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EP0363151A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Prosthetic device

Assignee: Howmedica Osteonics Corp
•
Filing: 1989-10-03
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Granted: —
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Expires: 2009-10-03
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Abstract

Abstract The bone prosthesis of the present invention comprises a first body member (2) or stem for placement into a bone cavity, such as an intramedullary canal. The body member (2) is configured and dimensioned so as to provide a nonuniform interference press-fit. The apparatus further comprises a second body member or broach (80) for placement into and removal from a bone cavity, the broach (80) configured and dimensioned so as to prepare the bone cavity so as to provide a nonuniform interference press-fit with the stem (2). The apparatus further comprises a distal sleeve (32) configured and dimensioned so as to be attached to the stem so as to centralize the stem in the bone cavity. The distal sleeve (32) preferably is provided with an interior conical slope and an exterior conical slope on a portion thereof to aid in insertion into the canal. The stem (2) further comprises at least one groove (27) and preferably a plurality of grooves (27) along its corners. These grooves (27) are nonparallel to the longitudinal axis of the stem (2) and do not extend over any one entire side of the stem (2). The stem (2) can be provided with an area of cancellous texture which comprises substantially randomly patterned array of multiple curved-line surface unevenness, such as indentations or protrusions. The present invention also is directed to a method comprising utilization of the broach (80), the stem (2) and the distal sleeve (32) so as to provide a nonuniform press-fit between the bone prosthesis and the bone cavity while centralizing the stem in the bone cavity.

Inventors

  • 👤 Philip C. Noble
  • 👤 Mary Beth Padgett

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 21:17
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30771; A61F2/30721; A61F2/30724; A61F2/32; A61F2/36; A61B; A61B17/00; A61B17/16; A61B17/1659; A61F2/3662; A61F2/367; A61F2/3676; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30138; A61F2002/30158; A61F2002/30199; A61F2002/30205; A61F2002/3021; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2/30734; A61F2002/30738; A61F2002/30795; A61F2002/308; A61F2002/3082; A61F2002/30827; A61F2002/30828; A61F2/30907; A61F2002/30919; A61F2/3094; A61F2002/30978; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0017; A61F2230/0026; A61F2230/0063; A61F2230/0067; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00179

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 47 words
An apparatus characterized by a body member 2 for placement into a bone cavity, said body member 2 configured and dimensioned so as to provide a nonuniform interference press-fit with the bone cavity along a portion of the proximal end surface 4 of said body member 2.
Claim 2
Independent Claim 47 words
An apparatus characterized by a body member 2 for placement into a bone cavity, said body member 2 configured and dimensioned so as to provide a nonuniform interference press-fit with the bone cavity along a portion of the proximal end surface 4 of said body member 2.
Claim 3
Dependent Claim 23 words
An apparatus according to claim 1 further comprising an uneven surface portion on said proximal end surface 4 of said body member 2.
Claim 4
Dependent Claim 15 words
An apparatus according to claim 2 wherein said uneven surface is of a cancellous texture.
Claim 5
Dependent Claim 29 words
An apparatus according to claim 1 further comprising at least one groove 27 of a predetermined length disposed on said proximal end surface 4 of said body member 2.
Claim 6
Independent Claim 92 words
An apparatus comprising a body member 2 defining a longitudinal axis and a circumference, said body member 2 having an anterior side, a posterior side, a lateral side 5 and a medial side 6, said body member being provided with at least one groove 27 along at least one of the antero-lateral, postero-lateral, antero-medial or postero-medial edges, each of said grooves 27 extending in a plane not parallel to the longitudinal axis of said body member 2, and said grooves 27 extending around less than the circumference of the body member 2.
Claim 7
Independent Claim 92 words
An apparatus comprising a body member 2 defining a longitudinal axis and a circumference, said body member 2 having an anterior side, a posterior side, a lateral side 5 and a medial side 6, said body member being provided with at least one groove 27 along at least one of the antero-lateral, postero-lateral, antero-medial or postero-medial edges, each of said grooves 27 extending in a plane not parallel to the longitudinal axis of said body member 2, and said grooves 27 extending around less than the circumference of the body member 2.
Claim 8
Dependent Claim 34 words
An apparatus according to claim 5 wherein said body member 2 is provided with said grooves 27 along at least two of said antero-lateral, postero-lateral, antero-­medial or postero-medial edges of said body member 2.
Claim 9
Dependent Claim 33 words
An apparatus according to claim 5 wherein said body member 2 is provided with said grooves 27 along at least three of said antero-lateral, antero-medial, postero-­lateral and postero-medial edges of said body member.
Claim 10
Independent Claim 29 words
An apparatus according to claims 5 wherein said stem 2 is provided with said grooves 27 along each of said antero-lateral, antero-medial, postero-lateral and postero-­medial edges of said stem.
Claim 11
Independent Claim 26 words
An apparatus comprising a body member 2 for placement into a bone cavity, said body member being provided with a cancellous texture on a portion thereof.
Claim 12
Independent Claim 26 words
An apparatus comprising a body member 2 for placement into a bone cavity, said body member being provided with a cancellous texture on a portion thereof.
Claim 13
Dependent Claim 66 words
An apparatus according to claim 9 wherein said body member 2 defines a longitudinal axis and a circumference, said body member having a proximal end 4 , a distal end 3, an anterior side, a posterior side, a lateral side 5 and a medial side 6, said body member being provided with a macro cancellous texture on a portion of at least one of said sides.

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