Double-bend acetabulum file holder suitable for robotic surgery

Abstract

The invention discloses a double-bend acetabulum file holder suitable for robotic surgery, which comprises a pipe fitting, the pipe fitting comprises a first straight section body and a second straight section body which are respectively positioned at two ends and are coaxial, the double-bend acetabulum file holder also comprises a bend section body positioned between the first straight section body and the second straight section body, and the bend section body is positioned between the first straight section body and the second straight section body; the first straight section body, the bent section body and the second straight section body are sequentially connected into a whole; the power transmission assembly is located in the pipe fitting and rotationally connected with the pipe fitting, the two ends of the power transmission assembly extend to the two ends of the pipe fitting correspondingly, and the power transmission assembly is used for transmitting rotation loads; and the clamping assembly is used for clamping the acetabulum file. According to the holder disclosed by the invention, after an acetabular file is replaced, two grinding actions can be ensured to be coaxial, and the grinding precision of an acetabular fossa is ensured; the rod piece for transmitting the dynamic load has a very stable structure, so that the rotation precision of the holder can be ensured; and the clamping assembly is further arranged, so that the acetabulum file can be stably and rapidly replaced.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to a double-curved acetabular file holder suitable for robot surgery. Background technique [0002] Total hip prosthesis replacement is an effective means of treating hip joint disease. In recent years, the number of patients undergoing artificial hip prosthesis acetabular cup replacement is increasing, and it is mainly concentrated in middle-aged patients whose acetabulum is severely damaged or obviously declined. The joint movement is obviously limited, which seriously affects daily life. Therefore, it is necessary to remove the diseased femoral head from the patient's body and install the corresponding acetabular prosthesis. In order to make the prosthesis installation more stable, the human acetabular fossa must be ground to meet the external dimensions of the artificial prosthesis. The auxiliary surgical instruments for grinding the acetabular fossa are acetabular ...

AI Technical Summary

Problems solved by technology

[0004] 1. The method of total hip replacement surgery is: use an acetabular reamer to grind the recession of the acetabular lesion to fit the shape of the corresponding acetabular cup. Specifically, one end of the gripper is connected to the power source, and the other end is connected to the acetabular reamer. Connected, the power source provides power to make the acetabular file rotate around the central axis of the holder, and achieve the effect of grinding the diseased bone through manual feeding; in this process, generally start with the smallest acetabular file, and then advance every two millimeters For file grinding, the ideal effect is that after each replacement of the acetabular file, the rotation axis coincides with the last time to achieve coaxial grinding. The angle of the acetabulum is slightly different, and it is difficult for the doctor to ensure the angle of placement of the gripper during the rasping process, and it is difficult to achieve coaxial rasping;

[0005] 2. The size of the end of the acetabular file holder used in the prior art is relatively large, the clamping of the acetabular file is unstable, and it is easy to loosen and fall off, and due to the structural defect of the holder itself, its rotation coaxiality is poor , the grinding accuracy of the acetabular fossa cannot be guaranteed, and the clinical efficiency is also low;

[0006] 3. Most of the existing acetabular file holders use a universal joint structure to realize eccentric transmission, resulting in a large number of precision parts, which are not suitable for the situation where the files are subjected to a large force, and it is extremely difficult to clean and disinfect after the operation

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