US Patent No: 6,270,526
Number of patents in Portfolio can not be more than 2000
Replacement semilunar heart valves using flexible tubes
Stats
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Aug 7, 2001
Issued date -
Mar 27, 2000
filing date -
09/536,229
serial no -
In Force
status
Importance
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Abstract
A method is disclosed for using tubular material to replace a semilunar heart valve (i.e., an aortic or pulmonary valve). To create such a replacement valve, the native valve cusps are removed from inside an aorta or pulmonary artery, and the inlet end of a tubular segment is sutured to the valve annulus. The outlet (distal) end of the tube is either "tacked" at three points distally, or sutured longitudinally along three lines; either method will allow the flaps of tissue between the suture lines to function as movable cusps. This approach generates flow patterns that reduce turbulence and closely duplicate the flow patterns of native semilunar valves. An article of manufacture is also disclosed, comprising a sterile biocompatible synthetic material which has been manufactured in tubular form, by methods such as extrusion or coating a cylindrical molding device, to avoid a need for a suture line or other seam to convert a flat sheet of material into a tubular shape. The synthetic tube is packaged within a sealed watertight enclosure that maintains sterility of the tube.
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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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| 4,211,325 Heart valve holder | 95 | 1979 | |
| 5,163,955 Rapid assembly, concentric mating stent, tissue heart valve with enhanced clamping and tissue alignment | 154 | 1991 | |
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| 5,344,442 Cardiac valve | 101 | 1992 | |
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| 4,863,016 Packaging for a sterilizable calibratable medical device | 78 | 1988 | |
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| 4,512,471 Storage unit | 83 | 1984 | |
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| 4,470,157 Tricuspid prosthetic tissue heart valve | 169 | 1983 | |
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| 5,385,229 Container for the packaging of a hollow endoprosthesis | 46 | 1993 | |
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| 5,031,762 Three envelope package for sterile specimens | 52 | 1989 | |
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| 4,545,783 Rigid medical solution container | 58 | 1983 | |
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| 4,601,718 Vascular graft and blood supply method | 60 | 1984 | |
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| 5,500,015 Cardiac valve | 66 | 1994 | |
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| 5,460,962 Peracetic acid sterilization of collagen or collagenous tissue | 115 | 1994 | |
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| 4,750,619 Package with tray for securing and presenting a sterile prosthetic implant element | 89 | 1987 | |
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| 4,838,288 Heart valve and xenograft washing system | 66 | 1988 | |
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| 4,306,318 Tubular organic prosthesis | 171 | 1979 | |
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| 5,607,477 Soft tissue augmentation apparatus | 55 | 1995 | |
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| 4,801,299 Body implants of extracellular matrix and means and methods of making and using such implants | 260 | 1984 | |
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| 4,697,703 Joint prosthesis package | 117 | 1986 | |
| 4,960,424 Method of replacing a defective atrio-ventricular valve with a total atrio-ventricular valve bioprosthesis | 230 | 1988 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 7, 2013 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |