REPLACEMENT MITRAL VALVE, DELIVERY SYSTEM FOR REPLACEMENT MITRAL VALVE AND METHODS OF USE
First Claim
Patent Images
1. A transseptal delivery system for replacement mitral valve implantation, the delivery system comprising:
- a nose cone shaft having a proximal end and a distal end and a lumen extending therethrough;
a nose cone provided on the distal end of the nose cone shaft;
an inner retention shaft slideably positioned over the nose cone shaft, the inner retention shaft having a proximal end and a distal end;
an inner retention ring provided on the distal end of the inner retention shaft, the inner retention ring configured to receive struts at a proximal portion of a replacement mitral valve prosthesis;
a mid shaft slideably positioned over the inner retention shaft, the mid shaft having a proximal end and a distal end;
an outer retention ring provided on the distal end of the mid shaft, the outer retention ring configured to be positioned over the inner retention ring to hold the proximal portion of the replacement mitral valve prosthesis within the inner retention ring; and
an outer sheath assembly slideably positioned over the mid shaft and over the outer retention ring, the outer sheath assembly configured to radially restrain a distal portion of the replacement mitral valve prosthesis when the proximal portion of the replacement mitral valve prosthesis is held by the outer retention ring within the inner retention ring.
1 Assignment
0 Petitions
Accused Products
Abstract
Devices, systems and methods are described herein a prosthesis for implantation within a lumen or body cavity and delivery systems for delivering the prosthesis to a location for implantation. A delivery system can include a plurality of components, including a flexible nose cone, multi-layer sheath, and pre-compressed shaft, which can be moveable relative to each other.
-
Citations
20 Claims
-
1. A transseptal delivery system for replacement mitral valve implantation, the delivery system comprising:
-
a nose cone shaft having a proximal end and a distal end and a lumen extending therethrough; a nose cone provided on the distal end of the nose cone shaft; an inner retention shaft slideably positioned over the nose cone shaft, the inner retention shaft having a proximal end and a distal end; an inner retention ring provided on the distal end of the inner retention shaft, the inner retention ring configured to receive struts at a proximal portion of a replacement mitral valve prosthesis; a mid shaft slideably positioned over the inner retention shaft, the mid shaft having a proximal end and a distal end; an outer retention ring provided on the distal end of the mid shaft, the outer retention ring configured to be positioned over the inner retention ring to hold the proximal portion of the replacement mitral valve prosthesis within the inner retention ring; and an outer sheath assembly slideably positioned over the mid shaft and over the outer retention ring, the outer sheath assembly configured to radially restrain a distal portion of the replacement mitral valve prosthesis when the proximal portion of the replacement mitral valve prosthesis is held by the outer retention ring within the inner retention ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A flexible delivery system for replacement mitral valve implantation, the delivery system comprising:
an outer sheath comprising a distal segment configured to cover a replacement mitral valve, wherein the distal segment is formed from an inner polymer layer and an outer polymer layer, and wherein the distal segment further comprises; a proximal section comprising a hypotube sandwiched between the inner and outer polymer layers; and a distal section comprising an intermediate polymer layer sandwiched between the inner and outer polymer layers. - View Dependent Claims (17, 18, 19)
-
20. A replacement mitral valve prosthesis, comprising:
-
an expandable frame having a proximal end and a distal end and a longitudinal axis extending therebetween, wherein the expandable frame in an expanded configuration comprises; a distal portion comprising; at least one row of diamond-shaped cells, wherein the diamond-shaped cells are configured to cause the distal portion to radially expand and longitudinally foreshorten when the expandable frame is expanded; and a plurality of distal anchors each extending distally from a distalmost corner of a diamond-shaped cell, the distal anchors curving to extend proximally at ends of each of the plurality of distal anchors; and a proximal portion comprising; at least one row of hexagonal-shaped cells, each of the hexagonal-shaped cells formed from a proximal row of undulating struts, a pair of vertical struts attached to two distalmost valleys of the proximal row of undulating struts, and two proximalmost struts forming the diamond-shaped cells, wherein the at least one row of hexagonal-shaped cells is configured to be circumferentially expandable when the expandable frame is expanded; a plurality of proximal anchors extending from a proximalmost corner of the hexagonal-shaped cells, each of the plurality of proximal anchors extending distally and curving radially outwardly away from the hexagonal-shaped cells; and a plurality of locking tabs each extending proximally from the proximalmost ends of the hexagonal-shaped cells, the locking tabs having enlarged proximal ends; wherein the expandable frame is configured to be collapsible to a radially compacted configuration for delivery and expandable to a radially expanded configuration for implantation.
-
Specification