscope catheter. That is to say, the inner side of the adsorption colloid 723 is pasted into one body with the arc-shaped outer shell 721 and the guiding tube 20, and the outer side is arc-shaped and can be pasted and fixed with the surface of the endoscope catheter.

[0071] In a specific embodiment of the present invention, the adsorption colloid 723 is made of silica gel material. In this embodiment, only a material type of the adsorption colloid 723 is given. Using other medically applicable materials with adsorption / sticking effects as the adsorption colloid 723 belongs to the same technical concept as the present invention and falls within the protection scope of the present invention.

[0072] In a specific embodiment of the present invention, a transparent plastic film is pasted on the surface of the adsorption colloid 723. During use, the transparent plastic film is torn off, the angle of the endoscope catheter is adjusted so that the single channel is aligned with the first catheter opening 732, and then the adsorption colloid 723 is pressed and adhered to the rubber shell of the endoscope catheter to form one body, realizing the fitting of the auxiliary tube 72 and the endoscope catheter. After the two are fitted, they can be bent or moved synchronously, and then the use effect of the double-channel endoscope is realized, which is convenient for doctors to perform complex surgical operations.

[0073] Preferably, the connecting tube 71 is made of a rigid plastic tube. The materials of the arc-shaped outer shell 721 and the guiding tube 722 are selected as plastic rubber tubes.

[0074] In a specific embodiment of the present invention, the connecting tube 71 and the guiding tube 722 are fixedly connected by bonding and are in communication with each other. During use, the connecting tube 71 can be connected to a water injection device or a suction device to add water / remove impurities from the inside of the gastric cavity; or, a guide wire / clip can be inserted at the connecting tube 71, and the guide wire / clip extends from the second catheter opening 733 of the transparent cap 73, and operations such as suturing, clamping, and medicating can be performed.

[0075] Furthermore, the length of the auxiliary tube 72 is set according to the length of the endoscope catheter of different endoscopes (gastroscope / colonoscope); for example, the length of the auxiliary tube 72 for supporting the use of a gastroscope is set to 100 cm, and the length of the auxiliary tube 72 for supporting the use of a colonoscope is set to 130 cm.

[0076] Furthermore, every 30 cm along the length of the endoscope catheter, the auxiliary tube 72 is fixed with transparent tape, or an elastic rubber ring is sleeved with a stirrup outside the endoscope catheter and the auxiliary tube 72 to achieve secondary reinforcement after the two are connected through the adsorption colloid 723. Since the thickness of the transparent tape / elastic rubber ring is very thin, it will not affect the operation of the endoscope.

[0077] Specifically, in order to achieve a 180° fit between the internal channel of the guiding tube 722 of the auxiliary tube 72 and the single forceps channel of the endoscope catheter, a scale or marking line is provided on the outer side of the circular card slot 731 of the transparent cap 73. Correspondingly, a mark is made at the end of the endoscope catheter to facilitate the alignment of the endoscope catheter with the first catheter opening 732 of the transparent cap 73.

[0078] In the present invention, a first catheter opening 732 and a second catheter opening 733 are opened in the transparent cap 73 to communicate with the single forceps channel of the endoscope catheter and the internal forceps channel of the auxiliary tube 72, realizing a double forceps channel cooperation. Then, surgical instruments such as a suture device or a medical titanium clip are inserted into the double forceps channel to achieve double forceps channel operation.

[0079] For the auxiliary tube of the present invention, the auxiliary tube 72 is attached to the side of the endoscope catheter through the adsorption colloid 723. The cross-section of the auxiliary tube 72 is designed as a flat, non-standard elliptical tube. The auxiliary tube 72 fits well with the endoscope throughout the whole process, and the material of the auxiliary tube 72 is thin and soft, without affecting the operation function of the endoscope. During use, it is adsorbed and fixed to the endoscope catheter through the adsorption colloid 723. At the same time, according to the length of the endoscope catheter, transparent tape is used to perform secondary pasting and reinforcement on the auxiliary tube 72 to ensure the stability of the fixation. While ensuring the binding of the two, the auxiliary channel catheter is enabled to have the function of following the endoscope catheter. At the same time, the end of the auxiliary tube 72 is fixedly connected to the transparent cap 73 and is snap-fitted and fixed to the end of the endoscope catheter through the circular card slot 731 inside the transparent cap 73, realizing the reliable connection between the auxiliary tube 72 and the endoscope catheter and the positioning of their relative positions.

[0080] In a specific embodiment of the present invention, as Figure 6 shown, a threaded section is provided at the end of the outer sleeve 2; an internal thread 201 is provided on the threaded section; the suture staple 4 is arranged inside the outer sleeve 2 and can be screwed with the internal thread 201.

