Patent ID: 8568346

Claim:
Extracorporeal medical device for reversing flow comprising: a housing ( 16 ) presenting at least four ports ( 12 , 13 , 14 and 15 ) and a lateral wall ( 21 ) having an inner surface ( 22 ) radially delimiting an internal chamber ( 17 ), a selector body ( 19 ) having at least an active portion ( 20 ) movable relative to the housing inside the internal chamber, between at least a first position and at least a second position, in said first position the active portion being positioned relative to the housing so that the first port ( 12 ) is in fluid communication with the second port ( 13 ) through said internal chamber ( 17 ) while the third port ( 14 ) is in fluid communication with the fourth port ( 15 ) through said internal chamber ( 17 ), and in said second position the active portion being positioned relative to the housing so that the first port ( 12 ) is in fluid communication with the fourth port ( 15 ) through said internal chamber ( 17 ) while the second port ( 13 ) is in fluid communication with the third port ( 14 ) through said chamber, wherein, as a consequence of the displacement of the selector body between the first and second position, the active portion of the selector body displaces at least axially along said inner surface of the lateral wall, means ( 23 ) for linearly displacing the selector body between said first position and said second position, parallel to a longitudinal axis ( 18 ) of the internal chamber ( 17 ).