Patent ID: 7914505

Claim:
An irrigation system comprising a reservoir for irrigating liquid, a probe for arrangement in a user, a conduit for conducting the irrigating fluid from the reservoir to the probe, a fixation member including an inflatable cuff for fixation of the probe in the user, a pump for pumping gas into the reservoir to transfer the irrigating liquid from the reservoir to the probe, and a control unit which may be set in at least a cuff inflating position and a liquid transferring position, said control unit including movable elements, each movable element movable with respect to each other movable element into at least said cuff inflating and liquid transferring positions, said movable elements including a first disc connected with at least an irrigating liquid tube connecting the control unit with the probe, a second disc connected with at least an irrigating liquid tube connecting the reservoir with the control unit, and an intermediate disc positioned between and being rotatable about an axis of rotation with respect to the first and second discs, said intermediate disc being settable in at least said cuff inflating and liquid transferring positions; wherein the first disc includes a first through-going cavity at a first distance from said axis of rotation and a second through-going cavity at a second distance from said axis of rotation, the second disc includes a first through-going cavity at said first distance from said axis of rotation, a second through-going cavity at said second distance from said axis of rotation and a third through-going cavity at a third distance from said axis of rotation, and the intermediate disc having, along a first line extending from said axis of rotation towards a periphery of the intermediate disc, a first through-going cavity at said second distance from the axis of rotation and a first oblong recess extending from said first intermediate disc through-going cavity to the periphery of the intermediate disc, and along a second line extending at an angle with respect to said first line from said axis of rotation towards the periphery of the intermediate disc, said intermediate disc having a second through-going cavity at said first distance from the axis of rotation and a second oblong recess opening towards said second disc and extending substantially over a distance corresponding to the second and third through-going cavities in the second disc, and along a third line extending at an angle with respect to said second line from said axis of rotation towards the periphery of the intermediate disc, said intermediate disc having a third through-going cavity at said second distance from the axis of rotation.