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US 6,786,932 B1Granted
Femur end implant
OwnerArmand N. Blackmoreinventor
Life of this patent
Estimating the term…
Abstract
A femur head implant has an oblique neck. A ball portion of a hip joint is connected to a first neck end. A femur head hollow portion is connected to a second end of the oblique neck. A tubular shell is connected to a lower end of the hollow portion. A slot in the tubular shell permits changes in the inside diameter of a femur shaft passage through the tubular shell. Screws are tightened to reduce the inside diameter and clamp the implant to a femur shaft that is received in the shaft passage and extends into the femur head hollow portion. Passages are provided in the hollow portion for the insertion of bone cement into the hollow portion and the escape of gas from the hollow portion.
Claims12
An extremity bone end implant comprising:
- a neck with a neck joint end and a neck bone shaft end;
- an articulation joint portion attached to the joint end of the neck;
- a hollow portion, with a hollow portion joint end integral with the neck bone shaft end, and a hollow portion bone shaft end;
- a tubular shell with a shell joint end integral with the hollow portion bone shaft end, a generally cylindrical passage with a cylindrical passage diameter, a cylindrical passage axis, and a tubular shell bone shaft end;
- a single shell slot in the tubular shell extending from the tubular shell bone shaft end, through the shell joint end and into the hollow portion;
- a first clamp flange integral with the tubular shell on a first side of the shell slot;
- a second clamp flange integral with the tubular shell on a second side of the shell slot;
- at least one threaded bore in the second clamp flange and in axial alignment with at least one bore through the first clamp flange;
- a screw passing through the at least one bore through the first clamp flange and screwed into the at least one threaded bore in the second clamp flange, and wherein tightening the screw reduces the cylindrical passage diameter and clamps the extremity bone end implant to a bone shaft received in the generally cylindrical passage;
- a passage through a hollow portion wall for the injection of fluid into the hollow portion;
- and
- wherein the hollow portion is a closed chamber except for the generally cylindrical passage into the hollow portion bone shaft end, the single slot and the passage through the hollow portion wall for the injection of fluid into the hollow portion.
9 more elements
A femur head implant comprising:
- an oblique neck with a proximal ball support end and a lower neck end;
- a hip joint ball attached to the proximal ball support end of the oblique neck;
- a femur head hollow portion forming an enclosed hollow portion chamber, with a hollow portion upper end integral with the lower neck end of the oblique neck, and a hollow portion lower end;
- a tubular shell with a tubular shell upper end integral with the hollow portion lower end, a generally cylindrical passage in communication with the enclosed hollow portion chamber, with a cylindrical passage diameter, a cylindrical passage axis, and a tubular shell lower end;
- a single shell slot in the tubular shell extending from the tubular shell lower end, through the tubular shell upper end, and into the femur head hollow portion;
- a first clamp flange integral with the tubular shell on a first side of the shell slot;
- a second clamp flange integral with the tubular shell on a second side of the shell slot;
- a plurality of threaded bores through the second clamp flange, each of which is in axial alignment with one of a plurality of bores through the first clamp flange;
- a plurality of screws each of which passes through one of the plurality of bores through the first clamp flange and screws into one of the plurality of threaded bores through the second clamp flange;
- and
- wherein tightening the plurality of screws reduces the cylindrical passage diameter and clamps the femur head implant to a femur shaft received in the generally cylindrical passage.
8 more elements
A femur head implant comprising:
- an oblique neck with a proximal ball support end and a lower neck end;
- a hip joint ball attached to the proximal ball support end of the oblique neck;
- a femur head hollow portion, with a hallow portion wall of impervious thin metal, a hollow portion upper end
- a femur head hollow portion, with a hallow portion wall of impervious thin metal, a hollow portion upper end integral with the lower neck end of the oblique neck, and a hollow portion lower end;
- a tubular shell with a tubular shell upper end integral with the hollow portion lower end, a generally cylindrical passage with a cylindrical passage diameter, a cylindrical passage axis, and a tubular shell lower end;
- a shell slot in the tubular shell extending from the tubular shell lower end, through the tubular shell upper end, and into the femur head hollow portion;
- a first clamp flange integral with the tubular shell on a first side of the shell slot;
- a second clamp flange integral with the tubular shell on a second side of the shell slot;
- a plurality of threaded bores through the second clamp flange, each of which is in axial alignment with one of a plurality of bores through the first clamp flange;
- a plurality of screws each of which passes through one of the plurality of bores through the first clamp flange and screws into one of the plurality of threaded bores through the second clamp flange;
- wherein tightening the plurality of screws reduces the cylindrical passage diameter, clamps the femur head implant to a femur shaft received in the generally cylindrical passage and closes the generally cylindrical passage from the first side of the shell slot to the second side of the shell slot;
- at least one passage through the hollow portion wall of the femur head hollow portion, for the injection of a fluid into the femur head hollow portion;
- and
- at least one air passage through the hollow portion wall for the escape of gases from the femur head hollow portion.
11 more elements
Dependencies are inferred from the claim text.