Cleaning and sterilizing mechanism

• US 5,753,195 A
• Filed: 01/02/1996
• Issued: 05/19/1998
• Est. Priority Date: 01/02/1996
• Status: Expired due to Term

• Current Assignee: Parametrik Holdings, Inc.
• Original Assignee: Kew Import and Export Co., Inc.
• Inventors: Davis, David L., Langford, Terrence R.
• Primary Examiner(s): JASTRZAB, KRISANNE MARIE
• Application Number:
  US08/582,849
• Time in Patent Office: 868 Days
• Field of Search: 422/292, 422/294, 422/295, 422/297, 422/300, 134/170, 134/169 R
• US Class Current: 422/292
• CPC Class Codes: A61B 1/123 using washing machines
• CPC Class Codes: A61B 2090/701 for flexible tubular instruments, e.g. endoscopes
• CPC Class Codes: A61B 90/70 Cleaning devices specially adapted for surgical instruments
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment

Abstract

An improved apparatus which can be used for cleaning and/or sterilizing tubular items. A container is partitioned into two chambers with the item to be cleaned and/or sterilized is positioned to extend through the partition such that one opening lies in one chamber and another opening lies in the other chamber. A flexible membrane is positioned to affect each chamber. By deforming the flexible membrane, inward and outward, a flow between the chambers is created. This flow must pass through the hollow item. Mechanical pressure from the flow cleanses the interior of the tubular item and if a sterilant is used as the medium, then the interior portion of the hollow item is also sterilized.

Claims

1. A cleaning mechanism comprising:

a) a container for enclosing a tubular item to be cleaned, said container having a barrier therein dividing said container into a first chamber and a second chamber, said tubular item positioned to extend from said first chamber to said second chamber; and

,

b) oscillating means having,

1) a first flexible membrane in communication with said first chamber,

2) a second flexible membrane in communication with said second chamber, and,

3) pressure means for providing external pressure to one of said flexible membranes and simultaneously providing suction to another one of said flexible membranes.

2. The cleaning mechanism according to claim 1 further including clock means for controlling a period of time between oscillating of said pressure means.

3. The cleaning mechanism according to claim 2 further including;

a) means for introducing gas and liquids into said container; and

,

b) means for exhausting gas and liquids from said container.

4. The cleaning mechanism according to claim 3 further including:

a) at least two reservoirs containing selected liquids; and

,

b) control means in communication with said at least two reservoirs, said means for introducing, and said means for exhausting, said control means for,

1) selectively introducing liquids from a selected one of said at least two reservoirs into said container via said means for introducing, and,

2) exhausting liquids from said container via said means for exhausting.

5. The cleaning mechanism according to claim 1 further including:

a) a first hollow leg member supporting one side of said container, a hollow portion of said first hollow leg member in communication with said first flexible membrane and said first chamber; and

,

b) a second hollow leg member supporting a second side of said container, a hollow portion of said second hollow leg member in communication with said second flexible membrane and said second chamber.

6. The cleaning mechanism according to claim 1 wherein said first flexible membrane and said second flexible membrane are deformed by air pressure.

7. The cleaning mechanism according to claim 1 further including heating means for selectively heating an interior of said container.

8. The cleaning mechanism according to claim 3 wherein said means for exhausting communicates with a drain.

9. An apparatus for cleaning an item, said apparatus comprising:

a) a first chamber;

b) a second chamber, a portion of said item positioned in said first chamber;

c) a first hollow leg member supporting one side of said container, a hollow portion of said first hollow leg member in communication with at least one flexible membrane and said first chamber;

d) a second hollow leg member supporting a second side of said container; and

,

e) oscillating pressure means for alternatively applying external pressure and external suction against said at least one flexible membrane.

10. The apparatus according to claim 9 further including;

a) means for introducing a medium into said container; and

,

b) means for exhausting a medium from said container.

11. The apparatus according to claim 10 further including:

a) at least two reservoirs containing mediums; and

,

b) control means in communication with said at least two reservoirs, said means for introducing, and said means for exhausting, said control means for,

1 selectively introducing medium from a selected one of said at least two reservoirs into one of said chambers via said means for introducing, and,

2) selectively exhausting medium from one of said chambers via said means for exhausting.

12. The apparatus according to claim 9 further including means for drawing a sample of medium from said first chamber without breaking a seal surrounding said first chamber.

13. The apparatus according to claim 9 further including:

a) pump means for pumping ambient air;

b) filter means for restricting particles in air from said pump of a chosen size and larger from passing therethrough; and

,

c) means for introducing air from said filter means into said first chamber.

14. The apparatus according to claim 9 further including:

a) a filter; and

,

b) means for drawing gas from said first chamber and said second chamber through said filter and then exhausting said gas into the atmosphere.

15. A cleaning and sterilizing mechanism comprising:

a) a container for enclosing a tubular item, said container having a barrier therein dividing said container into a first chamber and a second chamber, said tubular item positioned to extend from said first chamber to said second chamber, said container positioned substantially level and further having,

1) a first hollow leg supporting a first edge of said container, a hollow portion of said first hollow leg in communication with said first chamber, and,

2) a second hollow leg supporting a second edge of said container, a hollow portion of said second hollow leg in communication with said second chamber;

b) a membrane system having,

1) a first flexible membrane in communication with the hollow portion of said first hollow leg, and,

2) a second flexible membrane in communication with the hollow portion of said second hollow leg; and

,

c) pressure means for selectively applying pressure against one of said flexible membranes of said membrane system.

16. The mechanism according to claim 15 wherein said pressure means includes means for providing external pressure to one of said flexible membranes and simultaneously providing external suction to another one of said flexible membranes.

17. The mechanism according to claim 16 further including clock means for controlling a period of time between oscillating said pressure means.

18. The mechanism according to claim 17 further including;

a) means for introducing gas and liquids into said container via said first hollow leg; and

,

b) means for exhausting gas and liquids from said container via said second hollow leg.

19. The mechanism according to claim 15 further including:

a) at least two reservoirs; and

,

b) control means in communication with said at least two reservoirs, said means for introducing, and said means for exhausting, said control means for,

1) selectively introducing liquids from one of said at least two reservoirs into said container via said means for introducing, and,

2) exhausting liquids from said container via said means for exhausting.

20. The mechanism according to claim 15 wherein said pressure means communicates force via air pressure.

21. The mechanism according to claim 15 further including heating means for selectively heating an interior of said container.

22. The mechanism according to claim 15 wherein said means for exhausting communicates with a drain.