Method and apparatus for drilling bores in jaw bone tissue for the reception of dental anchors
US4787848A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1986 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Nov 25, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bore is formed in the jaw bone of a patient by means of a trephine drill having a hollow head. A pilot hole is initially drilled in the jaw bone and a guide bushing is installed in the pilot hole. The drill head is inserted telescopingly over a guide portion of the bushing and is advanced into the bone until the drill head abuts an end of the guide portion to terminate drill advancement. The length of the bore is extended by advancing the drill further into the bone relative to a stop member which is freely longitudinally slidably situated on the drill. When the stop member becomes sandwiched between the jaw bone and a surface movable with a motor housing carrying the drill, it is assured that the desired bore depth has been obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.