Posterior Stabilisierte Knieprothese

Details

Veröffentlichungs-Nr.

EP4338709

Aktenzeichen

EP22196026

Anmeldetag

16. September 2022

Veröffentlichung

7. Januar 2026

Erteilung

7. Januar 2026

Rechtsraum

EP

IPC

A61F2/38// A61F2/30

Abstract

The invention relates to a posterior stabilized knee prosthesis system (1), comprising a set (10) of femoral components (100) of different sizes (F1 to F9) configured for attachment to distal femurs of different sizes, each femoral component having a pair of spaced apart condyles (111, 112) defining an intercondylar notch (103) therebetween, and having a posterior cam (104) positioned in the intercondylar notch, wherein at least one of the condyles has a condyle surface (101, 102) curved in the sagittal plane (E) with multiple at least substantially tangential radii of curvature (R0, R1 to R5); and a set (20) of tibial components (200) of different sizes (T1 to T9) configured for attachment to proximal tibiae of different sizes, each tibial component having a bearing surface (201 202) curved in the sagittal plane with multiple at least substantially tangential radii of curvature (AR, PR), and having a post (203) extending upwardly from the bearing surface; wherein each size of femoral component is engageable to at least one size of tibial component to articulate by contact between the condyle surface and the bearing surface and/or by contact between the cam and the post. According to the invention the radii of curvature of the condyle surface each increase monotonically across increasing size of the femoral components, and the radii of curvature of the bearing surface each increase monotonically across increasing size of the tibial components.

Anmelder

Firma

Aesculap AG

Land

🇩🇪 Deutschland

Fachgebiete