Peelable seal
AssigneePharmachem Corporation
InventorWilliam E. R. Watt
Life of this patent
Estimating the term…
Abstract
A bag for storing blood components consisting of a sterilizable, flexible polyolefin container having at least two inlets at the top thereof forming part of the container and a bag-like protective closure hermetically enclosing the inlets. The protective closures are integral with the bag and formed by heat-sealing under combined application of heat and pressure a portion of at least two polyolefin film members having at least one oxidized surface therebetween so as to form a seal that is peelable to expose each of the inlets.
Claims11
In a bag for storing blood components consisting of a sterilizable, flexible closed polyolefin container having at least two inlets at the top thereof forming part of said closed container, the improvement which comprises, a bag-like protective closure hermetically enclosing each of said inlets, said protective closure being integral with said bag and formed by heat-sealing under combined application of heat and pressure a portion of at least two polyolefin film members having at least one oxidized surface therebetween so as to form a seal that is peelable to expose each of said inlets.
A blood platelet storage container comprising a sterilizable, flexible closed polyolefin bag having a substantial part of its periphery weld sealed, free end portions at the upper periphery of said bag having at least one oxidized surface, at least two inlet tubes being part of said container and formed along the upper periphery of said bag, at least one outlet tube formed along the upper periphery of said bag for removing the contents of said bag, each of said tubes being hermetically enclosed by a bag-like protective closure, said protective closure being integral with said bag and formed by heat-sealing together a part of said free end portions around each of said tubes with at least one oxidized surface therebetween by the application of combined heat and pressure so that the seal formed is peelable to expose each of said tubes without opening the periphery of said bag.
Dependencies are inferred from the claim text.