Adaptable stem for endoprosthesis

Details Adaptable stem for endoprosthesis Adaptable stem for endoprosthesis

1993-04-30

1994-12-27

Isabella, David

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

Implantable prosthesis

Bone

623 16, 623 18, A61F 236, A61F 232

Patent

active

053761235

ABSTRACT:
A stem for an endoprosthesis to be anchored in a bone (3) comprises a chamber (4) which surrounds the stem periprosthetically, which can be sealed in a pressure tight manner and which can be expanded with a thermoplastic or thermostable filling material (16). The rigid stem (1) of the endoprosthesis is connected mechanically to the bone (3) via the expandable chamber (4) by means of the filling material (16). The filling material is isolated from the bone (3), however, by the wall of the pressure-tight chamber (4). This makes it possible to ensure that the outer wall of the chamber (4) adjacent to the bone is extremely biocompatible.

REFERENCES:
patent: 4650489 (1987-03-01), Thompson
patent: 4778474 (1988-10-01), Homsy
patent: 4851004 (1989-07-01), Homsy
patent: 4904258 (1990-02-01), Pommier et al.
patent: 4944754 (1990-07-01), Linkow et al.
patent: 4963151 (1990-10-01), Ducheyne
patent: 5035713 (1991-07-01), Friis
patent: 5133767 (1992-07-01), Frey et al.

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