Patent · US Active

Surface replacement of a femoral head

US7822588B2 · kind B2 · utility

29Cited by

3References

24Claims

0Family size

Assignee

Brainlab AG · DE

Inventors

Heiko Mueller · Heidelberg, DE
Robert Dick · Morganton, US
Martin ADAMSKI · Birkenfeld, DE
Gregor Tuma · Munich, DE

Key dates

Filing date	May 30, 2007
Grant date	Oct 26, 2010
Priority date	—
Expiry date	Jun 4, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2002/4633
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method for selecting a femoral implant based on models of a femoral neck and/or a femoral head of a patient is provided. A femoral neck model and/or femoral head model is produced from three-dimensional reference point spatial positions of the femoral neck or head, and a base size of a femoral implant model is ascertained based on the femoral head model. A femoral implant model is produced from the base size, and the implant model is positioned at a position in or on the femoral head model. An implant value is ascertained that indicates how many or what proportion of the ascertained reference point spatial positions are outside the implant model. If the implant value exceeds a predetermined value, the implant model is repositioned and the process is repeated. If the implant value does not exceed the value, an appropriate size and position of the implant is determined.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.