Drill head assembly for cranial perforators

Details Drill head assembly for cranial perforators Drill head assembly for cranial perforators

1990-03-16

1992-08-04

Rosenbaum, C. Fred

Surgery

Instruments

Cutting, puncturing or piercing

408206, 408225, A61B 1716

Patent

active

051355329

ABSTRACT:
A drill head assembly for a cranial perforator, which assembly is similar to the drill head assembly disclosed in U.S. Pat. No. 4,884,571, except that the configuration of the axially-projecting sections of the front end surfaces of the inner drill are modified to cause the inner drill to stop rotating more quickly upon penetration of the inner drill through a skull.

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patent: 4600006 (1986-07-01), Baker
patent: 4803982 (1989-02-01), Baker
patent: 4884571 (1989-12-01), Baker
patent: 4951690 (1990-08-01), Baker

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