Method of using a femoral surgical instrument

US9730706B2 · kind B2 · utility

Assignee

• DEPUY IRELAND UNLIMITED COMPANY · IE

Inventors

• Rebecca L. Chaney · Warsaw, US
• Craig S. Tsukayama · Fort Wayne, US
• Janelle M. Lubensky · Winona Lake, US
• Duncan Young · Wormald Green, GB
• Jonathan C. Lee · Mishawaka, US
• Jeffrey M. Walcutt · Fort Wayne, US
• Francisco A. Amaral · Acushnet, US
• Carl F. Livorsi · Lakeville, US
• Peter James · Oldbury, GB

Key dates

• Filing date: Aug 25, 2015
• Grant date: Aug 15, 2017
• Expiry date: Aug 25, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/4681
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method of using an orthopedic surgical instrument assembly that includes an instrument handle configured to clamp a broach and femoral stem trial assembly. A depth stop is configured to removably couple to the instrument handle. When the broach and femoral stem trial are advanced into a medullary canal of a patient's femur, a substantially planar proximal surface of the depth stop is configured to engage the distal surface of the femur, determining the depth of the broach in the medullary canal. The proximal surface of the depth stop is parallel to the joint line, defining an oblique angle to the anatomical axis of the femur. The depth stop may be attached to the instrument handle at a number of positions to control the depth of the broach. The assembly may include a spacer plate removably coupled to the depth stop that distalizes the broach in the medullary canal.