Modular femur fixation device
First Claim
Patent Images
1. An implant for the fixation of a bone fracture comprising:
- an upper side plate with an inner surface, an outer surface, at least one mounting hole, a beveled receiving channel located below a cylindrical barrel and a head, wherein said barrel comprises an elongated hollow cylinder positioned at an oblique angle with respect to said head so that when the inner surface of said head is mounted against the cortical wall of a bone said barrel is substantially aligned with the longitudinal axis of the femoral neck; and
a lower side plate with an inner and outer surface, said lower side plate also having a beveled outward flange slidably engagable at an engagement location with said beveled receiving channel in said upper side plate, said beveled outward flange being thinner than any other part of the lower side plate, and said lower side plate including at least one mounting-hole for mounting said lower side plate to a cortical wall.
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Abstract
A modular implant for use in stabilizing femoral bone disorders resulting from injury, disease or congenital defects. In one embodiment the implant has an upper side plate with a widened head and a angled barrel, and a lower side plate adapted to be engaged with the upper side plate in a tongue and groove configuration. The side plates, once engaged, conform with the cortical wall of the femur.
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Citations
15 Claims
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1. An implant for the fixation of a bone fracture comprising:
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an upper side plate with an inner surface, an outer surface, at least one mounting hole, a beveled receiving channel located below a cylindrical barrel and a head, wherein said barrel comprises an elongated hollow cylinder positioned at an oblique angle with respect to said head so that when the inner surface of said head is mounted against the cortical wall of a bone said barrel is substantially aligned with the longitudinal axis of the femoral neck; and a lower side plate with an inner and outer surface, said lower side plate also having a beveled outward flange slidably engagable at an engagement location with said beveled receiving channel in said upper side plate, said beveled outward flange being thinner than any other part of the lower side plate, and said lower side plate including at least one mounting-hole for mounting said lower side plate to a cortical wall. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implant for the stabilization of a fractured femur bone comprising:
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an upper side plate with inner and outer surfaces, a top end and a bottom end wherein a longitudinal axis extends between said top end and said bottom end, a cylindrical barrel mounted to said inner surface, adjacent said top end, at an oblique angle with respect to said inner surface; an enlarged head portion substantially wider than said barrel with offset mounting holes located on either side of the longitudinal axis of said upper side plate and below said barrel, and a lower engagement means [and wherein said barrel comprises an elongated hollow cylinder positioned at an oblique angle with respect to said enlarged head so as to be in substantial alignment with the longitudinal axis of the femoral neck; and a lower side plate with an inner and outer surface, removably attached with said upper side plate defining an engagement location, and having at least one mounting hole for attachment to the femoral shaft. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An implant for the fixation of a femoral fracture comprising:
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an upper side plate having an inner and an outer surface, a cylindrical barrel and a head, wherein said barrel comprises an elongated hollow cylinder positioned at an oblique angle with respect to said head so that when said head is mounted against the cortical wall of a femur said barrel is substantially aligned with the longitudinal axis of the femoral neck; and a lower side plate having an inner and an outer surface slidably engaged with said upper side plate at a point below said hollow cylinder such that, when the upper and lower side plates are fully engaged, the distance between the inner and outer surfaces formed by the engaged side plates is substantially uniform in those regions adjacent either side of a location where the engagement is accomplished, and wherein the lower side plate includes at least one mounting-hole for mounting said lower side plate to a femoral cortical wall. - View Dependent Claims (15)
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Specification