CONTROL OF BLOOD FLOW

摘要

A blood flow control system comprising a primary arteriovenous fistula (11) having a secondary fistula (14) leading to a venous sink (13) and blood flow control means (25) engaged with the primary fistula (11) between the secondary fistula and the vein whereby restriction of the blood flow through the primary fistula (11) by the blood flow control means increases the flow of blood to the venous sink (13). An implantable device (54) for controlling such blood flow comprising inflatable pressure means (50) adapted to engage the primary fistula (11) between the secondary fistula (14) and vein, pump means in communication with the pressure means (50) adapted to inflate the pressure means whereby the pressure means restricts the flow of blood through the primary fistula (11) and means for deflating the pressure means. A valve (56) for deflating the pressure means (50) which can be opened by application of a compressive force on the exterior of the valve (56).