Chuck assembly of hemostatic clip

Abstract

The utility model provides a hemostatic clip chuck assembly and a hemostatic clip, the hemostatic clip chuck assembly comprises a sleeve, a chuck and at least one reinforcing tooth, one end of the sleeve is internally provided with a radially arranged gear pin; the clamping head is arranged in the sleeve and can extend out of the sleeve, the clamping head comprises two clamping pieces which can be opened and closed, and the two clamping pieces are arranged on the two sides of the gear pin respectively; the reinforcing teeth extend along the inner side planes of the clamping pieces, the far ends of the reinforcing teeth extend outwards in the radial direction, and the included angle between the far ends of the reinforcing teeth and the inner side planes of the clamping pieces ranges from 20 degrees to 90 degrees. By adopting the clamping pieces with the multi-tooth structure, the tissue is clamped in a multi-point mode, the tissue can be firmly clamped in the minimally invasive surgery under the endoscope, the hemostatic effect is good, the operation mode is simple and easy to operate, the risk of secondary bleeding of the tissue is avoided, and the surgery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a clamp assembly of a hemostatic clamp. Background Art

[0002] In current clinical medical applications, gastrointestinal bleeding is a common clinical symptom due to diseases, damage during treatment, etc. Among the various hemostasis methods currently used, clip device hemostasis has the advantages of less trauma, faster hemostasis, and fewer complications, and has become an important method for treating gastrointestinal bleeding. Its principle is to use special metal clips to perform mechanical compression hemostasis on arterial bleeding, persistent bleeding, and vascular stump bleeding, and its effectiveness has been clinically confirmed.

[0003] The existing hemostatic clips do not hold the tissue firmly and have poor closing force when used, which may easily cause the risk of secondary bleeding and bring inconvenience to the operation. Therefore, there is an urgent need for a hemostatic clip that can firmly hold the tissue in endoscopic minimally invasive surgery, has good hemostatic effect, and reduces the risk of surgery. Utility Model Content

[0004] The utility model aims to provide a chuck assembly of a hemostatic clamp, which adopts a chuck with a multi-tooth structure to clamp tissue at multiple points, can firmly clamp tissue in minimally invasive surgery under endoscopy, has good hemostatic effect, and is simple and easy to operate.

[0005] According to one aspect of the utility model, a chuck assembly of a hemostatic clip includes a sleeve, one end of the sleeve having a radially arranged shift pin; a chuck placed in the sleeve and capable of extending out of the sleeve, the chuck including two clips that can be opened and closed, the two clips being respectively placed on both sides of the shift pin; at least one reinforcing tooth, the reinforcing tooth extending along the inner plane of the clip, the distal end of the reinforcing tooth extending radially outward, the angle between the distal end of the reinforcing tooth and the inner plane of the clip being 20 degrees to 90 degrees.

[0006] Preferably, there are two reinforcing teeth, and the two reinforcing teeth are respectively extended along the inner plane of each clip, and the distal end of each reinforcing tooth extends radially outward, and the angle between the distal end of each reinforcing tooth and the inner plane of the corresponding clip is 20 degrees to 90 degrees.

[0007] Preferably, the distal ends of the two reinforcement teeth are equidistant from the shift pin in the horizontal direction.

[0008] Preferably, the distal ends of the two reinforcement teeth are at unequal distances from the shift pin in the horizontal direction.

[0009] Preferably, the distal end of each reinforcing tooth is pointed.

[0010] Preferably, the distal end of each reinforcing tooth is in the shape of a symmetrical tooth tip or an eccentric tooth tip.

[0011] Preferably, the pointed teeth have an angle of 20 degrees to 90 degrees.

[0012] Preferably, each of the reinforcing teeth is fixed to each of the clips by welding.