[0081] In this embodiment, by arranging multiple staples 4 to fit into each other from top to bottom, or in other words, multiple staples 4 are sequentially engaged, synchronous rotation of multiple staples 4 is achieved by driving with the guide wire 1; the rotational power of the guide wire 1 can be transmitted from top to bottom to the end staple 4, thereby driving the end staple 4 to rotate. During the rotation of the end staple 4, it can be gradually screwed into the internal thread 201 at the bottom of the outer sleeve 2, and at the same time, it is screwed into the human tissue for stapling; with the continuous rotation of the guide wire 1, the staple 4 can be gradually screwed out from the bottom of the outer sleeve 2, unscrewed from the internal thread 201, and at the same time, the function of rotating the staple 4 into the human tissue is completed.

[0082] In this embodiment, after the first staple 4 (the end one) is rotated and stapled, the first staple 4 is simultaneously detached from the outer sleeve 2, and then the penultimate staple 4 can be driven by the guide wire 1 to be screwed into the outer sleeve 2. At this time, the position of the outer sleeve 2 is adjusted through the endoscope, and then the installation position of the second staple 4 can be adjusted.

[0083] Preferably, the number of turns of the internal thread 201 is equal to the number of turns of the external thread 408 on the outside of the staple 4; in this embodiment, by setting the number of turns of the internal thread 201 of the outer sleeve 2 to be equal to the number of turns of the external thread 408 of the staple 4, there are two states: partial screwing and complete screwing between the two.

[0084] In a specific embodiment of the present invention, as Figure 8 shown, the staple 4 includes: an upper sleeve 401, a rotary joint portion 402, an engaging portion 403, and a screwing portion 404; the upper sleeve 401, the rotary joint portion 402, the engaging portion 403, and the screwing portion 404 are sequentially arranged from top to bottom and are of an integral structure.

[0085] Specifically, as Figure 8 shown, the diameter of the upper sleeve 401 is smaller than the diameter of the rotary joint portion 402.

[0086] Specifically, as Figure 8 shown, the outer surface of the rotary joint portion 402 is provided with an external thread 408, and the external thread 408 can be screwed into the internal thread 201 of the outer sleeve 2.

[0087] Preferably, the screwing portion 404 is a spiral structure. When the whole staple 4 rotates, the screwing portion 404 can rotate into the human tissue to realize the connection between the staple 4 and the tissues around the wound surface to be sutured of the patient.

[0088] Furthermore, in order to realize the synchronous release of the staple 4 from the outer sleeve 2 and the screwing of the staple 4 into the human tissue; preferably, in this embodiment, the number of turns of the spiral of the screwing portion 404 is equal to the number of turns of the internal thread 201.

[0089] Preferably, the pitch of the spiral structure of the screwing part 404 is set to be equal to the pitch of the internal thread 201. In this embodiment, by setting the pitch of the screwing part 404 to be equal to the pitch of the internal thread 201, the suture staple 4 can be gradually screwed out from the bottom of the outer sleeve 2 and simultaneously screwed into the human tissue at the same speed.

[0090] Specifically, as Figure 8 , Figure 11 shown, a sleeve inner cavity 406 is provided inside the upper sleeve 401, and a clamping groove 407 is provided on the side wall of the sleeve inner cavity 406; a plurality of clamping ridges 409 are provided on the outer side of the clamping part 403; the clamping part 403 can be clamped into the sleeve inner cavity 406; the clamping ridges 409 can be clamped with the clamping groove 407, so that two adjacent suture staples 4 are mutually engaged and rotated synchronously.

[0091] Specifically, as Figure 11 shown, a first driving ridge 103 is provided on the outer side of the driving boss 102, and the driving boss 102 and the first driving ridge 103 can be respectively clamped into the sleeve inner cavity 406 and the clamping groove 407.

[0092] As Figure 8 shown, a threading hole 405 is provided on the screwing connection part 402, and the suture 3 is threaded into the suture 4. Specifically, the threading hole 405 is provided at the edge of the screwing connection part 402 and is located outside the upper sleeve 401.

