Implantable device and delivery system for reshaping a heart valve annulus
First Claim
1. An implant for reducing heart valve regurgitation comprising:
- a frame having upper crowns, lower crowns and struts between the upper and lower crowns, the frame having a tissue engaging configuration having a tissue engaging diameter and an annulus remodeling configuration where the frame has an annulus remodeling diameter that is less than the tissue engaging diameter;
a plurality of anchoring members coupled with the lower crowns of the frame for engaging cardiac tissue proximate the heart valve annulus; and
a plurality of collars coupled with the upper crowns of the frame, wherein when force is applied to the collars, the collars slide along the upper crowns and the struts to move the frame from the tissue engaging configuration towards the annulus remodeling configuration and wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns and the struts.
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Accused Products
Abstract
Systems, devices and methods related to various heart valve implants and for delivery of those heart valve implants are described. The implants may be used to re-size a native valve annulus or to replace a native heart valve. The implants include a re-sizable frame having angled struts. Anchors secure the implant to tissue and collars are used to decrease the angle between the struts and contract the frame. The implant thus expands from a first size inside of a delivery catheter, to a second and larger deployed size inside the heart to engage and anchor with the tissue, and then to a third and contracted size to re-size the annulus and/or provide a secure fit for a replacement heart valve. Various delivery systems including imaging capabilities for precise delivery, positioning and anchoring of the various implants are further described.
397 Citations
25 Claims
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1. An implant for reducing heart valve regurgitation comprising:
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a frame having upper crowns, lower crowns and struts between the upper and lower crowns, the frame having a tissue engaging configuration having a tissue engaging diameter and an annulus remodeling configuration where the frame has an annulus remodeling diameter that is less than the tissue engaging diameter; a plurality of anchoring members coupled with the lower crowns of the frame for engaging cardiac tissue proximate the heart valve annulus; and a plurality of collars coupled with the upper crowns of the frame, wherein when force is applied to the collars, the collars slide along the upper crowns and the struts to move the frame from the tissue engaging configuration towards the annulus remodeling configuration and wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns and the struts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A delivery system for delivering an implant for reducing heart valve regurgitation, the delivery system comprising:
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the implant, wherein the implant comprises; a frame having upper crowns, lower crowns and struts between the upper and lower crowns, the frame having a tissue engaging configuration with a tissue engaging diameter, and an annulus remodeling configuration where the frame has an annulus remodeling diameter less than the tissue engaging diameter; a plurality of anchoring members coupled with the lower crowns of the frame for engaging cardiac tissue proximate the heart valve annulus; and a plurality of collars coupled with the upper crowns of the frame, wherein when force is applied to the collars, the collars slide on the upper crowns and the struts to move the frame from the tissue engaging configuration towards the annulus remodeling configuration and wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns and the struts; a delivery catheter releasably attached to the implant and configured to deliver the implant to a position proximate the heart valve annulus; and an imaging catheter comprising a distal end configured to extend proximate the heart valve annulus and to capture one or more images therein of the position of the implant relative to the heart valve annulus. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method of reducing the size of an enlarged heart valve annulus comprising the steps of:
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delivering an implant in a delivery system to a site above and proximate the enlarged heart valve annulus, the implant having a proximal end and a distal end; releasing the implant from the delivery system to allow the implant to take on a tissue engaging diameter; anchoring the distal end of the implant into cardiac tissue proximate and above the enlarged heart valve annulus; translating a plurality of collars over corresponding upper crowns of the proximal end of the implant to reduce the tissue engaging diameter to an annulus remodeling diameter, thereby reducing the size of the enlarged heart valve annulus, wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns; and disengaging the anchored and reduced diameter implant from the delivery system.
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22. A heart valve replacement implant comprising:
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a replacement valve having a plurality of replacement valve leaflets; a tubular valve housing fixedly attached to the replacement valve leaflets; a cinch frame connected to and circumferentially surrounding the tubular valve housing, the cinch frame having upper crowns, lower crowns and struts between the upper and lower crowns, the cinch frame configurable between a tissue engaging configuration wherein opposing upper crowns are separated by a tissue engaging diameter and an annulus remodeling configuration wherein opposing upper crowns are separated by an annulus remodeling diameter that is less than the tissue engaging diameter; a plurality of anchoring members coupled with the upper crowns of the cinch frame for engaging cardiac tissue proximate the heart valve annulus; and a plurality of collars coupled with the lower crowns of the cinch frame, wherein when force is applied to the collars, the collars slide on the lower crowns and the struts to reconfigure the cinch frame from the tissue engaging configuration towards the annulus remodeling configuration and wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns and the collars. - View Dependent Claims (23)
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24. A heart valve replacement implant comprising:
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a replacement valve having a plurality of replacement valve leaflets; a tubular valve housing fixedly attached to the replacement valve leaflets; a cinch frame connected to and circumferentially surrounding the tubular valve housing, the cinch frame having upper crowns, lower crowns and struts between the upper and lower crowns, the cinch frame configurable between a tissue engaging configuration wherein opposing lower crowns are separated by a tissue engaging diameter and an annulus remodeling configuration wherein opposing lower crowns are separated by an annulus remodeling diameter that is less than the tissue engaging diameter; a plurality of anchoring members coupled with the lower crowns of the cinch frame for engaging cardiac tissue proximate the heart valve annulus; and a plurality of collars coupled with the upper crowns of the cinch frame, wherein when force is applied to the collars, the collars slide on the upper crowns and the struts to reconfigure the cinch frame from the tissue engaging configuration towards the annulus remodeling configuration and wherein each collar includes at least one flex section configured to reduce friction between the collar and the upper crowns and the struts. - View Dependent Claims (25)
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Specification