Bone cement mixing apparatus having improved gearing arrangement for driving a mixing blade

US6702455B2 · kind B2 · utility

Assignee

• DePuy Orthopaedics, Inc. · US

Inventors

• Timothy G. Vendrely · Warsaw, US
• Jack F. Long · Warsaw, US
• Christopher A. Battles · Seymour, US
• Paul DeCesare · Easton, US
• Patrick N. Gutelius · Monroe, US
• Sam Sackett · Warsaw, US

Key dates

• Filing date: Nov 15, 2001
• Grant date: Mar 9, 2004
• Expiry date: Jul 12, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F2101/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A bone cement mixing device has a canister which is modular in design and constructed from a transparent material. The mixing device further has a mixing head assembly having a crank which is operatively coupled to a mixing blade via a gear train. The gear train is configured to drive the mixing blade in a reciprocating manner including the varying of the angular velocity, direction of travel, and angular distance of travel of the blade while the crank is rotated at a constant velocity and direction. The mixing blade has a fluid passage defined therein which allows the liquid cement component to be delivered at various locations within the mixing chamber of the canister. A method of mixing bone cement is also disclosed.