Application of endoscopic continuous suture device in preparation of gastric plication suture medical instrument

Abstract

The application discloses an application of an endoscopic continuous suturing device in preparation of a gastric plication suturing medical instrument, and the endoscopic continuous suturing device comprises a suture wire with uniformly distributed barbs, a plurality of titanium clips and a pushing device, the suture wire is 6-10 cm long, and the two ends of the suture wire are respectively provided with a front end connecting ring and a rear end connecting ring; a sheath pipe is arranged at the position close to the rear end connecting ring of the suture wire; the titanium clip is used for clamping and fixing the gastric mucosa tissue and the suture wire; the pushing device is used for tightening the suture wire and comprises a traction steel wire, an inner push tube and an outer sheath tube which are sleeved from inside to outside and slide; a metal hook is arranged at the front end of the traction steel wire; two operation handles are arranged at the rear end of the pushing device and are used for respectively controlling the inner push tube and the traction steel wire to move forward and backward. The gastric mucosa is sutured by the barbed suture wire, the long-term stability of the gastric wall folding is ensured, the barbed suture wire cooperates with the titanium clip to realize step-by-step pre-tightening, and the gastric cavity volume can be accurately controlled.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to the application of an endoscopic continuous suturing device in the preparation of a gastric folding suturing medical device. Background Technology

[0002] With the high incidence of digestive system-related diseases such as obesity and gastroesophageal reflux disease (GERD), endoscopic minimally invasive treatments have become one of the preferred clinical treatment options due to their advantages of minimal trauma, rapid recovery, and fewer complications. Among them, endoscopic sleeve gastroplasty (ESG) is gradually becoming one of the preferred endoscopic weight loss options in clinical practice due to its advantages of being minimally invasive, having a rapid recovery, and having a low incidence of complications.

[0003] The core principle of endoscopic gastric folding (ESG) for weight loss is to continuously suture and fold the anterior and posterior walls of the stomach using endoscopic manipulation, reshaping the stomach cavity. This reduces stomach volume, limiting food intake, and alters the gastric emptying pathway, enhancing satiety and ultimately achieving long-term weight loss. Clinical data shows that the overall weight loss rate after 5 years can still reach 11.8%, and it can significantly improve obesity-related comorbidities such as hypertension and diabetes. Its long-term efficacy and safety have been widely validated. Compared with traditional surgical weight loss procedures such as laparoscopic sleeve gastrectomy (LSG) and gastric bypass surgery (LRYGB), ESG does not require abdominal opening or removal of gastric tissue, resulting in lower perioperative risks. It also avoids serious complications that may arise from surgery, such as anastomotic leakage and malabsorption, making it suitable for individuals with low tolerance for surgical trauma.

[0004] Despite the significant advantages of ESG, existing gastric folding suture instruments and techniques used in clinical practice still have many shortcomings, which seriously restrict the accuracy of surgery, the stability of weight loss results, and long-term prognosis. Summary of the Invention

[0005] This invention provides the application of an endoscopic continuous suturing device in the preparation of gastric fold suturing medical devices. By suturing the gastric mucosa with barbed sutures, the long-term stability of the gastric wall folds is ensured. The barbed sutures, together with titanium clips, can achieve step-by-step pre-tightening, allowing for precise control of the gastric cavity volume.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: The application of an endoscopic continuous suturing device in the preparation of gastric folding suture medical devices includes a suture with barbs evenly distributed, several titanium clips, and a pushing device. The suture is 6-10 cm long, with a front connecting ring and a rear connecting ring at both ends. A sheath is provided near the rear connecting ring of the suture. The titanium clips are used to clamp and fix the gastric mucosa tissue and the suture. The pushing device is used to tighten the suture and includes a traction wire, an inner pushing tube, and an outer sheath that slide from the inside to the outside. The front end of the traction wire is provided with a metal hook, and the rear end of the pushing device is provided with two operating handles to control the back-and-forth movement of the inner pushing tube and the traction wire, respectively.

[0007] Furthermore, the outer diameter of the sheath is between the inner diameter and the outer diameter of the inner push tube.

[0008] Furthermore, the tip of the barb faces the front end of the suture.

[0009] Furthermore, the titanium clip includes an operating part and a clamping part. The clamping part is composed of two opposing clamping arms, which, when closed, form a slit structure through which the suture thread passes.

[0010] Furthermore, the clamping arm sidewall of the slit structure has serrated protrusions.