[0093] As Figure 12 , Figure 13 shown, the suture 32 is threaded into the threading hole 405, and a plurality of suture staples 5 can be connected in series, and the connected suture staples 4 are mutually engaged, and then can be rotationally driven by the driving boss 102 and the first driving ridge 103 at the end of the guide wire 1. It should be noted that when a plurality of suture staples 4 are continuously nailed into the human tissue, due to the rotation of the suture staples 4, the suture 3 will be wound around the outside of the upper sleeve 401, achieving the effect of shortening the distance between the suture staples 4 to a certain extent and tightening the wound; and when the wound is not tightened after two consecutive suture staples 4 are nailed into the tissue, the suture 3 is pulled outward or the suture 3 is disengaged from the upper sleeve 401 by the action of the endoscope, and the suture 3 is continuously pulled outward to shorten the length of the suture 3 between the two suture staples 3, achieving the tightening of the wound surface.

[0094] Alternatively, the threading hole 405 is provided at the center of the screwing connection part 402, and the threading hole 405 penetrates through the bottom surface of the screwing connection part 402 and the clamping part 403. Correspondingly, in this embodiment, as Figure 20As shown, the guide wire 1 is arranged in a hollow circular tube structure. One end of the suture 3 is connected to the suture staple 4 at the end, and a plurality of suture staples 4 are connected in sequence and the other end can pass through the upper end of the guide wire 1. Further, a wire outlet groove is opened on the side surface of the upper sleeve 401. When the second suture staple 4 is screwed, the suture 3 is led out from the wire outlet groove; in this embodiment. By opening the wire outlet groove, the height difference of the suture 3 at multiple suture staples 4 is reduced, so that the height of the suture 3 tends to be consistent to facilitate tightening. In this specific embodiment, by arranging the wire passing hole 405 at the center of the screwing part 402, when the suture staple 4 rotates, the suture 3 will not rotate synchronously with the suture staple 4. When the suture 3 is in a tightened state, the suture staple 4 can rotate to screw the screwing part 404 into the human tissue. The relative rotation of the suture 3 and the suture staple 4 avoids the suture staple 4 winding the wire, and at the same time screws the screwing part 402 out from the bottom end of the outer sleeve 2; after the first suture staple 4 is nailed, when continuing to install the second suture staple 4, first lead the suture 3 out from the wire outlet groove so that the suture 3 is as horizontal as possible with the wound surface; after multiple (at least two) suture staples 4 are screwed into the tissue, the suture 3 is located on the upper surface of the tissue. By tightening the suture 3, the distance between multiple suture staples 4 can be shortened, realizing the reduction of a large wound surface.

[0095] Preferably, in this embodiment, the number of suture staples 4 is set to four; the four suture staples are arranged in sequence from top to bottom as Figure 9 shown, and the state where the four suture staples 4 are nested and engaged with each other is as Figure 10 shown. In this embodiment, the number of suture staples 4 does not limit the protection scope of the present invention. In actual application, the number of suture staples 4 can be set according to needs.

[0096] As Figure 9 、 Figure 10 shown, the four suture staples 4 are respectively: the first suture staple 41, the second suture staple 42, the third suture staple 43 and the fourth suture staple 44, as Figure 9 、 Figure 10 shown. Specifically, the driving boss 102 and the first driving rib 103 at the end of the guide wire 1 are engaged with the sleeve inner cavity 406 and the engaging groove 407 of the first suture staple 41 respectively, and thus the first suture staple 41 can be driven to rotate; the engaging part 403 and the engaging rib 409 of the first suture staple 41 are respectively inserted into the sleeve inner cavity 406 and the engaging groove 407 of the second suture staple 42, and can drive the second suture staple 42 to rotate; similarly, the second suture staple 42 can drive the third suture staple 43 to rotate, and the third suture staple 43 can drive the fourth suture staple 44 to rotate. When the fourth suture staple 44 rotates, it can be screwed with the internal thread 201 at the end of the outer sleeve 2, and at the same time, the screwing part 404 at the end of the fourth suture staple 44 can be screwed into the tissue to be sutured.

[0097] As Figure 16 、Figure 17 , Figure 18 , Figure 19 As shown in Figure 19 , the suture device of this embodiment further includes an indicating component 5; the indicating component 5 is arranged at the end of the outer sleeve 2, and when the guide wire 1 rotates, the number of rotation turns can be displayed through the indicating component 5.

[0098] In a specific implementation manner of the present invention, as Figure 16 , Figure 17 , Figure 18 , Figure 19 shown, the indicating component 5 includes: a scale disk 501, an indicating disk 502, a driving gear 504 and a positioning gear 505; the guide wire 1 can drive the driving gear 504 to rotate; an internal gear ring 5022 is arranged inside the indicating disk 502; the internal gear ring 5022 meshes with the positioning gear 505, and the positioning gear 505 meshes with the driving gear 504; when the guide wire 1 drives the driving gear 504 to rotate, the indicating disk 502 rotates synchronously, and the transmission ratio of the internal gear ring 5022 to the driving gear 504 is less than 1; the indicating disk 502 is rotatably installed above the scale disk 501, and an indicating mark 508 is arranged at the top of the indicating disk 502; when the indicating disk 502 rotates, the number of rotation turns of the guide wire 1 is displayed through the scale corresponding to the indicating mark 508 on the scale disk 501.

