Involuted endovascular valve and method of construction
First Claim
1. A method of forming a prosthetic valve, comprising:
- a. providing a tube of material having an inner wall, an outer wall, a diameter “
d”
, a height “
h” and
a wall thickness “
t”
;
b. cutting three longitudinal incisions from one end in said material about 120 degrees apart to form three flaps, each said flap having a first edge, a second edge generally parallel to said first edge, and a bottom edge;
c. involuting each said flap within said tube; and
,d. attaching each said first edge and second edge of each involuted flap to said inner wall of said tube.
4 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic tri-leaflet valve formed by involuting a portion of a tubular structure inside itself. The valve can be made by a method comprising providing a tubular segment in which three equidistant longitudinal incisions are made in one end of the tube creating three flaps which are involuted, i.e., folded, in toward the inside of the tube and the edges of the flaps secured to the inner wall of the tube to form leaflets. The tube can be formed of a single sheet of synthetic, organic or biological material and can be solid, woven, braided or the like. A braided configuration permits the valve to be annularly compressed and delivered to the site using a minimally invasive delivery mechanism, then expanded at the implantation site.
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Citations
22 Claims
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1. A method of forming a prosthetic valve, comprising:
-
a. providing a tube of material having an inner wall, an outer wall, a diameter “
d”
, a height “
h” and
a wall thickness “
t”
;b. cutting three longitudinal incisions from one end in said material about 120 degrees apart to form three flaps, each said flap having a first edge, a second edge generally parallel to said first edge, and a bottom edge; c. involuting each said flap within said tube; and
,d. attaching each said first edge and second edge of each involuted flap to said inner wall of said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10)
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8. An endovascular valve, comprising:
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a. a flexible tube of material comprising a first end and a second end, an inner wall, and an outer wall; and b. a plurality of leaflets formed from a portion of said first end by making a plurality of longitudinal incisions in said second end to form a plurality of flaps, each flap having a first edge and second edge, involuting said flaps toward said inner wall and securing said first edge and second edge of each flap to said inner wall of said tube. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification