Freezing and thawing bag, mold, apparatus and method

  • US 6,232,115 B1
  • Filed: 11/25/1997
  • Issued: 05/15/2001
  • Est. Priority Date: 06/25/1996
  • Status: Expired due to Term
First Claim
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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, and wherein 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.

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