Self-rotating mechanism and surgical robot

By using a drive rod connected to a universal joint in minimally invasive surgical instruments, the problem of interference between the rotation mechanism and pitch and yaw motion was solved, enabling precise rotation control of the actuator in multiple degrees of freedom, thus improving the operational accuracy and convenience of the surgical robot.

CN110897721BActive Publication Date: 2026-07-24ANQING XIANGDANGDANG INTELLECTUAL PROPERTY OPERATION CO LTD
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Patent Information

Application Number
CN201911345560.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-12-24
Publication Date
2026-07-24
Estimated Expiration
2039-12-24

AI Technical Summary

Technical Problem

The rotation mechanism of existing minimally invasive surgical instruments is prone to interfering with pitch and yaw movements during operation, affecting the accuracy and complexity of the operation.

Method used

The drive rod is connected to the actuator via a universal joint. The universal joint can achieve multi-angle deflection. When the self-rotation drive drives the actuator to rotate, it does not change the original pitch and yaw attitude. The self-rotation control unit controls the rotation of the actuator according to the operation of the finger.

Benefits of technology

This technology enables the rotational motion of the execution component in pitch and yaw postures to not interfere with other motions, improving the accuracy and controllability of the operation, enhancing the degree of freedom and ease of operation of the surgical robot, and reducing the overall size of the structure.

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Abstract

The application relates to the field of medical devices, in particular to a self-rotation mechanism and a surgical robot. The self-rotation mechanism comprises a self-rotation driving part, a self-rotation transmission assembly, a driving rod and a universal joint. Two ends of the universal joint are connected with the driving rod and an execution assembly respectively, and the self-rotation driving part drives the driving rod to rotate. The universal joint can realize the deflection of multiple angles by being connected with the execution assembly through the driving rod. When the execution assembly is in a pitching and yawing posture, the self-rotation driving part drives the execution assembly to rotate without changing the original pitching and yawing posture and without interfering with other movements. The problem that the self-rotation mechanism in the prior art interferes with other movements in the working state is solved.
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