WO1990004425A3 - Gas sampling device and water trap - Google Patents

Gas sampling device and water trap Download PDF

Info

Publication number
WO1990004425A3
WO1990004425A3 PCT/GB1989/001268 GB8901268W WO9004425A3 WO 1990004425 A3 WO1990004425 A3 WO 1990004425A3 GB 8901268 W GB8901268 W GB 8901268W WO 9004425 A3 WO9004425 A3 WO 9004425A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
water trap
foraminous
patient
analysed
Prior art date
Application number
PCT/GB1989/001268
Other languages
French (fr)
Other versions
WO1990004425A2 (en
Inventor
John Martin Evans
Original Assignee
Antec Systems
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB8824865.3 priority Critical
Priority to GB888824865A priority patent/GB8824865D0/en
Application filed by Antec Systems filed Critical Antec Systems
Publication of WO1990004425A2 publication Critical patent/WO1990004425A2/en
Publication of WO1990004425A3 publication Critical patent/WO1990004425A3/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483Physical analysis of biological material
    • G01N33/497Physical analysis of biological material of gaseous biological material, e.g. breath
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0808Condensation traps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • A61M16/0841Joints or connectors for sampling
    • A61M16/085Gas sampling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/1045Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0036Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00Measuring parameters of the user
    • A61M2230/20Blood composition characteristics
    • A61M2230/202Blood composition characteristics partial carbon oxide pressure, e.g. partial dioxide pressure (P-CO2)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00Measuring parameters of the user
    • A61M2230/20Blood composition characteristics
    • A61M2230/205Blood composition characteristics partial oxygen pressure (P-O2)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00Measuring parameters of the user
    • A61M2230/40Respiratory characteristics
    • A61M2230/43Composition of exhalation
    • A61M2230/437Composition of exhalation the anaesthetic agent concentration

Abstract

A gas sampling device includes a foraminous hydrophilic element (3) for removing moisture from a gas which is to be analysed, in particular form air expired by a patient during medical treatment. In one embodiment the foraminous element (3) is incorporated in a water trap (1), and is arranged so that incoming, humid gas is directed onto the element. The water trap (1) includes a suction port (7) to enable moisture and gas to be drawn into the foraminous element (3). This reduces contamination of the outgoing gas, which is to be analysed, by incoming gas. In a further embodiment the element (3) is disposed in the main airway connecting the patient to ventilating apparatus. In this case, the element serves both to dry expired air passing to analysis apparatus, and to humidify ventilation gases passing to the patient.
PCT/GB1989/001268 1988-10-24 1989-10-23 Gas sampling device and water trap WO1990004425A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8824865.3 1988-10-24
GB888824865A GB8824865D0 (en) 1988-10-24 1988-10-24 Gas sampling device & water trap

Publications (2)

Publication Number Publication Date
WO1990004425A2 WO1990004425A2 (en) 1990-05-03
WO1990004425A3 true WO1990004425A3 (en) 1990-06-28

Family

ID=10645695

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/001268 WO1990004425A2 (en) 1988-10-24 1989-10-23 Gas sampling device and water trap

Country Status (2)

Country Link
GB (1) GB8824865D0 (en)
WO (1) WO1990004425A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104287921A (en) * 2014-10-30 2015-01-21 王有存 Hyperbaric oxygen chamber oxygen supply and exhaust system

