VALVE PORT ASSEMBLY WITH INTERLOCK

摘要

A dual port vascular access assembly (20) comprises a first access port (24) and a second access port (28). The linkage is coupled between the first access port (24) to close the second access port (26) in the absence of an access tube in the first access port (24). Such port assemblies are particularly useful for implantation in the patients receiving hemodialysis. By connecting the first access port (24) to the blood withdrawal side of the system (10), blood withdrawal will be automatically terminated upon cessation of blood returned to due loss of the return access tube in the port assembly.