Devices, systems and methods for improving recapture of prosthetic heart valve device with stent frame having valve support with inwardly stent cells
Inventors
Berndt, Jonathan • Khouengboua, Sounthara • Kumar, Saravana
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-11992403-B2
Publication Date
2024-05-28
Expiration Date
Abstract
A collapsible and expandable prosthetic mitral valve stent is provided with improved recapture into a distal lumen of a delivery sheath. Various embodiments comprise a valve support within the interior of a stent frame and defining a flow channel therethrough, wherein the top or upstream of the valve support comprises a row, or a plurality, of stent cells that are bent radially inward at least partially over the flow channel. Some embodiments may comprise a recapture assist mechanism, such as an open paddle, attached to one or more of the inwardly bent stent cells and adapted to receive and/or engage a wire to aid in positioning, expansion, recapture and/or implanting the device in a patient's heart chamber.
Core Innovation
The invention is a prosthetic heart valve device adapted for expansion and implantation into a heart chamber of a patient for supplementation and/or replacement of native valve leaflet functionality. The device includes a collapsible and expandable stent with an outer section that defines an interior, and a valve support operationally connected to the collapsible and expandable stent and extending radially upward into the interior of the outer section.
The inverted valve support defines a blood flow channel between an inflow end and an outflow end. A plurality of prosthetic valve leaflets are disposed within the blood flow channel to allow flow from the inflow end to the outflow end and to prevent flow from the outflow end to the inflow end. The inflow end of the valve support comprises a plurality of top-most stent cells bent radially inwardly over the blood flow channel.
The valve support further comprises stent cells that are not the top-most stent cells, and at least one of the stent cells that are not the top-most stent cells further comprises at least one recapture assist mechanism disposed thereon. Additional described embodiments include delivery and resheathing considerations and structures that support paravalvular leakage (PVL) skirt integration and leaflet spacing relative to native leaflets for supplementation and/or replacement of native mitral valve leaflet functionality.
Claims Coverage
The independent claim contains four inventive features centered on an inverted valve support within a collapsible and expandable stent, together with specific top-most radially inward bent stent cells and recapture assist mechanisms on non-top-most stent cells.
Inverted radially upward-extending valve support defining a blood flow channel
A valve support operationally connected to the collapsible and expandable stent extends radially upward into the interior of the outer section, wherein the valve support is inverted entirely within the interior of the outer section and defines a blood flow channel between an inflow end and an outflow end.
Leaflets configured for inflow-to-outflow flow and preventing reverse flow
A plurality of prosthetic valve leaflets disposed within the blood flow channel configured to allow flow from the inflow end to the outflow end and prevent flow from the outflow end to the inflow end.
Top-most radially inward bent stent cells over the flow channel
The inflow end of the valve support comprises a plurality of top-most stent cells that are bent radially inwardly over the blood flow channel.
Recapture assist mechanism disposed on non-top-most stent cells
The valve support comprises stent cells that are not the top-most stent cells, and at least one of the stent cells that are not the top-most stent cells further comprises at least one recapture assist mechanism disposed thereon.
Overall, the claim coverage focuses on an inverted valve support within a collapsible and expandable stent that defines a blood flow channel lined by prosthetic leaflets configured to permit forward flow and prevent reverse flow, combined with inwardly bent top-most stent cells at the inflow end and recapture assist mechanisms on stent cells other than the top-most cells.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
Interested in licensing this patent?