Mucosa stitching instrument for digestive endoscopy

Abstract

The mucosa stitching instrument comprises a digestive endoscope pipeline, a circular ring is slidably connected to the sliding end of the digestive endoscope pipeline, an arc-shaped shell is fixedly connected to the outer wall of the top end of the circular ring, and a stitching mechanism and an operating mechanism are installed in the arc-shaped shell. By adopting the design of the suturing mechanism and the operating mechanism, a traditional suturing method and a titanium clip clamping method are changed for suturing, the operation difficulty is greatly reduced, a doctor does not need to carry out complex operations such as coordination of two hands, and the operation efficiency is greatly improved only by operating a first connecting line and a second connecting line. The annular needle can slide by adjusting the threading angle of the annular needle, the suturing action can be completed, the requirements for the technical level and experience of doctors are greatly lowered, meanwhile, cost is low, residues after titanium clip closing operation are avoided, and the device can be reused after being disinfected and cleaned after operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a mucosal suture device for digestive endoscopy. Background Technology

[0002] In the context of current medical technology advancements, digestive endoscopy, as a crucial minimally invasive treatment, places paramount importance on the mucosal suturing stage. This precise technique directly impacts the quality of wound healing and significantly influences the patient's postoperative recovery. Clinical practice demonstrates that meticulous mucosal suturing effectively reduces the probability of postoperative complications, lowers the risk of bleeding and infection, and creates more favorable conditions for subsequent treatment. Therefore, throughout the entire digestive endoscopic procedure, surgeons must prioritize the standardization and precision of mucosal suturing to ensure optimal surgical outcomes.

[0003] Currently, most traditional endoscopic mucosal suturing methods for digestive diseases use titanium clips for closure. However, this method has some drawbacks. Titanium clip closure is costly; after each suturing, some clips remain at the suture site and do not easily fall off; and incomplete closure of the entire thickness is frequently observed.

[0004] These problems urgently require a new type of mucosal suture device for digestive endoscopy to improve the quality and safety of digestive endoscopic surgery. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mucosal suture device for digestive endoscopy, which solves the problems of high cost, titanium clip residue, and incomplete closure in existing endoscopic mucosal suturing methods.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a mucosal suture device for digestive endoscopy, comprising a digestive endoscopy tubing, wherein a ring is slidably connected to the sliding end of the digestive endoscopy tubing, and an arc-shaped shell is fixed to the outer wall of the top end of the ring, and a suturing mechanism and an operating mechanism are installed inside the arc-shaped shell; The sewing mechanism includes an inverted T-shaped frame fixedly connected to the inside of the arc-shaped housing. A ring needle is slidably connected to the arc-shaped through-hole of the inverted T-shaped frame, and several teeth are machined into the annular groove of the ring needle. Gears are hinged to the upper and lower parts of the inside of the arc-shaped housing via pins, and these gears mesh with the teeth of the ring needle. A ratchet is provided on the outer side of the lower gear, and the ratchet is rotatably connected to the inside of the arc-shaped housing via a pin. The ratchet and the gear are connected by a connecting assembly. Preferably, the connecting assembly includes a first synchronous pulley and a second synchronous pulley fixedly connected to the gear and ratchet shafts respectively, and the first synchronous pulley and the second synchronous pulley are rotatably connected by a synchronous belt. A guide wheel is installed on the middle outer wall of the synchronous belt, and the guide wheel is rotatably connected to the arc-shaped housing by a pin.

[0007] Preferably, the operating mechanism includes a slider that is slidably connected to a pair of grooves in the arc-shaped housing. A toothed belt is fixedly connected to the outer wall of the slider, and the teeth of the toothed belt are engaged with a ratchet. A first connecting line is fixedly connected to the end of the toothed belt away from the ratchet, and the outer wall of the first connecting line is slidably connected to the through holes of the arc-shaped housing and the digestive endoscope tubing, respectively.

[0008] Preferably, the sidewall of the ring is fixedly connected to a second connecting line, and the second connecting line is slidably connected to the channel of the digestive endoscope.

[0009] Preferably, the meshing ratio of the ratchet to the toothed belt is 1:1.

[0010] Preferably, the material of the annular needle is medical-grade stainless steel.

