Moisture detection system for a sterile package
AssigneeBaxter Travenol Laboratories, Inc.
InventorLeonard Alan White
Life of this patent
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Abstract
A system for indicating the presence of water in a sterile package is shown in the illustrative arrangement by the use of a water soluble pattern of ink or dye behind a gas permeable barrier provided to such package to enable sterilization of the package contents. The pattern is printed either on the paper of the barrier or on the sealing coating provided on the barrier paper for attachment to the package shell or it is printed on a separate member deposited in the package.
Claims17
A system for detecting water contamination which comprises:
- a package having sterile unfrozen contents covered by a gas permeable barrier;
- a water soluble dye pattern in said package, said pattern adapted to bleed in response to water in said package, for visibly indicating said water contamination.
A sterile package including a gas permeable barrier having a heat sealable coating on one side, a plastic shell secured to said barrier adjacent said one side for enclosing the contents of said package, the improvement comprising a water soluble pattern in said package adapted to bleed in response to water contamination in the package.
A sterile package, which comprises:
- a lid formed of TYVEK material having a heat sealable coating on one side thereof;
- a plastic shell secured to said lid on said one side for enclosing the contents of said package;
- a water soluble dye pattern printed on said heat sealable coating and adapted to bleed in response to water in the package, said dye pattern comprising a matrix of dots in the form of a grid.
Dependencies are inferred from the claim text.