[0013] The clamp assembly of the hemostatic clamp of the utility model adopts a clamping piece with a multi-tooth structure to clamp tissue at multiple points, so it can firmly clamp tissue in minimally invasive surgery under endoscopy, has a good hemostatic effect, is simple and easy to operate, avoids the risk of secondary bleeding of tissue, and improves surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of an embodiment of a chuck assembly;

[0015] Figure 2 for Figure 1 A front view of the clip when it is opened;

[0016] Figure 3 for Figure 1 A front view of the clip when it is closed;

[0017] Figure 4 is a structural schematic diagram of another embodiment of a chuck assembly;

[0018] Figure 5 for Figure 4 The main view of

[0019] Figure 6 is a structural schematic diagram of another embodiment of a chuck assembly;

[0020] Figure 7 A schematic diagram of the structure of an embodiment for strengthening the distal end of a tooth;

[0021] Figure 8 A schematic diagram of the structure of another embodiment for strengthening the distal end of a tooth;

[0022] Fig. 9 Schematic diagram of the structure of the hemostatic clamp. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, in order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application, and the preferred embodiments of the present application are given in the accompanying drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly understood. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components.

[0026] For ease of description, in this specification, the end of the sheath tube along its length, away from the operator when in use, is defined as the distal end, and the end held by the operator is defined as the proximal end; in this specification, the sheath tube along its length is defined as the horizontal direction, and the direction perpendicular to the horizontal direction is defined as the radial direction.

[0027] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the specification.

[0028] like Figure 1-3As shown, the chuck assembly of the hemostatic clamp of the present embodiment 1 comprises: a sleeve 1, wherein one end of the sleeve 1, i.e., the distal end, has a radially arranged shift pin 2; a chuck 3, which is disposed in the sleeve 1 and can extend out of the sleeve 1, and the chuck 3 comprises two opening and closing clips 31, and the two clips 31 are respectively disposed on both sides of the shift pin 2; at least one reinforcing tooth 4, the reinforcing tooth 4 is extended along the inner plane of the clip 31, and the distal end of the reinforcing tooth 4 is extended radially outward, and the angle between the distal end of the reinforcing tooth 4 and the inner plane of the clip 31 is 20 degrees to 90 degrees, so as to adapt to more clamping scenarios. When the chuck assembly is used, during the movement of the chuck 3, the sleeve 1 can apply a restraining force to the clip 31 in a resisting manner, so that during the movement of the two clips 31 in the proximal direction, the two clips 31 can overcome the elastic tension and approach each other so that the angle between the clips 31 becomes smaller, thereby achieving closure between the clips 31, and at the same time strengthening the closure of the space between the teeth 4 or between the teeth 4 and the clips 31, thereby achieving a clamping and closing effect on the tissue wound surface. In the present utility model, the distal ends of the two clips 31 themselves have clamping teeth to clamp tissues, and reinforced teeth 4 with teeth at the distal ends are provided; that is, when clamping tissues, multiple teeth are used to clamp tissues at the same time, which can firmly clamp tissues in endoscopic minimally invasive surgery, has a good hemostatic effect, and is simple and easy to operate.

[0029] like Figure 1-6 As shown, further preferably, there are two reinforcing teeth 4, and the two reinforcing teeth 4 are respectively extended along the inner plane of each clip 31, and the angle between the distal end of each reinforcing tooth 4 and the inner plane of the corresponding clip 31 is 20 degrees to 90 degrees, and the distal end of each reinforcing tooth 4 is radially extended outward. The distal ends of the two reinforcing teeth 4 are at equal distances from the shift pin 2 in the horizontal direction, or the distal ends of the two reinforcing teeth 4 are at unequal distances from the shift pin 2 in the horizontal direction, depending on the actual design, for example, the two reinforcing teeth 4 can be aligned in the center to clamp the tissue, can be staggered up and down to clamp the tissue, can be staggered left and right to clamp the tissue, or clamp the tissue in other relative positions. Each reinforcing tooth 4 is fixedly connected to each clip 31, such as by welding or other methods, which is not limited here.

