Method and apparatus for attaching connective tissues to bone using a cortical bone anchoring device
US6547800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/0888
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone anchor device for attaching connective tissue to bone comprises a disk adapted for insertion into a portion of bone to which the connective tissue is to be attached. The disk is movable between a bent orientation for presenting a smaller cross-section and an expanded orientation for presenting a larger cross-section. The bent orientation is utilized for inserting the disk through a small hole into a region of cancellous bone beneath the cortical bone layer, after which the disk is actuated to its expanded orientation so that it will be permanently anchored in the cancellous bone, as it will be too large to return proximally through the hole in the cortical bone layer. Two embodiments are disclosed. In a first embodiment, the disk is initially formed in the expanded orientation, of spring steel. In a second embodiment, the disk is initially formed in the bent orientation, and spring steel is not required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.