US5470336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for performing hip prosthesis revision surgery
Assignee: HOWMEDICA INTERNATIONAL S DE RL
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Filing: 1993-10-26
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Granted: 1995-11-28
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Expires: 2013-10-26
Abstract
Abstract An apparatus for performing hip prosthesis revision surgery includes means for preparation of the cavity left after removal of the original prosthesis. A tamp having a longitudinal passageway extending longitudinally through the stem portion thereof and a guidewire positioned in the cavity function to compact bone graft material in the cavity and form a precisely contoured new hip prosthesis receiving cavity.
Inventors
- 👤 Robin S. M. Ling
- 👤 W. E. Michael Mikhail
- 👤 James J. Elting
- 👤 Graham A. Gie
- 👤 Tom J. J. H. Slooff
- 👤 Jacques J. Vanderlinden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/164; A61B17/1659; A61B17/1662; A61B17/1664; A61B17/1668; A61B17/17; A61B17/1739; A61B17/1742; A61B17/175; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8847; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30723; A61F2/30724; A61F2/32; A61F2/36; A61F2/46; A61F2/4601; A61F2/4603; A61F2/4614; A61F2/4657; A61F2/4684; A61B90/00; A61B90/06; A61B2090/062; A61F2/3662; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30667; A61F2002/3069; A61F2002/30726; A61F2002/3678; A61F2002/368; A61F2002/3694; A61F2002/4619; A61F2002/4631; A61F2002/4662; A61F2002/4677; A61F2002/4681
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
Apparatus for use in preparing a femoral cavity to receive (1) bone graft material and (2) a femoral hip prosthesis of predetermined size and configuration comprising in combination: (a) an elongate handle which is made of a material of suitable strength to transmit impacts made thereto; (b) a guidewire; (c) means for supporting said guidewire longitudinally in said cavity; (d) a cannulated tamp having a stem extending from a proximal end having a relatively large cross-sectional size and tapering to a distal end having a relatively small cross-sectional size, said stem having (1) a size larger than and a configuration similar to said femoral hip prosthesis and (2) a passageway sized to slideably receive said guidewire, said passageway extending from said proximal end to said distal end; and (e) means offset from said passageway extending from said proximal end for engagement by said handle, said proximal end and means for engagement being positioned to transmit impacts directed to said handle to said distal end, said tamp is made of a material having suitable strength to transmit impacts which compact crushed cancellous bone graft material to a desired density.
Claim 2
Dependent Claim
188 words
Apparatus for use in preparing a femoral cavity to receive (1) bone graft material and (2) a femoral hip prosthesis of predetermined size and configuration comprising in combination: (a) an elongate handle which is made of a material of suitable strength to transmit impacts made thereto; (b) a guidewire; (c) means for supporting said guidewire longitudinally in said cavity; (d) a cannulated tamp having a stem extending from a proximal end having a relatively large cross-sectional size and tapering to a distal end having a relatively small cross-sectional size, said stem having (1) a size larger than and a configuration similar to said femoral hip prosthesis and (2) a passageway sized to slideably receive said guidewire, said passageway extending from said proximal end to said distal end; and (e) means offset from said passageway extending from said proximal end for engagement by said handle, said proximal end and means for engagement being positioned to transmit impacts directed to said handle to said distal end, said tamp is made of a material having suitable strength to transmit impacts which compact crushed cancellous bone graft material to a desired density.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1, wherein said stem is polished to a smooth finish.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 1, wherein said cannulated tamp is sized in relation to said femoral hip prosthesis to provide 2-4 millimeters of bone cement in all portions of said stem.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |