System for assessing a fit of a femoral implant

US8617173B2 · kind B2 · utility

Assignee

• Stryker Leibinger GmbH & Co. KG · DE

Inventors

• Stuart L. Axelson, Jr. · Rahway, US
• Jens Rueber · Glückstadt, DE
• Jose Luis Moctezuma de la Barrera · Glückstadt, DE
• Peter Zimmermann · Munich, DE

Key dates

• Filing date: Jan 29, 2013
• Grant date: Dec 31, 2013
• Expiry date: Jan 29, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H50/50
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system for virtually planning a size and position of a prosthetic implant for a bone on a patient includes a database containing pre-defined form factor information for a plurality of different implants and a circuit for obtaining surface shape information of the bone. The system further includes a circuit for defining baseline location parameters for an implant location in relation to a virtual representation of the bone based on the surface shape information and a circuit for assessing a fit calculation of each implant in relation to the virtual representation of the bone based on the form factor in formation and a plurality of fit factors at each of a plurality of incremental positions in relation to the bone. Still further, the system includes a circuit for selecting a best fit implant size and position from all of the fit calculations.