SINGLE-NEEDLE-PORT

摘要

The invention relates to a single-needle port (1) which can be subcutaneously implanted and used for haemodialysis. The port opening (2) of said port can be sealed using a closure element after the haemodialysis has been performed and can be re-opened for renewed treatment by inserting an aspirating cannula. The closure element is embodied by a ring (3) which encircles the port opening (2) and by a closure ball (4), whose diameter is greater than that of the port opening (2). Said ball rests against a sealing surface (5) of the ring (3) from the inside of the port in order to seal said port opening and can be displaced from said position in order to release the lumen of the port opening by an aspirating cannula which can be guided into said opening (2). At least one of the components of the closure elements consists of permanently magnetic material and the other component consists of a ferromagnetic material or of a permanently magnetic material of opposing polarity.