PINCHING CLOSED A COLLAPSIBLE TUBE FOR BIOPHARMACEUTICAL USE

摘要

The invention relates to a pinching device (1) including two sections (3a, 3b), each having a hollow portion (4a and 5a) with male (11b) and female (11b) cavities, and locking means (25a and 25b), the surfaces (13 and 14) of the cavities (11a and 11b) forming a passage (23) for positively pinching the tube. The male cavity (11 b) is U-shaped with a web (37) and two flanges (38a, 38b), the female cavity (11 a) is U-shaped with a web ((35) and two flanges (36a, 36b), and the pinching passage is U-shaped with a web (41) and two flanges (42a, 42b). The two opposing flanges (36a, 38a and 36b, 38b) gradually come closer together towards the ends thereof (43) opposite the webs of the cavities (35 and 37) and each of the two flanges (42a and 42b) of the pinching passage (23) has an opening with a width that decreases towards the end thereof opposite the web (41) of the pinching passage (23). The width of the opening of the pinching passage (23) is at least slightly smaller than twice the thickness of the wall of the collapsible tube to be pinched. The invention intends to constitute a single-use pinching closing device 1, performing a function of closing the tube onto itself in the pinching region, preventing the flow of fluid in the tube.