Endoscope mucous membrane closing clamp with barbed hooks on clamp arms
By designing an endoscopic mucosal closure clip with barb hook in the clamp arm, the acute angle and barb structure of the clamp arm are used to solve the problem of easy slippage of traditional metal clips, achieving stable clamping and traction of large-scale mucosal defects, improving the reliability and safety of surgical operations.
Patent Information
- Application Number
- CN202422085903.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Traditional endoscopy uses metal clamps to easily slip when closing a large-scale mucosal defect, making it difficult to achieve stable clamping and traction, resulting in difficulty in surgical operation.
A endoscopic mucosal closure clip with a barb hook with a clamp arm is designed. A hook is set up at the distal end of the clamp hook to take the barb. The clamp hook and the clamp arm form an acute angle to enhance the tissue grip ability and traction force, and stable clamping and traction are achieved through the cooperation of the two clamp hooks.
It effectively overcomes the problem that traditional metal clamps are easy to slip, and can stably clamp the edge of one side of the mucosal defect and pull it to the opposite side, achieving a large-scale closure of mucosal defects, improving surgical efficiency and safety, and reducing damage to the digestive tract mucosa.
Smart Images
Figure CN223126586U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of digestive endoscope instruments, and particularly relates to an endoscopic mucosal closing clip with barbed hooks on the forceps arms. Background Art
[0002] The metal clip for endoscope is an important tool for digestive endoscopy surgery, which is used to close partial or full-thickness defects of the digestive tract mucosa, and can also be used for hemostasis of digestive tract bleeding.
[0003] Generally, when using a metal clip to close a defect of the digestive tract mucosa, the gas in the digestive tract lumen can be aspirated through the endoscope to reduce the air pressure tension stretching the digestive tract mucosa, so that the mucosa on both sides of the defect approaches, facilitating clamping and closing. However, when the defect range is large, close to or exceeding the wingspan of the metal clip, it is difficult to clamp and close the mucosa on both sides of the defect by retracting and extending the forceps arms of the metal clip. A possible operation method is to first clamp the mucosa on one side of the defect, pull it to the edge of the mucosa on the opposite side of the defect, then open the metal clip, and try to make the mucosa on this side hang on the forceps arm on the same side as much as possible, and clamp the mucosa on the opposite side of the defect with the opened forceps arm on the other side, so as to achieve closing. However, the tip of the forceps arm of the traditional metal clip protrudes at an obtuse angle with the main body of the forceps arm, and it is easy to slip when clamping tissues or closing defects, and it is difficult to achieve the hanging of the mucosa tissue on one side after opening on the metal clip.
[0004] Therefore, a metal clip is needed, which can: clamp the edge of the mucosal defect on one side, pull it to the opposite side, open after making the large defect span smaller than the wingspan of the metal clip, and one forceps arm can still stably hold the mucosal tissue on the same side, and then clamp the mucosal tissue on the opposite side with the forceps arm on the opposite side, so as to close a large-range mucosal defect. In view of this, this case is generated. Summary of the Utility Model
[0005] The utility model makes improvements in view of the above problems existing in the prior art, that is, the technical problem to be solved by the utility model is to provide an endoscopic mucosal closing clip with barbed hooks on the forceps arms.
[0006] To achieve the above object, the technical solution adopted by the utility model is: an endoscopic mucosal closing clip with barbed hooks on the forceps arms, which includes a control part, a connecting part and a metal clip connected in sequence. The metal clip includes two oppositely arranged clamping hooks. The control part drives the two clamping hooks to open or close through a connecting wire in the connecting part. Both clamping hooks include a forceps arm and a clamping hook connected to each other. A hooking barb is arranged at the distal end of the clamping hook of one of the clamping hooks; in each clamping hook, the distal end of the clamping hook forms an angle α with the forceps arm, and the angle α is an acute angle.
[0007] Further, the two clamping hooks are respectively a first clamping hook and a second clamping hook. The first clamping hook includes a first clamping arm and a first clamping hook which are connected to each other, and the first clamping hook faces the inner side of the metal clip. The second clamping hook includes a second clamping arm and two second clamping hooks which are connected to each other. The two second clamping hooks are distributed at the left and right ends of the second clamping arm and both face the inner side of the metal clip. A hooking barb is provided at the distal end of each second clamping hook.
[0008] Further, the distal end of the second clamping hook is the hook tip of the clamping hook, and the hooking barb is located inside the hook tip of the clamping hook and extends obliquely upward toward the hook tip of the clamping hook.
[0009] Further, a plurality of convex grooves are provided on the inner side surface of the hook tip of the clamping hook, and the plurality of convex grooves are sequentially distributed in a stripe shape.
[0010] Further, the maximum opening angle of the two clamping hooks is 135°.
[0011] Further, the clamping hook and the clamping arm are of an integral structure.
[0012] Further, a smooth arc angle is provided at the outer end of the connection between the clamping hook and the clamping arm.
[0013] Further, the metal clip further includes a base, and the two clamping hooks are connected to the distal end of the base. The control part includes an operating handle, a control rod, a control finger ring, a control base and a control wire. One end of the operating handle is connected to one end of the control rod, the control finger ring is sleeved on the control rod, and the other end of the control rod is connected to the control wire through the control base. The connecting part includes a sheath tube and a connecting wire. One end of the connecting wire is connected to the control finger ring through the control wire, and the other end of the connecting wire is connected to the two clamping hooks of the metal clip.
[0014] Compared with the prior art, the utility model has the following effects: The utility model has a reasonable design. The stable clamping of tissues is realized through two oppositely arranged clamping hooks, and a hooking barb is arranged on one of the clamping hooks. Combined with the design that the upper clamping arm and the clamping hook form an acute angle, the tissue grasping ability and traction ability are improved, overcoming the defects of easy slippage and poor grasping ability of the existing metal clip. It can clamp the edge of the mucosal defect on one side and pull it to the opposite side, so that the large defect span is less than the wingspan of the metal clip after opening, and one clamping arm can still stably hold the mucosal tissue on the same side, and then the mucosal tissue on the opposite side is clamped by the clamping arm on the opposite side, so as to close a large range of mucosal defects. Description of the Drawings
[0015] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the utility model;
[0016] Figure 2 is a structural schematic diagram of the metal clip in the embodiment of the utility model;
[0017] Figure 3 It is a schematic perspective view of the second clamping hook in the embodiment of the present utility model.
[0018] In the figure:
[0019] 1 - metal clip; 2 - connecting part; 3 - control part; 10 - clamping hook; 11 - base; 101 - first clamping hook; 102 - second clamping hook; 1011 - first clamping arm; 1012 - first clamping hook; 1021 - second clamping arm; 1022 - second clamping hook; 10221 - hooking barb; 10222 - tip of the clamping hook; 10223 - convex groove; 21 - sheath tube; 22 - connecting guide wire; 31 - operating handle; 32 - control rod; 33 - control finger ring; 34 - control base; 35 - control wire. Detailed implementation manners
[0020] The following further describes the present utility model in detail with reference to the accompanying drawings and specific implementation manners.
[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0022] Such as Figures 1 to 3As shown in the figure, the endoscopic mucosal closure clip with barbed hooks on the forceps arms of the present utility model is used to assist in wound closure. It is an improvement based on the existing metal clip for endoscopy, including a metal clip 1 for clamping tissues, a connecting part 2 for passing through the working channel of the endoscope, and a control part 3 for attaching to the opening of the working channel of the endoscope. The three are connected in sequence. The metal clip 1 includes two oppositely arranged clamping hooks 10. The control part 3 drives the two clamping hooks 10 to open or close through the connecting wire 22 in the connecting part 2. Both clamping hooks 10 include a forceps arm and a forceps hook that are connected to each other. This part of the structure is prior art. This closure clip is improved on the basis of the existing metal clip for endoscopy. The specific improvement is as follows: A barbed hook 10221 is provided at the distal end of the forceps hook of one of the clamping hooks. In each clamping hook, the distal end of the forceps hook (i.e., the end of the forceps hook away from the base of the metal clip) forms an acute angle α with the forceps arm. When the tissue is re-opened after being clamped, the tissue is not likely to slip. The stable clamping of the tissue is achieved through two oppositely arranged clamping hooks. And one of the clamping hooks is provided with a barbed hook. Combined with the design of an acute angle between the upper forceps arm and the forceps hook, the tissue grasping ability and traction ability are improved, overcoming the defects of the existing metal clip being prone to slippage and having poor grasping ability. It can clamp the edge of the mucosal defect on one side and pull it to the opposite side, so that the large defect span is less than the wingspan of the metal clip after opening, and one forceps arm can still stably hold the mucosal tissue on the same side, thereby facilitating the other forceps arm to clamp the mucosal tissue on the opposite side, so as to close a large range of mucosal defects.
[0023] In this embodiment, the two clamping hooks 10 are respectively a first clamping hook 101 and a second clamping hook 102. The first clamping hook 101 and the second clamping hook 102 can approach or separate from each other under the drive of the control part 3, so as to achieve closing or opening.
[0024] In this embodiment, the first clamping hook 101 includes a first forceps arm 1011 and a first forceps hook 1012 that are connected to each other. The first forceps hook 1012 faces the inner side of the metal clip.
