Prosthetic condylar joints with articulating bearing surfaces having a translating contact point during rotation thereof
US8870964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2010 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Nov 23, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/4202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic joint according to the present invention includes a first implant component for attachment to a first bone and a second implant component for attachment to a second bone. The first implant component has a condylar portion that includes first and second condylar bearing surfaces and similarly, the second implant component has bearing surfaces that receive and are complementary to the first and second condylar bearing surfaces. Each of the first and second condylar bearing surfaces and each of the bearing surfaces of the second implant component has a cross-section in a coronal plane that exhibits two different radii and a contact point is established between the first and second condylar bearing surfaces and the bearing surfaces of the second implant component. The bearing surfaces of the respective implant components are configured such that varus and valgus rotation of the first implant component relative to the second implant component causes the contact point to move outwardly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.