Depth of Impaction

US8979859B2 · kind B2 · utility

Assignee

• MAKO Surgical Corp. · US

Inventors

• Richard Leparmentier · Fort Lauderdale, US
• Brian Schmitz · Fort Lauderdale, US
• Renen Bassik · Brookline, US
• Chunyan Wu · Hefei, CN
• Jason Wojcik · Weston, US

Key dates

• Filing date: Jun 30, 2011
• Grant date: Mar 17, 2015
• Expiry date: Jan 13, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2/34
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for determining a depth of impaction of a prosthetic cup into an acetabulum using an end effector and a movable impactor shaft is provided, wherein the prosthetic cup may be positioned at a distal end of the impactor shaft. The method may position the distal end of the impactor shaft at a known pose relative to the end effector, track a spatial pose of the end effector relative to a spatial pose of the acetabulum, determine a spatial pose of the prosthetic cup based on the spatial pose of the end effector and the known pose between the distal end of the impactor shaft and the end effector, and determine the depth of impaction based on the spatial pose of the prosthetic cup and the spatial pose of the acetabulum.