[0099] Specifically, the indicating disk 502 includes: an upper end cover 5021 and an internal gear ring 5022; the upper end cover 5021 is fixedly installed above the internal gear ring 5022 and is of an annular structure. Among them, the internal gear ring 5022 meshes with the positioning gear 505, and when the positioning gear 505 rotates, it can drive the internal gear ring 5022 to rotate. The upper end cover 5021 is used to limit the up and down displacement of the driving gear 504, so that the driving gear 504 can only rotate and cannot move in position.

[0100] Further, scales are arranged on the upper surface edge of the scale disk 501 for displaying the number of rotation turns of the guide wire 1.

[0101] Further, as Figure 19 shown, a positioning disk 503 is also fixedly arranged on the upper surface of the scale disk 501. The positioning disk 503 and the scale disk 501 are of an integral structure, and wire passing holes 509 are arranged in the middle of both of them.

[0102] Further, the positioning gear 505 is rotatably installed on the positioning disk 503; preferably, there are three positioning gears 505, and they are circumferentially and equally spaced above the scale disk 501, as Figure 18 shown. Specifically, a rotating shaft is fixedly installed above the positioning disk 503, and the positioning gear 505 is sleeved on the rotating shaft and can rotate relative to the positioning disk 503.

[0103] Further, the driving gear 504 is disposed at the center of the three positioning gears 505 and meshes with the three positioning gears 505 simultaneously. Specifically, the lower surface of the driving gear 504 contacts but is not connected to the upper surface of the positioning disk 503, and the upper surface of the driving gear 504 contacts but is not connected to the lower surface of the upper end cover 5021, so that the driving gear 504 is limited between the positioning disk 503 and the upper end cover 5021 and can rotate but not move. When the guide wire 1 engages with the driving gear 504, the driving gear 504 can be driven to rotate, thereby driving the positioning gears 505 to rotate, and driving the internal gear ring 5022 to rotate through the positioning gears 505. When the internal gear ring 5022 rotates, the indicating mark 508 on the surface of the upper end cover 5021 rotates, and the number of turns of the rotation of the guide wire 1 is represented by the scale aligned with the indicating mark 508.

[0104] Specifically, as Figure 17 、 Figure 18 shown, a convex ring engaging hole 506 is provided in the middle of the driving gear 504, and a driving groove 507 is provided on the side surface of the convex ring engaging hole 506.

[0105] Specifically, as Figure 15 shown, a driving convex ring 105 and a second driving convex rib 106 that engage with the convex ring engaging hole 506 and the driving groove 507 are provided on the outer side of the guide wire 1. When the second driving convex rib 106 engages with the driving groove 507, the guide wire 1 can drive the driving gear 504 to rotate. Alternatively, a rectangular / polygonal driving hole is provided in the middle of the driving gear 504. Correspondingly, a driving portion that cooperates with the driving hole is provided outside the guide wire 1, so as to realize the synchronous rotation of the driving gear 504 and the guide wire 1.

[0106] Further, as Figure 14 、 Figure 16 shown, a circular hole is provided in the middle of the circular upper end cover 5021, and the driving convex ring 105 and the second driving convex rib 106 of the guide wire 1 can pass through the circular hole into the convex ring engaging hole 506 and the driving groove 507 of the driving gear 504. Specifically, the diameter of the circular hole is smaller than the diameter of the driving gear 504, and the diameter of the circular hole is larger than the diameter of the convex ring engaging hole 506 and can expose the driving groove 507.

[0107] It should be noted that during the rotation of the guide wire 1, as the suturing staples 4 are sequentially released, the guide wire 1 will slide downward relative to the outer sleeve 2. While the guide wire 1 is displaced relative to the outer sleeve 2, the driving convex ring 105 and the second driving convex rib 106 can slide in the convex ring engaging hole 506 and the driving groove 507, without affecting the rotational drive of the driving gear 504 by the guide wire 1.

[0108] Preferably, the lengths of the driving convex ring 105 and the second driving convex rib 106 are set to be greater than the sum of the lengths of the plurality of staples 4.

[0109] Furthermore, the diameter of the convex ring engaging hole 506 is greater than the maximum diameter of the staple 4, so that the staple 4 can pass through the convex ring engaging hole 506 and enter the interior of the outer sleeve 2.

