System for performing hip prothesis revision surgery
OwnerW. E. Michael Mikhailinventor
Life of this patent
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Abstract
A cannulated tamp having a proximal compressive flange as used for compacting bone graft material in a femur having a cavity being prepared to receive a femural prosthesis. The tamp of the present invention is particularly useful in achieving uniform compaction in the proximal area of the femur. The compressive flange may be monolithic with the stem of the tamp or may be a separate modular member affixed thereto. Under one embodiment a series of passageways are provided for attachment to a source of vacuum for evacuating blood and other fluids from the prepared cavity.
Claims38
In combination with handle having an impacting surface, a tamp for compacting bone graft material in a femur being prepared to receive a femoral prosthesis comprising:
- (a) a tapered stem extending from a distal end in increasing cross-sectional size to a proximal end, said stem having anterior, posterior, medial and lateral surfaces adjacent said proximal end, said proximal end having a handle engagement rail extending therefrom;
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- (b) a flange extending outwardly from major portions of said anterior, posterior and medial surface for compacting bone graft material.
In combination with a handle having an impacting surface, a tamp for compacting bone graft material in a femur being prepared to receive a femoral prosthesis comprising:
- (a) a tapered stem extending from a distal end in increasing cross-sectional size to a proximal end, said stem having anterior, posterior, medial and lateral surfaces adjacent said proximal end and a passageway extending from said distal end to said proximal end, a protrusion extending from said proximal end, said protrusion including a handle engaging rail, a recessed area adjacent said proximal end and an enlarged area spaced from said proximal end defining a shoulder;
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- (b) a modular flange for compacting bone graft material engaged to said protrusion in said recessed area and extending outwardly beyond said anterior, posterior and medial surfaces a distance not to exceed the thickness of bone graft material as measured from each of said anterior, posterior and medial surfaces, respectively.
In combination with a handle having an impacting surface, a tamp for compacting bone graft material in a femur being prepared to receive a femoral prosthesis comprising:
- (a) a tapered stem extending from a distal end in increasing cross-sectional size to a proximal end, said stem having anterior, posterior, medial and lateral surfaces adjacent said proximal end, a central passageway extending from major portion of said distal end to said proximal end and a plurality of connector passageways extending between said central passageway and said anterior, posterior, medial or lateral surface, said proximal end having a handle engaging rail extending therefrom;
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- (b) a flange extending outwardly from said anterior, posterior and medial surfaces for compacting bone graft material.
A method of preparing a medullary canal of a femur for implantation of a hip prosthesis having a stem portion of predetermined configuration wherein said femur has a surgically prepared proximal end and a prepared cavity larger than said predetermined configuration extending distally from said proximal end comprising:
- (a) placing bone graft material in said cavity;
- (b) providing a tamp having a stem extending from a proximal end to a distal end and having a configuration similar to said predetermined configuration and having a passageway extending through said stem from said distal end to said proximal end, said tamp having a flange extending outwardly from said stem at said stem proximal end;
- (c) positioning a guidewire in said cavity;
- (d) placing said tamp over said guidewire with the guidewire extending through said passageway;
- (e) impacting said tamp against said bone graft material with said stem and said flange to compact said bone graft material substantially to said prepared proximal end to form a prosthesis receiving cavity, said flange being of such dimension as permit said compacting without said flange contacting said prepared proximal end.
Dependencies are inferred from the claim text.