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Three envelope package for sterile specimens

  • US 5,031,762 A
  • Filed: 08/17/1989
  • Issued: 07/16/1991
  • Est. Priority Date: 10/07/1987
  • Status: Expired
First Claim
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1. A package for storing a sterile specimen in a cryogenic liquid medium comprising:

  • an outermost envelope having a non-sterile exterior impervious to the cryogenic liquid storage medium and having closure means impenetrably sealed against the liquid storage medium to define a closed sterile interior,an intermediate envelope removably received within the outer envelope having a closed sterile interior, andan innermost envelope removably received within the interior of the intermediate envelope, the innermost envelope having a sterile exterior and defining a closed sterile interior for containing a transplantable tissue so that the impervious outermost envelope protects against contact by the liquid storage medium, and the intermediate envelope maintains the sterile exterior of the innermost envelope irrespective of possible contamination occurring to the exterior of the intermediate envelope during removal from the outer envelope, said package being in the cryopreserved state.

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