[0011] Furthermore, the metal hook is fixedly connected to the traction steel wire, with the hook tip facing the rear end of the traction steel wire.

[0012] Furthermore, the inner push tube is a metal spring tube.

[0013] Furthermore, the suture is a medical non-absorbable suture.

[0014] Furthermore, there are two sheaths, which are fitted onto the suture line close to each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses barbed sutures, titanium clips, and an advance device to suture and fix the gastric mucosa, ensuring the long-term stability of the gastric wall folds. The invention can determine the suture path (i.e., adjust the gastric fold range and tension) according to the patient's gastric cavity shape and weight target. Step-by-step pre-tightening can be performed during suture, avoiding the excessive or insufficient folding caused by traditional one-time tightening. This invention is also applicable to tissue suturing and repair in endoscopic surgeries of natural cavities such as urology and gynecology. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the suture and the pushing device; Figure 2 This is a schematic diagram of gastric suturing. Figure 3 This is a schematic diagram of the titanium clip structure; In the diagram: 1-suture, 11-barb, 12-front connecting ring, 13-rear connecting ring, 14-skin cannula, 2-titanium clip, 21-operating part, 22-clamping part, 23-serrated protrusion, 3-pushing device, 31-traction wire, 32-inner push tube, 33-outer sheath tube, 34-metal hook, 35-operating handle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0020] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] like Figure 1As shown, the endoscopic continuous suturing device is used in the preparation of gastric folding suturing medical devices. The endoscopic continuous suturing device includes a suture 1 with barbs 11 evenly distributed, several titanium clips 2, and a pushing device 3. The suture 1 has a front connecting ring 12 and a rear connecting ring 13 at both ends, and a sheath 14 is located near the rear connecting ring 13. The pushing device 3 includes a traction wire 31, an inner pushing tube 32, and an outer sheath 33 that slide from the inside out. The traction wire 31 has a metal hook 34 at its front end, which is fixedly connected to the traction wire 31, with the hook tip facing the rear end of the traction wire 31. The pushing device 3 has two operating handles 35 at its rear end, which control the back-and-forth movement of the inner pushing tube 32 and the traction wire 31, respectively. Preferably, the inner pushing tube 32 is a metal spring tube, and the inner diameter of the inner pushing tube 32 is smaller than the outer diameter of the sheath 14, and the inner diameter of the sheath 14 is smaller than the outer diameter of the inner pushing tube 32.

[0022] The specific usage method of this application is as follows. It should be noted that the steps other than the suturing operation not specifically described in the embodiments, as well as the specific structures of various instruments not specifically described, can all be implemented by the content disclosed in the prior art.

[0023] The suture length is 6-10cm, such as Figure 2 As shown, the device is inserted through the endoscopic forceps channel, starting from the lower segment of the greater curvature of the gastric body, and the gastric mucosa is sutured from the anterior wall to the posterior wall of the gastric body. Starting from the first row, a titanium clip A is used to clamp and fix the front end connecting ring 12 of the suture 1 to the anterior wall of the lower segment of the gastric body. The operator operates the endoscope and the titanium clip release device, and at intervals of 1-2 cm, multiple titanium clips 2 (B, C, D...) are used to fix the suture to the gastric wall in sequence, all the way to the posterior wall of the gastric body. Finally, the traction wire and the internal push tube are sent to the end of the suture 1 through the operating handle, and the metal hook 34 is extended to hook the rear end connecting ring 13 of the suture 1 and pull it into the internal push tube 32. The internal push tube 32 moves forward to push the sheath 14, tightening the suture and folding the gastric cavity.

[0024] Since the suture 1 has barbs 11 distributed on it, preferably, the tips of the barbs 11 face the front end of the suture 1 and move in the opposite direction to the tightening direction of the suture 1. When tightening, the barbs 11 can smoothly pass through the sheath 14, and since the barbs 11 are locked into the rear end of the sheath 14 and cannot be retracted, the suture is fixed. Preferably, there are two sheaths 14, which are fitted onto the suture 1 close to each other to increase friction and tightness and reduce the chance of the barbs slipping off.