[0011] Preferably, the outer surface of the guide wheel is provided with anti-slip texture. Beneficial effects

[0012] This invention provides a mucosal suturing device for digestive endoscopy, which has the following beneficial effects: By adopting the design of the suturing mechanism and the operating mechanism, the traditional suturing method and the titanium clip closure method have been changed, which greatly reduces the difficulty of operation. Doctors no longer need to perform complex hand coordination operations. They only need to operate the first connecting line and the second connecting line and adjust the threading angle of the circular needle to achieve the sliding of the circular needle to complete the suturing action. The requirements for the doctor's technical level and experience are greatly reduced. At the same time, the cost is lower, and the residue of titanium clip closure is avoided. After the operation, the device can be reused after disinfection and cleaning. Because the sliding of the circular needle is precisely controlled by mechanical structures such as gears and ratchet, the uncertainty of manual operation is avoided, and suturing can be completed quickly and accurately, effectively shortening the operation time, reducing the patient's pain and surgical risks during the operation, and the collagen absorbable medical surgical sutures used can be absorbed by the human body tissue within a few weeks after the suturing operation, so that incomplete closure will not occur. Secondly, the circular needle slides within the arc-shaped through-hole of the inverted T-shaped frame, meshing tightly and precisely with the gears, and is not affected by factors such as the doctor's hand tremors, thus ensuring the quality of the suture and promoting good healing of the surgical wound. In addition, the circular needle is made of medical-grade stainless steel, which has good biocompatibility and corrosion resistance, ensuring safety and reliability for use inside the human body. The anti-slip texture on the outer surface of the guide wheel further enhances the stability of the synchronous belt drive, ensuring the normal operation of the entire suturing mechanism. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a planar sectional view of the present invention.

[0015] Figure 3 This is a partially enlarged schematic diagram of the present invention.

[0016] Figure 4 This is a partially enlarged schematic diagram of the present invention.

[0017] Figure 5 This is a partially enlarged schematic diagram of the present invention.

[0018] Figure 6 This is a partially enlarged schematic diagram of the present invention.

[0019] In the diagram: 1. Digestive endoscope tubing; 2. Circular ring; 3. Arc-shaped housing; 4. Inverted T-shaped frame; 5. Circular needle; 6. Tooth; 7. Gear; 8. First synchronous pulley; 9. Ratchet; 10. Second synchronous pulley; 11. Synchronous belt; 12. Guide wheel; 13. Toothed belt; 14. Slider; 15. First connecting line; 16. Second connecting line. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-6 The present invention provides a technical solution: a mucosal suture device for digestive endoscopy, including a digestive endoscopy tubing 1, wherein a ring 2 is slidably connected to the sliding end of the digestive endoscopy tubing 1, and an arc-shaped shell 3 is fixed to the outer wall of the top end of the ring 2, and a suturing mechanism and an operating mechanism are installed inside the arc-shaped shell 3. The sewing mechanism includes an inverted T-shaped frame 4 fixedly connected to the inside of the arc-shaped housing 3, and an annular needle 5 slidably connected to the arc-shaped through hole of the inverted T-shaped frame 4. The annular groove of the annular needle 5 is machined with a number of teeth 6. Gears 7 are hinged to the upper and lower parts of the inside of the arc-shaped housing 3 through pins, and the gears 7 are meshed with the teeth 6 of the annular needle 5. A ratchet 9 is provided on the outer side of the lower gear 7, and the ratchet 9 is rotatably connected to the inside of the arc-shaped housing 3 through a pin. The ratchet 9 and the gear 7 are connected by a connecting component. A small-diameter slide is machined at the left end of the digestive endoscope tubing 1 to allow the ring 2 to drive the arc-shaped housing 3. The arc-shaped housing 3 is streamlined and has a polished outer surface to facilitate insertion into the patient's body along with the digestive endoscope tubing 1. An opening is machined at the bottom of the arc-shaped housing 3 to allow the circular needle 5 to extend during rotation. A circular groove is machined on the outer wall of the circular needle 5, and teeth 6 are machined in this groove to mesh with two gears 7. This allows the two gears 7 to rotate the circular needle 5 more effectively and continuously. Arc-shaped through holes are machined on the left, right, and upper interior of the T-shaped frame 4 to limit the movement of the circular needle 5. The arc-shaped through holes of the inverted T-shaped frame 4 are smoothed to reduce friction with the circular needle 5, making the circular needle 5 slide more smoothly in the arc-shaped through holes of the inverted T-shaped frame 4 and improving the efficiency of the suturing operation.

