Femoral surgical instrument and method of using same

US9113918B2 · 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: Mar 15, 2013
• Grant date: Aug 25, 2015
• Expiry date: Aug 11, 2033

Classification

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

Abstract

An orthopaedic surgical instrument assembly 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.