Pressure pod (1) for haemodialysis medical lines comprising a hollow body (2, 3) with an intermediate flexible membrane (6) which delimits a gas chamber (7) and a liquid chamber (8) with inlet and outlet tubular fittings (10, 11) for connection to the haemodialysis medical line. A female luer-lock connector (12) comprising an outer tubular body (13) made of relatively rigid thermoplastic material and an inner tubular body (14) made of relatively soft thermoplastic material on which the outer tubular body (13) is axially blocked rotatably, is associated to at least one tubular fitting (11). The tubular fitting (11) is engaged within an annular cavity (22) formed between the inner and outer tubular bodies (13, 14) of the female connector (12).