System for simultaneous microwave sterilization of multiple medical instruments

• US 5,645,748 A
• Filed: 06/07/1995
• Issued: 07/08/1997
• Est. Priority Date: 10/07/1994
• Status: Expired due to Term

• Current Assignee: Quiclave LLC
• Original Assignee: Quiclave LLC
• Inventors: Schiffmann, Robert Frank, Held, Jeffery Scott
• Primary Examiner(s): Leung, Philip H.
• Application Number:
  US08/486,208
• Time in Patent Office: 762 Days
• Field of Search: 219/710, 219/711, 219/712, 219/713, 219/754, 219/762, 219/736, 219/716, 422/21
• US Class Current: 219/710
• CPC Class Codes: A61L 2/12 Microwaves
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment
• CPC Class Codes: H05B 6/6408 Supports or covers specially adapted for use in microwave heating apparatus
• CPC Class Codes: H05B 6/6494 for cooking
• CPC Class Codes: H05B 6/806 for laboratory use

Abstract

A microwave sterilization system including a microwave oven having a microwave source that produces microwave radiation. The oven encloses a first chamber and a second chamber. Each chamber has a pouch containing an object and is positioned therein so as to be exposed to the microwave radiation, wherein each pouch has an interior which contains the object corresponding to that pouch. The system further includes a sensor system for detecting the temperatures of said both interiors and produces signals representative of those temperatures. Those signals are sent to the microwave source so as to control the emission of microwave radiation from the microwave source.

Claims

1. A microwave sterilization system, comprising:

a microwave oven having a microwave source that produces microwave radiation and wherein said oven encloses a first chamber and a second chamber;

said first chamber having a first pouch positioned therein so as to be exposed to said microwave radiation, wherein said first pouch has a first interior which contains a first metallic object;

said second chamber having a second pouch positioned therein so as to be exposed to said microwave radiation, wherein said second pouch has a second interior which contains a second metallic object;

a sensor system for detecting the temperatures of said first interior and said second interior and produces signals representative of those temperatures;

wherein said signals are sent to said microwave source so as to control the emission of microwave radiation from said microwave source so that said first and second metallic objects are sterilized while preventing arcing of the first and second metallic objects.

2. The system of claim 1, wherein said microwave source produces pulsed emissions of microwave radiation.

3. The system of claim 2, wherein said signals are sent to said microwave source so as to control the pulsed emissions of microwave radiation from said microwave source.

4. The system of claim 1, comprising a comparator to compare the values of said signals with a predetermined signal value representative of a predetermined temperature.

5. The system of claim 4, wherein when one of said signals has a value equal to said predetermined signal value then the power of said microwave source is reduced.

6. The system of claim 1, wherein said sensor system comprises:

a first sensor to detect the temperature of said first interior; and

a second sensor to detect the temperature of said second interior.

7. The system of claim 6, comprising a comparator to compare the values of said signals with a predetermined signal value representative of a predetermined temperature.

8. The system of claim 7, wherein when one of said signals has a value equal to said predetermined signal value then the power of said microwave source is reduced.

9. The system of claim 1, wherein said sensor system comprises a sensor to detect the individual temperatures of the first and second interiors corresponding to each chamber.

10. The system of claim 9, comprising a comparator to compare the values of said signals with a predetermined signal value representative of a predetermined temperature.

11. The system of claim 10, wherein when one of said signals has a value equal to said predetermined signal value then the power of said microwave source is reduced.

12. The system of claim 1, comprising a conveying device which sequentially moves said first and second chambers before said sensor so that said sensor can detect the temperature of the interior of the chamber before it.

13. The system of claim 12, wherein said conveying device comprises a carousel.

14. The system of claim 12, comprising a comparator to compare the values of said signals with a predetermined signal value representative of a predetermined temperature.

15. The system of claim 14, wherein when one of said signals has a value equal to said predetermined signal value then the power of said microwave source is reduced.