Rotary Arc Patella Articulating Geometry - US12594168B2
Summary
USPTO granted patent US12594168B2 to Howmedica Osteonics Corp. covering a rotary arc patella implant design with elliptically shaped median ridge articulating surface and dual attachment features for onlay and inlay fixation techniques. The patent includes claims to the implant geometry, bone preparation methods, and implant-bone interface techniques.
What changed
USPTO issued patent grant US12594168B2 for a patellar implant with improved articulating geometry designed for knee replacement applications. The invention covers an elliptically shaped median ridge on the articulating surface and a non-planar anterior surface allowing variable implant thickness. The patent also protects dual attachment mechanisms for both onlay and inlay surgical fixation techniques.
For manufacturers of orthopedic knee implants, this patent establishes intellectual property rights that may constrain design alternatives for patellar components. Competitors developing similar elliptical ridge geometries or dual fixation patella implants should review the granted claims for potential infringement risks.
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Apr 7, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Rotary arc patella articulating geometry
Grant US12594168B2 Kind: B2 Apr 07, 2026
Assignee
Howmedica Osteonics Corp.
Inventors
Stuart L. Axelson, Jr., Robert Davignon, Sanghita Bhattacharya, Michael C. Ferko, Peter Wellings
Abstract
Disclosed herein are patellar implants and methods to prepare bone for receiving the same. The patellar implant may include an articulating surface with an elliptically shaped median ridge. The anterior surface of the patellar implant may have a non-planar surface to engage with a resected natural patella. The non-planar surface may allow for varying thickness of the patellar implant. The patellar implant may include dual attachment features to secure patellar implant to a resected patella by onlay and inlay techniques. A method for attaching a patellar implant to a patella may include onlay and inlay techniques and may further include bone preparation at the implant-bone interface.
CPC Classifications
A61F 2/3877 A61F 2002/648 A61F 2/3859 A61B 17/1677 A61B 17/1767
Filing Date
2020-12-08
Application No.
17114718
Claims
12
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