Soft tissue closing clamp for superfine endoscope

Abstract

The invention discloses a soft tissue closing clamp for a superfine endoscope. The soft tissue closing clamp comprises a clamp body, a storage tube, a mandrel, a connecting sheath tube and a conveying structure. The clamp comprises a connecting base, a first clamping piece and a second clamping piece are arranged at the two ends of the front portion of the connecting base respectively, a first elastic piece and a second elastic piece are arranged on the two sides of the connecting base respectively, the rear portion of the clamp is sleeved with the storage pipe, a first side wing and a second side wing are arranged on the two sides of the rear portion of the storage pipe respectively, the mandrel is inserted into the rear side of the interior of the storage pipe, and a stepped shaft is arranged on the rear side of the mandrel. The connecting sheath tube is connected to the outer wall of the rear portion of the mandrel in a sleeving mode, a third opening groove is formed in the outer wall of the front portion of the connecting sheath tube, a third limiting elastic piece is arranged on the front side of the third opening groove, and the third limiting elastic piece is elastically connected with the side wall of the rear side of the step on the mandrel in a clamped mode. And the closing of the clamp and the separation of the storage tube and the connecting sheath tube are controlled by sliding the push-pull handle. The device is simple in structure and small in product size space, tissue can be closed through a superfine endoscope instrument channel, and the tissue can be pre-clamped again for multiple times.

Description

Technical Field

[0001] The invention relates to the technical field of endoscopic medical instruments, in particular to a soft tissue closing clip for an ultra-thin endoscope. Background Art

[0002] If diseased tissue is found during endoscopy of the digestive tract, minimally invasive treatment is required under endoscopy. Soft tissue closure clamps are a minimally invasive surgical instrument that is often used to close wound tissue in patients, such as closing wounds after resection of diseased tissue in the digestive tract to prevent wound perforation. Soft tissue closure clamps can be delivered to the surgical site in the patient's body through the endoscopic clamp channel, and the clamping operation is performed outside the body to complete tissue closure. Usually, after the soft tissue closure clamp closes the tissue, the local tissue inflammation process forms granulomas, which fall off on their own and are discharged from the body through the digestive tract. This makes the surgery have the advantages of less damage, avoiding delayed perforation of the wound, fewer complications, and definite efficacy.

[0003] At present, the gastroscopes used in clinical gastroscopy are ultra-fine gastroscopes and ordinary gastroscopes. The ultra-fine gastroscope, also known as the ultra-fine transnasal gastroscope, has a diameter of only about 5 mm, which is half the diameter of the ordinary gastroscope. The ultra-fine gastroscope can be inserted from the nostrils, and does not touch the root of the tongue during the process of entering the stomach, minus the vomiting feeling caused by the throat reflex, greatly reducing the patient's pain, and avoiding the defects of vomiting, pain and fear in many patients during ordinary gastroscopy. The ordinary gastroscope has a thicker outer diameter and enters the esophagus and stomach through the mouth, which is somewhat painful. Some people will experience nausea, vomiting, regurgitation and other discomforts. The outer diameter of the ordinary gastroscope is 10-11 mm, and the inner diameter of its instrument channel is 2.8 mm, which can pass through commonly used treatment instruments. Because the instrument channel of the ultra-fine gastroscope is only 2.2 mm, many endoscopic accessories cannot pass through the instrument channel of the endoscope, so it cannot be used for the treatment of gastric and esophageal diseases. The outer diameter of the soft tissue closure clips currently used in clinical practice is between 2.5mm and 2.7mm, and the instrument channel of the endoscope to which it is applicable must be greater than or equal to 2.8mm. Therefore, the soft tissue closure clips currently used in clinical practice can only be used for minimally invasive surgery with ordinary gastroscopes, and cannot be used clinically with ultra-thin transnasal gastroscopes. Minimally invasive treatment under ultra-thin transnasal gastroscopes cannot be carried out clinically. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a soft tissue closure clip for ultra-thin endoscope.

