Patellar resection sawguide
US4633862A · kind A · utility
Inventor
Key dates
| Filing date | May 30, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | May 30, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/3877
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed herein are a method and instruments for the installation of a patellar button prosthesis. The first instrument consists of a saw guide including gauges integrally attached thereto which aid the surgeon in determining whether the patella has been grasped at the correct location with respect to the anterior and posterior sides thereof, which determine for the surgeon whether adequate bone stock will remain after resection of the patella, and which are chosen to correspond with the particular thickness of the patellar button which is to be installed. The second instrument consists of a drill guide including structure enabling its attachment to one of the jaws of the saw guide so that the saw guide may be retained in position about the patella after resection. A further instrument usable with the present invention consists of a drill bit including a collar which is provided to interact with holes formed in the drill guide so as to limit the depth of the holes which are drilled in the patella for the purpose of installation of the patellar button. Finally, a patella clamp is provided which includes a single moveable jaw limited in its movement solely to reciprocation, which cl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.