[0110] Furthermore, as Figure 19 shown, a guide wire through hole 509 is provided in the middle of the dial 501, and the guide wire 1 can pass through the guide wire through hole 509. Specifically, the diameter of the guide wire through hole 509 is greater than the diameter of the convex ring engaging hole 506 and less than the diameter of the driving gear 504; the guide wire 1 and the driving convex ring 105 and the second driving convex rib 106 provided on its surface can pass through the guide wire through hole 509.

[0111] Furthermore, the transmission ratio ω of the driving gear 504 to the internal gear ring is the product of the transmission ratio ω1 of the driving gear 504 to the positioning gear 505 and the transmission ratio ω 2 of the positioning gear 505 to the internal gear ring, that is, ω = ω 1 ×ω 2 . Exemplarily, when ω 1 = 2 and ω 2 = 5, ω = 10, that is, when the driving gear 504 rotates one circle, the indicating disk 502 rotates 36 degrees. When ω 1 = 6 and ω 2 = 6, ω = 36, that is, when the driving gear 504 rotates one circle, the indicating disk 502 rotates 10 degrees.

[0112] Preferably, the transmission ratio ω 1 of the driving gear 504 to the positioning gear 505 is greater than 2:1, that is to say, the rotational angular velocity of the positioning gear 505 is less than half of the rotational angular velocity of the driving gear 504.

[0113] Preferably, the transmission ratio ω 2 of the positioning gear 505 to the internal gear ring of the indicating disk 502 is greater than 5:1, that is to say, the rotational angular velocity of the positioning gear 505 is more than 5 times the rotational angular velocity of the internal gear ring.

[0114] In this embodiment, by setting the transmission ratio of the driving gear 504 to the internal gear ring, when the guide wire 1 rotates, the number of rotations of the guide wire 1 is represented by the rotation angle of the indicating disk 502, and then the number of rotations of the staple 4 can be indirectly displayed. On the premise of ensuring that the staple 4 is fully screwed with the human tissue, excessive screwing damage to the human tissue is avoided as much as possible, and secondary damage to the organ is avoided.

[0115] During implementation, the guide wire 1 is inserted into the outer sheath 2. The driving boss 105 and the second driving rib 106 on the outside of the guide wire 1 can cooperate with the boss engaging hole 506 and the driving groove 507 in the middle of the driving gear 504; thereby driving the driving gear 504 to rotate. The driving gear 504 transmits the motion to the indicating disk 502 through the positioning gear 505 and reduces the rotational speed, and the number of turns is displayed through the indicating mark 508 on the indicating disk 502.

[0116] Specifically, as Figure 15 shown, the outer end of the guide wire 1 is provided with a guide wire handle 104. The guide wire handle 104 is arranged above the guide wire 1 and is used to drive the guide wire 1 to rotate.

[0117] Specifically, as Figure 14 shown, the outer end of the outer sheath 2 is provided with a sheath handle 202. The sheath handle 202 is arranged on one side of the outer sheath 2 and is fixedly connected to the outer sheath 2; during use, one hand holds the sheath handle 202 to position the outer sheath 2, and the other hand rotates the guide wire handle 104 to realize the rotation of the guide wire 1 relative to the outer sheath 2.

[0118] Preferably, the outer sheath 2 is made of a transparent material.

[0119] Furthermore, in the design of the size of the suture staples of the present invention, different models are set according to different application scenarios, that is, for different parts of the stomach, duodenum, and colorectum, or differences in the mucosal layer and the entire digestive tract wall layer, the appropriate size is adjusted during external installation. Exemplarily, the length of the suture staple is 5.5 mm for the stomach, 4 mm for the esophagus, 3 mm for the duodenum, and 3 mm for the colorectum. It is necessary to ensure sufficient depth into the muscular layer and reduce the risk of damaging large blood vessels around. The present invention adjusts the appropriate size of the suture staple 4 for different parts of the stomach, duodenum, and colorectum, or differences in the mucosal layer and the entire digestive tract wall layer, which helps to reduce the incidence of suture complications.

[0120] The usage method of the suture device in this embodiment is as follows:

[0121] In the first step, a plurality of suture staples 4 are sequentially loaded into the interior of the outer sheath 2; and the guide wire 1 is further inserted into the outer sheath 2. The plurality of suture staples 4 are pressed by the guide wire 1, and the driving boss 102 and the first driving rib 103 at the end of the guide wire 1 are mutually engaged with the sleeve inner cavity 406 and the engaging groove 407 of the upper sleeve 401 of the suture staple 4 by rotating the guide wire 1. At this time, the threaded section at the end of the outer sheath 2 restricts the end suture staple 4 from leaking out from the bottom of the outer sheath 2. Preferably, the number of suture staples 4 is 4.