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69120734T2 (en) * 1990-06-18 1997-02-13 Engstrom Medical Ab Y-shaped ventilator connector
DE59409834D1 (en) * 1993-04-17 2001-09-27 Messer Griesheim Austria Ges M Device for the controlled addition of NO to patient breathing air
IL114964A (en) * 1995-08-16 2000-10-31 Versamed Medical Systems Ltd Computer controlled portable ventilator
AT320829T (en) 1997-01-17 2006-04-15 Ino Therapeutics Gmbh CONTROLLED GAS SUPPLY SYSTEM
CA2233392A1 (en) * 1997-04-18 1998-10-18 Kathleen A. Bergeron Gull Nitric oxide delivery system
US6938619B1 (en) 2000-06-13 2005-09-06 Scott Laboratories, Inc. Mask free delivery of oxygen and ventilatory monitoring
FR2829942A1 (en) * 2001-09-27 2003-03-28 Taema Measurement of flow rates in an artificial respirator for medical use with only a single respiratory branch, whereby a differential pressure is measured and related to the inspiration or expiration mass flow rate
DE602004028097D1 (en) 2004-03-31 2010-08-26 Artema Medical Ab Apparatus for analyzing respiratory gases
KR100646580B1 (en) 2005-07-16 2006-11-23 주식회사 멕 아이씨에스 Dehumidifier for a carbon dioxide gas measurement system
EP2106818B1 (en) 2008-03-31 2013-12-25 Nellcor Puritan Bennett Llc System for compensating for pressure drop in a breathing assistance system
US8181648B2 (en) 2008-09-26 2012-05-22 Nellcor Puritan Bennett Llc Systems and methods for managing pressure in a breathing assistance system
IT1395037B1 (en) * 2009-08-12 2012-09-05 Covidien Ag HUMIDIFICATION CARTRIDGE
AU2011217771B2 (en) * 2010-02-22 2015-07-02 Criticare Systems, Inc. Inline water trap
JP5758189B2 (en) * 2011-05-09 2015-08-05 日本光電工業株式会社 Moisture collector
CA2887987A1 (en) * 2012-10-26 2014-05-01 Massachusetts Institute Of Technology Humidity control in chemical reactors
SG10201800558WA (en) 2013-08-23 2018-02-27 Massachusetts Inst Technology Small volume bioreactors with substantially constant working volumes and associated systems and methods
DE102016109340A1 (en) * 2016-05-20 2017-11-23 Fresenius Medical Care Deutschland Gmbh Medical condensate trap for medical use, dehumidification method, blood treatment device, blood treatment device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272264A (en) * 1974-08-08 1981-06-09 Multiform Desiccant Products, Inc. Adsorbent package
DE3020034A1 (en) * 1980-05-24 1981-12-17 Berner International Gmbh, 2000 Hamburg Body for absorbing liq. from moving gas - has thin support layers sepd. by thicker porous layers
US4417574A (en) * 1982-05-03 1983-11-29 Sherwood Medical Company Liquid drain for patient breathing apparatus
WO1986001165A1 (en) * 1984-08-10 1986-02-27 Gerhard Wirmsberger Device for the dewatering of air
US4662907A (en) * 1985-07-09 1987-05-05 Sanai Co., Ltd. Apparatus for removing humidity from compressed air
US4673420A (en) * 1986-02-10 1987-06-16 Haker Leroy C Desiccant dryer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272264A (en) * 1974-08-08 1981-06-09 Multiform Desiccant Products, Inc. Adsorbent package
DE3020034A1 (en) * 1980-05-24 1981-12-17 Berner International Gmbh, 2000 Hamburg Body for absorbing liq. from moving gas - has thin support layers sepd. by thicker porous layers
US4417574A (en) * 1982-05-03 1983-11-29 Sherwood Medical Company Liquid drain for patient breathing apparatus
WO1986001165A1 (en) * 1984-08-10 1986-02-27 Gerhard Wirmsberger Device for the dewatering of air
US4662907A (en) * 1985-07-09 1987-05-05 Sanai Co., Ltd. Apparatus for removing humidity from compressed air
US4673420A (en) * 1986-02-10 1987-06-16 Haker Leroy C Desiccant dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104287921A (en) * 2014-10-30 2015-01-21 王有存 Hyperbaric oxygen chamber oxygen supply and exhaust system

Also Published As

Publication number Publication date
WO1990004425A2 (en) 1990-05-03
GB8824865D0 (en) 1988-11-30

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