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US 9,067,027 B2Granted
Flow reversing device and fluid treatment apparatus
AssigneeGambro Lundia AB
InventorsJan Peter Sternby, Eddie Nilsson, Lennart Jönsson
Life of this patent
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Abstract
The invention relates to a multi-ports extracorporeal medical device (1) having a selector body (19) which can be linearly displaced within the housing (16) in order to create different flow paths and connection among the ports. The device can for instance be used for reversing the flow in an extracorporeal blood circuit.
Claims10
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 linearly along said inner surface of the lateral wall.
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;
- wherein said active portion includes two axially consecutive flat bodies (20a, 20b), which are axially guided inside the internal chamber and kept in angularly spaced positions.
Dependencies are inferred from the claim text.