Venous valve prosthesis
First Claim
1. A venous valve prosthetic implant for implantation in a vein for treatment of venous disease, the implant comprising:
- one tubular expandable anchoring frame, consisting of a stent structure extending an entire length of the prosthetic implant, from an upstream end to a downstream end, and forming a lumen that extends through the anchoring frame from the upstream end to the downstream, wherein the expandable anchoring frame is expandable from a collapsed configuration, for delivery through a delivery catheter, to an expanded configuration outside of the delivery catheter, and wherein the anchoring frame has an hourglass shape with a narrow middle portion between the upstream end and the downstream end, both of which are wider than the middle portion;
a valve seat directly attached to an inner surface of the narrow middle portion of the anchoring frame, wherein the valve seat is expandable and collapsible;
a ball disposed within the lumen of the anchoring frame between the valve seat and the downstream end, such that the ball moves back and forth between the valve seat and the downstream end, between an open position, in which the ball is positioned to allow forward flow of blood through the implant, and a closed position, in which the ball contacts the valve seat to prevent backflow of blood through the implant; and
a ball retention tether comprising;
a first end directly attached to the ball; and
a second end directly attached to the anchoring frame at a location upstream from the ball.
1 Assignment
0 Petitions
Accused Products
Abstract
A venous valve prosthetic implant for treatment of venous disease may include an expandable anchoring frame, a valve seat attached to the anchoring frame, a ball retention member attached to the anchoring frame, and a ball disposed within the lumen of the anchoring frame, between the valve seat and the ball retention member. The anchoring frame may include a first end, a second end, and a middle valve portion, where the middle valve portion expands to a smaller diameter than a diameter of either the first end or the second end. The ball may move back and forth within the middle valve portion, between a fully open position and a fully closed position.
61 Citations
25 Claims
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1. A venous valve prosthetic implant for implantation in a vein for treatment of venous disease, the implant comprising:
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one tubular expandable anchoring frame, consisting of a stent structure extending an entire length of the prosthetic implant, from an upstream end to a downstream end, and forming a lumen that extends through the anchoring frame from the upstream end to the downstream, wherein the expandable anchoring frame is expandable from a collapsed configuration, for delivery through a delivery catheter, to an expanded configuration outside of the delivery catheter, and wherein the anchoring frame has an hourglass shape with a narrow middle portion between the upstream end and the downstream end, both of which are wider than the middle portion; a valve seat directly attached to an inner surface of the narrow middle portion of the anchoring frame, wherein the valve seat is expandable and collapsible; a ball disposed within the lumen of the anchoring frame between the valve seat and the downstream end, such that the ball moves back and forth between the valve seat and the downstream end, between an open position, in which the ball is positioned to allow forward flow of blood through the implant, and a closed position, in which the ball contacts the valve seat to prevent backflow of blood through the implant; and a ball retention tether comprising; a first end directly attached to the ball; and a second end directly attached to the anchoring frame at a location upstream from the ball. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A venous valve prosthetic implant for implantation in a vein for treatment of venous disease, the implant comprising:
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one tubular expandable anchoring frame, consisting of a stent structure extending an entire length of the prosthetic implant, from an upstream end to a downstream end, and forming a lumen that extends through the anchoring frame from the upstream end to the downstream, wherein the expandable anchoring frame is expandable from a collapsed configuration, for delivery through a delivery catheter, to an expanded configuration outside of the delivery catheter, and wherein the anchoring frame has an hourglass shape with a narrow middle portion between the upstream end and the downstream end, both of which are wider than the middle portion; a valve seat directly attached to an inner surface of the narrow middle portion of the anchoring frame, wherein the valve seat comprises an expandable and collapsible ring; a ball disposed within the lumen of the anchoring frame between the valve seat and the downstream end, such that the ball moves back and forth between the valve seat and the downstream end, between an open position, in which the ball is positioned to allow forward flow of blood through the implant, and a closed position, in which the ball contacts the valve seat to prevent backflow of blood through the implant; and a ball retention expandable wire anchor, comprising; a first end directly attached to the ball; and an expandable second end disposed upstream of the valve seat and having an expanded diameter wider than a diameter of the valve seat, such that the second end is wide enough that it cannot pass through the valve seat and is thus configured to prevent the ball from passing out of the valve prosthetic implant in a downstream direction. - View Dependent Claims (24, 25)
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Specification