Stent for the positioning and anchoring of a valvular prosthesis
First Claim
1. An expandable stent for treating a native heart valve having a plurality of native valve leaflets, comprising:
- a plurality of positioning arches configured to be positioned within a plurality of pockets of a native valve on a first side of the plurality of native valve leaflets, a plurality of retaining arches configured to support a valve prosthesis on a second side of the plurality of native valve leaflets such that the plurality of native valve leaflets are positioned radially inward of at least a portion of the plurality of positioning arches and radially outward of at least a portion of the plurality of retaining arches when the expandable stent is implanted, and a plurality of auxiliary arches, each auxiliary arch circumferentially interspaced between two adjacent retaining arches;
wherein each retaining arch is associated with a corresponding positioning arch and has a distal, open end portion axially aligned, along a longitudinal direction of the expandable stent, with and joined to a distal, open end portion of the corresponding positioning arch;
wherein each positioning arch, each retaining arch, and each auxiliary arch has a closed proximal end forming an apex; and
wherein the valve prosthesis is attached to the plurality of retaining arches such that at least a portion of the valve prosthesis extends from the plurality of retaining arches transversely across an interior of the expandable stent.
7 Assignments
0 Petitions
Accused Products
Abstract
An expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency for reducing longitudinal displacement of a valvular prosthesis relative a stent when implanted. In one embodiment, the stent may comprise at least one fastening portion by which the valvular prosthesis is connectable to the stent. In another embodiment, the stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch via a first connecting land. In another embodiment, the stent may comprise at least one auxiliary arch which connects the respective arms of the at least one retaining arch connected to the at least one positioning arch.
277 Citations
28 Claims
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1. An expandable stent for treating a native heart valve having a plurality of native valve leaflets, comprising:
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a plurality of positioning arches configured to be positioned within a plurality of pockets of a native valve on a first side of the plurality of native valve leaflets, a plurality of retaining arches configured to support a valve prosthesis on a second side of the plurality of native valve leaflets such that the plurality of native valve leaflets are positioned radially inward of at least a portion of the plurality of positioning arches and radially outward of at least a portion of the plurality of retaining arches when the expandable stent is implanted, and a plurality of auxiliary arches, each auxiliary arch circumferentially interspaced between two adjacent retaining arches; wherein each retaining arch is associated with a corresponding positioning arch and has a distal, open end portion axially aligned, along a longitudinal direction of the expandable stent, with and joined to a distal, open end portion of the corresponding positioning arch; wherein each positioning arch, each retaining arch, and each auxiliary arch has a closed proximal end forming an apex; and wherein the valve prosthesis is attached to the plurality of retaining arches such that at least a portion of the valve prosthesis extends from the plurality of retaining arches transversely across an interior of the expandable stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An expandable stent for supporting a valvular prosthesis, the stent comprising:
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a plurality of positioning arches configured to be positioned within a plurality of pockets of a native valve on a radially-outward side of a plurality of native valve leaflets of the native valve; a plurality of retaining arches configured to support the valvular prosthesis on a radially-inward side of the plurality of native valve leaflets, at least one of the retaining arches comprising at least one fastening portion including a plurality of holes; and a plurality of auxiliary arches, each auxiliary arch circumferentially interspaced between two adjacent retaining arches; wherein each positioning arch includes a pair of arms connected to one another forming a distal open end and a proximal closed end, each arm connected at a distal end thereof to a respective connecting strut, such that each positioning arch defines a single apex between two adjacent connecting struts; wherein each retaining arch includes a pair of arms connected to one another forming a distal open end and a proximal closed end, each arm connected at a distal end thereof to a respective connecting strut, such that each retaining arch defines a single apex between two adjacent connecting struts; and wherein the valvular prosthesis is attached to the plurality of retaining arches such that at least a portion of the valvular prosthesis extends from the plurality of retaining arches transversely across an interior of the expandable stent. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A stent configured to transition from a collapsed configuration when being introduced into a patient'"'"'s body to an expanded configuration when implanted, comprising:
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three positioning arches configured to be positioned within respective pockets of a native valve on a radially-outward side of a plurality of native valve leaflets of the native valve when the stent is in the expanded configuration; three retaining arches, each retaining arch substantially circumferentially aligned with, and radially offset from, a corresponding positioning arch, the retaining arches configured to be positioned on a radially-inward side of the plurality of native valve leaflets, wherein at least one of the retaining arches includes at least one fastening portion comprising a plurality of holes formed in an arm of the at least one of the retaining arches; and a plurality of auxiliary arches, each auxiliary arch interspaced between two adjacent retaining arches.
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Specification