Articulated commissure valve stents and methods
First Claim
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1. A biocompatible articulated support structure, comprising a tubular support body with a proximal opening, a distal opening, and a lumen and a longitudinal axis between the proximal and distal openings;
- wherein the tubular support body comprises a plurality of discrete struts coupled by a plurality of rotatable hinge joints, each rotatable hinge joint comprising an axis of rotation with a radial orientation;
wherein the plurality of rotatable hinge joints comprise;
a set of proximal rotatable hinge joints configured to reside in a proximal plane with the proximal opening;
a set of distal rotatable hinge joints configured to reside in a distal plane with the distal opening;
a first set of middle rotatable hinge joints, located between the proximal plane and the distal plane; and
at least one commissural point hinge joint distal to the distal plane;
wherein the plurality of discrete struts and the rotatable hinge joints therebetween intrinsically provide a self-expansion force; and
wherein the plurality of discrete struts comprise a plurality of inner struts and a plurality of outer struts.
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Abstract
A support structure includes strut members interconnected by rotatable joints to form a series of linked scissor mechanisms. The structure can be remotely actuated to compress or expand its shape by adjusting the scissor joints within a range of motion. In particular, the support structure can be repositioned within the body lumen or retrieved from the lumen. The support structure can be employed to introduce and support a prosthetic valve within a body lumen.
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Citations
13 Claims
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1. A biocompatible articulated support structure, comprising a tubular support body with a proximal opening, a distal opening, and a lumen and a longitudinal axis between the proximal and distal openings;
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wherein the tubular support body comprises a plurality of discrete struts coupled by a plurality of rotatable hinge joints, each rotatable hinge joint comprising an axis of rotation with a radial orientation; wherein the plurality of rotatable hinge joints comprise; a set of proximal rotatable hinge joints configured to reside in a proximal plane with the proximal opening; a set of distal rotatable hinge joints configured to reside in a distal plane with the distal opening; a first set of middle rotatable hinge joints, located between the proximal plane and the distal plane; and at least one commissural point hinge joint distal to the distal plane; wherein the plurality of discrete struts and the rotatable hinge joints therebetween intrinsically provide a self-expansion force; and wherein the plurality of discrete struts comprise a plurality of inner struts and a plurality of outer struts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification