Valve fixation member having engagement arms
First Claim
1. Apparatus comprising a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having semilunar sinuses, the prosthesis comprising:
- a collapsible and expandable valve prosthesis support comprising a support structure having exactly three engagement arms and a longitudinal axis,wherein, upon implantation of the prosthesis, each of the engagement arms is configured to be at least partially disposed within a respective one of the semilunar sinuses, andwherein each of the engagement arms comprises an upwardly concave portion, wherein the upwardly concave portion is shaped so as to curve outwards from the longitudinal axis in a lateral direction when the valve prosthesis support is in an expanded state.
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Accused Products
Abstract
Apparatus is provided including a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having semilunar sinuses, the prosthesis including a valve prosthesis support, which includes a support structure including at least two engagement arms. Upon implantation of the prosthesis, each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses. A shape of at least one of the engagement arms is generally characterized by a function z″(r)>=0, where z is a height of any given point on the at least one engagement arm measured along a longitudinal axis of the prosthesis, and r is a distance from the longitudinal axis to the given point. Other embodiments are also described.
952 Citations
17 Claims
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1. Apparatus comprising a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having semilunar sinuses, the prosthesis comprising:
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a collapsible and expandable valve prosthesis support comprising a support structure having exactly three engagement arms and a longitudinal axis, wherein, upon implantation of the prosthesis, each of the engagement arms is configured to be at least partially disposed within a respective one of the semilunar sinuses, and wherein each of the engagement arms comprises an upwardly concave portion, wherein the upwardly concave portion is shaped so as to curve outwards from the longitudinal axis in a lateral direction when the valve prosthesis support is in an expanded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus comprising a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having semilunar sinuses, the prosthesis comprising:
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a collapsible and expandable valve prosthesis support comprising a support structure comprising at least two engagement arms, wherein the valve prosthesis support includes a downstream section and an upstream section, wherein the engagement arms extend from the downstream section of the valve prosthesis support towards the upstream section of the valve prosthesis support, wherein, upon implantation of the prosthesis, each of the engagement arms is configured to be at least partially disposed within a respective one of the semilunar sinuses, and wherein each of the engagement arms comprises an upwardly concave portion, wherein the upwardly concave portion is shaped so as to curve outwards from the longitudinal axis in a lateral direction when the valve prosthesis support is in an expanded state.
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Specification