Prosthesis with variable fit and strain distribution

Details Prosthesis with variable fit and strain distribution Prosthesis with variable fit and strain distribution

1996-06-28

1999-08-10

Milano, Michael J.

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

Implantable prosthesis

Bone

623 23, 623 16, 606 77, A61F 230

Patent

active

059351721

ABSTRACT:
A joint prosthesis comprising a metallic body having a plurality of negative surface features such as through-slots, deep grooves, tunnels or pits, or valleys defined between projecting fingers or flutes. The metallic body constitutes the structural component of the prosthesis, such as a shell, plate or stem. A second part attaches to and extends the body to provide both a fit and a change in the initial stiffness. The second part provides a time-evolving structural coupling, such that the prosthesis initially fits the patient's remnant bone to provide rigid fixation, while the mechanical properties shift with time in vivo to change its contact or loading characteristics. In one embodiment a femoral stem joint prosthesis is modular and the first, or structural component, accommodates bio-absorbable second components of varying geometries and dimensions which fit a range of bore sizes, and achieve different stiffnesses or strengths affecting load or strain distribution.

REFERENCES:
patent: 4495664 (1985-01-01), Blanquaert
patent: 4713076 (1987-12-01), Draenert
patent: 4851008 (1989-07-01), Johnson
patent: 4878917 (1989-11-01), Krantz et al.
patent: 4976736 (1990-12-01), White et al.
patent: 4990161 (1991-02-01), Kampner
patent: 5007931 (1991-04-01), Smith
patent: 5061286 (1991-10-01), Lyle
patent: 5074879 (1991-12-01), Pappas et al.
patent: 5152795 (1992-10-01), Sioshansi et al.
patent: 5201766 (1993-04-01), Georgette
patent: 5201771 (1993-04-01), Belykh et al.
patent: 5258034 (1993-11-01), Furlong et al.
patent: 5336265 (1994-08-01), Serbousek et al.
patent: 5343877 (1994-09-01), Park
patent: 5376123 (1994-12-01), Klaue et al.
patent: 5458653 (1995-10-01), Davidson
patent: 5507828 (1996-04-01), Maumy et al.
patent: 5514184 (1996-05-01), Doi et al.
patent: 5571204 (1996-11-01), Nies
patent: 5679294 (1997-10-01), Umezu et al.
patent: 5702484 (1997-12-01), Goymann et al.
patent: 5725590 (1998-03-01), Maumy et al.

Affiliated with

Also associated with

Rating

Prosthesis with variable fit and strain distribution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Prosthesis with variable fit and strain distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prosthesis with variable fit and strain distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1114862