Multi-compartment sterilization system

• US 6,066,294 A
• Filed: 08/21/1997
• Issued: 05/23/2000
• Est. Priority Date: 08/21/1997
• Status: Expired due to Term

• Current Assignee: Ethicon Incorporated (Johnson & Johnson)
• Original Assignee: Ethicon Incorporated (Johnson & Johnson)
• Inventors: Lin, Szu-Min, Jacobs, Paul Taylor
• Primary Examiner(s): MCKANE, ELIZABETH L
• Application Number:
  US08/915,922
• Time in Patent Office: 1,006 Days
• Field of Search: 422/28, 422/33, 422/292, 422/297, 422/300, 422/305, 134/84, 134/88, 134/89, 134/92, 134/170, 134/183
• US Class Current: 422/28
• CPC Class Codes: A61L 2/186 Peroxide solutions
• CPC Class Codes: A61L 2/208 Hydrogen peroxide
• CPC Class Codes: A61L 2202/122 Chambers for sterilisation
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps

Abstract

An apparatus for the sterilization of a medical device includes a multi-chambered compartment having at least a first and a second rigid chamber therein. Each of the first and second chambers is adapted to independently serve as a sterilization chamber and can be operated independently. The apparatus also has a removable interface between the first and second chamber. The interface can have an opening for receiving a lumen device in such a way that the first and second chamber is put in fluid communication through the lumen. A source of sterilant is also included in the apparatus. This source is adapted to provide the sterilant in the first and/or second chamber. Containers sealed with gas-permeable, but microorganism-impermeable membrane can be used in the apparatus so that the sterility of the devices in the container is kept after the completion of a sterilization cycle.

Claims

1. An apparatus for the sterilization of a medical device, comprising:

a. a multi-chambered compartment having at least a first rigid chamber and a second rigid chamber therein, wherein each of said first and second chambers has a door, a pumping source, and a source of sterilant such that each of said chambers is adapted to independently serve as a sterilization chamber and can be operated independently;

b. an openable and closeable interface between said first and second chamber; and

c. a source of sterilant, said source adapted to provide said sterilant in said first and/or second chamber.

2. The apparatus of claim 1, further comprising a flow path between said first and second chamber, and a flow system to flow said sterilant through said flow path.

3. The apparatus of claim 2, wherein said interface has at least one opening which is openable and closeable.

4. The apparatus of claim 3, wherein said device comprises a lumen, and wherein said lumen of said device is placed through said opening such that said lumen is located partly in each of said first and second chambers.

5. The apparatus of claim 4, wherein said opening forms a gas-tight seal around said lumen.

6. The apparatus of claim 4, wherein said opening forms a loose-fitting seal around said lumen and allows sterilant to flow outside of said lumen through said opening.

7. The apparatus of claim 4, wherein said opening forms a tight-fitting seal around said lumen, said seal comprising a gas and/or liquid permeable material.

8. The apparatus of claim 3, wherein the opening in the interface is provided with an iris diaphragm.

9. The apparatus of claim 3, wherein the opening is defined by two plates with compressible material at edges or on surfaces adjacent said opening, and at least one of said plates is movable.

10. The apparatus of claim 3, wherein the opening is equipped with inflatable material so that when the inflatable material is inflated the opening is reduced to hold and seal a device to be sterilized.

11. The apparatus of claim 2, wherein said flow path is inside said multi-chambered compartment.

12. The apparatus of claim 11, wherein said flow path allows flow in both directions.

13. The apparatus of claim 12, wherein said flow path is through a lumen device.

14. The apparatus of claim 2, wherein said flow path is outside said multi-chambered compartment.

15. The apparatus of claim 14, wherein said flow path allows flow in both directions.

16. The apparatus of claim 2, wherein said flow path is a first flow path, said apparatus further comprising a second flow path.

17. The apparatus of claim 16, wherein said second flow path is outside said multi-chambered compartment.

18. The apparatus of claim 16, wherein said first flow path is in said interface.

19. The apparatus of claim 16, wherein said first flow path is inside said multi-chambered compartment and said second flow path is outside said multi-chambered compartment.

20. The apparatus of claim 2, wherein said flow system comprises a vacuum pump for applying vacuum, a pump for circulating sterilant, or heat-induced pressurization.

21. The apparatus of claim 1, wherein said interface is openable and closeable by being removable.

22. The apparatus of claim 1, wherein said interface is a removable solid plate.

23. The apparatus of claim 1, wherein said device is placed in a sterilant vapor-permeable and microorganism-impermeable container, said container maintaining the sterility of said device following sterilization and wherein said container is placed in said multi-chambered compartment.

