WO1989003198A1
Expired / Lapsed
WO
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Drill head assembly for cranial perforators
Assignee: Individual
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Filing: 1988-10-13
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Granted: —
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Expires: 2008-10-13
Abstract
Abstract A drill head assembly (100) for drilling holes in bony structure is disclosed. The assembly has an inner drill (102) and an outer drill (104) which rotate together as a unit. The leading portions (169) of the outer drill are contiguous with the peripheral portions of the inner drill (116) and the inner and outer drills are adapted to form a bore-countersink opening in the bone, whereby the drill head assembly may be used to safely drill through relatively thin bone.
Inventors
- 👤 John W. Baker
Bibliographic Details
Application Number
—
Jurisdiction
WO
Data Source
google_patents
Last Synchronized
2026-10-23 04:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1695; Y; Y10; Y10T; Y10T408/00; Y10T408/70; Y10T408/89; Y10T408/905; Y10T408/906
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References Cited (Backward Citations)
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