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 Title: |
US5658351:
Intramedullary centralizer
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Dudasik, Michael W.; Nutley, NJ
Krackow, Kenneth; Williamsville, NY
Noble, Philip C.; Houston, TX
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| Assignee: |
Howmedica Inc., New York, NY
other patents from HOWMEDICA, INC. (258955) (approx. 141)
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| Published / Filed: |
1997-08-19
/ 1995-07-31
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| Application Number: |
US1995000510045
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| IPC Code: |
Advanced:
A61F 2/30;
A61F 2/00;
A61F 2/36;
A61F 2/46;
Core:
more...
IPC-7:
A61F 2/36;
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| ECLA Code: |
A61F2/30B2;
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| U.S. Class: |
Current:
623/023.48;
606/095;
Original:
623/023;
606/095;
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| Field of Search: |
623/019,23,18,22
606/062,67,95
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| Priority Number: |
| 1995-07-31 |
US1995000510045 |
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| Abstract: |
A centralizer for the stem of a cementable prosthetic orthopedic implant that is implanted into the medullary canal of a bone has a hollow annular body with a tapered interior surface for receiving a tapered stem of the implant. The centralizer has four fins spaced around the exterior surface of its annular body with the fins extending radially outwardly in a direction generally perpendicular to the longitudinal axis extending along the stem in a proximal-distal direction. The annular body of the centralizer has a proximal and a distal end surface spaced a predetermined distance apart with the fins having a base adjacent the body extending over a substantial portion of the predetermined distance. Adjacent fins are offset from neighboring fins in a proximal-distal direction so that when the proximal-distal dimension of the annular body is maintained, it generates a wavelike structure for the centralizer body.
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| Attorney, Agent or Firm: |
Richardson, Peter C. ;
Akers, Lawrence C. ;
Augustin, Raymond W. ;
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| Primary / Asst. Examiners: |
Willse, David H.;
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE AU EP JP
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| Family: |
Show 10 known family members
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First Claim:
Show all 20 claims |
We claim:
1. A centralizer for the stem of a prosthetic orthopedic implant adapted for implantation into a medullary canal of a bone, said centralizer comprising:
- a hollow annular body having an interior surface sized to receive the stem of the implant; and
- at least four fins spaced around an exterior surface of said annular body, said fins extending outwardly from said surface in a direction generally perpendicular to a longitudinal axis extending along the stem in a proximal-distal direction, each of said fins lying in a plane parallel to said longitudinal axis of said stem, each of said fins being offset from neighboring fins in said proximal-distal direction.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 16 U.S. patent(s) that reference this one
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