[0122] Step 2: Insert the distal end of the catheter of the endoscope into the wound surface to be sutured; insert the suture device composed of the guide wire 1, the outer sheath 2, and the staple 4 into the inner channel of the endoscope until the distal end of the outer sheath 2 passes through the distal end of the catheter of the endoscope. Drive the endoscope to move, and drive the outer sheath 2 and the staple 4 inside it to displace around the wound surface to be sutured, and bring the staple 4 at the outermost end into contact with the human tissue.

[0123] Step 3: Rotate the guide wire 1, drive the uppermost staple 4 (the first staple 41) that is mutually engaged with it to rotate through the guide wire 1. Furthermore, since the first staple 41, the second staple 42, the third staple 43, and the fourth staple 44 are nested and installed with each other, the rotational power can be sequentially transmitted from the first staple 41 to the fourth staple 44, and drive the fourth staple 44 to rotate.

[0124] Step 4: When the fourth staple 44 rotates, it gradually engages with the internal thread 201 of the threaded section at the distal end of the outer sheath 2. At the same time, the engaging portion 404 at the bottom of the fourth staple 44 gradually screws into the human tissue; continue to rotate the guide wire 1 until the fourth staple 44 disengages from the threaded section of the outer sheath 2, completing the release of the terminal staple 4 from the outer sheath 2. At this time, the installation of the first staple 4 is completed.

[0125] Step 5: Repeat the above steps until all four staples 4 are installed in place, and gradually tighten the suture 3 as the staples 4 are installed. Under the pulling force of the suture 3, the adjacent two staples 4 gradually approach, and then pull the tissues around the wound surface to converge towards the middle, achieving the contraction effect on the large wound surface.

[0126] Compared with the prior art, the technical solution of the present invention has at least one of the following beneficial effects:

[0127] 1. The large wound surface suture system assisted by the channel catheter for the single-channel endoscope of the present invention realizes the rapid construction of a double-channel through the auxiliary channel tube attached to the outside of the endoscope catheter, and can realize double-channel operation; by installing the staple 4 and tightening the suture 3, continuous suture or interrupted suture in the form of endoscopic surgery is achieved on the wound surface. The structure is simple, the operation is convenient, the operation difficulty is greatly reduced, and the suture efficiency is improved. Moreover, the three special functions of adjustable, rotatable, and releasable of the staple 4 are strengthened, thereby further improving the suture effect.

[0128] 2. The single-channel endoscope channel catheter-assisted large wound suturing system of the present invention releases the suture staples by rotating the guide wire 1, and the sleeve handle 202 is set on one side of the indicator component 5. The indicator component 5 is a rotating device, and the number of rotations can be marked by the rotation of the driving gear and the indicator disk. Recording the number of rotations can remind the endoscopist's operation to prevent the rotation from being too deep or too shallow. The guide wire 1 and the outer sleeve 2 can both rotate forward and backward. Once the first suture staple 4 is inserted incorrectly or the position is deviated, it can be rotated in the opposite direction to be removed, so as to prevent the entire suture effect from being affected by the insertion error of the suture staple 4.

[0129] 3. The single-channel endoscope channel catheter-assisted large wound suturing system of the present invention assembles suture staples in vitro. After the suture staples are inserted, the wound tightening effect is not ideal (referring to), and suture staples 4 can be further installed for suturing. Suture staples 4 are further loaded into the outer sleeve 2, and then the suture staples 4 are screwed into the tissue to promote wound closure until the wound is closed or until the wound can be clamped with an ordinary metal clip. The wound closure is completed and the thread is cut with scissors, which is more flexible and active.

[0130] 4. The single-channel endoscope channel catheter-assisted large wound suturing system of the present invention has an indicator assembly 5 fixedly installed on the outer end of the outer sleeve 2. The driving gear 504 of the indicator assembly 5 rotates synchronously with the guide wire 1, and the rotational motion is transmitted to the indicator disk 502 through the positioning gear 505. By setting the transmission ratio between the driving gear 504 and the positioning gear 505 and the transmission ratio between the positioning gear 505 and the inner gear ring of the indicator disk 502, the rotational motion can be transmitted to the indicator disk 502 and the rotation speed can be changed at the same time, so that when the driving gear 504 (guide wire 1) rotates one circle, the indicator disk 502 only rotates through a certain angle, and the rotation angle of the indicator disk 502 is displayed by the indicator mark 508, and then the number of rotations of the guide wire 1 can be displayed, thereby realizing reliable observation and control of the number of rotations of the suture nail 4.

