PROSTHETIC VALVES FORMED WITH ISOTROPIC FILTER SCREEN LEAFLETS
First Claim
1. An apparatus comprising:
- an isotropic filter screen formed of monofilament strands of biocompatible material that is porous to a body fluid;
the isotropic filter screen is flexible to flex back and forth between a concave and a convex condition; and
the isotropic filter screen is cut into a shape of one or more prosthetic valve leaflets each having at least one sealed edge.
1 Assignment
0 Petitions
Accused Products
Abstract
“In one embodiment of the invention, a prosthetic check valve is disclosed with leaflets cut from filtration screen material with uniform pore size having openings with a dimension inclusively between fifteen and sixty microns. The screen material is made from biocompatible material, such as polyester or polypropylene. One or more outer edges of the leaflet are fused or sealed to prevent fraying of the material and to form a more non-thrombogenic surface. Prosthetic check valves assembled with the leaflets can be collapsed to a diameter of less than or equal to twenty-nine french (29f), sterilized, and stored in a collapsed state. The collapsed valve can be implanted without prior rinsing to remove sterilant.
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Citations
81 Claims
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1. An apparatus comprising:
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an isotropic filter screen formed of monofilament strands of biocompatible material that is porous to a body fluid; the isotropic filter screen is flexible to flex back and forth between a concave and a convex condition; and the isotropic filter screen is cut into a shape of one or more prosthetic valve leaflets each having at least one sealed edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15-64. -64. (canceled)
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65. An apparatus for checking back flow of a fluid in a tubular-like shaped vessel, the apparatus comprising:
a prosthetic valve leaflet formed from an isotropic screen material, the isotropic screen material having pores with a pore size inclusively between fifteen microns and sixty microns, and a thickness inclusively between one-hundredth of a millimeter and one-tenth of a millimeter. - View Dependent Claims (66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
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81-105. -105. (canceled)
Specification