Superfine auxiliary instrument for laparoscopic cholecystectomy

By designing a detachable head and an ultra-fine insertion part for laparoscopic cholecystectomy, the problems of small forceps head, short opening and closing distance, and poor clamping force have been solved, achieving stable clamping and simplified operation in single-port laparoscopic surgery, reducing wounds and scars.

CN121533787APending Publication Date: 2026-02-17LANZHOU SECOND PEOPLES HOSPITAL
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Patent Information

Application Number
CN202511727970.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-02-17

AI Technical Summary

Technical Problem

Existing minimally invasive puncture instruments have small forceps, short opening and closing distances, and poor clamping force, making them difficult to use effectively in single-port laparoscopic surgery.

Method used

An ultra-fine auxiliary instrument for laparoscopic cholecystectomy was designed. It features a detachable head and an ultra-fine insertion part. Through threaded connection and innovative transmission structure, it ensures a stable connection between the puncture needle and the head, achieving good clamping force. The opening and closing of the clamping part is controlled by friction. Combined with a locking device and angle adjustment knob, it simplifies the surgical operation.

Benefits of technology

It achieves stable tissue clamping in minimally invasive surgery, reduces wounds, eliminates postoperative scars, reduces patient pain, and is simple to operate with appropriate clamping force and opening distance.

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Abstract

The invention discloses a laparoscopic cholecystectomy superfine auxiliary instrument and relates to the technical field of medical instruments, the laparoscopic cholecystectomy superfine auxiliary instrument comprises a handle, a superfine puncture part and a head, the superfine puncture part comprises an outer sleeve and a puncture needle, the two ends of the outer sleeve are connected with the handle and the head respectively, the puncture needle is arranged in the outer sleeve, and the front end of the puncture needle is provided with a puncture tip; the handle controls the puncture needle to slide back and forth so as to control the opening and closing of the head part. According to the scheme, ultramicro-invasive puncture is achieved through the detachable head and the superfine puncture part, firstly, the superfine puncture part can conduct ultramicro-invasive opening on the abdomen of a patient through the puncture tip at the front end of the puncture needle, so that the superfine puncture part enters the abdominal cavity of the patient, and then the superfine puncture part penetrates out of the body of the patient under the guide of a converter of an umbilical laparoscope opening; the head assembly is accurately completed under in-vitro direct vision, then the head assembly is returned to the abdomen of a patient to complete an operation, and under the condition that the opening and closing distance and the clamping force of the head are proper, ultramicro-wound trepanning is completed, postoperative scars are eliminated, and the pain of the patient is relieved.
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