A multifunctional digestive endoscope needle holder

By constructing a cutting mechanism in the endoscope needle holder that integrates a sliding traction element with the sheath slit, suturing, traction, and cutting are achieved in one, solving the problem of multifunctional operation in a narrow space and improving the efficiency and safety of endoscopic surgery.

CN121817986BActive Publication Date: 2026-07-17CAPITAL UNIVERSITY OF MEDICAL SCIENCES +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CAPITAL UNIVERSITY OF MEDICAL SCIENCES
Filing Date
2026-01-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing suturing instruments for digestive endoscopy are difficult to perform multifunctional operations in confined spaces, especially the integration of suturing, traction and cutting functions. In addition, traditional needle holders are unstable and cannot meet the needs of fine suturing of deep and large wounds under endoscopy.

Method used

A multifunctional endoscope needle holder was designed. By constructing a sliding traction element inside the fixed clamp arm and cooperating with the sheath slit, a sophisticated cutting mechanism is constructed to achieve integrated operation of suturing, traction and cutting. The axial reciprocating motion of the traction element is used to complete the cutting in a narrow space. The combination of flexible design and high-strength materials ensures the stability and safety of the instrument.

Benefits of technology

It significantly shortens the operation time, reduces the potential damage of instruments to the digestive tract and endoscope, improves operation efficiency and safety, is suitable for cutting soft sutures in wet and slippery environments, and ensures the versatility and structural strength of instruments in a single-channel environment.

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Abstract

This invention relates to a novel multifunctional endoscope needle holder, comprising a clamping assembly disposed at the distal end of an endoscope sheath. The clamping assembly includes a fixed clamping arm and a movable clamping arm, which, when closed, enclose a needle-holding cavity. The fixed clamping arm has an axially extending groove, in which a traction member is slidably mounted. The traction member can move along the groove under the drive of a driving member, thereby switching between a wiring position, a cutting position, and an internal position. When the traction member moves from the distal end to the proximal end, it first passes through the wiring position where the needle-holding cavity is located. The traction member is used to hook and drive the surgical suture in the needle-holding cavity toward a pre-set slit at the distal end of the sheath. In the cutting position, the inner edge of the traction member and the slit together define the cutting area. As the traction member continues to retract and slide through the slit area into the internal position inside the sheath, the traction member cooperates with the edge of the slit to cut the surgical suture.
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