Tibial spacer blocks and femoral cutting guide
US8167888B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Mar 4, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/155
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to one or more tibial spacer blocks used during knee arthroplasty, each configured to be temporarily positioned upon a resected proximal portion of a tibia (essentially mimicking the tibial component of the knee prosthesis), for performing a range of motion analysis and for checking flexion and extension gaps prior to cutting the distal or posterior femur. Preferably, the spacer blocks each include an attachment arrangement configured and arranged to mate with a complementary attachment arrangement of an alignment tower and/or a femoral cutting guide. The alignment tower, which is configured to be used with an alignment rod, is used for verifying the alignment of the limb's mechanical axis when the spacer block is positioned between the tibia and the femur. The femoral cutting guide is used for guiding a cutting member into proper orientation for resecting a distal or posterior portion of a femur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.