Fluid flow prosthetic device
First Claim
Patent Images
1. A prosthetic device, comprising:
- a valve-orifice attachment member at an upstream end of said prosthetic device, said valve-orifice attachment member configured for attachment to a native valve site of a patient;
a diverging blood flow pathway, comprising a pathway fluid inlet coupled to said valve-orifice attachment member,said pathway configured to flex between an open position thereof and a closed position thereof in response to a cardiac cycle of said patient,said diverging blood flow pathway defining a single blood flow field that extends downstream from said pathway fluid inlet,said pathway fluid inlet having at its narrowest cross-section a first cross-sectional area for blood flow therethrough,said pathway comprising an outlet having a second cross-sectional area at a downstream end of said prosthetic device; and
a pathway support configured for attachment to said pathway, and that is operative, when attached to said pathway, generally to maintain a diverging configuration of said diverging blood flow pathway,wherein, regardless of whether said pathway support is attached to said pathway, said second cross-sectional area is greater than said first cross-sectional area when said pathway is in said open position thereof.
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Abstract
A prosthetic device including a valve-orifice attachment member attachable to a valve in a blood vessel and including a fluid inlet, and a diverging member that extends from the fluid inlet, the diverging member including a proximal end near the fluid inlet and a distal end distanced from the proximal end, wherein a distal portion of the diverging member has a larger cross-sectional area for fluid flow therethrough than a proximal portion thereof. The diverging member may have a diverging taper that causes fluid to flow therethrough with pressure recovery at the distal end thereof.
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Citations
16 Claims
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1. A prosthetic device, comprising:
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a valve-orifice attachment member at an upstream end of said prosthetic device, said valve-orifice attachment member configured for attachment to a native valve site of a patient; a diverging blood flow pathway, comprising a pathway fluid inlet coupled to said valve-orifice attachment member, said pathway configured to flex between an open position thereof and a closed position thereof in response to a cardiac cycle of said patient, said diverging blood flow pathway defining a single blood flow field that extends downstream from said pathway fluid inlet, said pathway fluid inlet having at its narrowest cross-section a first cross-sectional area for blood flow therethrough, said pathway comprising an outlet having a second cross-sectional area at a downstream end of said prosthetic device; and a pathway support configured for attachment to said pathway, and that is operative, when attached to said pathway, generally to maintain a diverging configuration of said diverging blood flow pathway, wherein, regardless of whether said pathway support is attached to said pathway, said second cross-sectional area is greater than said first cross-sectional area when said pathway is in said open position thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification