Drill bit device capable of suddenly stopping after drilling through skull

Abstract

The invention relates to the technical field of drill bit devices for neurosurgery, in particular to a drill bit device capable of suddenly stopping after drilling through a skull, which comprises an output shaft, a coupling head assembly, a coupling sleeve assembly and a drill bit assembly, one end of the coupling head component is spliced and assembled with the end part of an output shaft of the electric drill, the other end of the coupling head component is spliced and assembled with the coupling sleeve component, and the other end of the coupling sleeve component is sheathed and assembled with the drill bit component; the connecting sleeve assembly comprises a connecting sleeve, an inverted conical hole, a first steel ball, a through hole, a first compression spring, an inner sleeve and an ejector rod. An inverted conical hole is formed in the circumferential wall of the connecting sleeve in the circumferential direction, a first steel ball is assembled in the inverted conical hole, and a penetrating hole is formed in the side wall of the right end of the connecting sleeve in the axial direction. When the drill bit drills through the skull, the axial and acting force of the skull on the drill bit disappears or is smaller than a certain value, under the action of an internal mechanism, the device does not transmit torque to the drill bit any more, the cutting torque of the drill bit is automatically cut off, and the purpose that the drill bit automatically stops after drilling through the skull without hurting other parts is achieved.

Description

technical field [0001] The invention relates to the technical field of a drill device for neurosurgery, in particular to a drill device capable of emergency stop after drilling through a skull. Background technique [0002] In the field of neurosurgery, drilling the skull is a common preoperative need. The operation requirements are: 1. Drill holes in the skull, drain or operate at the openings; 2. Drill 3 to 4 holes in the skull, and then cut and remove the skull with a wire saw or cutting method. Surgery. Therefore, drilling holes in the skull is a job with high requirements and certain risks (try not to damage the meninges), and it is also a technical and physical test for neurosurgeons. [0003] For drilling holes on the skull now, it is mainly through adding a protective cover on the outer layer of the drill bit, observing at any time during drilling, constantly adjusting the protective cover, and completing the drilling on the skull in a gradual manner. During this ...

AI Technical Summary

Problems solved by technology

During the drilling process, the operator is nervous, and if there is a slight mistake, it is easy to cause injury

The patent of the present invention provides a drill device that can stop suddenly after drilling through the skull to solve the problem of drilling holes in the skull

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