Hemostatic clip device and hemostatic forceps

Abstract

The utility model discloses a hemostatic clamp device belongs to medical instrument technical field, including tightening sleeve, two clamping pieces, pin shaft and pull rod, pin shaft is passed through the rear end of two clamping pieces and can be slidably arranged in the tightening sleeve, the front end of clamping piece is stretched to the outside of tightening sleeve, the front end of pull rod is hooked on pin shaft, and pull rod is Y-shaped structure, and the rear end of clamping piece is limited in pull rod, and the rear end of clamping piece is provided with first limit part and second limit part, and first limit part and one side of pull rod are held, and second limit part and the other side of pull rod are held. The utility model discloses a hemostatic clamp device, through the holding relation of first limit part and second limit part and the two sides of pull rod, the rotation of clamping piece relative to pin shaft is limited, and the accuracy of clamping piece clamping position is guaranteed. The utility model also discloses a hemostatic forceps with the hemostatic clamp device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular, to a hemostatic clamp device and hemostatic forceps. Background Technology

[0002] Hemostatic forceps are commonly used surgical instruments for stopping bleeding. They are mainly used to clamp blood vessels or tissues, restricting blood flow and providing the surgeon with a clear surgical field. They resemble a long, slender pair of forceps, with finely toothed or locking mechanisms at the tip to stably clamp the bleeding site. For the specific structure, please refer to the Chinese patent document CN210170108U filed by the applicant on February 20, 2019, which describes a rotatable hemostatic clip device, including a delivery component. The delivery component includes a tightening sleeve. A pair of arc-shaped clips with their central parts concave are symmetrically arranged inside the cavity of the tightening sleeve. One end of each clip extends out of the front end of the tightening sleeve through the second limiting edge on both sides, and the other end is provided with a hook. The hook ends are fitted together before the pull rod deforms. The clips are made of a material with a certain degree of elasticity, so that the clips can still maintain their integrity after being retracted into the tightening sleeve. Under the action of the inner wall of the tightening sleeve, the hook ends of the clips are subjected to an outward force. The pull rod is made of metal. When the hook-shaped part is subjected to a backward pulling force greater than the predetermined force, the hook-shaped part of the pull rod will be straightened and disengaged or broken. The hooks at the rear end of the clips are hooked onto the rear end of the second step inside the tightening sleeve. At this time, the front ends of the clips hug each other to compress and stop bleeding at the bleeding point.

[0003] In the aforementioned hemostatic clip device, the rear ends of the two clips are jointly threaded onto the short pin during assembly. When the lever is pulled backward, the clips move backward along with the short pin. However, in actual use, the clips lack a limiting structure, and the clips will rotate within a certain range around the central axis of the short pin. This causes the position of the front ends of the two clips to change uncontrollably, which is not conducive to medical personnel accurately clamping and compressing specific hemostatic sites.

[0004] Therefore, it is necessary for the inventor to improve the aforementioned hemostatic clip device in order to solve the above-mentioned problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a hemostatic clip device that can prevent the clip from rotating relative to the pin is provided.

[0006] A hemostatic clamp with the hemostatic clamp device is also provided.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a hemostatic clip device, including a tightening sleeve, two clips, a pin, and a pull rod. The pin passes through the rear ends of the two clips and is slidably disposed in the tightening sleeve. The front ends of the clips extend to the outside of the tightening sleeve. The front end of the pull rod is hooked on the pin. The pull rod has a Y-shaped structure. The rear ends of the clips are confined within the pull rod. The rear ends of the clips are provided with a first limiting part and a second limiting part. The first limiting part abuts against one side of the pull rod, and the second limiting part abuts against the other side of the pull rod.

[0008] Furthermore, the two clips are respectively located on the first clip and the second clip. The rear end of the first clip is bent along the pop-out direction of the end and a first hook is provided. The rear end of the second clip is bent along the pop-out direction of the end and a second hook is provided. The inner wall of the rear end of the tightening sleeve is provided with an annular limiting edge for the first hook and the second hook to be hooked.

[0009] Furthermore, the first limiting part is disposed on the first clamping piece, the second limiting part is disposed on the second clamping piece, and the first limiting part is located in front of the second hook, and the second limiting part is located in front of the first hook.

