Multi-component designs for heart valve retrieval device, sealing structures and stent assembly
First Claim
1. A prosthetic mitral valve comprising:
- an outer stent having an atrium end;
a circumferentially continuous tissue collar for atrial sealing, supported by a first end of said outer stent;
an inner stent having a diameter smaller than a diameter of said outer stent and being disposed in said outer stent such that a gap is defined between said outer stent and said inner stent, said tissue collar being coupled to a first end of said inner stent such that said tissue collar extends across the gap from said outer stent to said inner stent to limit flow through the gap;
a leaflet apparatus disposed in said inner stent;
a plurality of wire tethers each having a first end coupled to a ventricle end of said outer stent and extending therefrom, each of said plurality of wire tethers having a second end;
a junction nut coupled to said second ends of said plurality of wire tethers; and
an anchoring tether coupled to and extending from said junction nut.
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Accused Products
Abstract
This invention relates to the design and function of a device which allows for retrieval of a previously implanted valve prosthesis from a beating heart without extracorporeal circulation using a transcatheter retrieval system, including a guide component to facilitate the compression of the valve and retraction into a retrieval catheter, as well as an improved prosthetic transcatheter heart valve having one or more of: a series of radially extending tines having a loop terminus to improve sealing a deployed prosthetic mitral valve against hemodynamic leaking, a pre-compressible stent-in-stent design, or an articulating cuff attached to a covered stent-valve and a commissural sealing skirt structure attached to the underside of the articulating cuff.
778 Citations
19 Claims
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1. A prosthetic mitral valve comprising:
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an outer stent having an atrium end; a circumferentially continuous tissue collar for atrial sealing, supported by a first end of said outer stent; an inner stent having a diameter smaller than a diameter of said outer stent and being disposed in said outer stent such that a gap is defined between said outer stent and said inner stent, said tissue collar being coupled to a first end of said inner stent such that said tissue collar extends across the gap from said outer stent to said inner stent to limit flow through the gap; a leaflet apparatus disposed in said inner stent; a plurality of wire tethers each having a first end coupled to a ventricle end of said outer stent and extending therefrom, each of said plurality of wire tethers having a second end; a junction nut coupled to said second ends of said plurality of wire tethers; and an anchoring tether coupled to and extending from said junction nut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A prosthetic mitral valve comprising:
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an outer tubular stent having a distal end and a proximal end; a circumferentially continuous tissue collar for atrial sealing, supported by an end of said outer tubular stent; an inner tubular stent having a diameter smaller than a diameter of said outer tubular stent and being disposed in said outer tubular stent such that a gap is defined between said outer tubular stent and said inner stent, said tissue collar being coupled to a first end of said inner stent such that said tissue collar extends across the gap from said outer tubular stent to said inner stent to limit flow through the gap; a plurality of wire tethers each having a first end coupled to the proximal end of said outer tubular stent and extending therefrom, each of said plurality of wire tethers having a second end; a junction nut coupled to said second ends of said plurality of wire tethers; an anchoring tether coupled to and extending from said junction nut; and a leaflet apparatus disposed in said inner tubular stent. - View Dependent Claims (16, 17, 18, 19)
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Specification