Kinematic-axis locating device for knee arthroplasty
US11529245B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Jul 1, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4668
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A kinematic-axis locating device for knee arthroplasty includes two spoon-shaped arms and a linking piece. The two spoon-shaped arms are to be placed between a proximal tibia and a distal femur. Due to checking effects of ligaments on the proximal tibia and the distal femur, a medial condyle femur and a lateral condyle femur hold the two spoon-shaped arms on the tibial plateau using their respective curvatures. The linking piece provides a reference axis that is naturally defined by the two inserted and positioned spoon-shaped arms. The reference axis is roughly parallel to a kinematic axis upon which the medial condyle and the lateral condyle pivot against the tibial plateau. Articular surface resection can then be performed between the proximal tibia and the distal femur with reference to the reference axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.