Package and method for storing blood
AssigneeInvestrop A.G.
InventorBard Meier Waage
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Abstract
A package for storing blood is formed of a plastic laminate with the layer next to the package cavity being formed of a fluorinated ethylene-propylene polymer and the outer layer being formed of a non-thermoplastic polyimide with a melting temperature substantially higher than that of the inner layer. Openings leading to the cavity are heat sealed after blood has been introduced into the cavity by applying heat by conduction near the opening through the outer layer on at least one side of the package for melting and sealing opposing inner layers together. According to the method for storing blood in the package, the package is sealed after blood has been introduced therein by so applying heat through the outer layer and sealing together the opposing inner layers.
Claims6
A sealed package containing a stored suspension of cellular components of blood, said package comprising nonrigid laminate wall portions resistant to a temperature of approximately that of liquid nitrogen, said walls being formed of a plastic laminate and defining an inner cavity containing said suspension, with at least one sealed opening to the inner cavity, the laminate including an inner layer next to the cavity and the suspension therein formed of a heat sealable, fluorinated ethylenepropylene polymer and further including an outer layer formed of a nonthermoplastic polyimide which as a melting temperature substantially higher than that of the inner layer so as to withstand heat-sealing temperatures applied directly thereto which actuate and thereby heat-seal said inner layer.
Dependencies are inferred from the claim text.