Endoscope integrity tester including context-sensitive compensation and methods of context-sensitive integrity testing

• US 8,109,871 B2
• Filed: 04/04/2007
• Issued: 02/07/2012
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Medivators, Inc. (Steris PLC)
• Original Assignee: Minntech Corporation
• Inventors: Kubach, Melissa
• Primary Examiner(s): Nguyen, Anhtuan
• Assistant Examiner(s): Nia, Alireza
• Application Number:
  US11/696,390
• Publication Number:
  US 20070238923A1
• Time in Patent Office: 1,770 Days
• Field of Search: 600/101, 600/133
• US Class Current: 600/101
• CPC Class Codes: A61B 1/00057 provided with means for testing or calibration
• CPC Class Codes: G01M 3/26 by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Abstract

Computer systems and software for controlling an endoscope integrity tester. The pressurization and humidity measurement and calculations, and the resulting determination of passage or failure is automated and controlled to eliminate concerns of human error in the detection process. Further, the computer system is capable of adapting its calculations to specific endoscopes and particular testing changes to further improve accuracy by being context-sensitive.

Claims

1. A method for testing the integrity of an endoscope, the method comprising:

obtaining an endoscope;

supplying gas to an air enclosure which includes an internal volume of said endoscope to pressurize said air enclosure;

sealing said air enclosure;

measuring the pressure of said gas in said air enclosure over time;

detecting an first rate of decrease in air pressure;

recognizing a second rate of decrease in air pressure, said second rate being less than said first rate;

discarding said first rate;

comparing said second rate to a predetermined target rate to determine if said second rate is sufficiently high to indicate a leak in said endoscope; and

in the following consecutive sequence of steps;

instructing a user to manipulate said endoscope using a computer control system while said air enclosure is pressurized, the computer control system having an output device to instruct the user and an input device to indicate manipulation of the endoscope is complete said manipulation causing movement of said endoscope;

indicating to said computer control system that said manipulation of said endoscope is complete; and

re-measuring the pressure of said air enclosure after said manipulation is complete to indicate a presence of a leak in said endoscope.

2. The method of claim 1 wherein said instructing includes instructing manipulation of endoscope buttons.

3. The method of claim 1 wherein said instructing includes instructing manipulation of knobs which causes movement of endoscope tubing.

4. The method of claim 1 wherein said predetermined target rate is stored in a computer memory.

5. The method of claim 1 further comprising:

identifying said endoscope as having been tested previously.

6. The method of claim 5 wherein said predetermined target rate is determined based on at least one previous test of said endoscope.

7. The method of claim 1, wherein in said measuring, said pressure of gas is 4 lbf/in².

8. The method of claim 1 further comprising:

placing said endoscope in a holding device prior to said step of measuring.

9. The method of claim 8 wherein said holding device comprises a holding bin having a mat on its base, said mat including a plurality of fingers.

10. The method of claim 1, wherein said endoscope is manipulated by picking up the endoscope.

11. The method of claim 10, wherein said endoscope is manipulated when said computer control system is in a hold phase and pressure is measured during said manipulation.