[0005] In order to solve the above problems, the technical solution of the present invention is as follows:

[0006] A clip, the clip comprising a connecting seat, two ends of the front portion of the connecting seat are respectively fixedly connected with a first clip and a second clip, and two sides of the connecting seat are respectively fixedly connected with a first spring and a second spring;

[0007] A storage tube, the storage tube is sleeved on the rear part of the clip, and the two sides of the rear part of the storage tube are respectively provided with a side wing 1 and a side wing 2, and the side wing 1 and the side wing 2 can be bent 90 degrees toward the inside of the storage tube;

[0008] A mandrel, the mandrel being inserted into the inner rear side of the storage tube, and a stepped shaft being provided on the rear side of the mandrel;

[0009] A connecting sheath tube, wherein the connecting sheath tube is sleeved on the rear outer wall of the core shaft, the front outer wall of the connecting sheath tube is provided with an opening groove three, and the front side of the opening groove three is provided with a spring piece three;

[0010] A conveying structure, wherein the conveying structure is arranged at the rear side of the connecting sheath tube, and the conveying structure comprises a push-pull handle, a spring hose, a guide wire, a hook and a boss. The front end of the push-pull handle is fixedly connected to the spring hose, a guide wire is passed through the interior of the push-pull handle, a hook is provided on the front side of the interior of the storage tube, and a boss is provided at the rear end of the hook. One end of the guide wire is fixedly connected to the push-pull handle, and the other end passes through the spring hose, the connecting sheath tube, the core shaft and the storage tube in sequence, and the other end of the guide wire is fixedly connected to the hook.

[0011] Furthermore, an opening groove 1 and an opening groove 2 are respectively provided on both sides of the front portion of the outer wall of the core shaft, and the opening groove 1 and the opening groove 2 are respectively clamped with the side wing 1 and the side wing 2, and the opening groove 1 and the opening groove 2 can respectively accommodate the side wing 1 and the side wing 2 after being bent 90 degrees, and the front sides of the opening groove 1 and the opening groove 2 are respectively provided with opening groove end faces, and the side wing 1 and the side wing 2 are respectively bent 90 degrees and connected with the opening groove end faces and the opening groove 1 and the opening groove 2.

[0012] Furthermore, the rear side of the spring piece three abuts against the side wall, and the rear side of the connecting sheath tube is provided with a threaded tube structure.

[0013] Furthermore, a stepped hole 1 is provided on one side of the interior of the storage tube, and a stepped hole 2 is provided on the other side. The diameter of the stepped hole 1 is smaller than that of the stepped hole 2, and a clamping end is provided at the connection between the stepped hole 1 and the stepped hole 2.

[0014] Furthermore, the diameter of the core shaft is greater than the diameter of the stepped shaft, a side wall is provided on the rear side of the stepped shaft, and an inner end surface is provided at the internal connection between the core shaft and the stepped shaft.

[0015] Furthermore, the diameter of the boss is larger than the inner diameter of the stepped shaft, the diameter of the boss is smaller than the inner diameter of the core shaft, the spring hose is connected to the threaded tube by laser welding, and the hook is hung on the rear of the connecting seat.

[0016] The advantages of the present invention compared with the prior art are:

[0017] 1. The present invention provides a soft tissue closure clip for ultra-thin endoscopes, which has an exquisite structural design. Through the organic combination of the clip, the storage tube, the core shaft, the connecting sheath tube and the delivery system, flexible operation in a narrow space is achieved. The closure clip can easily pass through the instrument channel (only 2.2 mm) of the ultra-thin endoscope, greatly broadening the application scope of minimally invasive surgery. During the operation, the doctor only needs to control the closure of the clip and the separation of the storage tube and the connecting sheath tube by sliding the push-pull handle. The operation is simple and convenient, which greatly improves the surgical efficiency and success rate. In addition, the closure clip can re-pre-clamp the tissue multiple times, providing doctors with more operational flexibility and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a soft tissue closing clip for ultra-thin endoscope.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle clamp.

[0020] Figure 3 yes Figure 1 Cross-sectional structure diagram of the middle storage tube.

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure.

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure of the central shaft.

[0023] Figure 6 yes Figure 1 Schematic diagram of the structure of the intermediate sheath.

[0024] Figure 7 The present invention is a schematic structural diagram of an ultra-thin endoscope soft tissue closing clip in an open state.

[0025] Figure 8 The present invention is a schematic structural diagram of a soft tissue closing clip for ultra-thin endoscope in a pre-closing state.

[0026] Fig. 9 The invention is a longitudinal cross-sectional schematic diagram of an ultra-thin endoscope soft tissue closing clamp in a fully closed state.

[0027] Fig.10 The diagram is a longitudinal cross-sectional diagram of a soft tissue closing clamp for ultra-thin endoscope in a completely closed state according to the present invention.

[0028] Fig.11 It is a structural schematic diagram of a state in which a storage tube and a connecting sheath tube are completely separated after a soft tissue closing clamp for an ultra-thin endoscope of the present invention is completely closed.

[0029] As shown in the figure: 1. Clip; 11. Spring piece 1; 12. Spring piece 2; 13. Connecting seat; 14. Clip piece 1; 15. Clip piece 2;

[0030] 2. Storage tube; 21. Snap-on end; 22. Side wing 1; 23. Side wing 2; 24. Step hole 1; 25. Step hole 2;

[0031] 3. Mandrel; 31. Opening groove 1; 32. Opening groove end face; 33. Side wall; 34. Step shaft; 35. Inner end face; 36. Opening groove 2;

[0032] 4. Connecting sheath tube; 41. Spring piece three; 42. Threaded tube;

[0033] 5. Conveying structure; 51. Push-pull handle; 52. Spring hose; 53. Guide wire; 54. Hook; 541. Boss. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figures 1 to 6 As shown, this embodiment proposes a soft tissue closing clamp for ultra-fine endoscope, including a clamp 1, a storage tube 2, a core shaft 3, a connecting sheath tube 4 and a conveying structure 5, the clamp 1 includes a connecting seat 13, the front two ends of the connecting seat 13 are respectively fixedly connected with a clamp piece 14 and a clamp piece 2 15, the two sides of the connecting seat 13 are respectively fixedly connected with a spring piece 11 and a spring piece 2 12, the storage tube 2 is sleeved on the rear of the clamp 1, the two sides of the rear of the storage tube 2 are respectively provided with a side wing 1 22 and a side wing 2 23, the side wing 1 22 and the side wing 2 23 can be bent 90° toward the inner side of the storage tube 2, the core shaft 3 is inserted into the inner rear side of the storage tube 2, the rear side of the core shaft 3 is provided with a stepped shaft 34, the connecting sheath tube 4 is sleeved on the rear outer wall of the core shaft 3, the front outer wall of the connecting sheath tube 4 is provided with an opening groove three, and the front side of the opening groove three is provided with a spring piece three 41.

[0038] Embodiment 2:

[0039] The scheme in Example 1 is further introduced below in combination with a specific working method, as described below for details: a stepped hole 1 24 is provided on one side of the interior of the storage tube 2, and a stepped hole 25 is provided on the other side, the diameter of the stepped hole 1 24 is smaller than that of the stepped hole 25, a clamping end 21 is provided at the connection between the stepped hole 1 24 and the stepped hole 25, an opening groove 1 31 and an opening groove 2 36 are respectively provided on both sides of the front part of the outer wall of the core shaft 3, the opening groove 1 31 and the opening groove 2 36 are respectively clamped with the side wing 1 22 and the side wing 2 23, the opening groove 1 31 and the opening groove 2 36 can respectively accommodate the side wing 1 22 and the side wing 2 23 after being bent 90°, the front sides of the opening groove 1 31 and the opening groove 2 36 are respectively provided with opening groove end faces 32, the side wing 1 22 and the side wing 2 23 are respectively bent 90 degrees and are connected with the opening groove end faces 32 and the opening groove 1 31 and the opening groove 2 36.

[0040] Embodiment 3:

[0041] The scheme in Example 2 is further introduced below in combination with the specific working method, as described below for details: the diameter of the core shaft 3 is larger than the diameter of the stepped shaft 34, the rear side of the stepped shaft 34 is provided with a side wall 33, the internal connection between the core shaft 3 and the stepped shaft 34 is provided with an inner end face 35, the rear side of the spring piece 3 41 abuts against the side wall 33, and the rear side of the connecting sheath 4 is provided with a threaded tube 42 structure.

