Venous valve, system, and method with sinus pocket
A valve with a frame and valve leaflets that provide a sinus pocket. The valve provides for unidirectional flow of a liquid through the valve.
1. A valve comprising:
a first structural member that defines an elongate base portion having a first end, a second end, and an outer surface concentrically arranged relative a longitudinal axis, wherein the outer surface provides at least two points of a perimeter of a first elliptical plane orthogonal to and passing through the longitudinal axis, and wherein the first structural member at each of the first end and the second end includes a first curve and a second curve opposite the first curve with the first curve and the second curve of the first end positioned radially orthogonal to the first curve and the second curve of the second end of the base portion;
a second structural member that extends between the first end and the second end of the elongate base portion to define a bulbous portion, wherein the outer surface of the elongate base portion and the second structural member provide at least four points of a perimeter of a plane orthogonal to the longitudinal axis, wherein the plane has an area that is greater than the area of the first elliptical plane;
a valve leaflet connection location along the first structural member of the venous valve frame; and
at least two valve leaflets, each leaflet connected to the valve leaflet connection location.
2. The valve of claim 1 , wherein the perimeter of the plane for the bulbous portion-defines an elliptical shape.
3. The valve of claim 2 , wherein the first structural member defines a first axis of the elliptical shape and the second structural member defines a second axis of the elliptical shape that is twenty percent (20%) to fifty percent (50%) greater than the first axis.
4. The valve of claim 2 , wherein the first structural member defines a first axis of the elliptical shape and the second structural member defines a second axis of the elliptical shape that is one (1) to four (4) millimeters greater than the length of the first axis.
5. The valve of claim 1 , wherein the perimeter of the plane for the bulbous portion defines a round shape.
6. The valve of claim 1 , wherein the first curve and the second curve flare away from a center longitudinal axis.
7. The valve of claim 1 , wherein the first structural member includes surfaces defining a first opening and a second opening for the valve leaflet connection location, wherein the first and second openings are adjacent a region of the bulbous portion of the valve frame and positioned opposite each other along a common axis.
8. The valve of claim 1 , wherein the first elliptical plane is a circular plane.
9. The valve of claim 1 , wherein the at least two valve leaflets and the bulbous portion define a sinus pocket.
10. A system comprising:
a delivery catheter defining a lumen;
a valve joined to the delivery catheter, the valve comprising:
a first structural member that defines an elongate base portion having a first end, a second end, and an outer surface concentrically arranged relative a longitudinal axis, wherein the outer surface provides at least two points of a perimeter of a first elliptical plane orthogonal to and passing through the longitudinal axis, and wherein the first structural member at each of the first end and the second end includes a first curve and a second curve opposite the first curve with the first curve and the second curve of the first end positioned radially orthogonal to the first curve and the second curve of the second end of the base portion;
a second structural member that extends between the first end and the second end of the elongate base portion to define a bulbous portion, wherein the outer surface of the elongate base portion and the second structural member provide at least four points of a perimeter of a plane orthogonal to the longitudinal axis, wherein the plane has an area that is greater than the area of the first elliptical plane;
a valve leaflet connection location along the first structural member of the venous valve frame; and
at least two valve leaflets, each leaflet connected to the valve leaflet connection location;
a deployment shaft disposed within the lumen of the catheter; and
a sheath positioned at a distal end of the catheter, the valve configured to be at least partially positioned within the sheath.