[0010] Furthermore, the first limiting part is bent in the opposite direction to the rear end of the first clamping piece, and the second limiting part is bent in the opposite direction to the rear end of the second clamping piece.

[0011] Furthermore, the pull rod includes two pull tabs and a pull plate connected to the rear end of the two pull tabs. The front end of the pull tabs is hooked onto the pin shaft, and the rear end of the two clips is confined within the V-shaped space formed by the two pull tabs.

[0012] Furthermore, the first limiting part abuts against one side of one of the pull tabs, and the second limiting part abuts against the other side of the other pull tab.

[0013] Furthermore, the first clip, the first hook, and the first limiting part are integrally formed, and the second clip, the second hook, and the second limiting part are integrally formed.

[0014] A hemostatic forceps, the hemostatic forceps comprising the hemostatic clamp device described in any of the preceding claims.

[0015] Furthermore, it also includes a spring tube, a cable, and a handle. The spring tube is connected between the tightening sleeve and the handle. The handle is slidably provided with a slip ring. The two ends of the cable are respectively connected to the pull rod and the slip ring.

[0016] The beneficial effects of this utility model are: the hemostatic clamp device or hemostatic forceps of this utility model, by setting a first limiting part and a second limiting part on the clamping piece, and making the first limiting part and the second limiting part abut against the two sides of the pull rod respectively, ensures that the clamping piece cannot rotate around the central axis of the pin, thereby ensuring the accuracy of the clamping position of the front end of the clamping piece after clamping. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of the hemostatic clip device of this utility model;

[0019] Figure 2 yes Figure 1 Exploded view of the hemostatic clip device shown;

[0020] Figure 3 yes Figure 1 A perspective view of the hemostatic clip device shown from another angle (tightening sleeve omitted);

[0021] Figure 4 yes Figure 1 Another perspective view of the hemostatic clip device shown (tightening sleeve omitted);

[0022] Figure 5 yes Figure 1 Top view of the hemostatic clip device shown;

[0023] Figure 6 yes Figure 5 The hemostatic clamp device shown is a cross-sectional view along AA.

[0024] In the diagram: 1. Tightening sleeve, 11. Limiting edge, 12. Limiting plate, 2. Clamping piece, 210. Hook, 21. First limiting part, 22. Second limiting part, 2a. First clamping piece, 2b. Second clamping piece, 210a. First hook, 210b. Second hook, 3. Pin, 4. Pull rod, 41. Pulling piece, 42. Pulling plate. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] Please see Figures 1-6This utility model provides a hemostatic clip device, including a tightening sleeve 1, clips 2, pins 3 and pull rods 4. There are two clips 2. The pins 3 pass through the rear ends of the two clips 2 and are slidably disposed in the tightening sleeve 1 along the axial direction of the tightening sleeve 1. The front ends of the clips 2 extend to the outside of the tightening sleeve 1. The front ends of the pull rods 4 are hooked on the pins 3, and the rear ends of the clips 2 are confined in the pull rods 4.

[0027] The clamping pieces 2 are made of elastic material, and the pull rod 4 has a Y-shaped structure. The rear ends of the two clamping pieces 2 deform under the limiting action of the pull rod 4, thus tightly adhering to each other. The front end of the pull rod 4, which is used to hook onto the pin 3, is a deformable structure. In use, when the pull rod 4 moves backward under the action of the traction mechanism, it can drive the pin 3 and the two clamping pieces 2 on the pin 3 to move backward synchronously. At this time, the parts of the clamping pieces 2 that were originally located inside the tightening sleeve 1 gradually enter the tightening sleeve 1, and the clamping pieces 2 gradually deform, causing the two clamping pieces to... As the front end of clip 2 gradually approaches, the degree of deformation of clip 2 continuously increases, causing the moving resistance of pull rod 4 to gradually increase. When the resistance increases to a certain value, the hook part at the front end of pull rod 4 either deforms and disengages from pin 3, or breaks directly and disengages from pin 3. At this time, the rear end of clip 2 is no longer restrained by pull rod 4 and pops out in a direction away from each other, eventually getting stuck at the rear end of tightening sleeve 1. At this time, the front ends of the two clips 2 have clamped the bleeding point, achieving the hemostasis effect.

