A wire rope drive universal mechanism for surgical drills

A universal mechanism and surgical technology, applied in ear treatment and other directions, can solve the problems of large overall size, poor accuracy, complex transmission structure, etc., to achieve smooth motion, reduce accumulated errors, and flexible operation.

Inactive Publication Date: 2017-08-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission structure of the rod transmission is complicated, the precision is poor, and the overall size is large

Method used

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  • A wire rope drive universal mechanism for surgical drills
  • A wire rope drive universal mechanism for surgical drills
  • A wire rope drive universal mechanism for surgical drills

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with specific embodiments.

[0025] The invention relates to a wire rope transmission universal mechanism for a surgical drill, which is used to solve the multi-degree-of-freedom problem of the end actuator of a surgical drill robot in a narrow space.

[0026] Such as figure 1 Shown is a schematic diagram of the overall structure of the universal mechanism of the present invention applied to a surgical drill. The universal mechanism includes a deflection mechanism 2, a pitch mechanism 3 and a wire rope transmission system 4, the front end of which is connected to the surgical drill 1, and the rear end is connected to the quick-change interface Mechanisms 5 are connected and can realize rotations R1, R2, R3 in three degrees of freedom.

[0027] Such as figure 2 It is a schematic diagram of the structure of the universal mechanism of the present invention. The deflection structure 2 and the pitch st...

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Abstract

The invention discloses a wire rope transmission universal mechanism for a surgical drill, which includes three parts: a deflection mechanism, a pitch mechanism and a wire rope transmission system. The deflection mechanism consists of a deflection shaft, a driving wheel, a guide wheel, a pitch frame and a deflection cylinder The pitch mechanism is mainly composed of pitch shaft, driving wheel, pitch frame, wrist joint frame and rotating tube, etc. The wire rope transmission system is composed of driving wheel, guide wheel, guide wheel shaft and guide wheel frame. The universal mechanism has three degrees of freedom and has the characteristics of three axes intersecting at one point. It can imitate the movement of the wrist to drive the end actuator to swing, so that the operation is simple, flexible, reliable and accurate; the wire rope transmission system adopts double-sided wire walking, The scheme of intersecting different planes effectively solves the problems of complicated wire running and mutual interference caused by single-side wire running. The mechanism of the invention has the advantages of stable and reliable structure, precise control without return error, high transmission efficiency and the like.

Description

technical field [0001] The invention relates to a wire rope transmission universal mechanism, in particular to a wire rope transmission universal mechanism used for surgical drills. Background technique [0002] In the traditional surgical operation, the doctor holds the surgical instrument and performs the operation with his own perception and experience. Due to psychological or physiological reasons, the doctor’s hand will shake, which may lead to operational errors, ranging from surgical failure to serious. endanger the life of the patient. For example, in cochlear implant surgery, when the surgical drill is drilling, if the positioning is not accurate due to hand shaking, when the tip is close to the inner ear cartilage tissue, the inner eardrum may be drilled. Therefore, it is necessary to develop a robot-assisted surgical drill tool to improve positioning accuracy, reduce the physiological shaking of the doctor's hand, and improve the quality of surgery. [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F11/00
CPCA61F11/20
Inventor 桑宏强张鑫贵李灿杨世明李博张文刚周莹
Owner TIANJIN POLYTECHNIC UNIV
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