Circuit for biological liquid

摘要

The invention concerns a circuit comprising a bag (111) comprising two flexible films (145, 146) and routing network connectors, and a press (110) comprising a first shell (114) and a second shell (113) clamping the bag to form pipes (104) between the films, the first shell comprising a pinch valve (120) which comprises an actuator (121) comprising a movable member (124) and in register with the moveable member an elastically compressible pad (131) which, when the valve is in an open position, has a resting configuration in which a second face (33) of the pad is concave and locally delimits a shaping channel (118), and, when the valve is in a closed position, has a pinching configuration in which the second face (133) is convex, with the pipe and the pad sandwiched between a shaping channel (116) and the moveable member.

主权项

1. A circuit for biological liquid, comprising a plurality of routing connectors (2) and a network (3; 103) for routing liquid between said connectors, comprising:
a bag (11; 111) comprising two flexible films (45, 46; 145, 146) and said routing network connectors (2); and a press (10; 110) comprising a first shell (14; 114) and a second shell (13; 113) clamping said bag (11; 111) in a state in which pipes (4; 104) of said liquid routing network (3; 103) are formed between said films (45, 46; 145, 146), said first shell (14; 114) comprising for each of said pipes (4; 104) a shaping channel (18; 118), said second shell (13; 113) comprising for each of said pipes (4; 104) a shaping channel (16; 116) facing a corresponding shaping channel (18; 118) of the first shell (14; 114); with said first shell (14; 114) comprising at least one pinch valve (20; 120) for one of said pipes (4; 104), wherein the valve (20; 120) comprises an actuator (21; 121) comprising a movable pinching member (24; 124), wherein the valve (20; 120) has an open position in which the moveable member (24; 124) is in a retracted position in which it does not pinch the pipe (4; 104) and has a closed position in which the moveable member (24; 124) is in an extended position in which it pinches the pipe (4; 104); said valve (20; 120) further comprising, in register with said moveable pinching member (24; 124), an elastically compressible pad (31; 131), wherein the pad (31; 131) has a first face (32; 132) nearest the moveable member (24; 124) and a second face (33; 133) nearest the pipe corresponding to said pinching member (4; 104), wherein the pad (31; 131), when the valve (20; 120) is in an open position, has a resting configuration in which said second face (33; 133) is concave and locally delimits the first shell shaping channel (18; 118) of the pipe corresponding to said pinching member (4; 104), and, when the valve (20; 120) is in a closed position, has a pinching configuration in which said second face (33; 133) is convex, with said pipe (4; 104) and said pad (31; 131) sandwiched between the second shell shaping channel (16; 116) of the pipe corresponding to said pinching member (4; 104) and the moveable pinching member (24; 124); wherein said pad (131) forms part of an individual local plate (130).