T-shaped knife of interbody fusion cage

Abstract

The invention relates to the field of medical apparatus and instruments and particularly relates to a T-shaped knife of an interbody fusion cage. The T-shaped knife of the interbody fusion cage provided by the invention is mainly used for processing interbody fusion cages and comprises a cutting edge with a cone structure and a hilt with a cylindrical structure, wherein the cutting edge and the hilt are integrally formed, the cutting edge comprises a front blade surface arranged on the front end face, an upper blade surface, a lower blade surface and a rear blade surface connected with the hilt, the rear blade surface is arranged to form an included angle of 82.5 degrees with the side face of the hilt, the upper blade surface is arranged to form an included angle of 29 degrees with the side face of the hilt, and the lower blade surface is arranged to form an included angle of 29 degrees with the side face of the hilt. The T-shaped knife of the interbody fusion cage provided by the invention has a reasonable structure, recesses with negative angles can be processed in a machining process of complicated pore cavities by means of the actuate angles arranged between the cutting edges and the hilt, and the recesses are formed for one time, so that the processing efficiency and uniformity are greatly improved, and a large-space straight groove is arranged to ensure easy discharge of cutting chips so as to prolong the service life of the cutter.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a T-shaped knife for an intervertebral fusion device. Background technique [0002] The T-shaped knife is a tool assembled on a milling machine for milling T-shaped grooves and side grooves of workpieces. T-shaped cutters are also called T-shaped milling cutters, semicircular milling cutters, and keyway milling cutters, which can perfectly process T-shaped grooves and side grooves. It can maintain normal cutting performance at high temperature. [0003] At present, the common T-shaped knife is an arc-shaped T-shaped knife, and its blade is arc-shaped. Generally, it can only process T-shaped grooves with an angle of 90°. The processed structure is single, and the tool bar often takes up more space. The processing space leads to the reduction of chip removal space, which is easy to cause tool wear and collapse. However, poor chip removal will produce burrs and scratches at the...

AI Technical Summary

Problems solved by technology

[0003] At present, the common T-shaped knife is an arc-shaped T-shaped knife, and its blade is arc-shaped. Generally, it can only process T-shaped grooves with an angle of 90°. The processed structure is single, and the tool bar often takes up more space. The processing space leads to the reduction of chip removal space, which is easy to cause tool wear and collapse

However, poor chip removal will cause burrs and scratches on the machined inner hole and port, and it is necessary to change the tool again to remove the burr and chamfer, which reduces the production efficiency

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