[0042] Embodiment 4:

[0043] The scheme in Example 3 is further introduced below in combination with the specific working method, as described below for details: the conveying structure 5 is arranged on the rear side of the connecting sheath 4, and the conveying structure 5 includes a push-pull handle 51, a spring hose 52, a guide wire 53, a hook 54 and a boss 541. The front end of the push-pull handle 51 is fixedly connected to the spring hose 52, and the guide wire 53 is passed through the inside of the push-pull handle 51. A hook 54 is provided on the front side of the interior of the storage tube 2, and a boss 541 is provided at the rear end of the hook 54. One end of the guide wire 53 is fixedly connected to the push-pull handle 51, and the other end passes through the spring hose 52, the connecting sheath 4, the core shaft 3 and the storage tube 2 in sequence. The other end of the guide wire 53 is fixedly connected to the hook 54, the diameter of the boss 541 is larger than the inner diameter of the stepped shaft 34, and the diameter of the boss 541 is smaller than the inner diameter of the core shaft 3. The spring hose 52 is laser welded to the threaded tube 42, and the hook 54 is hung on the rear part of the connecting seat 13.

[0044] For specific use, refer to Figures 7 to 11As shown, when the push-pull handle 51 in the conveying structure 5 is pulled backward, the clip 1 moves toward the inside of the storage tube 2 under the pull of the hook 54, and the clip piece 1 14 and the clip piece 2 15 of the clip 1 begin to gradually close. Since the side wing 1 22 and the side wing 23 of the storage tube 2 are bent 90 degrees and respectively buckled into the opening groove 1 31 and the opening groove 2 36 provided on the core shaft 3, the storage tube 2 and the core shaft 3 are fixed, and the push-pull handle 51 in the conveying structure 5 is continued to be pulled. 1. When the rear end boss 541 of the hook 54 abuts against the inner end surface 35 of the core shaft 3, the clip 1 14 and the second clip 15 of the clip 1 are closed to each other, and the spring piece 1 11 and the second spring piece 12 of the clip 1 are elastically contracted inside the stepped hole 1 24 of the shrink tube 2. At this time, if the push-pull handle 51 in the conveying structure 5 is continued to be pulled and resistance is felt, the operator stops pulling the push-pull handle 51, and the clip 1 14 and the second clip 15 of the clip 1 are pre-closed, as shown in FIG. Figure 8 and Fig. 9 As shown, if the clinical operator finds that the closing position of the target tissue to be closed is incorrect, the push-pull handle 51 can be pushed forward, and the spring piece 11 and the spring piece 2 12 of the clip move forward from the stepped hole 1 24 of the storage tube 2. At this time, the clip 1 can be opened again, as shown in FIG. Figure 7 shown.

