Self-tapping implant
US6896517B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C8/0025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-tapping implant for jawbone comprises a body (15) with threads arranged thereon, a conically tapering portion (12) arranged at its front end, and one or more spaces (4, 5, 6) which accommodate bone material cut off during tapping and which are formed by removal of material from the threads and body in question. Each materially reduced thread has a cutting edge (1a, 2a, 3a) which extends inwards from the outer edge of the respective remaining thread part and which can cooperate with the bone during tapping. Each cutting edge of a number of cutting edges has a pointed shape (1b, 2b, 3b) which, in the cross section of the thread in question, essentially follows a line which deviates from a radius (r) through the remaining thread part's front portion or the pointed shape's point (1b, 2b, 3b) in order in this way to form a cutting angle. Each cutting edge (1a, 2a, 3a) on a first remaining thread part (1, 2, 3) merges via a radius (r′) or curved part into a rear edge (e.g. 2d) on a second remaining thread part, which is arranged before the first thread part in the direction of screwing (7), for the purpose of providing optimum remaining material in the body and remaining thread pa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.