×

Rapid read-out biological indicator

  • US 5,252,484 A
  • Filed: 08/21/1991
  • Issued: 10/12/1993
  • Est. Priority Date: 11/29/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A sterility indicator comprisinga) an outer container having liquid impermeable and substantially gas non-absorptive walls, said container having at least one opening therein;

  • andb) a gas-transmissive, bacterial impermeable means covering said opening; and

    c) contained within said outer container, a detectable amount of active enzyme isolated from an appropriate microorganism, said enzyme having sufficient activity following a sterilization cycle which is sublethal to at least one test microorganism commonly used to monitor sterilization, to react with an effective amount of a substrate system for said enzyme to produce a detectable enzyme-modified product within less tan twenty-four hours, yet said enzyme having activity which is reduced to "background" following a sterilization cycle which is lethal to said test microorganisms.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×