Patent ID: 8876786

Claim:
A flow control device for medical liquid comprising a housing having an inlet and an outlet, and a channel formed in an inner surface of the housing, said channel extending at least partly in axial direction; a rotatable member rotatable in relation to the housing without being axially displaced, said rotatable member having at least two apertures; and a core member arranged inside said rotatable member, fixedly connected to said rotatable member, wherein a helical flow path being formed between the lateral surface of the core member and the inner surface of the rotatable member, said at least two apertures of the rotatable member being in communication with said helical flow path, and wherein each of said apertures debouches into the channel in at least one rotational position of the rotatable member, wherein a flow path is formed between the inlet and the outlet of the flow control device, the flow path comprising at least part of the helical flow path and the channel, wherein the flow is controlled by the rotational position of the rotatable member, determining which of said at as two apertures to be in communication with said channel, and thereby determining the length of the helical flow path to be comprised in said flow path between the inlet and the outlet, and wherein said core member is hollow, an inlet through hole to said helical flow path being arranged from the inside of the core member through the wall of said core member into the helical flow path.