[0045] When the clinical operator determines that the target tissue to be closed is correct, he continues to pull the push-pull handle 51 in the conveying structure 5 backward, and the rear end boss 541 of the hook 54 abuts against the inner end surface 35 of the core shaft 3. Since the core shaft 3 receives the axial pulling force of the hook 54, the core shaft 3 moves backward. When the pulling force reaches a certain value, the side wing 1 22 and the side wing 23 of the receiving tube 2 after bending 90° are forced to straighten and deform and are pulled out from the opening groove 1 31 and the opening groove 2 36 of the core shaft 3. The receiving tube 2 and the connecting sheath tube 4 are separated from each other. The hook 54 is also forced to straighten due to the pulling force and is permanently separated from the connecting seat 13 of the clamp 1. Fig.11 At this time, the clip 1 is permanently closed. When the clip 1 is permanently closed, the spring piece 11 and the spring piece 2 of the clip 1 enter the step hole 25 from the step hole 1 24 of the storage tube 2 and abut and get stuck with the clamping end 21 at the intersection of the step hole 1 24 and the step hole 25, preventing the clip 1 from moving to the front of the storage tube 2 and opening again. After the clip 1 closes the soft tissue, the rear end of the clip 1 is stored in the storage tube 2. The clip 1 is permanently closed and cannot be opened again. Fig.10 shown.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0048] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A soft tissue closure clip for ultra-thin endoscope, characterized in that: include: A clip (1), the clip (1) comprising a connecting seat (13), two ends of the front portion of the connecting seat (13) being respectively fixedly connected with a first clip (14) and a second clip (15), and two sides of the connecting seat (13) being respectively fixedly connected with a first spring piece (11) and a second spring piece (12); A storage tube (2), the storage tube (2) being sleeved on the rear of the clip (1), and the rear sides of the storage tube (2) are respectively provided with a first wing (22) and a second wing (23), and the first wing (22) and the second wing (23) can be bent 90 degrees toward the inside of the storage tube (2); A core shaft (3), the core shaft (3) being inserted into the inner rear side of the storage tube (2), and a stepped shaft (34) being provided on the rear side of the core shaft (3); A connecting sheath tube (4), the connecting sheath tube (4) being sleeved on the rear outer wall of the core shaft (3), the front outer wall of the connecting sheath tube (4) being provided with an opening groove three, and the front side of the opening groove three being provided with a spring piece three (41); A conveying structure (5), the conveying structure (5) is arranged on the rear side of the connecting sheath tube (4), the conveying structure (5) comprises a push-pull handle (51), a spring hose (52), a guide wire (53), a hook (54) and a boss (541), the front end of the push-pull handle (51) is fixedly connected to the spring hose (52), the guide wire (53) is passed through the interior of the push-pull handle (51), the front side of the interior of the storage tube (2) is provided with a hook (54), the rear end of the hook (54) is provided with a boss (541), one end of the guide wire (53) is fixedly connected to the push-pull handle (51), and the other end passes through the spring hose (52), the connecting sheath tube (4), the core shaft (3) and the storage tube (2) in sequence, and the other end of the guide wire (53) is fixedly connected to the hook (54).

2. The ultra-thin endoscope soft tissue closing clip according to claim 1, characterized in that: A stepped hole 1 (24) is provided on one side of the interior of the storage tube (2), and a stepped hole 2 (25) is provided on the other side. The diameter of the stepped hole 1 (24) is smaller than that of the stepped hole 2 (25). A clamping end (21) is provided at the connection between the stepped hole 1 (24) and the stepped hole 2 (25).

3. The soft tissue closing clip for ultra-thin endoscope according to claim 2, characterized in that: An opening groove 1 (31) and an opening groove 2 (36) are respectively provided on both sides of the front part of the outer wall of the core shaft (3); the opening groove 1 (31) and the opening groove 2 (36) are respectively connected with the side wing 1 (22) and the side wing 2 (23); the opening groove 1 (31) and the opening groove 2 (36) can respectively receive the side wing 1 (22) and the side wing 2 (23) after being bent by 90 degrees; the front sides of the opening groove 1 (31) and the opening groove 2 (36) are respectively provided with an opening groove end face (32); the side wing 1 (22) and the side wing 2 (23) are respectively bent by 90 degrees and are matched with the opening groove end face (32) and the opening groove 1 (31) and the opening groove 2 (36).

4. The soft tissue closing clip for ultra-thin endoscope according to claim 3, characterized in that: The diameter of the core shaft (3) is greater than the diameter of the stepped shaft (34); a side wall (33) is provided on the rear side of the stepped shaft (34); and an inner end surface (35) is provided at the internal connection between the core shaft (3) and the stepped shaft (34).

5. The soft tissue closing clip for ultra-thin endoscope according to claim 4, characterized in that: The rear side of the spring piece three (41) abuts against the side wall (33), and the rear side of the connecting sheath tube (4) is provided with a threaded tube (42) structure.

6. The soft tissue closing clip for ultra-thin endoscope according to claim 5, characterized in that: The diameter of the boss (541) is larger than the inner diameter of the stepped shaft (34), and the diameter of the boss (541) is smaller than the inner diameter of the core shaft (3). The spring hose (52) is connected to the threaded tube (42) by laser welding, and the hook (54) is hung on the rear of the connecting seat (13).

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