[0025] In this embodiment, the second clamping hook 102 is a hook structure, including a second forceps arm 1021 and two second forceps hooks 1022 that are connected to each other. The two second forceps hooks 1022 are distributed at the left and right ends of the second forceps arm 1021. Both second forceps hooks 1022 face the inner side of the metal clip. A barbed hook 10221 is provided at the distal end of each second forceps hook 1022, so that the second clamping hook has a stronger traction ability and reduces the possibility of tissue slipping off the second clamping hook. When closed, the first forceps hook 1012 can be adapted and stably positioned in the gap between the two second forceps hooks 1022.
[0026] In this embodiment, the second clamp hook 1022 can be divided into a clamp hook tip 10222 and a hook barb 10221. Specifically, the distal end of the second clamp hook 1022 is the clamp hook tip 10222, and the hook barb 10221 is located on the inner side of the clamp hook tip 10222, and the hook barb 10221 extends obliquely upward from the clamp hook tip 10222. Further, the inner side surface of the clamp hook tip 10222 is provided with a plurality of convex grooves 10223, and the plurality of convex grooves 10223 are sequentially distributed in stripes. The hook barb 10221 and the convex groove 10223 can exert resistance to the junction between the second clamp hook 102 and the digestive tract mucosa, limit the position, and reduce the probability of unhooking.
[0027] In this embodiment, the maximum opening angle of the two clamping hooks 10 is 135°, which provides a sufficient opening and closing range to accommodate tissues of different sizes.
[0028] In this embodiment, the clamp hook and the clamp arm are an integrated structure, which enhances the structural strength of the metal clamp holding hook.
[0029] In this embodiment, the outer end of the connection between the clamp hook and the clamp arm is provided with a smooth arc angle to avoid scratching the digestive tract mucosa.
[0030] It should be noted that the angle α and the length of the clamp hook are designed and adjusted according to clinical needs. When closed, the first clamp hook 1012 can adapt and stably position in the gap between the two second clamp hooks 1022, thereby achieving effective tissue clamping and closing operations.
[0031] In this embodiment, the metal clip 1 also includes a base 11, and the two clamping hooks 10 are connected to the distal end of the base 11; the control part 3 includes an operating handle 31, a control rod 32, a control finger ring 33, a control base 34 and a control wire 35, one end of the operating handle 31 is connected to one end of the control rod 32, the control finger ring 33 is sleeved on the control rod 32, and the other end of the control rod 32 is connected to the control wire 35 through the control base 34; the connecting part 2 includes a sheath 21 and a connecting guide wire 22, one end of the connecting guide wire 22 is connected to the control finger ring 33 through the control wire 35, and the other end of the connecting guide wire 22 is connected to the two clamping hooks 10 of the metal clip 1. When in use, the operating handle 31 is rotated clockwise or counterclockwise to drive the control wire 35, which drives the two clamping hooks 10 to rotate through the connecting guide wire 22, close to the wound surface, and the control finger ring 33 is pulled forward or backward to drive the two clamping hooks 10 to open and close, clamp the tissues on both sides of one side of the wound surface, and the hook barbs of the second clamping hook 102 are used to pull the tissues to match the edge of the wound surface on the opposite side, thereby closing the incision. It should be noted that the above-mentioned metal clip, connecting part and control part are the same as the existing metal clip structure for endoscopes, and their specific structure and working principle will not be repeated here.
[0032] In this embodiment, during use: A medical staff member holds the operation handle 31 with one hand and sends the metal clip to the target surgical site in the patient's body through the endoscopic working channel. Under direct endoscopic vision, the metal clip 1 is controlled to extend through the operation handle 31, and the clamping hooks 10 of the metal clip are driven to extend outside the sheath tube 21. The two clamping hooks 10 of the metal clip are opened by pushing forward the control ring 33. The operation handle 31 is rotated clockwise or counterclockwise, and the clamping hooks 10 of the metal clip are driven to rotate in the same direction simultaneously through the connecting guide wire 22 and the control wire 35 to precisely clamp the target mucosa, pull the tissue to an appropriate position, and release the clamping pressure of the clamping hooks 10 of the metal clip by pulling back the control ring 33. At this time, the hooking barbs 10221 of the second clamping hook 102 help to stabilize the clamped tissue. After releasing the first clamping hook 101, the first clamping hook 101 is brought close to the contralateral mucosa, and the control ring 33 is pulled back to clamp the tissue again. The clamping hooks 10 of the metal clip are forcefully clamped to separate the base 11 of the metal clip from the connecting guide wire 22 of the connecting part 2. The closure effect of the wound surface is confirmed, and the connecting part is withdrawn through the endoscopic channel, and the operation is completed. This method can be applied to the treatment of complex wound surfaces that are difficult to completely close with ordinary metal clips and can shorten the operation time.
[0033] The advantages of the present utility model are as follows:
[0034] (1) Among the clamping hooks of the metal clip, the angle between the forceps hook and the forceps arm is designed as an acute angle α. Compared with the traditional 90-degree or 135-degree design, it provides a strong tissue clamping force and more precise tissue control, effectively avoiding the phenomenon that traditional metal clips are prone to slipping and displacement during surgery, and ensuring the stability and reliability of the closure of larger wound surfaces in complex surgeries;
[0035] (2) During closure, the first forceps hook of the first clamping hook can be adapted and stably positioned in the gap between the two second forceps hooks of the second clamping hook, providing a stronger biting force and a tighter closure effect when closing the wound surface tissue; The design of the two forceps hooks, barbs and striped convex grooves of the second clamping hook significantly improves the tissue anchoring ability, reduces displacement, and reduces the probability of unhooking, and can more effectively grasp and pull the tissue, improving the surgical efficiency and safety in complex surgeries where precise movement or alignment of tissues is required;
[0036] (3) When closing larger wound surfaces in digestive endoscopic surgeries, due to the characteristics of gastrointestinal wall peristalsis, weak metal clip traction effect, and easy slippage, etc., it often leads to difficult operations and requires high operation experience and skills for endoscopic doctors. However, the present utility model is easy to operate, reduces the technical threshold of surgical operations, and is very friendly to operators with insufficient experience;
[0037] (4) Through the smooth arc angle design between the forceps arm and the forceps hook and the control of the barbs for hooking, the damage to the digestive tract mucosa is reduced; by operating the control part attached to the opening of the working channel of the endoscope, external traction of the wound surface is achieved through the metal clip. Since the connecting part extends from the working channel, damage to the throat is avoided, the safety guarantee of the patient is improved, and the overall surgical experience of the patient is improved.
[0038] If the present utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming using a casting process) (except where it is clearly impossible to use the integral forming process).
[0039] In addition, the terms used to represent the positional relationship or shape in any of the technical solutions disclosed in the present utility model, unless otherwise stated, include states or shapes that are approximate, similar or close to it.
[0040] Any component provided by the present utility model can either be assembled from a plurality of separate components or be a single component manufactured by an integral forming process.
[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.
Claims
1. An endoscopic mucosal closure clip with barbed hooks on the clamp arms, comprising a control part, a connecting part and a metal clip connected in sequence. The metal clip includes two oppositely arranged clamping hooks. The control part drives the two clamping hooks to open or close through a connecting wire in the connecting part. Both of the two clamping hooks include a clamp arm and a clamp hook connected to each other. It is characterized in that: The distal end of the clamping hook of one of the clamping hooks is provided with a hooking barb; in each clamping hook, the distal end of the clamping hook forms an angle α with the clamping arm, and the angle α is an acute angle.
2. The endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 1, characterized in that: The two clamping hooks are respectively a first clamping hook and a second clamping hook. The first clamping hook includes a first clamping arm and a first clamping hook connected to each other, and the first clamping hook faces the inner side of the metal clip; the second clamping hook includes a second clamping arm and two second clamping hooks connected to each other. The two second clamping hooks are distributed at the left and right ends of the second clamping arm and both face the inner side of the metal clip, and the distal end of each second clamping hook is provided with a hooking barb.
3. An endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 2, characterized in that: The distal end of the second clamping hook is the clamping hook tip, and the hooking barb is located inside the clamping hook tip and extends obliquely upward toward the clamping hook tip.
4. An endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 3, characterized in that: The inner side surface of the clamping hook tip is provided with a plurality of convex grooves, and the plurality of convex grooves are sequentially distributed in a striped shape.
5. An endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 1, characterized in that: The maximum opening angle of the two clamping hooks is 135°.
6. The endoscopic mucosal closing clip with barbed hooks on the forceps arms according to claim 1, characterized in that: The clamping hook and the clamping arm are of an integral structure.
7. An endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 1, characterized in that: The outer end of the connection part between the clamping hook and the clamping arm is provided with a smooth arc angle.
8. An endoscopic mucosal closure clip with barbed hooks on the forceps arms according to claim 1, characterized in that: The metal clip further includes a base, and the two clamping hooks are connected to the distal end of the base; the control part includes an operating handle, a control rod, a control finger ring, a control base and a control wire. One end of the operating handle is connected to one end of the control rod, the control finger ring is sleeved on the control rod, and the other end of the control rod is connected to the control wire through the control base; the connection part includes a sheath tube and a connection guide wire. One end of the connection guide wire is connected to the control finger ring through the control wire, and the other end of the connection guide wire is connected to the two clamping hooks of the metal clip.