Surgical instrument transmission control mechanism, surgical instrument transmission device and surgical instrument

Abstract

The invention provides a surgical instrument transmission control mechanism, a surgical instrument transmission device and a surgical instrument, and relates to the technical field of surgical instruments. The central rotating sleeve is rotatably arranged on the fixed seat in a penetrating manner; the central rotating sleeve is movably sleeved with the clamping piece, and the clamping piece and the central rotating sleeve are arranged in a spaced mode to form a winding groove used for winding the transmission wire; and the winding keeping structure is arranged between the clamping piece and the fixing base and used for driving the clamping piece to move in the axial direction of the center rotating sleeve so that the transmission wire can be clamped in the winding groove. According to the surgical instrument transmission control mechanism, linear motion can be converted into rotary motion in the transmission process, and the rotary control precision of the surgical instrument can be improved. According to the surgical instrument transmission device and the surgical instrument, the rotation angle of the actuator can be better controlled by applying the surgical instrument rotation control mechanism.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to a surgical instrument transmission control mechanism, a surgical instrument transmission device and a surgical instrument. Background technique [0002] A surgical instrument used in minimally invasive surgery of a natural orifice includes a surgical actuator, a flexible tube connected to the surgical actuator, and a controller connected to the flexible tube. Wherein, the flexible tube is pierced with a transmission wire for transmitting the force output by the controller to the surgical actuator. This flexible surgical instrument reaches the lesion position in the patient's body through the working channel of the endoscope. [0003] For the rotation control of flexible instruments, the existing products are equipped with rotating components that can rotate cooperatively on the controller handle and the surgical actuator respectively, and the two sets of rotating co...

AI Technical Summary

Problems solved by technology

In actual use, the length of many transmission wires exceeds 1000mm. Due to the influence of circumferential deformation, the circumferential transfer ratio of the rear end of the transmission wire cannot effectively reach the front end of the transmission wire, which in turn leads to the rotation of the actuator. Decrease in accuracy affects the control accuracy of the actuator

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