Apparatus for connecting a longitudinal member to a bone portion
US6837889B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A housing (40) has a first passage (42) through which a longitudinal member (12) extends and a second passage (44) extending transverse to the first passage. A fastener (16) extends through an opening (50) in the housing (40) into the second passage (44). An axis (18) of the fastener (16) is positionable in any one of a plurality of angular positions relative to an axis (46) of the second passage (44). A spacer (60) received in the second passage (44) engages the fastener (16) and the longitudinal member (12). A pin member (70) fixedly connected to the housing (40) extends into engagement with the spacer (60) to retain the spacer and the fastener (16) in the housing and maintain the spacer in frictional engagement with the fastener to prevent relative movement between the fastener (16) and the housing when the longitudinal member (12) is disengaged from the spacer. The fastener (16) and the housing (40) are manually movable relative to each other in opposition to the frictional engagement. A clamping mechanism (90) clamps the longitudinal member (12), the spacer (60), and the housing (40) to the fastener (16) to prevent movement of the fastener relative to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.