Medical grinding tool and driving assembly

Abstract

The invention discloses a medical grinding tool and a driving assembly. The tool comprises a tool pipe assembly and a grinding head at the front end of the tool pipe assembly, the grinding head can be arranged in the mode of being capable of being driven to pitch and rotate, the tail end of the grinding head is hinged to an inner tool pipe in the mode of transmission in the circumferential direction, and the grinding head in the hinge structure has axial moving margin relative to the inner tool pipe. The direct hinge structure is adopted to transmit transmission between the inner tool pipe and the grinding head, pitching motion can be done, the structure is simple, a transmission chain is short, stable control is facilitated, and therefore operation efficiency is improved. The structure that the pitching and circumferential positions of the grinding head both can be adjusted is adopted, universal orientation adjustment of the grinding head is achieved, in the operation process, the grinding head can achieve longitudinal and circumferential position adjustment according to changes of operation orientation, the medical grinding tool has good orientation on a surgical spot, good precision is achieved, the efficiency of the operation process is improved, the postoperative recovery cycle is shortened, the pain of a patient is relieved, and meanwhile treatment cost is lowered.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical grinding tool and a driving assembly for orthopedic surgery. Background technique [0002] In the process of orthopedic surgery, it is sometimes necessary to grind the bone tissue in the body; in the prior art, the power handle is generally used to directly drive the grinding head to rotate for grinding. Since the grinding head is directly driven by the power handle, and the grinding head extends into the inside of the human body; it is difficult to control the grinding head for deep surgical sites; especially for different grinding parts, it is impossible to control the grinding head to change the grinding head by external force. Cut the position, use can not realize flexible and convenient, and operation efficiency is lower. [0003] In order to solve the above problems, a bendable grinding head has appeared, which can adapt to the change of the grinding part by controlling the pi...

AI Technical Summary

Problems solved by technology

Since the grinding head is directly driven by the power handle, and the grinding head extends into the inside of the human body; it is difficult to control the grinding head for deep surgical sites; especially for different grinding parts, it is impossible to control the grinding head to change the grinding head by external force. Cutting the part, the use cannot be flexible and convenient, and the operation efficiency is low

[0003] In order to solve the above problems, a bendable grinding head has appeared, which can adapt to the change of the grinding part by controlling the pitching movement of the grinding head; the grinding head of this structure uses a universal joint for connection and transmission, and the structure and manufacturing process are complex, and The radius of the tool is increased, and the above-mentioned operations in orthopedics generally require the overall outer diameter of the grinding tool to be small, otherwise the tool cannot reach the surgical site or motion interference occurs during the operation

At the same time, in this structure, in order to realize the simultaneous pitching motion and rotation transmission between the grinding head and the inner cutter tube, the connection structure of the universal head is used, the structure is complicated and the control is unstable; and this structure only has pitching motion, which cannot realize The adaptive operation after changing the grinding part in the circumferential direction is to turn the tool and the driving handle as a whole, which is very inconvenient to use; moreover, the driving parts for driving the pitching are also relatively primitive, which affects the compactness of the tool

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