Abstract The Hip Joint Bearing and Prosthesis distributes leads evenly throughout the large supporting area by creation of the same and distributed pressure per cmsq regardless of a direction of the load. The lubricating fluid hermeticaly enclosed between double walls of spherical ball provides practicaly frictionless joint movement. No residues from body fluids are penetrating into microstructure of bearing surfaces to solidify and cause rough spots and increase tear and wear of the joint. Post-operative dislocations due to separation of ball and socket are practically eliminated. Thick lubricating film and its elastic container have shock load absorption abilities. The prosthesis allows length and rotational hip joint bearing adjustments during surgery to acheive its optimal position.
A joint prosthesis for use in a human bone joint such as the acetabulum or the like comprising, a one-piece hollow double wall spherical ball member defined by an inner wall hermetically sealed to an outer wall, said inner and outer walls being spaced from each other to form cavity therebetween which includes a lubricating fluid therein, said walls terminating in a lower terminal first annular skirt which is surrounded by a second elongated annular skirt, said second skirt adapted to to be attached to a portion of another prosthetic joint member to effect a seal therewith to prevent contact with body fluids and tissue, said hollow ball and annular skirts being fabricated from biomedically inert elastic material and being provided with means to attach the joint prosthesis to a human bone joint.
Claim 2
Dependent Claim
133 words
A joint prosthesis for use in a human bone joint such as the acetabulum or the like comprising, a one-piece hollow double wall spherical ball member defined by an inner wall hermetically sealed to an outer wall, said inner and outer walls being spaced from each other to form cavity therebetween which includes a lubricating fluid therein, said walls terminating in a lower terminal first annular skirt which is surrounded by a second elongated annular skirt, said second skirt adapted to to be attached to a portion of another prosthetic joint member to effect a seal therewith to prevent contact with body fluids and tissue, said hollow ball and annular skirts being fabricated from biomedically inert elastic material and being provided with means to attach the joint prosthesis to a human bone joint.