Monopolar constrained acetabular component

Details Monopolar constrained acetabular component Monopolar constrained acetabular component

2007-01-30

2007-01-30

Barrett, Tom (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

C623S022210, C623S022240

Reexamination Certificate

active

10144762

ABSTRACT:
The present invention provides monopolar acetabular liners that can enclose a femoral head to form a hip replacement prosthesis, wherein the liner has a rim that creates an orifice, wherein the orifice has a diameter that is smaller than the diameter of the femoral head, and wherein the liner encompasses greater than 50 percent of the volume of the head, wherein a constraining ring can be used in conjunction with the monopolar constrained acetabular liner to provide additional support for the femoral head to stay with the acetabular liner and avoid dislocation. Assemblies, complete prosthetic replacements, and methods of replacing also are provided. Liners and constraining rings having no, one or more recesses also are provided.

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Complaint.
Amended Complaint.
Answer of Defendants Massachusetts Institute of Tech. and the General Hospital Corporation to Amended Complaint and Amended Counter Claim.
Reply on Plaintiff, Ambuj D. Sagar, PH.D., to Amended Counterclaim of Def. Massachusetts Institute of Technology and the General Hospital Corp.
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