US Patent No: 7,618,447
Number of patents in Portfolio can not be more than 2000
Artificial valve prosthesis with improved flow dynamics
Stats
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Nov 17, 2009
Issued date -
Aug 30, 2004
filing date -
10/828,716
serial no -
In Force
status
Importance
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Abstract
An expandable venous valve having a support structure that configured to enlarge the area adjacent to the valve structure such that the flow patterns of retrograde flow are modified in a way that facilitates the flushing of the pockets at the base of the valve area to prevent stagnation of bodily fluid, which in the venous system, can lead to thrombus formation. The enlarged pocket areas can be created by forming an artificial sinus adjacent the valve structure in an unsupported section of vessel wall between two support frame section or the support frame can comprise an expanded-diameter intermediate or proximal section that forms an artificial sinus adjacent the valve structure. In another group of embodiments, the attachment pathway between opposing leaflets and the support frame and/or vessel wall comprises a proximal portion that places the leaflets in extended contact with one another and a distal portion forms a large angle with respect to the adjacent walls such that a large pocket is created at the base of the leaflets. In one embodiment, the attachment pathway extends distally along a pair of substantially parallel longitudinal attachment struts to create an extended leaflet contact area, then angles circumferentially and distally from the former along distal attachment struts to define the bottom edge of the leaflets.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,879,382 Endovascular support device and method | 52 | 1997 | |
| 5,957,949 Percutaneous placement valve stent | 368 | 1997 | |
| 7,524,331 Catheter delivered valve having a barrier to provide an enhanced seal | 7 | 2006 | |
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| 7,128,759 Implantable medical device with constrained expansion | 21 | 2004 | |
| 7,544,207 Medical device with bioactive agent | 6 | 2005 | |
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| 7,351,256 Frame based unidirectional flow prosthetic implant | 21 | 2003 | |
| 7,347,869 Implantable valvular prosthesis | 11 | 2003 | |
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| 5,411,552 Valve prothesis for implantation in the body and a catheter for implanting such valve prothesis | 484 | 1994 | |
| 5,840,081 System and method for implanting cardiac valves | 353 | 1997 | |
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| 7,044,966 Minimally invasive valve replacement system | 77 | 2003 | |
| 7,101,396 Minimally invasive valve replacement system | 56 | 2003 | |
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| 7,381,219 Low profile heart valve and delivery system | 29 | 2003 | |
| 7,445,631 Methods and apparatus for endovascularly replacing a patient's heart valve | 27 | 2004 | |
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| 6,287,334 Device for regulating the flow of blood through the blood system | 127 | 1997 | |
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| 7,195,641 Valvular prostheses having metal or pseudometallic construction and methods of manufacture | 102 | 2002 | |
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| 7,147,661 Radially expandable stent | 22 | 2001 | |
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| 7,354,455 Medical stent with a valve and related methods of manufacturing | 9 | 2004 | |
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| 5,733,325 Non-migrating vascular prosthesis and minimally invasive placement system | 235 | 1996 | |
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| 5,709,707 Self-centering umbrella-type septal closure device | 190 | 1996 | |
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| 5,907,893 Methods for the manufacture of radially expansible stents | 215 | 1997 | |
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| 7,452,371 Implantable vascular device | 38 | 2001 | |
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| 6,494,909 Endovascular valve | 154 | 2000 | |
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| 5,713,953 Cardiac valve prosthesis particularly for replacement of the aortic valve | 165 | 1996 | |
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| 7,377,938 Prosthetic cardiac value and method for making same | 21 | 2004 | |
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| 5,855,601 Artificial heart valve and method and device for implanting the same | 506 | 1996 | |
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| 6,280,467 Delivery system for deployment and endovascular assembly of a multi-stage stented graft | 69 | 1999 | |
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| 5,607,465 Percutaneous implantable valve for the use in blood vessels | 72 | 1994 | |
| 5,545,215 External sigmoid valve complex frame and valved conduit supported by the same | 43 | 1994 | |
| 2005/0059,923 Fenestration with intrinsic means of selective closure incorporated to a tubular body and used in interventional cardiovascular procedures | 10 | 2003 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 17, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 17, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 17, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |