Anatomical concentric spheres tha
AssigneeDepuy Ireland Unlimited Company
InventorRichard D. Komistek
Life of this patent
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Abstract
Devices and methods for identifying and maintaining the concentric spherical centers of a femur and acetabulum during revision or joint replacement surgery so that post surgery the anatomical spherical centers are maintained. Also disclosed are novel techniques and devices to project images onto an anatomical feature, such as exposed bone, to virtually fit trial prosthetic components, establish bone cut markings, and establishing the anatomical spherical center of a joint.
Claims18
A trial for use with total hip arthroplasty, the trial comprising:
- a first spherical insert having a plurality of tabs mounted thereto, each of the plurality of tabs at least partially defining an orifice.
2-8. (canceled)
A guide for establishing the spherical center of a femoral ball, the guide comprising:
- a plurality of plates repositionable with respect to one another to overly and collectively approximate to the circumferential curvature of a distal femoral head, wherein the plurality of plates are operative to retain this approximation of circumferential curvature after dismounted from the distal femoral head.
10-12. (canceled)
A guide set for use in a total arthroplasty procedure, the guide set comprising:
- a plurality of guides adapted to interpose a human acetabulum and a human proximal femur, each of the guides including an acetabular cup mounted to a partial femoral component, the partial femoral component including an endplate adapted to contact at least one of an exterior of the human proximal femur and a portion of the human proximal femur not exposed prior to a bone cut.
14-53. (canceled)
A sleeve for a prosthetic insert, the sleeve comprising:
- a support structure adapted to be secured within an intramedullary canal of a bone, the support structure including an inner surface defining an interior channel adapted to receive a prosthetic implant, the inner surface having at least one of two projections and two grooves that are adapted to align with corresponding features of the prosthetic implant to guarantee proper orientation between the support structure and prosthetic implant upon axial insertion.
55-59. (canceled)
A proximal femoral prosthetic device, the device comprising:
- a femoral stem adapted to be seated within an intramedullary canal of a femur;
- and,
- an endplate mounted to the femoral stem, the endplate including a plurality of cut-outs at least partially accommodating throughput of a fastener.
62-73. (canceled)
A cutting guide for use with total hip arthroplasty, the cutting guide comprising:
- an arcuate guide for coupling to a proximal femur, the cutting guide including a concave section that mimics the arc of a natural femoral ball of a hip joint, the cutting guide including a retainer to fasten the cutting guide to the proximal femur.
A measurement instrument to measure at least one of diameter and circumference of removed femoral head.
(canceled)
Dependencies are inferred from the claim text.