Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient
First Claim
1. An expandable stent, comprising:
- a plurality of positioning arches, each having an apex projecting toward a proximal end of the stent, the plurality of positioning arches being configured to be positioned within a plurality of pockets of a native heart valve radially outward of a plurality of native heart valve leaflets,a plurality of retaining arms, each having a proximal end, the plurality of retaining arms being configured to be positioned radially inward of the plurality of native heart valve leaflets, anda first annular collar having a distal end connected to a proximal end of at least one of the plurality of retaining arms and a proximal end defining a proximalmost end of the stent,wherein the proximal ends of the plurality of retaining arms are positioned closer to the proximalmost end of the stent than the proximal end of the plurality of positioning arches.
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Accused Products
Abstract
The present invention relates to a stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. 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 web. The stent moreover comprises at least one auxiliary retaining arch which connects the respective arms of the at least one retaining arch connected to the at least one positioning arch.
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Citations
20 Claims
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1. An expandable stent, comprising:
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a plurality of positioning arches, each having an apex projecting toward a proximal end of the stent, the plurality of positioning arches being configured to be positioned within a plurality of pockets of a native heart valve radially outward of a plurality of native heart valve leaflets, a plurality of retaining arms, each having a proximal end, the plurality of retaining arms being configured to be positioned radially inward of the plurality of native heart valve leaflets, and a first annular collar having a distal end connected to a proximal end of at least one of the plurality of retaining arms and a proximal end defining a proximalmost end of the stent, wherein the proximal ends of the plurality of retaining arms are positioned closer to the proximalmost end of the stent than the proximal end of the plurality of positioning arches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An expandable stent, comprising:
- a plurality of positioning arches configured to be positioned within a plurality of pockets of a native heart valve radially outward of a plurality of leaflets of the native valve, a plurality of retaining arches configured to support a heart valve prosthesis, and a first annular collar having a substantially lattice structure,
wherein each retaining arch is associated with a corresponding positioning arch and has a distal end portion axially aligned, along a longitudinal direction of the stent, with and joined to a distal end portion of the corresponding positioning arch, and wherein the heart valve prosthesis is attached to the plurality of retaining arches such that at least part of the prosthetic valve extends from the plurality of retaining arches transversely across an interior of the stent. - View Dependent Claims (11, 12, 13)
- a plurality of positioning arches configured to be positioned within a plurality of pockets of a native heart valve radially outward of a plurality of leaflets of the native valve, a plurality of retaining arches configured to support a heart valve prosthesis, and a first annular collar having a substantially lattice structure,
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14. An expandable stent comprising:
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a plurality of positioning arches configured to be positioned within a plurality of pockets of a native heart valve, each of the plurality of positioning arches having an apex projecting toward a proximal end of the stent; a plurality of retaining arms configured to support a heart valve prosthesis; at least one strut member, interspaced between two adjacent positioning arches, the at least one strut member including a first end connected to at least one of the plurality of positioning arches, a second cantilevered end projecting toward the proximal end of the stent, and a plurality of fastening holes configured to receive a suture; and a collar connected to each of the plurality of retaining arms. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification