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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11478168 B1

PDFFull Text
Date of Patent:
Oct. 25, 2022

Filed:

Aug. 05, 2021

Determining a range of motion of an artificial knee joint

Applicants:

Smith & Nephew, Inc., Memphis, TN (US);

Smith & Nephew Asia Pacific Pte. Limited, Singapore, SG;

Smith & Nephew Orthopaedics Ag, Zug, CH;

Inventors:

Oliver Fleig, Baldham, DE;

Christian Brack, Neusaess, DE;

Zohar Leder, Munich, DE;

Martin Bauer, Munich, DE;

Assignees:

Smith & Nephew, Inc., Memphis, TN (US);

Smith & Nephew Orthopaedics AG, Zug, CH;

Smith & Nephew Asia Pacific Pte. Limited, Singapore, SG;

Attorney:

DLA Piper LLP

Primary Examiner:

Amelie R Davis

Assistant Examiner:

Helene Bor

Int. Cl.
CPC ...
A61B 5/11 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01); A61B 34/10 (2016.01); A61B 5/107 (2006.01); A61B 5/00 (2006.01);
U.S. Cl.
CPC ...
A61B 5/1121 (2013.01); A61B 5/1072 (2013.01); A61B 5/4585 (2013.01); A61B 34/10 (2016.02); A61B 34/20 (2016.02); A61B 90/361 (2016.02); A61B 90/39 (2016.02); A61B 2034/104 (2016.02); A61B 2034/2055 (2016.02); A61B 2090/397 (2016.02);
Abstract

A data processing method for determining a range of motion of an artificial knee joint which connects a femur and a tibia via a medial ligament and a lateral ligament, wherein at least the femur comprises an implant which forms a medial condyle and a lateral condyle, the method comprising the steps of: acquiring the maximum lengths of the lateral ligament and the medial ligament for a particular flexion angle of the knee joint; calculating a first virtual position between the femur and the tibia in which the lateral condyle of the femoral implant touches the tibia and the medial ligament is stretched to its maximum length; calculating a maximum valgus angle of the range of motion from the first virtual position; calculating a second virtual position between the femur and the tibia in which the medial condyle of the femoral implant touches the tibia and the lateral ligament is stretched to its maximum length; and calculating a maximum yarns angle of the range of motion from the second virtual position.

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