Torque limiting clamping plug for osteosynthesis instrumentation
US6478795B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1996 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Sep 23, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0074
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The plug (1) comprises two coaxial parts (2, 3) separated by a fracture initiating line (4). A respective print (6, 7) is provided on each part and is coaxial with the other print. The first part (1) permits the screwing of the second part (3) which is provided with a screw thread (5) in an implant to which it must remain fixed after fracture of the two parts on the line (4), when a predetermined fracture torque is exceeded. The print (7) of the second part (3) permits a subsequent unscrewing, if necessary, for disassembling the instrumentation, which constitutes an essential advantage of this plug. Further, the clamping can be achieved with high precision in conformity with the wishes of the manufacturer, since the fracture torque can be adjusted to the intended value by machining the fracture intiating line (4) in a precise manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.