Polyaxial orthopedic fastening apparatus with independent locking modes
US8062336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2005 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Apr 6, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0019
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus is designed to attach an implant to bone in a manner that permits rotational adjustment of the implant about multiple axes prior to securement via the apparatus. The apparatus includes separate rotational and translational fasteners that can be individually locked to independently restrict rotation and translation of the implant relative to the bone. The rotational fastener includes an interpositional member, an expandable engagement member, and a rotational locking member that urges the expandable engagement member to advance along the interpositional member. The resulting expansion of the engagement member causes it to engage the implant. The rotational fastener is slidable along a fixation member implanted in the bone until the translational fastener is applied to restrict relative translation between the rotational fastener and the bone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.