Method for processing an endoscope

Patent metadata

Field	Value
Publication number	US-10702129-B2
Application number	US-201715782970-A
Country	US
Kind code	B2
Filing date	Oct 13, 2017
Priority date	Oct 14, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A method for reprocessing an endoscope for the implementation of leak testing the endoscope, the method including: connecting the endoscope in an airtight manner to a compressed air hose, which is operatively connected to a compressed air source; subjecting the endoscope to compressed air up to a predetermined pressure level via the compressed air hose; during the pneumatic leak measurement and after opening of an outlet valve, measuring a temporal course of air pressure in the endoscope without any further compressed air supply; measuring a temporal change of the air pressure at the outlet valve; and determining one of a tightness of the endoscope or a leakage of the endoscope based on a temporal gradient of the temporal change of the air pressure.

First claim

The invention claimed is:

1. A method for reprocessing an endoscope for implementation of leak testing the endoscope, the method comprising:
connecting the endoscope in an airtight manner to a compressed air hose, which is operatively connected to a compressed air source;
supplying the endoscope with compressed air from the compressed air source up to a predetermined pressure level via the compressed air hose;
opening an outlet valve to release compressed air from the endoscope;
during a time period in which the outlet valve is open, stopping the supply of compressed air from the compressed air source;
during the time period in which the outlet valve is opened and the supply of compressed air is stopped, measuring a temporal course of air pressure in the endoscope;
measuring a temporal change of the air pressure at the outlet valve; and
determining one of a tightness of the endoscope or a leakage of the endoscope based on a temporal gradient of the temporal change of the air pressure;
wherein, where a gradient set-point value for the temporal gradient of the temporal change of the air pressure is exceeded, the tightness of the endoscope is determined.

2. The method according to claim 1 , wherein one or more of the temporal change of the air pressure after the opening of the outlet valve is determined or the temporal change thereof is determined.

3. The method according to claim 1 , wherein the time period during which the outlet valve is opened is less than 20 seconds.

4. The method of claim 3 , wherein the time period during which the outlet valve is opened is less than 10 seconds.

5. The method of claim 3 , wherein the time period during which the outlet valve is opened is-less than 5 seconds.

6. A method for reprocessing an endoscope for the implementation of leak testing the endoscope, method comprising:
connecting the endoscope in an airtight manner to a compressed air hose, which is operatively connected to a compressed air source;
supplying the endoscope with compressed air from the compressed air source up to a predetermined pressure level via the compressed air hose;
opening an outlet valve to release compressed air from the endoscope;
during a time period in which the outlet valve is open, stopping the supply of compressed air from the compressed air source;
during the time period in which the outlet valve is opened and the supply of compressed air is stopped, measuring a temporal course of air pressure in the endoscope;
measuring a temporal change of the air pressure at the outlet valve; and
determining one of a tightness of the endoscope or a leakage of the endoscope based on a temporal gradient of the temporal change of the air pressure;
wherein, in the event that the temporal gradient of the temporal change of the air pressure falls below a gradient set-point value, the leakage of the endoscope is determined.

Assignees

• Winter & Ibe Olympus

Inventors

• Thate Henning

Classifications

• A61B1/123

  using washing machines · CPC title

• A61L2/24

  Apparatus using programmed or automatic operation · CPC title

• A61B1/00057 Primary

  provided with means for testing or calibration · CPC title

• A61B1/125

  using fluid circuits · CPC title

• G01M3/2846

  for tubes (G01M3/30 takes precedence) · CPC title