Radial implant system

US6709459B1 · kind B1 · utility

Assignee

• Mayo Foundation for Medical Education and Research · US

Inventors

• William P. Cooney, III · Rochester, US
• Bernard Morrey · Rochester, US
• Shawn O'Driscoll · Rochester, US
• Ronald L. Linsheid · Rochester, US
• David A. Leibel · Princeton, US
• Fredrick Schultz · Rochester, US

Key dates

• Filing date: Aug 31, 2000
• Grant date: Mar 23, 2004
• Expiry date: Aug 31, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00796
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A prosthesis for the radius bone in the arm of a patient includes a head shaped for engagement with the capitellum of a humerus bone and the radial notch of the ulna. It also has a curved stem that extends from the head and is tapered with a distally decreasing cross section for insertion into the medullary canal of the radius. A system for implanting the prosthesis requires a resection guide for placing the forearm of the patient in a precise anatomical orientation for resection of the radius bone. The resection guide includes a notched alignment rod attached to an adjustable flange and a reference flange for aligning the forearm for a cut of the radius bone perpendicular with the axis of rotation of the radius bone about the ulna, and for measuring the size of the resection and prosthesis.