Sterilization cassette and packaging

• US 7,811,530 B2
• Filed: 10/29/2004
• Issued: 10/12/2010
• Est. Priority Date: 10/29/2004
• Status: Active Grant

• Current Assignee: ASP Global Manufacturing GmbH (Fortive Corp.)
• Original Assignee: Ethicon Incorporated (Johnson & Johnson)
• Inventors: Morrison, Todd
• Primary Examiner(s): Conley; Sean E
• Assistant Examiner(s): JOYNER, KEVIN
• Application Number:
  US10/977,961
• Publication Number:
  US 20060093539A1
• Time in Patent Office: 2,174 Days
• Field of Search: 422/292, 422/28
• US Class Current: 422/292
• CPC Class Codes: A61L 2/186 Peroxide solutions
• CPC Class Codes: A61L 2/208 Hydrogen peroxide
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/18 Aseptic storing means

Abstract

A cassette for a sterilizer has one or more cells containing a sterilant. Packaging for the cassette includes and outer fluid impermeable envelope and an absorbent web wrapped around the cassette to absorb and contain any sterilant which may leak out of the cassette. The absorbent web includes a superabsorbent polymer.

Claims

1. A cassette for a sterilization process, the cassette comprising:

a body, the body having therein one or more cells containing a liquid oxidizing sterilant;

the body being packaged within an envelope; and

wherein the envelope also contains an absorbent material comprising a superabsorbent polymer absorbent of the oxidizing sterilant, the absorbent material being fire resistant.

2. The cassette according to claim 1 wherein the superabsorbent polymer retains liquid hydrogen peroxide without release at a pressure of 2.8 psig.

3. The cassette according to claim 1 wherein the absorbent material is contained within a web and wherein the web wraps around the body.

4. The cassette according to claim 3 wherein the absorbent material is bonded to the web.

5. The cassette according to claim 3, wherein the web is attached to the envelope.

6. The cassette according to claim 1 wherein the amount of absorbent material is sufficient to absorb all of the oxidizing sterilant contained within the one or more cells.

7. The cassette according to claim 6 wherein the absorbent material is capable of retaining all of the oxidizing sterilant contained within the one or more cells up to at least a pressure of 2.8 psig.

8. The cassette according to claim 1 wherein the oxidizing sterilant comprises hydrogen peroxide.

9. The cassette according to claim 1 and further comprising within the envelope an indicator of the presence of liquid, the indicator being viewable from outside the envelope.

10. The cassette according to claim 9 wherein the indicator indicates the presence of the oxidizing sterilant.

11. The cassette according to claim 9 wherein the oxidizing sterilant is in a solution with water and wherein the indicator indicates the presence of water.

12. The cassette according to claim 1 wherein the superabsorbent material comprises a polyacrylate.

13. The cassette according to claim 12 wherein the superabsorbent polymer comprises a crosslinked sodium polyacrylate.

14. The cassette according to claim 1 wherein the superabsorbent polymer comprises a polyacrylamide.

15. The cassette according to claim 1 wherein the superabsorbent polymer is non-flammable.

16. A cassette for a sterilization process, the cassette comprising:

a body, the body having therein one or more cells containing a liquid oxidizing sterilant;

the body being packaged within an envelope; and

wherein the envelope also contains an absorbent material contained within a web and wherein the web wraps around the body, the absorbent material comprising a superabsorbent polymer absorbent of the oxidizing sterilant.

17. The cassette according to claim 16 wherein the web is attached to the envelope.

18. The cassette according to claim 16 wherein the oxidizing sterilant comprises hydrogen peroxide.

19. A cassette for a sterilization process, the cassette comprising:

a body, the body having therein one or more cells containing a liquid oxidizing sterilant;

the body being packaged within an envelope;

wherein the envelope comprises;

an at least partially transparent liquid impermeable outer sheet; and

an absorbent web bonded to the liquid impermeable outer sheet, the absorbent web comprising a non-woven polymer matrix impregnated with a superabsorbent polymer,

wherein the liquid impermeable outer sheet wraps around the body, and wherein the absorbent web is positioned between the body and the liquid impermeable outer sheet and adjacent to at least a portion of the body where the cells containing the sterilant are located.

20. The cassette according to claim 19, further comprising a sleeve, wherein the body is positioned within the sleeve, and wherein the liquid impermeable outer sheet wraps around the sleeve containing the body, and the absorbent web is positioned between the sleeve and the liquid impermeable outer sheet.