IMPLANTABLE VALVE AND METHOD
First Claim
1. Implantable valve for treating venous insufficiency, comprising:
- a. an expandable scaffold having a distal section for blood in-flow, a center section and a proximal section for blood out-flow;
b. said center section comprising an enlarged bulbous section adjacent said distal section which is wider than a vein in a front view and about the width of a vein in a side view, said bulbous section tapering towards said proximal section;
c. said scaffold being embedded in a biocompatible, thrombus-resistant polymer forming a frame with a smooth inner surface throughout the distal, center and proximal sections which is substantially even with the scaffold interior without exposing same;
d. at least two polymeric leaflets having proximal ends transverse to the wider width of the bulbous section, said leaflets forming a valve outlet which opens and closes in response to venous blood flow, said leaflets having distal portions integral with the inner polymer surface at the distal end of said bulbous section;
e. said leaflets being formed from a biocompatible, thrombus-resistant polymer and defining a biomimetic sinus region with said bulbous section;
h. wherein opening of the valve induces predominantly biomimetic flushing of blood from the sinus region for smooth non-traumatic blood flow through said valve.
1 Assignment
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Accused Products
Abstract
Implantable valve for treating venous insufficiency having a self-expanding frame encased in polymer having a distal section for blood in-flow, a bulbous center section and a proximal section for blood out-flow. Polymeric leaflets have proximal ends forming a valve outlet which opens and closes in response to venous blood flow and distal portions integral with the inner polymer surface of the distal end of said bulbous section. The leaflets define a predominantly biomimetic sinus region with the bulbous section. Opening of the valve induces flushing of blood from the sinus region for smooth non-traumatic blood flow through said valve.
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Citations
19 Claims
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1. Implantable valve for treating venous insufficiency, comprising:
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a. an expandable scaffold having a distal section for blood in-flow, a center section and a proximal section for blood out-flow; b. said center section comprising an enlarged bulbous section adjacent said distal section which is wider than a vein in a front view and about the width of a vein in a side view, said bulbous section tapering towards said proximal section; c. said scaffold being embedded in a biocompatible, thrombus-resistant polymer forming a frame with a smooth inner surface throughout the distal, center and proximal sections which is substantially even with the scaffold interior without exposing same; d. at least two polymeric leaflets having proximal ends transverse to the wider width of the bulbous section, said leaflets forming a valve outlet which opens and closes in response to venous blood flow, said leaflets having distal portions integral with the inner polymer surface at the distal end of said bulbous section; e. said leaflets being formed from a biocompatible, thrombus-resistant polymer and defining a biomimetic sinus region with said bulbous section; h. wherein opening of the valve induces predominantly biomimetic flushing of blood from the sinus region for smooth non-traumatic blood flow through said valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Implantable valve for treating venous insufficiency, comprising:
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a. a self-expanding scaffold having a distal section for blood in-flow, a center section and a proximal section for blood out-flow; b. said center section comprising an enlarged bulbous section adjacent said distal section which is wider than a vein in a front view and about the same width or narrower in a vein in a side view, said bulbous section being non-circular and transversely symmetrical and tapering towards said proximal section; c. said scaffold being embedded in a biocompatible, thrombus-resistant polymer forming a frame with a smooth inner surface throughout the distal, center and proximal sections which is substantially even with the scaffold interior without exposing same; d. at least two polymeric leaflets having proximal ends transverse to the wider width of the bulbous section, said leaflets forming an S-shaped valve outlet which opens and closes in response to venous blood flow, said leaflets having distal portions integral with the inner polymer surface at the distal end of said bulbous section; e. said leaflets being formed from a biocompatible, thrombus-resistant polymer and defining a biomimetic sinus region with said bulbous section, said valve outlet and said sinus region being in about the lower quarter of said bulbous section; h. wherein opening of the valve induces predominantly biomimetic flushing of blood from the sinus region for smooth non-traumatic blood flow through said valve.
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Specification