US Patent No: 7,338,499
Number of patents in Portfolio can not be more than 2000
Hip arthroplasty balancing apparatus and method
Stats
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Mar 4, 2008
Issued date -
Sep 13, 2004
filing date -
10/939,789
serial no -
In Force
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Abstract
Apparatus and method for interoperatively determining, during a trialing procedure conducted in connection with total hip arthroplasty at an implant site, a femoral neck length required in a femoral component to be engaged with an acetabular component of the prosthetic hip joint to be implanted at the implant site for establishing forces appropriate for proper articular engagement of the femoral component with the acetabular component, by moving a trial femoral head component and a trial femoral stem component relative to one another, while the trial femoral head component is engaged with an acetabular trial, to determine a measured distance corresponding to a trial distance between the trial femoral head component and the trial femoral stem component at which trial distance selected tensile forces are established in soft tissue at the implant site urging the trial femoral head component and the trial femoral stem component toward one another, the selected tensile forces corresponding to the forces appropriate for proper articular engagement of the femoral component with the acetabular component of the prosthetic hip joint, the trial distance corresponding to the required femoral neck length.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,116,338 Apparatus for knee prosthesis | 88 | 1991 | |
| 5,213,112 Tension meter for orthopedic surgery | 67 | 1992 | |
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| 6,193,758 Shoulder prosthesis | 51 | 1998 | |
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| 6,197,065 Method and apparatus for segmental bone replacement | 52 | 1998 | |
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| 5,569,263 Adjustable provisional articulating device | 36 | 1995 | |
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| 5,911,723 Surgical apparatus | 97 | 1997 | |
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| 2006/0155,295 Ligament tensing device with displaceable lug | 1 | 2003 | |
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| 2006/0217,737 System, method and tool for ensuring correct insertion of an artificial hip joint | 6 | 2004 | |
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| 5,540,696 Instrumentation for use in orthopaedic surgery | 145 | 1995 | |
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| 4,566,448 Ligament tensor and distal femoral resector guide | 73 | 1983 | |
| 5,800,554 Endoprosthesis for an artificial hip-joint | 13 | 1997 | |
| 2005/0080,428 Extracapsular surgical procedure for repair of anterior cruciate ligament rupture and surgical referencing instrument therefor | 20 | 2004 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 4, 2015 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 4, 2019 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |