Devices, Systems, and Methods for a Collapsible and Expandable Replacement Heart Valve
Disclosed herein are systems and methods for a replacement heart-valve delivery system, comprising a replacement heart valve and a delivery component. The delivery component enables control of the replacement heart valve such that it can control collapsing and expanding the heart valve. Due to the nature of the flexible wire frame making up the heart valve, as well as its size, the delivery component allow for flexibility in the delivery catheter. The claimed invention thus allows for less traumatic delivery, more precise delivery, and a greater number of options on how to deliver.
1 . A replacement heart-valve delivery system, comprising:
a replacement heart valve, comprising a tubular braided frame, a leaflet assembly, and one or more commissure tabs;
wherein the tubular braided frame comprises an inflow end, an outflow end, and one or more looping structures on one or both of the inflow end and the outflow end, and
wherein the leaflet assembly comprises at least one valve leaflet, wherein the at least one leaflet comprises an inflow end, an outflow end, and one or more commissure tabs extending horizontally away from the inflow end and connecting to the inflow end of the tubular braided frame;
a delivery component, comprising one or more suture lines and one or more bushings connected to a channel retained in a threaded rod;
wherein the one or more suture lines goes through the one or more looping structures, through the one or more bushings, through the channel in the threaded rod, and connects to a controlling mechanism.
2 . The system of claim 1 , wherein the tubular braided frame is a braid of one or more wires, wherein the braid of the one or more wires is either a zig-zag braid or an over-under braid, and wherein the one or more wires consists of one of: nitinol wire, stainless steel, cobalt chrome, and nylon.
3 . The system of claim 2 , wherein the controlling mechanism comprises a linking element for connecting the one or more suture lines to a knob.
4 . The system of claim 3 , wherein the knob controls the one or more suture lines and movement of the one or more looping structures.
5 . The system of claim 2 , wherein the one or more suture lines alternate in direction starting at a first bushing of the one or more bushings, through the one or more looping structures, and ending at a second bushing of the one or more bushings, such that the one or more suture lines creates tension with a vector extending through a centerline of the delivery component.
6 . The system of claim 2 , further comprising a retrieval system, wherein the retrieval system comprises a leash incorporated into the one or more looping structures.
7 . The system of claim 2 , wherein the leaflet assembly comprises two or more valve leaflets, wherein the one or more commissure tabs of the two or more leaflets are connected and wherein the outflow end of the two or more valve leaflets are connected to form a y-shape.
8 . The system of claim 7 , wherein the connected one or more commissure tabs and the connected outflow end of the two or more valve leaflets are connected by one or more of: sewing, fusing, and stitching
9 . A method for percutaneous deployment and placement of a replacement heart-valve delivery system, comprising:
the replacement heart-valve delivery system comprising a replacement heart valve and a delivery component;
wherein the replacement heart valve comprises a tubular braided frame, a leaflet assembly, and one or more commissure tabs;
wherein the tubular braided frame comprises an inflow end, an outflow end, and one or more looping structures on one or both of the inflow end and the outflow end; and
wherein the leaflet assembly comprises at least one valve leaflet, wherein the at least one leaflet comprises an inflow end, an outflow end, and one or more commissure tabs extending horizontally away from the inflow end and connecting to the inflow end of the tubular braided frame;
wherein the delivery component comprises one or more suture lines, a release wire, and one or more bushings connected to a channel retained in a threaded rod;
wherein the one or more suture lines goes through the one or more looping structures of the replacement heart valve, through the one or more bushings, through the channel in the threaded rod, connects to the release wire, and connects to a controlling mechanism, wherein the controlling mechanism comprises a linking element for connecting the one or more suture lines to a knob;
wherein pulling the one or more suture lines with the knob controls the expansion of the one or more looping structures and the expansion of the replacement heart valve, and wherein pulling the release wire releases the suture lines and releases the replacement heart valve;
percutaneously placing the replacement heart-valve delivery system into one of a vein or an artery;
delivering the replacement heart-valve delivery system to a native heart valve;
placing the replacement heart-valve delivery system in the position of the native heart valve;
pulling the one or more suture lines to expand the replacement heart valve; and
pulling the release wire to release the replacement heart valve.
10 . The method of claim 9 , wherein the vein is a femoral vein and wherein delivering the replacement heart-valve delivery system to a native heart valve comprises delivering the replacement heart-valve delivery system through the vena cava.
11 . The method of claim 9 , wherein the vein is a femoral vein and wherein delivering the replacement heart-valve delivery system to a native heart valve comprises delivering the replacement heart-valve delivery system through the vena cava and through a puncture in the atrial septum.
12 . The method of claim 9 , wherein the tubular braided frame is a braid of one or more wires, wherein the braid of the one or more wires is either a zig-zag braid or an over-under braid, and wherein the one or more wires consists of one of: nitinol wire, stainless steel, cobalt chrome, and nylon.
13 . The method of claim 9 , wherein the one or more suture lines alternate in direction starting at a first bushing of the one or more bushings, through the one or more looping structures, and ending at a second bushing of the one or more bushings;
The method further comprising, controlling the one or more suture lines with the knob to create tension with a vector extending through a centerline of the delivery component.
14 . The method of claim 9 , further comprising a retrieval system, wherein the retrieval system comprises a leash incorporated into the one or more looping structures.
15 . The method of claim 9 , wherein the leaflet assembly comprises two or more valve leaflets, wherein the one or more commissure tabs of the two or more leaflets are connected and wherein the outflow end of the two or more valve leaflets are connected to form a y-shape.
16 . The method of claim 15 , wherein the connected one or more commissure tabs and the connected outflow end of the two or more valve leaflets are connected by one or more of: sewing, fusing, and stitching.
17 . The method of claim 9 , wherein percutaneously placing the replacement heart-valve delivery system into one of a vein or an artery consists of inserting the replacement heart-valve delivery system into one of the vein or the artery over a guidewire.
18 . The method of claim 9 , wherein the delivery component further comprises an outer sheath and the placing of the replacement heart-valve delivery system in the position of the native heart valve further comprises releasing the outer sheath to allow the replacement heart valve to expand.