[0022] In this embodiment, the connecting assembly includes a first synchronous pulley 8 and a second synchronous pulley 10 that are fixedly connected to the shafts of the gear 7 and the ratchet 9, respectively. The first synchronous pulley 8 and the second synchronous pulley 10 are rotatably connected through a synchronous belt 11. A guide wheel 12 is installed on the middle outer wall of the synchronous belt 11, and the guide wheel 12 is rotatably connected to the arc-shaped housing 3 through a pin. The anti-slip texture on the outer surface of the guide wheel 12 ensures the stable rotation of the timing belt 11, accurately transmits the movement of the gear 7 and ratchet 9, and prevents the timing belt 11 from slipping, which would affect the sewing operation.

[0023] In this embodiment, the operating mechanism is further configured such that the slider 14 is slidably connected to a pair of grooves in the arc-shaped housing 3, the outer wall of the slider 14 is fixedly connected to a toothed belt 13, and the teeth of the toothed belt 13 are engaged with the ratchet 9. The end of the toothed belt 13 away from the ratchet 9 is fixedly connected to a first connecting line 15, and the outer wall of the first connecting line 15 is slidably connected to the arc-shaped housing 3 and the through hole of the digestive endoscope tube 1 respectively. The inner walls of the upper and lower right sides of the arc-shaped housing 3 are machined with grooves, which, together with the slider 14, can limit the toothed belt 13. The teeth of the toothed belt 13 have undergone special heat treatment, which gives them high hardness and wear resistance, enabling them to withstand frequent meshing actions and extend their service life.

[0024] In this embodiment, the second connecting line 16 is fixedly connected to the side wall of the ring 2, and the second connecting line 16 is slidably connected to the channel of the digestive endoscope tube 1. Both the second connecting line 16 and the first connecting line 15 are made of soft and strong silk, which makes it easy to slide inside the digestive endoscope tube 1, while being able to withstand a certain amount of tension and not easily broken.

[0025] In this embodiment, the meshing ratio between the ratchet 9 and the toothed belt 13 is 1:1. This 1:1 meshing ratio ensures the transmission accuracy between the toothed belt 13 and the ratchet 9, making the operation more stable and reliable. When the first connecting line 15 is pulled to move the toothed belt 13, the rotation angle of the ratchet 9 can be precisely controlled, thereby accurately driving the annular needle 5 to perform the sewing action, avoiding the problem of inaccurate sewing caused by transmission error. At the same time, the meshing ratio of the gear 7 and the teeth 6 of the annular needle 5 is also 1:1.

[0026] In this embodiment, the material of the annular needle 5 is medical stainless steel; This material has excellent corrosion resistance and biocompatibility, ensuring safety and reliability when used inside the human body.

[0027] In this embodiment, the outer surface of the guide wheel 12 is provided with anti-slip texture; The anti-slip texture on the outer surface of the guide wheel 12 can further enhance its guiding effect on the synchronous belt 11, making it more stable during rotation.

[0028] It is worth noting that all standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art, and therefore will not be described in detail here. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0030] Example: When this device is needed, the components can be assembled according to the diagram, ensuring the bolts are tightened and the welding is secure. Then, the medical suture is passed through the left side channel of the endoscope tube 1, through the suture hole at the rear end of the arc-shaped housing 3, and connected to the tail end of the ring needle 5. The endoscope tube 1 then drives the arc-shaped housing 3 deeper into the patient's body at the location requiring mucosal suture. The second connecting line 16 is then pulled from the outside, causing it to move the ring 2 towards the head end of the endoscope tube 1, thus exposing the lower opening of the arc-shaped housing 3. At this point, the two first... When the connecting line 15, i.e. the first connecting line 15 above, drives the toothed belt 13 to move to the right through the corresponding slider 14, the toothed belt 13 will drive the ratchet 9 that meshes with it to rotate clockwise. The ratchet 9 drives a pair of gears 7 to rotate through the connecting component. The gears 7 mesh with the teeth 6 of the ring needle 5, thereby driving the ring needle 5 to slide in a ring in the arc-shaped through hole of the inverted T-shaped frame 4. During this process, the doctor only needs to adjust the needle tip angle and position of the ring needle 5 through the monitoring head on the digestive endoscope tube. After the ring needle 5 completes one slide, the surgical suture on the ring needle 5 will pass through the mucosal tissue that needs to be sutured, and the suture will be completed. When the upper slider 14 moves to the far right, the lower first connecting line 15 can be pulled to the right. At this time, the toothed belt 13 will move in the opposite direction. At the same time, the teeth on the toothed belt 13 will not engage with the ratchet 9, so the ratchet 9 will not rotate. By pulling the two first connecting lines 15 in this way in a regular cycle, the circular needle 5 can continuously complete the suturing action to achieve continuous suturing of the mucosal tissue. Throughout the suturing process, the anti-slip texture on the outer surface of the guide wheel 12 ensures the stable rotation of the synchronous belt 11, accurately transmitting the movement of the gear 7 and ratchet 9, preventing the synchronous belt 11 from slipping and affecting the suturing operation. The teeth of the toothed belt 13, after special heat treatment, have high hardness and wear resistance, and can withstand frequent meshing actions, ensuring that the meshing between the toothed belt 13 and the ratchet 9 is stable and reliable during the repeated pulling of the first connecting line 15, thus extending the service life of the toothed belt 13. The first connecting line 15 and the second connecting line 16 are made of soft and high-strength silk, which is convenient to slide in the digestive endoscope tube 1, can withstand a certain amount of tension, and is not easy to break, ensuring the smooth progress of the operation. After the mucosal suturing is completed, the medical surgical suture is cut short by scissors in the digestive endoscope tube 1, and then the components are removed from the patient's body, thus completing the entire suturing operation. This new type of mucosal suture device for digestive endoscopy greatly reduces the difficulty of operation, reduces reliance on the doctor's skill level and experience, and improves suturing speed. It effectively solves the problems of traditional manual suturing methods and improves the quality and safety of digestive endoscopy.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mucosal suture device for digestive endoscopy, comprising a digestive endoscopy tubing (1), characterized in that: The sliding end of the digestive endoscope tubing (1) is slidably connected to a ring (2), and an arc-shaped shell (3) is fixed to the outer wall of the top of the ring (2). The suturing mechanism and the operating mechanism are installed inside the arc-shaped shell (3). The sewing mechanism includes an inverted T-shaped frame (4) fixed to the inside of the arc-shaped housing (3), and an annular needle (5) is slidably connected to the arc-shaped through hole of the inverted T-shaped frame (4), and several teeth (6) are machined in the annular groove of the annular needle (5). Gears (7) are hinged to the upper and lower parts of the inside of the arc-shaped housing (3) through pins, and the gears (7) mesh with the teeth (6) of the annular needle (5). A ratchet (9) is provided on the outer side of the lower gear (7), and the ratchet (9) is rotatably connected to the inside of the arc-shaped housing (3) through a pin. The ratchet (9) and the gear (7) are connected by a connecting component.

2. The mucosal suture device for digestive endoscopy according to claim 1, characterized in that, The connecting assembly includes a first synchronous pulley (8) and a second synchronous pulley (10) which are fixedly connected to the shafts of the gear (7) and ratchet (9), respectively. The first synchronous pulley (8) and the second synchronous pulley (10) are rotatably connected by a synchronous belt (11). A guide wheel (12) is installed on the middle outer wall of the synchronous belt (11), and the guide wheel (12) is rotatably connected to the arc-shaped housing (3) by a pin.

3. The mucosal suture device for digestive endoscopy according to claim 1, characterized in that, The operating mechanism includes a slider (14) that is slidably connected to a pair of grooves in the arc-shaped housing (3). A toothed belt (13) is fixedly connected to the outer wall of the slider (14), and the teeth of the toothed belt (13) are engaged with the ratchet (9). A first connecting line (15) is fixedly connected to one end of the toothed belt (13) away from the ratchet (9), and the outer wall of the first connecting line (15) is slidably connected to the through holes of the arc-shaped housing (3) and the digestive endoscope tubing (1).

4. The mucosal suture device for digestive endoscopy according to claim 1, characterized in that, The sidewall of the ring (2) is fixed with a second connecting line (16), and the second connecting line (16) is slidably connected to the channel of the digestive endoscope tube (1).

5. The mucosal suture device for digestive endoscopy according to claim 1, characterized in that, The meshing ratio of the ratchet (9) to the toothed belt (13) is 1:

1.

6. The mucosal suture device for digestive endoscopy according to claim 1, characterized in that, The material of the annular needle (5) is medical stainless steel.

7. The mucosal suture device for digestive endoscopy according to claim 2, characterized in that, The outer surface of the guide wheel (12) is provided with anti-slip texture.

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