Clamp for a flexible tube, pump equipped with means for opening such a clamp, and perfusion set equipped with such a clamp

摘要

A clamp (10) for a flexible tube, in particular an infusion tube, composed of a substantially U-shaped plastic band, the free end (111) of the first branch (11′) of the U being bent over to form the clamp head (11), to the free end (121) of the second branch, or back (12), so that, when closed, the back's free end (121) rests under the head's free end (111), and when opened, the back's free end (121) is at a distance above the head's free end (1110. The clamp has openings (114, 134) for extending a flexible tube and two opposite projections (113, 123) for obturating the flexible tube by compressing it when the clamp is closed. Locking means (112, 122) prevent the head end (111) from moving away from the back end (121) when the clamp (10) is in the closed position.

主权项

1. Clamp for a flexible tube that can be opened and closed, in particular, for a tube for perfusion, comprising:
a substantially U -shaped band of plastic material, with the free end of a first branch of the U-shaped band bent toward a free end of a second branch of the U-shaped band, called the back, to form a head of the clamp, so that in a closed position, the free end of the back, called the back end, is supported under the free end of the head, called the head end, wherein a first surface of the head end overlaps a second surface of the back end, whereas in an open position, the back end is above the head end at a distance, a pair of openings spaced so as to accommodate a flexible tube going through the clamp and supported by the clamp, wherein one of the opening is formed in the free end of the first branch, the opening having a top edge formed in the free end of the first branch so that the top edge of the opening is at a distance below the first surface of the head end, and two opposite protrusions to seal off the flexible tube by compressing the flexible tube when the clamp is in the closed position, means for moving the head end away from the back end in an opening direction parallel to the surfaces where the head end and the back end overlap, by exerting pressure on the head end in an opening direction parallel to the surfaces where the head end and the back end overlap, and means for locking the head end on the back end in the closed position so as to prevent the head end from moving away from the back end in the opening direction parallel to the surfaces where the head end and the back end overlap, when pressure is exerted only on the head end, and to permit the head end to move in the opening direction parallel to the surfaces where the head end and the back end overlap only after the back end has been moved down from the closed position, wherein the locking means comprises a tab located on one of the head end and the back end and a recess located on the other of the head end and the back end, the tab and the recess being arranged on the first and second surfaces where the two ends overlap so that in the closed position of the clamp, the tab goes into the recess, so that the locking means is located at a distance above the top edge of the opening formed in the free end of the first branch.