Ceramic manufactures
AssigneesLouis A. Serefin, Jr. Trust, Xylon LLC
InventorsLouis A. Serafin, Jr., Gerald J. Jerry, Jr., Nicholas H. Burlingame
Life of this patent
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Abstract
Prosthetic knee implant or implant component is made with a magnesium oxide stabilized transformationally toughened zirconia.
Claims20
A prosthetic implant or implant component, which comprises a knee replacement joint implant or joint implant component, which is at least one of the following (A, B):
- (A) a magnesium oxide stabilized transformation toughened zirconia ceramic (an Mg-TTZ) femoral component selected from the group consisting of a unicompartmental femoral condylar component;
- a cruciate-retaining knee implant femoral component, which includes medial and lateral condylar articular surfaces;
- a posterior stabilized knee femoral component, which includes medial and lateral condylar articular surfaces;
- and a rotational knee femoral component frame, which includes medial and lateral condylar articular surfaces;
- and
- (B) at least one member selected from the group consisting of a tibial component for articulation against corresponding condylar surface(s) of the femoral component;
- and a patellofemoral joint implant;
- wherein feature “A” is necessarily present.
A femoral component to a posterior stabilized knee comprising a magnesium oxide stabilized transformation toughened zirconia ceramic (an Mg-TTZ) mass including a frame having side walls and a top that bridge left and right condylar flanges that have condyles, which form an intracondylar notch;
- and a posterior stabilizing stop within said notch.
An artificial rotation device containing total knee implant prosthesis ensemble, which comprises:
- a femoral component having a magnesium oxide stabilized transformation toughened zirconia ceramic (an Mg-TTZ) mass that includes a femoral component frame as a part of the femoral component, wherein:
- the rotation device, which is also pan of the femoral component, includes a swingable, depending male-type part;
- the femoral component frame is joined to medial and lateral condyles as part of the Mg-TTZ mass, which have respective condylar articular surfaces;
- and
- the rotation device is mounted in said frame;
- and
- a tibial component with meniscal articular surfaces that mate with the condylar articular surfaces of the femoral component, plus a rotation device receptacle that includes a female-type part, so that the femoral component is matable to the tibial component through male-female cooperation of the rotation device and the rotation device receptacle, and the artificial rotation device containing total knee implant prosthesis ensemble generally has natural load transfer capability by anatomical gliding contact of the condylar and meniscal articular surfaces against one another during anatomical rotation in addition to anatomical flexion and extension.
Dependencies are inferred from the claim text.