[0025] This application also enables step-by-step pre-tightening, facilitating real-time observation of the gastric fold suture and timely adjustments. The pre-tightening operation method is as follows: After fixing the distal titanium clip A, for each titanium clip 2, control the metal hook 34 of the traction wire 31 to hook the rear connecting ring 13 of the suture 1 for traction, so that the gastric mucosa clamped by the titanium clip 2 is tightened first. Each titanium clip 2 and the adjacent barb 11 can form a locking structure to prevent retraction; repeat this step until the gastric mucosa of the anterior and posterior walls is completely sutured and pre-tightened, then use the metal hook 34 to hook the rear connecting ring 13 of the suture 1, and operate the handle 35 to control the internal push tube 32 to move forward, pushing the sheath 14 forward. The sheath 14 locks with the barb 11 for final tightening and fixation. Finally, the excess suture 1 can be cut; after the first row is sutured, the second row is sutured from the anterior wall to the posterior wall of the gastric body at 2cm intervals, and the above suture steps are repeated until the gastric fundus is sutured; finally, the metal hook 34 is withdrawn and the push device is removed. During the suturing of the stomach wall during surgery, the stomach cavity should not be filled with too much gas, so that the titanium clip 2 can clamp more gastric mucosa and fix it more securely.

[0026] Titanium clip 2 is used to clamp and fix the gastric mucosal tissue and suture 1, such as Figure 3 As shown, the titanium clip 2 includes an operating part 21 and a clamping part 22. The clamping part 22 is composed of two opposing clamping arms, which, when closed, form a slit structure through which the suture thread passes. The titanium clip 2 used in this application has a structure similar to that of the titanium clip 2 in the prior art, and the similarities will not be repeated. The difference is that the clamping arm sidewalls of the slit structure have serrated protrusions 23, which can better lock the barbs 11.

[0027] Preferably, the suture 1 is a medical non-absorbable suture. The gastric fold suture state lasts for about 2-6 months, during which the stomach is in a shrunken state. Once the patient's weight decreases and reaches the target, the suture 1 can be cut and removed, so that the stomach can return to its original state. This achieves reversible gastric fold suture, which can meet the weight loss needs while ensuring stomach health.

[0028] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. The application of an endoscopic continuous suturing device in the preparation of gastric folding suturing medical devices, characterized in that: The endoscopic continuous suturing device includes a suture with barbs (11) evenly distributed, several titanium clips and a pushing device. The suture is 6-10cm long and has a front connecting ring (12) and a rear connecting ring (13) at both ends. A sheath (14) is provided near the rear connecting ring (13) of the suture. The titanium clips are used to clamp and fix the gastric mucosa tissue and the suture. The pushing device is used to tighten the suture and includes a traction wire (31) that slides from the inside to the outside, an inner push tube (32) and an outer sheath (33). The front end of the traction wire (31) is provided with a metal hook (34). The rear end of the pushing device is provided with two operating handles (35) to control the inner push tube (32) and the traction wire (31) to move back and forth, respectively.

2. The application of the endoscopic continuous suturing device according to claim 1 in the preparation of gastric folding suturing medical devices, characterized in that: The outer diameter of the sheath (14) is between the inner diameter and the outer diameter of the inner push tube (32).

3. The application of the endoscopic continuous suturing device according to claim 1 in the preparation of gastric folding suturing medical devices, characterized in that: The tip of the barb (11) faces the front end of the suture.

4. The application of the endoscopic continuous suturing device according to claim 3 in the preparation of gastric folding suturing medical devices, characterized in that: The titanium clip includes an operating part (21) and a clamping part (22). The clamping part (22) is composed of two opposing clamping arms. When the two clamping arms are closed, they form a slit structure through which the suture thread passes.

5. The application of the endoscopic continuous suturing device according to claim 4 in the preparation of gastric folding suturing medical devices, characterized in that: The clamping arm sidewall of the slit structure has serrated protrusions (23).

6. The application of the endoscopic continuous suturing device according to claim 3 in the preparation of gastric folding suturing medical devices, characterized in that: The metal hook (34) is fixedly connected to the traction wire (31), with the hook tip facing the rear end of the traction wire (31).

7. The application of the endoscopic continuous suturing device according to claim 3 in the preparation of gastric folding suturing medical devices, characterized in that: The inner push tube (32) is a metal spring tube.

8. The application of the endoscopic continuous suturing device according to claim 3 in the preparation of gastric folding suturing medical devices, characterized in that: The suture is a medical non-absorbable suture.

9. The application of the endoscopic continuous suturing device according to claim 3 in the preparation of gastric folding suturing medical devices, characterized in that: There are two sheaths (14), which are fitted onto the suture line close to each other.

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