Skull milling cutter for craniotomy

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a skull milling cutter for craniotomy. The skull milling cutter comprises a shell; a first sliding holeis formed in the shell, a first drill rod is rotationally connected into the first sliding hole, and a second drill rod is slidably connected into a first hole formed in the first drill rod; a firstsliding groove is formed in the first hole, a sliding block is slidably connected into the first sliding groove, and the sliding block is fixedly connected with the first drill rod; a sliding cavity is formed in the first hole, a limiting ring is fixedly connected to the position, corresponding to the sliding cavity, of the first drill rod, and the second drill rod on the side, away from the sliding block, of the limiting ring is sleeved with a reset spring; a groove is formed in the position, corresponding to the sliding block, in the first hole, an obliquely-arranged second sliding groove isformed in the groove, and a rotating pin is connected into the second sliding groove in a sliding mode; and a second sliding hole is formed in the position, corresponding to the second sliding groove, of the second drill rod, a sliding column is slidably connected into the second sliding hole, and the end, close to the rotating pin, of the sliding column is fixedly connected with the rotating pin. Accurate positioning is achieved through the second drill rod, and the drilling accuracy of the skull milling cutter is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, in particular to a skull milling cutter for craniotomy. Background technique [0002] Craniotomy, also known as craniotomy, is a type of cranial surgery, which refers to the use of mechanical equipment to open the patient's skull to perform some unconventional treatments. [0003] The procedure of opening the patient's skull is usually to locate the positioning holes at three points in the area, and then use a milling cutter to cut between the positioning holes to remove the skull. This process often uses a skull milling cutter and a drilling drill. Both the knife and the drill are craniotomy instruments commonly used in neurosurgery. During brain surgery, the high-speed rotating milling unit is used to cut open the skull. When positioning the three holes, it is necessary to cut a hole in the skull. The existing operation method directly uses trephine drilling. However, when the trep...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, the diameter of the drill rod used by the skull milling cutter in the prior art is large, which is not conducive to rapid positioning and drilling. After drilling with a smaller diameter drill rod, it is necessary to ream the hole, which increases the number of operations. Time, reduce operation efficiency, increase operation cost and the risk of patient infection, a kind of craniotomy craniotomy that the present invention proposes

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