Patent · US Expired

Cranial perforator

US4699550A · kind A · utility

38Cited by
4References
5Claims
0Family size

Inventor

Key dates

Filing dateApr 1, 1986
Grant dateOct 13, 1987
Priority date—
Expiry dateApr 1, 2006

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T408/906
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A new drill-type cranial perforator is disclosed of the type which comprises a front drill head assembly made up of a leading inner drill and a trailing outer drill, and a rear support and drive assembly adapted to enable both drills so long as the leading inner drill is encountering a resistive surface and to disable both drills when the leading inner drill stops encountering the resistive surface.

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