VENOUS VALVE PROSTHESIS

摘要

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.

主权项

1. A venous valve prosthetic implant for implantation in a vein for treatment of venous disease, the implant comprising:
an expandable anchoring frame comprising a lumen, a first end, a second end, and a middle valve portion between the first and second ends, wherein the middle valve portion expands to a smaller diameter than a diameter of either the first end or the second end; a valve seat attached to the anchoring frame nearer to the first end than to the second end; a ball retention member attached to the anchoring frame nearer to the second end that to the first end; and a ball disposed within the lumen of the anchoring frame, between the valve seat and the ball retention member, such that it moves back and forth within the middle valve portion, between a fully open position, in which the ball contacts the ball retention member to allow forward flow of blood in a downstream direction through the implant, and a fully closed position, in which the ball contacts the valve seat to prevent backflow of blood in an upstream direction through the implant.