Abstract: What is provided is a flow shut-off element, particularly for use in the medical field of peritoneal dialysis, consisting of a valve body (2) having an inner cavity (3) and a plurality of accesses (4, 5, 6); a selector having a projecting portion inserted into the inner cavity of the valve body and movable relatively to the latter into a predetermined number of operating positions to create predetermined paths in which the fluid flow is permitted and/or shut off between the said accesses. Also provided is an auxiliary element interposed in a removable way between the valve body and the selector, this element having positioning means to enable an operator to determine when one of the said predetermined operating positions of the selector has been reached.

Abstract: A description is given of a connecting device for tubes for medical use having a connection element (7) comprising a main body designed to be attachable to the end of a first tube, and a shut-off element made of an elastically deformable material and at least partly housed inside the main body, to allow or prevent, as required, fluid communication through the main body. The shut-off element has a longitudinal axis of symmetry and is designed to deform symmetrically. Also described are a tube and a peritoneal dialysis line using the connection element described above.

Abstract: What is provided is a flow shut-off element, particularly for use in the medical field of peritoneal dialysis, consisting of a valve body (2) having an inner cavity (3) and a plurality of accesses (4, 5, 6); a selector having a projecting portion inserted into the inner cavity of the valve body and movable relatively to the latter into a predetermined number of operating positions to create predetermined paths in which the fluid flow is permitted and/or shut off between the said accesses. Also provided is an auxiliary element interposed in a removable way between the valve body and the selector, this element having positioning means to enable an operator to determine when one of the said predetermined operating positions of the selector has been reached.

Abstract: A description is given of a connecting device for tubes for medical use having a connection element (7) comprising a main body designed to be attachable to the end of a first tube, and a shut-off element made of an elastically deformable material and at least partly housed inside the main body, to allow or prevent, as required, fluid communication through the main body. The shut-off element has a longitudinal axis of symmetry and is designed to deform symmetrically. Also described are a tube and a peritoneal dialysis line using the connection element described above.

Abstract: A dispensing unit for a fluid dispensing machine comprises at least an inlet duct (35) and an outlet duct (36) for fluid products, connected to a variable-volume pumping chamber (30) comprising at least one flexible wall (30a). Two non return valves mounted in counter-phase are located in the inlet and outlet ducts (35, 36), respectively. The pumping chamber is coupled to actuator means comprising a stepper motor (20) a screw-nut screw unit and a carriage (28). The carriage moves the pumping chamber from a zero position in which the chamber has a maximum volume to an upper limit in which the chamber has a minimum volume. An optic sensor (40) defines the zero point of the pumping chamber (30) so as to guarantee precision and repeatability of the dispensing operations.