Patent ID: 11865011
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A tibial insert comprising:
a lateral articular surface configured to articulate with a lateral condyle of a femoral component and including an arcuate articular path extending in an anterior-posterior direction, wherein the arcuate articular path when viewed in a cross-section plane has a curvature that includes a semi-planar section and wherein the semi-planar section defines a distal-most area of the lateral articular surface; and
a medial articular surface configured to articulate with a medial condyle of the femoral component, wherein the medial articular surface is asymmetrically shaped relative to the lateral articular surface and includes a medial dwell point that defines a distal-most point of the medial articular surface, and wherein the medial dwell point is located on the medial articular surface (i) between a first imaginary medial-lateral bisecting line of the tibial insert that includes an anterior-most end of the semi-planar section of the curvature of the lateral articular surface and a second imaginary medial-lateral bisecting line of the tibial insert that includes a posterior-most end of the planar section of the curvature of the lateral articular surface and (ii) posterior to an anterior-posterior midpoint of the planar section of the sagittal curvature of the lateral articular surface, and
wherein the medial articular surface includes a sagittal concave curvature, when viewed in a sagittal plane, that is defined by a plurality of curved sections, wherein the medial dwell point is located on the sagittal concave curvature, and
wherein the plurality of curved sections includes a first curved section adjacent to the medial dwell point and extending posterior therefrom, a second curved section adjacent the medial dwell point and extending anterior therefrom, a third curved section adjacent to the second curved section and extending anterior therefrom, a fourth curved section adjacent to the third curved section and extending anterior therefrom, and a fifth curved section adjacent the fourth curved section and extending anterior therefrom, and
wherein a radius of curvature of the first curved section is greater than a radius of curvature of the second curved section, and wherein a radius of curvature of the third curved section is less that the radius of curvature of the second curved section, less than a radius of curvature of the fourth curved section, and less than a radius of the fifth radius of curvature.