초록 ▼

A bag, method of manufacture and process are disclosed for the cryopreservation of thermolabile substances. The bag is characterized as having substantially uniform thickness throughout its length and height. The bag features a radiused peripheral edge wall for stress relief and to provide the const

A bag, method of manufacture and process are disclosed for the cryopreservation of thermolabile substances. The bag is characterized as having substantially uniform thickness throughout its length and height. The bag features a radiused peripheral edge wall for stress relief and to provide the constant cross-section. A peripheral flashing circumscribes the radiused edge wall and provides a suitable purchase area for sealing so that the thus formed bag is less susceptible to fracture particularly when exposed to cryogenic temperatures. The uniform thickness of the bag promulgates uniform heat transfer to and from the contents of the bag in relation to any surrounding medium at a different temperature. The bag affords more space for efficient storage and reduces heat invasion into the contents of the bag when a plurality of bags are placed, with their larger planar surfaces, in contact with each other.

대표청구항 ▼

[ What is claimed is:] [1.]1. A breakage resistant medical freezing bag containing liquid, comprising, in combination:a first bag portion formed from a blank of plastic sheet material having the ability to be deformed during bag fabrication; and subsequently retain a shape after fabrication having t

[ What is claimed is:] [1.]1. A breakage resistant medical freezing bag containing liquid, comprising, in combination:a first bag portion formed from a blank of plastic sheet material having the ability to be deformed during bag fabrication; and subsequently retain a shape after fabrication having the following characteristics: a substantially planar outer wall, a radiused edge wall circumscribing said planar outer wall and peripheral flashing circumscribing said radiused edge wall,a second bag portion sealed to said peripheral flashing and overlying said planar outer wall of said first bag portion, said first and second bag portions collectively defining a hollow enclosed volume to receive the liquid, said planar outer wall is spaced from said second bag portion by a dimension substantially equal to a radius of said radiused edge wall, said radiused edge wall dissipating forces engendered during phase change of the liquid in the bag during freezing and thawing,wherein an interior of said bag communicates with an exterior by means of a portal,wherein said portal extends through said flashing, andwherein a partition is provided within said bag defining an area of demarcation in said bag including at least two compartments separated one from the other by said partition.