Patent ID: 8863364

Claim:
A pinching closing device ( 1 ) for pinching a flexible tube in a pinching region, comprising: two cross-sections ( 3 a , 3 b ), each cross-section having a hollow part ( 4 a , 5 a ) with a male indentation ( 11 b ) and a female indentation ( 11 a ), respectively, able to be either in the open state where they are separated from one another or in the closed state where they are drawn together and closed on one another by reciprocal-locking means ( 25 a and 25 b ) and where surfaces ( 13 and 14 ) of the indentations ( 11 a and 11 b ) form a positive pinching passage ( 23 ) of the tube, wherein, in the transverse straight cross-section, the male indentation ( 11 b ) has a U shape with a core ( 37 ) and two wings ( 38 a and 38 b ); in the transverse straight cross-section, the female indentation ( 11 a ) has a U shape with a core ( 35 ) and two wings ( 36 a and 36 b ); and in the transverse straight cross-section, the pinching passage ( 23 ) has a U shape with a core ( 41 ) and two wings ( 42 a and 42 b ), the two wings ( 36 a , 38 a and 36 b , 38 b ) opposite each pair of wings facing the male indentation ( 11 a ) and the female indentation ( 11 b ) will draw together toward their ends ( 43 ) that are opposite to the cores of the indentations ( 35 and 37 ), at least in the zone of these ends ( 43 ), and each of the two wings ( 42 a and 42 b ) of the pinching passage ( 23 ) has, between the surfaces of the two indentations ( 11 a and 11 b ), an opening whose width will diminish towards its end that is opposite to the core ( 41 ) of the pinching passage ( 23 ), the width of the opening of the pinching passage ( 23 ) is at most slightly smaller than twice the thickness of the wall of the flexible tube to be pinched, and the pinching device ( 1 ) is disposable and performs an operation of the tube closing on itself in the pinching region preventing any passage of fluid into the tube.