Nonlinear lag screw with captive driving device
US6423067B1 · kind B1 · utility
114Cited by
28References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0648
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fastener is provided for fixating two objects in a fixed spatial relationship, such as bone segments, so that resultant stress is maintained at a constant value along a shank portion of the fastener in order to minimize stress concentrations and optimize the strength to size relationship of the fastener, thereby reducing the likelihood of fastener failure. The fastener additionally comprises an improved head which temporarily engages a driving instrument to facilitate fixation. A driving instrument for deploying the fastener is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.