Acetabular bone file

Abstract

The invention relates to an acetabular bone file which is suitable for a bone joint replacement surgery. Under the driving a power tool, a physical acetabular bone is filed to form an accurate predicated shape (semi-spherical shape or frustum shape), so that an acetabular bone planted object is convenient to plant. The acetabular bone file is composed of a cutting main body and a rapid replacement part, wherein the rapid replacement part is fixedly connected with the cutting main body; the cutting main body is a dome-shaped thin shell; a plurality of convex cutting edges are irregularly distributed on the outer surface of the thin shell; each cutting edge is provided with a scrap containing hole; the length direction of each scrap containing hole is vertical to the corresponding cutting edge; the cutting edge parts are parallel to the outer surface of the dome-shaped thin shell. The plurality of convex cutting edges are distributed at all parts of the predicated formed shape. The lengths of one part of the cutting edges parallel to the outer surface of the dome-shaped thin shell is not less than 0.5mm. The wall thickness of the cutting main body is not more than 3mm. The rapid replacement part is a cross-shaped bracket or in a disc shape with holes.

Description

technical field [0001] The invention relates to an acetabular reamer, which is suitable for orthopedic joint replacement surgery. Under the drive of a power tool, the acetabular reamer is reamed into an accurately expected shape (hemispherical or truncated cone), which facilitates the implantation of acetabular implants. Background technique [0002] At present, the acetabular file usually adopts a multi-blade hemispherical hip file as a whole, and several straight or helical blades are inlaid on the spherical base. This design has a large torque and difficult bone collection. Clean up further. Another improved acetabular file adopts a thin shell structure with protruding semicircular incisor teeth and chip holes. This design cannot form the expected precise shape along the cutting direction at one time. The disadvantage is the operation It is complex and has poor shape accuracy, and it is difficult for the operator to operate the operation. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0002] At present, the acetabular file usually adopts a multi-blade hemispherical hip file as a whole, and several straight or helical blades are inlaid on the spherical base. This design has a large torque and difficult bone collection. further cleaning

Another improved acetabular file adopts a thin shell structure with protruding semicircular incisor teeth and chip holes. This design cannot form the expected precise shape along the cutting direction at one time. The disadvantage is the operation Complicated and poor in shape accuracy, it is difficult for the operator to operate the operation

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