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Percutaneous heart valve devices

a technology of heart valves and percutaneous injection, which is applied in the field of medical devices, can solve the problems of mechanical valves being susceptible to clot formation, long-term wear and tear of devices, and the device cannot be repositioned

Inactive Publication Date: 2005-05-05
COOK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lower extremity venous hypertension in addition to venous insufficiency is a major cause of morbidity in the United States.
The problem with mechanical ball valves is that mechanical valves are susceptible to clot formation.
Additionally, there are problems associated with long-term wear and tear on the device.
Problems associated with some biological valves include the supply of the valves, immunity response, or problems associated with matching the size with the donor.
Finally other problems associated with valve repair include placement problems in which the device cannot be repositioned once it is ejected from the placement catheter, leakage that occurs, around the valve, and emboli formation.

Method used

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  • Percutaneous heart valve devices
  • Percutaneous heart valve devices
  • Percutaneous heart valve devices

Examples

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Embodiment Construction

[0018] With reference to FIG. 15, shown is one embodiment of the present invention. The invention includes a frame such as a wire stent that has a lumen extending therethrough. Near one end of the stent is the valve assembly comprising some leaflets or cusps. A valve opening is generally located between the leaflets through which fluid flows. Although shown as a two leaflet valve, equally the invention can comprise, in any embodiment described herein, at least one leaflet such as two, three or four leaflets.

[0019] With respect to FIGS. 1A, 1B, and 1C, a frame is partially shown. The frame can comprise a stent 20. Choices of stent include a self expanding stent or a non-self expanding stent. In one embodiment of the present invention stent 20 is a self expanding stent such as the Gianturco stent available from Cook Inc. of Bloomington, Ind. as described in U.S. Pat. No. 4,580,568, the entire disclosure of which is expressly incorporated by reference herein. Such stent can be any len...

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Abstract

The invention includes a medical device and more specifically relates to a valve found generally within a frame. In a preferred device, the frame preferably comprises a self-expanding stent frame, and the valve has at least one expandable and contractible pocket member within the stent frame for resisting and permitting fluid flow, respectively.

Description

REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation of U.S. patent application Ser. No. 10 / 457,148, filed on Jun. 9, 2003, pending, which is a continuation of U.S. patent application Ser. No. 10 / 182,970, filed on filed Jan. 31, 2001, abandoned, which is an National Stage of PCT / US / 01 / 03095, filed on Jan. 31, 2001 and published in English, which claims the benefit of U.S. Provisional Patent Application No. 60 / 179,195, filed on Jan. 31, 2000.BACKGROUND OF THE INVENTION [0002] 1. Technical Field of the Invention [0003] The invention includes a medical device and more specifically to a valve found generally within a frame. In preferred devices the frame is comprised of a radially expandable stent which can be delivered through a delivery device such as a catheter. [0004] 2. Background of the Invention [0005] Lower extremity venous hypertension in addition to venous insufficiency is a major cause of morbidity in the United States. Symptoms of venous disease include lower extr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/84A61F2/24A61F2/90A61L27/00
CPCA61F2/2418A61F2/2475A61F2220/0075A61F2220/005A61F2220/0016
Inventor OSSE, FRANCISCO JOSETHORPE, PATRICIA E.
Owner COOK INC
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