Patent · US Expired

Drill head assembly for cranial perforators

US5135532A · kind A · utility

12Cited by
12References
20Claims
0Family size

Inventor

Key dates

Filing dateMar 16, 1990
Grant dateAug 4, 1992
Priority date—
Expiry dateMar 16, 2010

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T408/9065
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.