Locking nail for fracture fixation
US6579294B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jul 20, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A locking nail includes a shank, at least one cross-bore close to one end and at least one cross-bore close to the other end. The cross-bores for receiving a bone screw each. An additional cross-bore located at one end of the nail is of an elongate shape in the longitudinal direction of the nail. A female thread is formed in a hollow-designed shank portion having the elongate cross-bore. A locking member with a male-threaded portion which is adapted to be screwed into the female thread in the hollow portion and interact with the bone screw in the elongate cross-bore in order to displace it transversely to its longitudinal axis in the cross-bore. A second cross-bore is provided for a bone screw between the elongate cross-bore and the adjacent end of the shank. The arrangement of the female thread is such and the length of the locking member and the location of the second cross-bore are sized such that the locking member largely leaves vacant the second bore even if the bone screw which is in the elongate cross-bore bears against the end of the elongate cross-bore facing the shank end. This allows for the insertion of a second bone screw in the second bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.