SFS ADJUSTABLE VASCULAR RING MEANS FOR TREATING SFS SYNDROME AND IMPLANTABLE KIT INCLUDING SAID RING MOLD AND METHOD FOR OBTAINING SUCH RING

摘要

The present invention is adapted to be inserted and closed around a blood vessel with an inner diameter adjustable by expansion / contraction to control the flow rate and / or pressure of the fluid flowing through the blood vessel, for example, the portal vein, as the inner diameter of the blood vessel is adjusted. Related to the perivascular ring. The ring of the present invention can regulate blood flow to the liver, especially after liver resection or liver transplantation, and also substantially improves the patient's survival rate. The ring according to the present invention is an inner diameter (adjustable for implantation and fixation around the tube) ). The ring has an outer belt 3 having a constant diameter in a closed position; In the closed state, it expands, contracts, and ) Can change the inner chamber (4); It includes a flexible expansion / contraction tube 5 with one end connected to the inner chamber 4 and the other end intended to be connected to the expansion means, and the outer 3 and inner 4 chambers open the open ring ( An open collar forming an open collar, at least one of which, preferably, the outer belt 3 is provided with means 7 for closing the ring 1 around the duct 2. The inner chamber 4 has an inner diameter corresponding to the minimum reduction diameter required when used to adjust the diameter of the duct 2 in the at rest and closed state. ).