Single usage flexible infusion liquid bag for use in cylinder piston type perfusion device, has cover welded to bag for closing cylindrical housing of bag, where cover forms bayonet cooperating with cylinder

摘要

The bag has a cover welded to the bag for closing a cylindrical housing of the bag. The cover forms a bayonet cooperating with a cylinder. An annular weld is welded with the cover. A U-shaped weld of a multilayer membrane is folded on itself. The multilayer membrane is provided with a moisture barrier. The multilayer membrane is made of polyethylene or polypropylene material. Walls are sealed by a U-shaped profile to form bottom of the bag.