Title:
INSUFFLATION SYSTEM AND INSUFFLATION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/115835
Kind Code:
A1
Abstract:
This insufflation system is equipped with an insufflation device 1 supplying gas into a body cavity of a patient, and an aspiration device 22 aspirating the gas from the body cavity at a predetermined aspiration flow rate via an aspiration tube 23. The insufflation device 1 comprises a flow rate sensor 5 for measuring the gas supply flow rate, a pressure sensor 9 for measuring the internal pressure in the body cavity of the patient, an electropneumatic proportional valve 3 controlling the gas supply flow rate, a pinch valve 21 controlling the opening-closing of the aspiration tube, and a control unit 6 calculating, from the difference between the body cavity internal pressure and the insufflation target pressure, a first target supply flow rate, and if the first target supply flow rate is smaller than a preset limit supply flow rate, opening the pinch valve 21 while controlling the electropneumatic proportional valve 3 so as to supply the gas at a second target supply flow rate, which is the sum of the first target supply flow rate and the aspiration flow rate.
Inventors:
YAMAOKA KOJI (JP)
KASUYA YUMA
TORII SHINYA
KIMURA KEITA
HIRAGA KUNITOSHI
UESUGI TAKEFUMI
KASUYA YUMA
TORII SHINYA
KIMURA KEITA
HIRAGA KUNITOSHI
UESUGI TAKEFUMI
Application Number:
PCT/JP2018/044689
Publication Date:
June 11, 2020
Filing Date:
December 05, 2018
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B17/94
Domestic Patent References:
| WO2016071893A1 | 2016-05-12 |
Foreign References:
| JP4363693B2 | 2009-11-11 | |||
| JPH0994252A | 1997-04-08 |
Attorney, Agent or Firm:
ITOH Susumu (JP)
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