[0131] Example 2

[0132] A specific embodiment of the present invention, as Figure 21 , Figure 22 As shown, an alternative solution of the suture staple 4 in embodiment 1 is provided, the difference being that:

[0133] The suture staple 4 of this embodiment is not provided with a threading hole 405 ; in this embodiment, two thread retaining grooves 410 are symmetrically provided on the upper sleeve 401 .

[0134] Specifically, Figure 21 , Figure 22As shown, the suture groove 410 includes: a longitudinal suture groove 4101 and an arc-shaped suture groove 4102; wherein, the longitudinal suture groove 4101 extends along the axial direction of the upper sleeve 401, the arc-shaped suture groove 4102 is arranged at the bottom of the longitudinal suture groove 4101, one end of the arc-shaped suture groove 4102 is communicated with the lowest end of the longitudinal suture groove 4101, and the other end of the arc-shaped suture groove 4102 extends upward and is higher than the lowest end of the longitudinal suture groove 4101.

[0135] Further, two arc-shaped suture grooves 4102 are symmetrically arranged at the bottom end of the longitudinal suture groove 4101, so that the suture groove 410 as a whole presents an inverted Y-shaped structure, as Figure 22 shown.

[0136] During implementation, the staples 4 are successively rotated and nailed into the outer tissues of the wound surface to be sutured. Further, the suture 3 is successively pressed downward into the suture grooves 410 of two adjacent staples 4. After the suture 3 is caught in the suture groove 410, the suture 3 is pulled laterally to slide along the arc-shaped suture groove 4102 to the highest end. Pulling the suture 3 can reduce the distance between two adjacent staples 4, thereby realizing the reduction of a large wound surface.

[0137] Repeating the above process can connect multiple staples 4 through the suture 3. And after the suture 3 is caught in the arc-shaped suture groove 4102, due to the tension of the suture 3, the suture 3 is clamped at the highest end of the arc-shaped suture groove 4102 to avoid detaching from the staple 4. After the contraction of the wound surface is completed, the suture 3 is wound and bound to the end staple 4 to keep it fixed, thereby realizing the suture of the contracted large wound surface.

[0138] Compared with the prior art, the embodiment of the present invention has at least one of the following beneficial effects:

[0139] The suture device of this embodiment is designed with the suture 3 separated from the staple 4. When performing operations such as screwing in, screwing out, and releasing the staple 4, it can avoid the interference of the suture 3; after the staple 4 of this embodiment is screwed into the human tissue, it can reduce the large wound surface by catching the suture 3 in the suture groove 410 and tightening the suture 3, realizing "nailing first and then winding the thread", which is simple and convenient to operate and can effectively contract the large wound surface.

[0140] Embodiment 3

[0141] A specific embodiment of the present invention is further improved on the basis of Embodiment 1:

[0142] As Figure 23 、 Figure 24 shown, in this embodiment, the suture device further includes: a thread catcher 6, and the thread catcher 6 is threaded on the suture 3 and can limit the movement of the suture 3 to prevent the tightened suture from retracting.

[0143] As Figure 23 , Figure 24 shown, the wire clamping device 6 is cylindrical, with a plurality of limiting conical rings 601 arranged inside. A plurality of linear slots 602 are arranged on the limiting conical ring 601; the large end of the limiting conical ring 601 is fixed integrally with the cylindrical outer shell of the wire clamping device 6, and the diameter of the small end of the limiting conical ring 601 allows the suture 3 to pass through, and the suture 3 can slide unidirectionally in the limiting conical ring 601 and be reversely locked.

[0144] Specifically, a plurality of the linear slots 602 are provided, and the plurality of linear slots 602 are arranged at equal intervals at the small end of the limiting conical ring 601.

[0145] During implementation, when the suture 3 is inserted into the wire clamping device 6, the small end of the limiting conical ring 601 is slightly deformed, and the opening of the linear slot 602 expands, allowing the suture 3 to slide unidirectionally in the wire clamping device 6; when the suture 3 slides reversely in the wire clamping device 6, it will be restricted by the small end of the limiting conical ring 601. Due to the structural characteristics of the suture 3 itself, the fine fiber structure of the suture 3 will promote the contraction of the small end of the limiting conical ring 601 to achieve reverse locking.

