Self-tapping skull hollow drill and using method thereof

Abstract

The invention discloses a self-tapping skull hollow drill. The self-tapping skull hollow drill comprises a sleeve; the upper part of the sleeve has a length-adjustable pressing rod, the lower part ofthe sleeve has a drilling rod, and a handle and the hand rocking bar are arranged on both sides of the sleeve respectively; one end of the hand rocking bar can achieve mechanical driving with the drilling rod in the sleeve; a tail end of the drill rod is engaged with a drilling bit; the drilling bit can be freely replaced at the tail end of the drilling rod; the drilling bit is hollow inside; theinner wall of the drilling bit has a self-tapping screw, and a plurality of drilling tools are uniformly arranged at the tail end of the drilling bit; and an inner ring surface is formed on an inner wall of each drilling tool; an intermittent outer ring surface is formed on an outer wall of each drilling tool; the outer diameter of the outer ring surface is larger than the outer diameter of the drilling bit; the bottom surfaces of the drilling tools are inclined toward the center of the drilling bit, and the included angle between the bottom surfaces of the drilling tools and the outer walls of the drilling tools is 110 to 160 degrees. Compared with the prior art, the self-tapping skull hollow drill is simple in structure and reasonable in design, can complete craniotomy quickly and effectively, can reduce damage to the patient, and the skull piece can be preserved integrally, and postoperative filling is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a self-tapping skull hollow drill and a method for using the same. Background technique [0002] Craniotomy is a difficult major operation, and the risk of brain tissue damage during the operation is very high and difficult to master. For a long time, craniotomies have been performed with hand-operated cranial drills. Since the hard skull is close to the soft meninges and brain tissues, it is entirely up to the operator's feel and experience to accurately open the skull without accidentally injuring the meninges and brain tissues. The existing hand-operated cranial drills have poor hand feeling when opening the cranium, especially the hand-operated cranial drills are not easy to control the drilling depth; The device still drills the skull at the drilling hole into slag pieces like the existing manual cranial drill, which is not easy to perform autologous repair of the s...

AI Technical Summary

Problems solved by technology

The existing hand-operated cranial drills have poor hand feeling during craniotomy, especially the hand-operated cranial drills are not easy to control the drilling depth; in recent years, electric cranial drills have also been popularized, although the electric cranial drills are set to stop automatically after drilling through the skull. The device still drills the skull into slag pieces like the existing hand-operated cranial drill, and it is not easy to perform autologous repair of skull defects after surgery.

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