Apparatus used in performing femoral and tibial resection in knee surgery
US6685711B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Mar 17, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Tools for resecting tibia and femur include anchoring devices, a three-way alignment guide attachable to the anchoring devices, two embodiments of a resection guide attachable to the alignment guide and equipped with couplings for trackers, a plane probe for examining the resected plane, and apparatus for EM alignment of the resection guide in the event of a computer failure. The methods of the invention include operating a computer aided navigation apparatus in the conventional manner including attaching one or more trackers to the bone to be resected; choosing a location for the anchoring device with or without guidance from the computer and installing the anchoring device; attaching the three-way alignment guide to the anchoring device; attaching a resection guide to the alignment guide; attaching one or two trackers to the resection guide; locating the resection guide with the aid of the alignment guide and the computer; fixing the resection guide to the bone with pins. After the bone is resected, the resection plane probe may be attached to a tracker and moved about the resected plane to obtain feedback from the computer navigation system. In the event of computer failure, the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.