Patent AU-2020233732-A1 (AU)
Title: Prosthetic heart valve
Inventor: LEVI TAMIR
IPC: A61M29/02
Filed: 2020-09-17
Abstract: PROSTHETIC HEART VALVE 
ABSTRACT 
An assembly comprising: a delivery apparatus comprising a shaft (180) and a balloon 
(182) on the shaft (180); and a prosthetic heart valve (10) mounted on the balloon (182) on the 
shaft (180) in a radially collapsed configuration; wherein the prosthetic heart valve (10) 
comprises: a radially expandable annular frame (12) comprising a cobalt-chromium alloy, 
wherein the frame (12) comprises an inflow end portion defining an inflow end of the frame (12) 
that is configured to receive antegrade blood flow into the prosthetic heart valve (10) when 
implanted within a patient's body in the expanded configuration, and the frame also comprises an 
outflow end portion defining an outflow end of the frame (12) opposite the inflow end of the 
frame (12); wherein the frame (12) further comprises an inflow ring of twelve generally 
hexagonal openings at the inflow end portion of the frame (12) and an outflow ring of twelve 
generally hexagonal openings at the outflow end of the frame (12), the outflow ring of openings 
being a closest ring of openings to the outflow end of the frame (12), wherein the generally 
hexagonal openings of the outflow ring are larger than the generally hexagonal openings of the 
inflow ring; wherein the openings of the inflow ring are defined by a circumferentially extending 
first row of angled struts arranged end-to-end, a circumferentially extending second row of 
angled struts arranged end-to-end, and a plurality of axially extending struts interconnecting the 
first and second rows of angled struts; and wherein each of the axially extending struts joins to a 
U-shaped crown structure joining adjacent ends of struts of the first row of angled struts and 
joins to a U-shaped crown structure joining adjacent ends of struts of the second row of angled 
struts; and a leaflet structure (14) positioned within the frame (12) and secured to leaflet 
attachment portions of the frame (12), the leaflet structure (14) comprising a plurality of leaflets, 
each leaflet comprising a leaflet body, a free outflow edge, two opposing upper tabs, two 
opposing lower tabs, two notches between the upper tabs and the lower tabs, and an inflow edge 
portion extending between the lower tabs and including a lower apex; wherein the plurality of 
leaflets are secured to one another at their adjacent sides to form commissures of the leaflet 
structure (14); and wherein a first portion of each upper tab is folded against the respective 
leaflet in a first plane and a second portion of the each upper tab is folded in a second plane 
different than the first plane; wherein the prosthetic heart valve (10) further comprises an inner 
skirt positioned primarily inside the frame and an outer skirt positioned primarily outside the
frame (12); wherein the inner skirt comprises an inflow edge oriented toward the inflow end of 
the frame (12), an outflow edge oriented toward the outflow end of the frame (12), a first lateral 
edge, and a second lateral edge, wherein the first and second lateral edges of the inner skirt are 
oriented at an oblique angle relative to the inflow edge of the inner skirt, and wherein the first 
and second lateral edges of the inner skirt are secured together such that the inner skirt forms an 
annular shape; wherein the prosthetic heart valve (10) further comprises reinforcing strips (72) 
positioned between the inflow edge portions of the leaflets and the inner skirt, wherein the outer 
skirt comprises a first lateral edge, a second lateral edge, an inflow edge extending between 
inflow ends of the first and second lateral edges of the outer skirt, and an outflow portion 
extending between outflow ends of the first and second lateral edges of the outer skirt, wherein 
the outflow portion comprises a plurality of alternating projections and notches, and wherein the 
first and second lateral edges of the outer skirt are coupled together such that the outer skirt 
forms an annular shape.