[0028] Both clips 2 have hooks 210 protruding from their rear ends, and the two hooks 210 extend in opposite directions. Please refer to [link / reference]. Figure 6 An annular limiting edge 11 protrudes from the inner wall of the rear end of the tightening sleeve 1. When the hook 210 passes through the limiting edge 11 from front to back under the action of the pull rod 4, and the pull rod 4 disengages from the pin 3, the two hooks 210 will pop out in opposite directions under the action of the rear end of the clamping piece 2 resetting, and finally lock onto the rear end face of the limiting edge 11. At this time, the clamping piece 2 is locked on the tightening sleeve 1. It should be noted that in the initial state, the rear ends of the two clamping pieces 2 are confined within the pull rod 4 and are in contact with each other. After the pull rod 4 disengages from the pin 3, the rear ends of the two clamping pieces 2 spring open in opposite directions. When the rear ends of the two clamping pieces 2 are in contact due to elastic deformation, the interaction force between the two clamping pieces 2 ensures that there is no relative movement between the two clamping pieces 2.

[0029] In this embodiment, the rear end of the clamping piece 2 is provided with a first limiting part 21 and a second limiting part 22. The first limiting part 21 abuts against one side of the pull rod 4, and the second limiting part 22 abuts against the other side of the pull rod 4. Under the limiting action of the first limiting part 21 and the second limiting part 22, the clamping piece 2 cannot rotate around the central axis of the pin 3, thereby ensuring the accuracy of the clamping position of the front end of the clamping piece 2 after clamping. Specifically, when the clamping piece 2 wants to rotate in the direction of the first limiting part 21, the abutting action of the second limiting part 22 against the side of the pull rod 4 restricts the two clamping pieces 2 from rotating relative to the pin 3; and when the clamping piece 2 wants to rotate in the direction of the second limiting part 22, the abutting action of the first limiting part 21 against the side of the pull rod 4 restricts the two clamping pieces 2 from rotating relative to the pin 3.

[0030] In one specific embodiment, the two clamping pieces 2 are respectively a first clamping piece 2a and a second clamping piece 2b, and the two hooks 210 are respectively a first hook 210a and a second hook 210b. The first hook 210a is located at the rear end of the first clamping piece 2a, and the second hook 210b is located at the rear end of the second clamping piece 2b. The first hook 210a is bent in the direction of ejection towards the rear end of the first clamping piece 2a, and the second hook 210b is bent in the same direction. The ejection direction of the clamping pieces refers to the direction in which, after the pull rod 4 disengages from the pin 3, the rear end of the clamping piece 2 is freed from the restraint of the pull rod 4, and the two clamping pieces 2 move in opposite directions.

[0031] Furthermore, the first limiting part 21 is disposed on the first clamping piece 2a, and the second limiting part 22 is disposed on the second clamping piece 2b, with the first limiting part 21 located in front of the second hook 210b and the second limiting part 22 located in front of the first hook 210a.

[0032] Furthermore, both the first limiting part 21 and the second limiting part 22 are bent, wherein the first limiting part 21 is bent in the opposite direction to the rear end of the first clip 2a, and the second limiting part 22 is bent in the opposite direction to the rear end of the second clip 2b. This is done so that when the rear ends of the first clip 2a and the second clip 2b are ejected outwards, it will not prevent the first hook 210a and the second hook 210b from engaging with the limiting edge 11.

[0033] In this embodiment, the pull rod 4 includes two pull tabs 41 and a pull plate 42 connected to the rear ends of the two pull tabs 41. The front end of the pull tab 41 is provided with a hook-like structure for hooking onto the pin 3. The rear ends of the two clamping pieces 2 are confined within the V-shaped space formed by the two pull tabs 41. The pull plate 42 is used to connect with the cable, and can drive the pull rod 4 to move backward synchronously when the cable is pulled backward. The first limiting part 21 abuts against one side of one of the pull tabs 41, and the second limiting part 22 abuts against the other side of the other pull tab 41.

[0034] In this embodiment, the first clamping piece 2a, the first hook 210a, and the first limiting part 21 are integrally formed, and the second clamping piece 2b, the second hook 210b, and the second limiting part 22 are integrally formed, which facilitates processing and also helps control production costs.

[0035] The front end of the tightening sleeve 1 is symmetrically provided with inwardly extending limiting plates 12, and the front ends of the clamping pieces 2 extend from opposite sides of the limiting plates 12 to the outside of the tightening sleeve 1. The limiting plates 12 are set at the front end of the tightening sleeve 1 by bending. During assembly, after the rear ends of the clamping pieces 2 and the pin 3 are installed inside the tightening sleeve 1 from the front port, the limiting plates 12, which originally extend along the axial direction of the tightening sleeve 1, can be bent inward to block the front port portion of the tightening sleeve 1. In addition, the pin 3 is arranged radially along the tightening sleeve 1, and both ends of the pin 3 are set with arc-shaped structures and cooperate with the inner wall of the tightening sleeve 1, ensuring that the pin 3 can slide stably along the axial direction of the tightening sleeve 1.

[0036] This utility model also provides a hemostatic forceps, including the hemostatic clamp device described above, and further including a spring tube, a pull cable, and a handle. The front end of the spring tube is connected to the tightening sleeve 1, and the rear end of the spring tube is connected to the handle. The handle is provided with a slip ring that slides along the length of the handle. The two ends of the pull cable are respectively connected to the pull rod 4 and the slip ring. In use, the user can slide the slip ring to move the pull rod 4, ultimately clamping the front ends of the two clamping pieces 2 at the bleeding site. The structure and connection relationship of the spring tube, pull cable, and handle are the same as the corresponding components in Chinese patent document CN210170108U, and will not be described again here.

[0037] The hemostatic clip device of this utility model, by setting a first limiting part 21 and a second limiting part 22 on the clip 2, and having the first limiting part 21 and the second limiting part 22 respectively abut against the two sides of the pull rod 4, ensures that the clip 2 cannot rotate around the central axis of the pin 3, thereby ensuring the accuracy of the clamping position of the front end of the clip 2 after clamping.

[0038] The hemostatic forceps provided by this utility model have all the technical features of the aforementioned hemostatic clamp device, and therefore have the same technical effect as the aforementioned hemostatic clamp device.

[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A haemostatic clip device characterised in that: The device includes a tightening sleeve, two clamps, a pin, and a pull rod. The pin passes through the rear ends of the two clamps and is slidably disposed within the tightening sleeve. The front ends of the clamps extend outside the tightening sleeve. The front end of the pull rod is hooked onto the pin. The pull rod has a Y-shaped structure. The rear ends of the clamps are confined within the pull rod. The rear ends of the clamps are provided with a first limiting part and a second limiting part. The first limiting part abuts against one side of the pull rod, and the second limiting part abuts against the other side of the pull rod.

2. The hemostatic clip device as described in claim 1, characterized in that: The two clips are located on the first clip and the second clip, respectively. The rear end of the first clip is bent along the pop-out direction of the end and a first hook is provided. The rear end of the second clip is bent along the pop-out direction of the end and a second hook is provided. The inner wall of the rear end of the tightening sleeve is provided with an annular limiting edge for the first hook and the second hook to be hooked.

3. The hemostatic clip apparatus of claim 2, wherein: The first limiting part is disposed on the first clamping piece, the second limiting part is disposed on the second clamping piece, and the first limiting part is located in front of the second hook, and the second limiting part is located in front of the first hook.

4. The hemostatic clip apparatus of claim 3, wherein: The first limiting part is bent in the opposite direction to the rear end of the first clamping piece, and the second limiting part is bent in the opposite direction to the rear end of the second clamping piece.

5. The hemostatic clip apparatus of claim 1, wherein: The pull rod includes two pull tabs and a pull plate connected to the rear end of the two pull tabs. The front end of the pull tabs is hooked on a pin, and the rear end of the two clips is confined within a V-shaped space formed by the two pull tabs.

6. The hemostatic clip device as described in claim 5, characterized in that: The first limiting part abuts against one side of one of the pull tabs, and the second limiting part abuts against the other side of the other pull tab.

7. The hemostatic clip apparatus of claim 2, wherein: The first clip, the first hook, and the first limiting part are integrally formed, and the second clip, the second hook, and the second limiting part are integrally formed.

8. A haemostatic forceps characterised in that: The hemostatic forceps include the hemostatic clamp device according to any one of claims 1-7.

9. The hemostatic forceps according to claim 8, wherein: It also includes a spring tube, a cable, and a handle. The spring tube is connected between the tightening sleeve and the handle. The handle is slidably provided with a slip ring. The two ends of the cable are respectively connected to the pull rod and the slip ring.

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