Expandable stent valve
First Claim
1. A device for implantation at a position of a heart, the device comprising:
- a valve frame defining a lumen, the valve frame having an upstream end and a downstream end;
a plurality of valve leaflets attached to and disposed within the valve frame;
a sewing member surrounding the valve frame at a region between the upstream end and the downstream end, for forming an attachment to tissue at the position of the heart; and
a membrane disposed about the valve frame for obstructing fluid flow between the lumen and an external region surrounding the valve frame,wherein the valve frame is expandable, and a portion of the membrane at a side region of the downstream end of the valve frame comprises an opening that permits fluid flow through the side region.
1 Assignment
0 Petitions
Accused Products
Abstract
An expandable valve (100) and valve frame device that may be implanted within the body, for example, at a position of the heart. The device may be surgically implanted and subsequently expanded at a later time. The device may include an expandable sewing member (160) surrounding the valve frame (130) at a region between upstream and downstream ends of the device, for attaching the device to surrounding tissue. The device may include a membrane (140) for blocking leakage out the side of the valve frame between opposite ends. However, the membrane may include a side opening (170) for guiding fluid flow toward an appropriate anatomical outflow tract. The device may include a hood-like covering attached to a tissue wall, for smoothly receiving and guiding fluid flow along a perpendicular bend. The device may further include a flared opening at a downstream end, providing adequate space for device attachment.
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Citations
15 Claims
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1. A device for implantation at a position of a heart, the device comprising:
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a valve frame defining a lumen, the valve frame having an upstream end and a downstream end; a plurality of valve leaflets attached to and disposed within the valve frame; a sewing member surrounding the valve frame at a region between the upstream end and the downstream end, for forming an attachment to tissue at the position of the heart; and a membrane disposed about the valve frame for obstructing fluid flow between the lumen and an external region surrounding the valve frame, wherein the valve frame is expandable, and a portion of the membrane at a side region of the downstream end of the valve frame comprises an opening that permits fluid flow through the side region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of implanting a device at a position of the heart, the device including a valve frame defining a lumen, the valve frame having an upstream end and a downstream end, a plurality of valve leaflets attached to and disposed within the valve frame, and a membrane disposed about the valve frame for obstructing fluid flow between the lumen and an external region surrounding the valve frame, wherein the valve frame is expandable, and a portion of the membrane at a side region of the downstream end of the valve frame comprises an opening that permits fluid flow through the side region, the method comprising:
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positioning the valve frame at the position of the heart; and attaching a sewing member surrounding the valve frame at a region between the upstream end and the downstream end to tissue at the position of the heart.
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Specification