Patient specific instruments and methods for joint prosthesis
US11980377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Apr 16, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/108
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for preparing an ankle bone to receive an ankle prosthesis is provided. The system includes a patient specific cutting guide that has an anterior surface, a posterior surface, and at least one cutting feature extending through the guide from the anterior surface. The posterior surface comprising a first protrusion or other member that extends from a first end fixed to the posterior surface to a second end disposed away from the first end of the first protrusion. The posterior surface has a second protrusion or other member that extends from a first end fixed to the posterior surface to a second end disposed away from the first end of the second protrusion. The first and second protrusions are spaced apart and have a length such that when the patient specific cutting guide is coupled with first and second bone references, which can include bushings implantable in bones, a clearance gap is provided between the posterior surface and the ankle bone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.