24. The apparatus of claim 1, wherein said device is placed in either said first chamber or said second chamber.

25. The apparatus of claim 1, wherein each of said first and second chamber provides a diffusion restricted environment.

26. The apparatus of claim 1, wherein the first chamber and the second chamber have a first and a second sealable door, respectively, wherein the second sealable door is smaller than the first door and located in the first door.

27. The apparatus of claim 1, further comprising an opening without a lumen in said interface.

28. The apparatus of claim 1, wherein said source of sterilant is selected from the group consisting of an injector, a liquid flow-through device, a liquid or solid reservoir or aerosol spray device.

29. The apparatus of claim 1, wherein said source of sterilant is placed in a location selected from the group consisting of:

said first chamber;

said second chamber;

a container wherein said container is placed in said multi-chambered compartment;

an enclosure placed outside of said multi-chambered compartment, wherein said enclosure is connected to one of said first and second chambers, or to both of said first and second chamber.

30. The apparatus of claim 25, wherein said enclosure is connected to the container.

31. The apparatus of claim 25, wherein said source of sterilant is a liquid reservoir.

32. The apparatus of claim 1, wherein said sterilant comprises a liquid, a solid or condensed vapor.

33. The apparatus of claim 32, wherein said liquid comprises hydrogen peroxide or peracetic acid.

34. The apparatus of claim 32, wherein said sterilant is a solid hydrogen peroxide complex.

35. The apparatus of claim 34, wherein said hydrogen peroxide complex comprises a urea peroxide complex or sodium pyrophosphate peroxide complex or like complex.

36. The apparatus of claim 32, wherein said sterilant is a condensed vapor which comprises hydrogen peroxide or peracetic acid vapor.

37. The apparatus of claim 1, further comprising at least one additional interface.

38. The apparatus of claim 1, further comprising a heater to vaporize said sterilant.

39. The apparatus of claim 1, further comprising a plasma generator for exposing said device to a plasma.

40. The apparatus of claim 39, wherein said plasma generator is located in a separate container and said apparatus further comprises a flow system to flow said plasma into said multi-chambered compartment.

41. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one opening, such that said lumen is partly in said first chamber and partly in said second chamber across the interface;

b. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

c. creating directional flow of said sterilant with a pump from said first chamber, through said lumen, through said second chamber, through said pump, and back to said first chamber.

42. The method of claim 41, wherein the directional flow can be reversed.

43. The method of claim 41, wherein said pump is located outside the multi-chambered compartment.

44. The method of claim 41, wherein said opening is adjustable.

45. The method of claim 44, further comprising the step of adjusting said opening.

46. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a sterilant vapor-permeable and microorganism-impermeable container, said container maintaining the sterility of said device following sterilization;

b. placing said device in said container in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening, such that said lumen is partly in said first chamber and partly in said second chamber across the interface;

c. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

d. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

47. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening, such that said lumen is partly in said first chamber and partly in said second chamber across the interface, wherein either or both of said first and second chambers is a diffusion restricted environment;

b. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

c. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

48. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening, such that said lumen is partly in said first chamber and partly in said second chamber across the interface, wherein said opening forms a tight-fitting seal around said lumen, said seal comprising a gas and/or liquid permeable material;

b. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

c. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

49. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening, such that said lumen is partly in said first chamber and partly in said second chamber across the interface;

b. warming said device to be sterilized at a pressure below atmospheric pressure;

c. introducing a sterilant from a source of sterilant in said multi-chambered compartment, wherein step (b) occurs prior to step (c); and

d. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

50. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening equipped with an iris diaphragm which can seal around the device, such that said lumen is partly in said first chamber and partly in said second chamber across the interface;

b. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

c. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

51. A method for sterilizing an interior and exterior of a lumen device, comprising:

a. placing said device in a multi-chambered compartment having a first chamber, a second chamber, and an interface with at least one adjustable opening defined by two plates, wherein said lumen is partly said first chamber and partly in said second chamber across the interface, said plates having compressible material at edges or on surfaces adjacent said opening, wherein at least one of the plates is movable, so that the plates can be brought toward each other to hold and seal around said device;

b. introducing a sterilant from a source of sterilant in said multi-chambered compartment; and

c. creating a flow of sterilant between said first chamber and said second chamber through said lumen.

52. A method for sterilizing a medical device, comprising the steps of:

a. placing said device in a sterilant vapor-permeable and microorganism-impermeable container, said container maintaining the sterility of said device following sterilization;

b. placing said device in said container in a multi-chambered compartment having a first rigid chamber, a second rigid chamber, and an adjustable interface between said first and second chambers, wherein step (a) occurs prior to step (b);

c. adjusting the interface so that a device too big to fit into the first or second chamber can be sterilized in a bigger chamber formed by said first and second chamber; and

d. introducing a sterilant from a source of sterilant in said multi-chambered compartment.