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CN-224220178-U - Binding clip subassembly and biopsy forceps

CN224220178UCN 224220178 UCN224220178 UCN 224220178UCN-224220178-U

Abstract

The utility model provides a binding clip assembly and biopsy forceps, wherein the binding clip assembly comprises an outer sleeve, a stay wire and a binding clip, the binding clip is of an integrated U-shaped structure, the binding clip comprises two outwards-opened elastic arms, forceps grooves are formed in the ends of the elastic arms, a containing cavity for containing biopsy tissues is formed after the two forceps grooves are closed, the outer sleeve is hollow and tubular, the binding clip is telescopically arranged in the outer sleeve, and the stay wire penetrates through the outer sleeve and is connected with the rear end of the binding clip. The utility model provides an integrally formed U-shaped clamp head, which is simple in structure and convenient to use, and can realize opening and clamping of a clamp jaw by utilizing a pull wire to drive the clamp head to stretch, so that the length of a clamp head assembly is greatly shortened, the clamp head assembly can more easily stretch out under the limit bending angle of an endoscope, positioning deviation caused by overlong clamp head can be avoided, and the reliability and accuracy of operation are improved. And the opening and clamping of the jaw are controlled by directly pulling the wire, so that the response is faster, the clamp head can be rapidly stretched out and retracted, the adjustment time is shortened, and the operation time is shortened.

Inventors

  • GAO XIANG

Assignees

  • 苏州聚生精密冲件有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (10)

  1. 1. The forceps head assembly is characterized by comprising an outer sleeve, a stay wire and a forceps head, wherein the forceps head is of an integrated U-shaped structure, the forceps head comprises two outwards-opened elastic arms, forceps grooves are formed in the ends of the elastic arms, and a containing cavity for containing biopsy tissue is formed after the two forceps grooves are closed; The outer sleeve is hollow and tubular, the binding clip is telescopically arranged in the outer sleeve, and the stay wire penetrates through the outer sleeve and then is connected with the rear end of the binding clip.
  2. 2. The binding clip assembly of claim 1 wherein said resilient arms are "S" shaped and wherein said jaw slot has a knife edge at an outer edge thereof.
  3. 3. The binding clip assembly of claim 1 wherein an extension sleeve is connected to the rear end of the outer sleeve, the extension sleeve being hollow and the pull wire passing through the extension sleeve.
  4. 4. A binding clip assembly as defined in claim 3, wherein said extension sleeve and said pull wire are each of a flexible material.
  5. 5. A binding clip assembly according to claim 3 wherein the rear end of the outer sleeve has a necked down portion with an inner diameter less than the inner diameter of the front end, the front end of the extension sleeve being fitted over the periphery of the necked down portion.
  6. 6. A biopsy forceps comprising a forceps head assembly according to any one of claims 1 to 5.
  7. 7. The biopsy forceps of claim 6, further comprising a handle and a sliding sleeve slidably disposed over the handle, wherein the extension sleeve is fixedly connected to the handle, wherein the rear end of the pull wire is fixedly connected to the sliding sleeve, and wherein the extension of the pull wire is achieved by displacement of the sliding sleeve relative to the handle.
  8. 8. The biopsy forceps of claim 7, wherein a guide sleeve is arranged at the front end of the sliding sleeve, a sliding cavity for sliding the handle is arranged in the guide sleeve, and a limiting hole with a hole diameter matched with the extension sleeve is arranged at the front end of the guide sleeve.
  9. 9. The biopsy forceps of claim 7, wherein the handle is provided with a chute along a length thereof, the sliding sleeve is connected with an embedded block, and the embedded block is connected with the pull wire through the chute.
  10. 10. The biopsy forceps of claim 7, wherein a handle is connected at a rear end thereof with a hand-held ring, and wherein an annular groove adapted for finger gripping is provided in the middle of the sliding sleeve.

Description

Binding clip subassembly and biopsy forceps Technical Field The utility model relates to the technical field of medical instruments, in particular to a forceps head assembly and a biopsy forceps. Background The biopsy forceps are indispensable tools for taking pathological specimens in endoscopic examination, biopsy forceps are used for taking samples of living tissues under the endoscope, and slicing and pathological analysis are carried out, so that diagnosis of illness state and normal operation are facilitated. With the widespread clinical application of this technique, the clinical requirements for biopsy forceps are also increasing. At present, the structure of the conventional biopsy forceps mainly comprises a four-bar structure and a five-bar structure, but the four-bar structure and the five-bar structure are mutually hinged by using a plurality of connecting bars, so that the problem that the length of a forceps head component of the biopsy forceps is overlong is caused, the forceps head of the biopsy forceps is difficult to stretch out to clamp tissues under the limit bending angle regulated by an endoscope, the operation time is prolonged, the operation accuracy is influenced, and pain is brought to a patient. Disclosure of utility model In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a forceps head assembly and a biopsy forceps for solving the problems of the prior art that the forceps head assembly of the biopsy forceps is complicated in structure and too long, resulting in difficulty in extending out to grasp tissue. To achieve the above and other related objects, the present utility model provides the following technical solutions: The utility model provides a clamp head assembly, which comprises an outer sleeve, a stay wire and a clamp head, wherein the clamp head is of an integrated U-shaped structure, the clamp head comprises two outwards-opened elastic arms, clamp grooves are formed in the ends of the elastic arms, a containing cavity for containing biopsy tissue is formed after the two clamp grooves are closed, the outer sleeve is hollow and tubular, the clamp head is telescopically arranged in the outer sleeve, and the stay wire penetrates through the outer sleeve and is connected with the rear end of the clamp head. In one embodiment of the utility model, the elastic arm is S-shaped, and the outer edge of the clamp groove is provided with a cutting edge. In an embodiment of the present utility model, an extension sleeve is connected to the rear end of the outer sleeve, the extension sleeve is hollow, and the pull wire passes through the extension sleeve. In an embodiment of the present utility model, the extension sleeve and the pull wire are made of flexible materials. In an embodiment of the utility model, the rear end of the outer sleeve is provided with a necking part with an inner diameter smaller than that of the front end, and the front end of the extension sleeve is sleeved on the periphery of the necking part. In a second aspect, the present utility model provides a biopsy forceps comprising a forceps head assembly as described above. In an embodiment of the utility model, the biopsy forceps further comprises a handle and a sliding sleeve, the sliding sleeve is sleeved on the handle in a sliding manner, the extension sleeve is fixedly connected with the handle, the rear end of the stay wire is fixedly connected with the sliding sleeve, and the extension of the stay wire is realized through displacement of the sliding sleeve relative to the handle. In an embodiment of the present utility model, a guide sleeve is disposed at a front end of the sliding sleeve, a sliding cavity for sliding the handle is disposed in the guide sleeve, and a limiting hole with a hole diameter matched with the extension sleeve is disposed at a front end of the guide sleeve. In an embodiment of the present utility model, the handle is provided with a sliding groove along a length direction thereof, the sliding sleeve is connected with an embedded block, and the embedded block passes through the sliding groove to be connected with the pull wire. In an embodiment of the present utility model, a hand-held ring is connected to the rear end of the handle, and an annular groove suitable for finger clamping is provided in the middle of the sliding sleeve. As described above, the forceps head component and the biopsy forceps have the following beneficial effects: The utility model provides an integrally formed U-shaped clamp head, which is simple in structure and convenient to use, and can realize opening and clamping of a clamp jaw by utilizing a pull wire to drive the clamp head to stretch, so that the length of a clamp head assembly is greatly shortened, the clamp head assembly can more easily stretch out under the limit bending angle of an endoscope, positioning deviation caused by overlong clamp head can be avoided, and the reliability and a