[0146] Furthermore, in order to ensure the locking effect of the limiting conical ring 601 on the suture 3, a plurality of limiting conical rings 601 are arranged at equal intervals along the axis direction inside the cylindrical outer shell of the wire clamping device 6. After the plurality of sutures 4 tighten the large wound surface, the wire clamping device 6 is sleeved outside the suture 3, and then the wire clamping device 6 is slid to the last suture 4 after tightening through the guide wire 1 or the metal titanium clip (clamping the wire clamping device 6) to clamp and position the suture 3 to prevent the tightened wound surface from expanding again.

[0147] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A single-channel endoscope channel catheter-assisted large wound suturing system, characterized in that: include: A suturing device and an auxiliary channel tube (7); the auxiliary channel tube (7) can be attached to the outside of an endoscope catheter, and its internal channel can be arranged in parallel with the endoscope clamp channel to form a double clamp channel; the suturing device can extend into the internal clamp channel of the auxiliary channel tube (7) / endoscope catheter; The suturing device comprises: a guide wire (1), an outer sleeve (2), a suture thread (3) and a suture staple (4); the suture staple (4) is arranged inside the outer sleeve (2) and can be screwed with the end thread of the outer sleeve (2); a plurality of suture staples (4) are provided, and the plurality of suture staples (4) are mutually nested and installed from top to bottom and can rotate synchronously; the guide wire (1) can be inserted into the inner part of the outer sleeve (2), and a driving boss (102) is arranged at the end of the guide wire (1); the driving boss (102) can be mutually engaged with the uppermost suture staple (4), and when the guide wire (1) rotates, it can drive the suture staple (4) to rotate; a screwing part (404) is arranged at the end of the suture staple (4), and when the suture staple (4) rotates, the screwing part (404) can be screwed into the tissue to be sutured; the suture thread (3) is connected in series with a plurality of suture staples (4); The suture staple (4) comprises: an upper sleeve (401), a screw-on portion (402), a clamping portion (403) and a screw-on portion (404); the outer surface of the screw-on portion (402) is provided with an external thread (408), and the external thread (408) can be screwed with the internal thread (201) of the outer sleeve (2); the release of the suture staple (4) from the outer sleeve (2) and the screwing of the suture staple (4) into the human tissue are performed synchronously; the interior of the upper sleeve (401) is provided with a sleeve inner cavity (406), and a clamping groove (407) is provided on the side wall of the sleeve inner cavity (406); the outer side of the clamping portion (403) is provided with a plurality of clamping ridges (409); the clamping ridges (409) can be clamped with the clamping grooves (407), so that two upper and lower adjacent suture staples (4) are mutually engaged and rotate synchronously.

2. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 1, characterized in that: The auxiliary channel tube (7) comprises: a connecting tube (71), an auxiliary tube (72) and a transparent cap (73); the connecting tube (71) and the transparent cap (73) are respectively fixedly mounted on both ends of the auxiliary tube (72).

3. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 2, characterized in that: The auxiliary tube (72) comprises: an arc-shaped outer shell (721) and a guide tube (722); the arc-shaped outer shell (721) surrounds the outside of the guide tube (722), and the two are an integrated structure; an adsorbent colloid (723) is filled between the arc-shaped outer shell (721) and the guide tube (722); the adsorbent colloid (723) is a viscous material and can be adsorbed and connected to the side of the endoscope catheter; the transparent cap (73) is covered at the end of the endoscope catheter.

4. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 3, characterized in that: The transparent cap (73) is provided with a circular groove (731) capable of engaging with the endoscope catheter; the transparent cap (73) is also provided with a first catheter opening (732) and a second catheter opening (733); the first catheter opening (732) is aligned with the single clamp channel of the endoscope catheter, and the second catheter opening (733) is connected to the guide tube (722).

5. The single-channel endoscope channel catheter-assisted large wound suturing system according to any one of claims 1 to 4, characterized in that: The upper sleeve (401), the screw-on portion (402), the clamping portion (403) and the screw-on portion (404) are arranged in sequence from top to bottom and are an integrated structure.

6. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 5, characterized in that: The suture staples (4) are provided with four, namely: a first suture staple (41), a second suture staple (42), a third suture staple (43) and a fourth suture staple (44).

7. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 6, characterized in that: The screw-on portion (404) is a spiral structure.

8. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 7, characterized in that: The snap-fitting portion (403) can be snapped into the inner cavity (406) of the sleeve.

9. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 8, characterized in that: The screw-on portion (402) is provided with a threading hole (405), and the suture thread (3) is threaded into the suture thread (4).

10. The single-channel endoscope channel catheter-assisted large wound suturing system according to claim 1, characterized in that: The suturing device further comprises: an indicating component (5); the indicating component (5) is arranged at the end of the outer sleeve (2); when the guide wire (1) rotates, the number of rotations can be displayed through the indicating component (5).

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