Vascular device with valve for approximating vessel wall
First Claim
1. A vascular device comprising a plurality of vessel engaging members and a valve connected to the vascular device, the device movable from a collapsed insertion position having a first diameter to a second expanded position having a second diameter larger than the first diameter, the plurality of vessel engaging members extending outwardly from the device for securely engaging the internal wall of a vessel upon expansion of the device to the second expanded position, the vessel engaging members pulling the internal wall of the vessel radially inwardly upon movement of the device from the second expanded position toward a first expanded position having a third diameter, the third diameter being greater than the first diameter and less than the second diameter, and in the first expanded position the valve movable between an open position to allow blood flow therethrough to a closed position to prevent blood flow wherein the device is composed of shape memory material and the first expanded position substantially corresponds to the memorized position of the device.
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Accused Products
Abstract
A vascular device comprising a plurality of vessel engaging members and a valve. The device is movable from a collapsed insertion position having a first diameter to a second expanded position having a second diameter larger than the first diameter. The plurality of vessel engaging members extend outwardly from the device for securely engaging the internal wall of a vessel upon expansion of the device to the second expanded position, wherein the vessel engaging members pull the internal wall of the vessel radially inwardly upon movement of the device from the second expanded position toward a first expanded position having a third diameter greater than the first diameter and less than the second diameter. In the first expanded position the valve is movable between an open position to allow blood flow therethrough to a closed position to prevent blood flow.
221 Citations
20 Claims
- 1. A vascular device comprising a plurality of vessel engaging members and a valve connected to the vascular device, the device movable from a collapsed insertion position having a first diameter to a second expanded position having a second diameter larger than the first diameter, the plurality of vessel engaging members extending outwardly from the device for securely engaging the internal wall of a vessel upon expansion of the device to the second expanded position, the vessel engaging members pulling the internal wall of the vessel radially inwardly upon movement of the device from the second expanded position toward a first expanded position having a third diameter, the third diameter being greater than the first diameter and less than the second diameter, and in the first expanded position the valve movable between an open position to allow blood flow therethrough to a closed position to prevent blood flow wherein the device is composed of shape memory material and the first expanded position substantially corresponds to the memorized position of the device.
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13. A vascular system comprising:
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a balloon catheter having an elongated shaft and an expandable balloon; a vascular device mounted over the expandable balloon having a first expanded position and a second expanded position, the vascular device expandable to the second expanded position to cause engagement of the vessel walls and returnable substantially to the first position to bring the walls radially inwardly as the walls are pulled inwardly by the vascular device; and a valve connected to the vascular device and movable between a closed position to prevent blood flow and an open position to allow blood flow therethrough wherein the vascular device comprises shape memory material and is expandable to a first memorized condition. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification