Medical screw and method of installation
US6743233B1 · kind B1 · utility
193Cited by
177References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2000 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/044
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical screw includes a shaft having a threaded portion and a distal guiding tip for introducing the screw into a pre-drilled implantation site. The threaded portion of the medical screw has a first series of helical threads having a first diameter and a second series of helical threads interleaved with the first series of helical thread and having a second diameter, where the first diameter is different than the second diameter. In addition, the medical screw may have a counter-rotation channel configured to receive bone growth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.