Apparatus for indicating whether the interior of a container has been sterilized during a sterilization process

Claim 1

Apparatus for providing an indication as to whether the contents of a container have been sterilized during a sterilization process wherein the sterilization agent enters the container and comes into contact with its contents comprising: a first member, said first member having means for coacting with the sterilization agent to indicate the sterility of the contents of the container; a second member, said second member adapted to extend into the interior of the container to be sterilized, and adapted to receive and releasably engage said first member in a sealed relationship so that said coacting means of said first member can be positioned within the interior of the container to be sterilized during the sterilization process and so that said first member can be placed in and withdrawn from said second member without exposing the operator to the contents of the container or the contents of the container to the surrounding environment, at least a portion of said second member being selectively permeable to the sterilization agent so that the sterilization agent can come in contact with said coacting means of said first member without said coacting means being contaminated by the container contents; and means positioned between said first and second members for effecting said sealed relationship and for preventing the sterilization agent from coming in contact with said coacting means of said first member unless the sterilization agent has first permeated said second member.