A peripheral catheter assembly with haemostasis valve

A peripheral catheter assembly (1) of the kind comprising a hollow catheter hub (2,2') having a female proximal end (6) and a distal end (7) provided with a catheter tube (3), at least one infusion port (8) located between said distal end (7) and said proximal end (6), a hollow needle module (4) comprising a needle (18) held by a male socket (19) arranged to sealingly engage the female proximal end (6), and a sealing member (5;30;36) engaged inside the catheter hub (2) serves for facilitating venipuncture without unintended splashing of blood. A sealing valve (5;30;36) comprising a septum seal (14) having a weakened portion (15) surrounded by deflectable septum walls (14a,14b), and a hollow tubular extension (16) which protrudes towards a free end (17) from the periphery of the septum seal (14) and extends inside the catheter hub (2) past the infusion port (8) towards the distal end (7) of the catheter hub (2) provide a self-closable sealing member which provide the physician the freedom to leave the patient when the needle module is retracted.