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US 2017/0000616 A1Published application
Modular taper seal for orthopaedic prosthetic hip assembly
AssigneeDePuy Synthes Products, Inc.
InventorsJustin D. Grostefon, Jeffrey A. McAnelly
Life of this patent
Estimating the term…
Abstract
An othopaedic prosthetic hip assembly for use during performance of a hip replacement procedure includes a femoral stem component having a tapered trunnion and a femoral head component having a tapered bore. Upon insertion of the tapered trunnion into the tapered bore, a taper lock is formed and a seal provides a fluid-tight closure.
Claims16
An orthopaedic prosthetic hip assembly, comprising:
- a stem component configured to be received in a proximal end of a patient's surgically-prepared femur, the stem component comprising a neck including a tapered trunnion and an elongated body extending distally from the neck,
- a femoral head component configured to engage a surgically-prepared acetabulum or a prosthetic acetabular cup, the femoral head component having (i) a distal opening, (ii) a tapered bore extending inwardly from the distal opening to define an aperture sized to receive a proximal end of the neck of the stem component, and (iii) an annular slot defined in the tapered bore, and
- a compressible seal is positioned in the annular slot of the femoral head component,
- wherein (i) the femoral head component is secured to the stem component via a taper lock formed between the tapered bore of the femoral head component and the tapered trunnion of the stem component, and (ii) the compressible seal engages the tapered trunnion of the stem component to prevent fluid from advancing toward a proximal end of the aperture.
1 more element
An orthopaedic prosthetic hip assembly, comprising:
- a stem component configured to be received in a proximal end of a patient's surgically-prepared femur, the stem component comprising (i) a neck including a tapered trunnion and an annular flange and (ii) an elongated body extending distally from the neck, and
- a femoral head component configured to engage a surgically-prepared acetabulum or a prosthetic acetabular cup, the femoral head component having a distal opening and an inner bore extending inwardly from the distal opening, the inner bore including a first section that defines an annular slot and a tapered second section that defines an aperture extending inwardly from the annular slot,
- a compressible seal configured to be received in the annular slot of the femoral head component,
- wherein (i) the femoral head component is configured to be secured to the stem component via a taper lock formed between the tapered second section of the inner bore of the femoral head component and the tapered trunnion of the stem component, and (ii) the flange of the stem component is configured to engage the compressible seal to prevent fluid from advancing into the aperture when the femoral head component is secured to the stem component.
1 more element
Dependencies are inferred from the claim text.