[0030] like Figure 7-8 As shown, specifically, the distal end of each reinforcing tooth 4 is pointed 41, and further specifically, the distal end of each reinforcing tooth 4 can be symmetrical tooth tip-shaped or eccentric tooth tip-shaped, and the pointed tooth angle can be 20 degrees to 90 degrees, so as to clamp the tissue more firmly.

[0031] like Fig. 9As shown, another aspect of the present embodiment provides a hemostatic clip, comprising a handle 5, a sheath 6, and a pushing member 7 which can be pushed between the distal end and the proximal end in the channel of the sheath 6 through the handle 5, and also comprises the above-mentioned chuck assembly of the hemostatic clip, the distal end of the pushing member 7 and the proximal end of the two clips 31 of the chuck assembly of the hemostatic clip being releasably connected, and the distal end of the sleeve 2 and the sheath 6 being detachably connected.

[0032] In the actual working process of the hemostatic clip in this embodiment, the proximal end of the sleeve 1 is detachably assembled to the distal end of the sheath 6, and the proximal ends of the two clips 31 are detachably connected to the distal end of the pusher 7. When the clips 31 of the chuck 3 are in an open state, corresponding to the tissue position of the wound, the pusher 7 is pulled by the handle 5, and the chuck 3 is pulled by the pusher 7 to move from the distal end to the proximal end. During the movement, the clips 31 are constrained by the sleeve 1 to close and clamp the tissue. Then, the pusher 7 is pulled in the same direction by the handle 5, and the clips 31 are pulled by the pusher 7 to continue to move from the distal end to the proximal end to the locking position, and the pusher 7 is continued to be pulled, the sleeve 1 is separated from the sheath 6, the clips 31 are separated from the pusher 7, and after the chuck assembly is left in the patient's body, the other parts of the hemostatic clip can be withdrawn from the endoscope.

[0033] The hemostatic clip of the utility model uses multiple teeth to clamp tissues, can firmly clamp tissues in minimally invasive surgery under endoscopy, has good hemostatic effect, and is simple and easy to operate.

[0034] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A clamp assembly of a hemostatic clip, characterized in that: It comprises a sleeve (1), one end of which is provided with a radially arranged shift pin (2); A chuck (3) is placed in the sleeve (1) and can extend out of the sleeve (1), the chuck (3) comprises two clips (31) that can be opened and closed, and the two clips (31) are respectively placed on both sides of the shift pin (2); At least one reinforcing tooth (4), the reinforcing tooth (4) extending along the inner plane of the clip (31), the distal end of the reinforcing tooth (4) extending radially outward, and the angle between the distal end of the reinforcing tooth (4) and the inner plane of the clip (31) is 20 degrees to 90 degrees.

2. The clamp assembly of the hemostatic clip according to claim 1, characterized in that: There are two reinforcing teeth (4), and the two reinforcing teeth (4) are respectively extended along the inner plane of each clip (31), and the angle between the distal end of each reinforcing tooth (4) and the inner plane of the corresponding clip (31) is 20 degrees to 90 degrees, and the distal end of each reinforcing tooth (4) is radially extended outward.

3. The clamp assembly of the hemostatic clip according to claim 2, characterized in that: The distal ends of the two reinforcing teeth (4) are equidistant from the shift pin (2) in the horizontal direction.

4. The clamp assembly of the hemostatic clip according to claim 2, characterized in that: The distances between the distal ends of the two reinforcing teeth (4) and the shift pin (2) in the horizontal direction are unequal.

5. The clamp assembly of the hemostatic clip according to claim 2, characterized in that: The distal end of each reinforcing tooth (4) is pointed.

6. The clamp assembly of the hemostatic clip according to claim 5, characterized in that: The distal end of each reinforcing tooth (4) is in the shape of a centrally symmetrical tooth tip or an eccentric tooth tip.

7. The clamp assembly of the hemostatic clip according to claim 6, characterized in that: The pointed teeth have an angle of 20 degrees to 90 degrees.

8. The clamp assembly of the hemostatic clip according to claim 1, characterized in that: The reinforcing teeth (4) are fixed to the clip (31) by welding.

Images