US3916891A - Device for moistenning respiratory air for collecting the condensate - Google Patents

Device for moistenning respiratory air for collecting the condensate Download PDF

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Publication number
US3916891A
US3916891A US483894A US48389474A US3916891A US 3916891 A US3916891 A US 3916891A US 483894 A US483894 A US 483894A US 48389474 A US48389474 A US 48389474A US 3916891 A US3916891 A US 3916891A
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United States
Prior art keywords
water
chamber
housing
moisture
air
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US483894A
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English (en)
Inventor
Klaus Freytag
Manfred Benn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draegerwerk AG and Co KGaA
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Draegerwerk AG and Co KGaA
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Publication of US3916891A publication Critical patent/US3916891A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/162—Water-reservoir filling system, e.g. automatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0808—Condensation traps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/162—Water-reservoir filling system, e.g. automatic
    • A61M16/164—Water-reservoir filling system, e.g. automatic including a liquid inlet valve system
    • A61M16/165—Water-reservoir filling system, e.g. automatic including a liquid inlet valve system with a float actuator
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/65—Vaporizers

Definitions

  • a device for moistening respiratory air comprises a housing having a hollow interior and having a side wall with an evaporator insert extending through the wall and into the interior of the housing which contains a conduit for the passage of water from a storage tank of the water into the interior of the housing.
  • a heater is located within the insert for heating the water and the excess water is collected in a water collector at the bottom of the housing after the water passes through a nozzle drain and filter.
  • the housing is provided with inlet and outlet connections for circulating the respiratory air through the housing and for passing it through the discharge water to moisten the air and to return it to the respiratory system.
  • a respirator comprising a gas supply tube for the nourishing gas leading to the breathing organs and a device for moistening and heating the breathing air.
  • the supply tube including the inhaling valve and an air moistening device connected in the gas line are located within a housing which is heated to a temperature above approximately 35C.
  • a manometer also located within the housing, is mounted on the gas supply line.
  • An exhaling valve and a volume gage placed in the exhalingline are located within the housing.
  • the air is moistened by means of an atomizer into which water is injected through a tube.
  • the mouth of the tube faces a baffle plate. Water in excess is evacuated through an opening in the atomizer.
  • the housing is provided with a heating element.
  • atomizers for supplying liquid particles into a main gas stream furnished to the patient, in which the atomizing nozzle is enclosed in a jacket.
  • the lower end of the jacket is extended down below the location at which the liquid impinges on the baffle plate in order to disperse the liquid parti- .cles.
  • the liquid particles are distributed within the jacket by the air stream of the atomizer.
  • the larger liquid particles which are undesirable for the therapy drop down while the smaller moisture particles enter the main gas stream and are supplied to the patient.
  • This device is expensive in construction and is intended for the supply of atomized medicaments in a long time therapy. It is disadvantageous that a heating of the breathing air is not possible. Insofar as a moistening is provided, it is not exactly controllable. The sterilization of the device is difficult.
  • Another known device for moistening and heating the air to be inhaled by the patient in artificial respiration comprises a receptacle for the water to be transformed into vapor at a desired temperature.
  • the receptacle is heated from the outside. For purposes of sterilization, it can be removed from the heating device.
  • the invention is directed to a device for moistening the breathing air for patients, which is simple in design and can be easily sterilized.
  • the compressible clearance volume in which the water vapor is mixed with the breathing air has to be small to permit the compression or expansion only of as small as possible a volume of breathing air.
  • an evaporator insert is located within a housing (moistener) through which both the respiratory and the exhaling air is circulated.
  • the evaporator insert includes a heating device and a water conduit extends through the insert.
  • the housing has a water collector at the bottom thereof which has an overflow and the conduit discharges into the housing above an outlet orifice above the collector.
  • the outlet orifice may be a nozzle and dirt filters may be mounted in advance thereof.
  • the outlet orifice may be closed by means of a float valve.
  • the water supply conduit extending through the evaporator insert, is connected through a controlling valve to a storage tank for distilled water.
  • Water passes from the tank into the evaporator conduit in a continuous and controlled manner.
  • the water vapor then formed mixes with the inhaling or exhaling air passing through the housing so that the air becomes moistened.
  • the produced condensate can flow out through the outlet orifice.-
  • the invention has the advantage that the heating and the water volume entering the evaporator can be adjusted to the necessary evaporation in a simple manner and accurately, so that an excessive supply of water and energy is prevented.
  • the clearance volume in the housing in which the water vapor is mixed with the breathing air may be very small.
  • the condensate is drained in a simple manner.
  • the water supply there are no special control devices for the water supply to be alternately controlled. Due to the simple adjustment of the water supply, the desired relative moisture content is obtained correctly and for long periods. The small clearance volume permits an accurate dosage of the breathing air. The carbon dioxide percentage passing into the inhaling air at the change from exhalation to inhalation is negligibly small. Also, due to its simple construction, the device may be easily sterilized. No sensitive com ponent parts are used. The heating is located in a separate space and not susceptible to disturbances. The device can be mounted into a respiratory system in a simple because the supply air is taken from the ambient air in the hospital whose temperature is kept sufficiently constant. Thus, the relative moisture content depends only on the water volume, the dosage of which is simple.
  • a device for measuring respiratory air which includes a housing through which the respiratory air is circulated and which has an insert extending 'into the interior of the housing for the passage of a water conduit for water which is sprayed into the housing into the respiratory air and which also carries heating means for heating the water passing through the conduit in a controlled amount and wherein the housing includes a water collector atthe bottom for receiving the water which is circulated.
  • a further object of the invention is to provide a device for moistening respiratory air which is simple in desing, rugged in construction and economical to manufacture.
  • FIG. 1 is a schematic partial elevational and sectional view of the moistening device for'respiratory air constructed in accordance with the invention.
  • FIG. 2 is a view similar to FIG. 1 of a portion of the device shown therein showing another'embodirnent.
  • FIG. 1 comprises a respiratory air moistening device which includes a housing generally designated 1 having an upper hollow portion with a rectangular insert generally designated 2 extending into the interior and provided with means for positioning a conduit 4 for conducting water which is supplied from a container or storage tank 6 through a flexible conduit 5 and which is discharged at an opening 7 into the interior of the housing 1.
  • the walls of the evaporator insert 2 are insulated and a heater 3 is provided within the insert chamber 4a in a position directly below the conduit 4 and the rate of heating may be controlled by an electrical supply 3a to effect the desired heating of the water which flows through the conduit.
  • Distilled water in an adjustable volume flows from the storage tank6 through the tube 5 and is discharged continuously through the discharge 7 into the hollow interior 8 of the housing 1.
  • a col'-" lector 11 for the water of condensation is'locat'eddirectly below the discharge 7 and is connected to the 4 communicates with the outer atmosphere.
  • the openings 15 may be located at a level below the nozzle 12 so that they act as an overflow.
  • the container 14 may also be provided with a water outlet 16 at the bottom if desired.
  • the collector 11 is open to the ambient air in order to prevent any buildup of pressure in the interior.
  • the storage tank 6 may be a conventional infusion bottle from which the distilled water is supplied in an adjustable manner.
  • the interior chamber 8 of the housing 1' is separated from the collector 11' by a float valve 20.
  • the valve 20 comprises a float 22 resting on a bowl shaped seat 21.
  • the water of condensation accumulates on the bottom of the space 8 and elevates the float 22 until the water flows out past the seat 17 into the collector ll.
  • a device for moistening respiratory air comprising a housing having a hollow interior defining a moisture chamber, an evaporator insert extending into said moisture chamber and defining a separate closed insert chamber, a water supply connected into said housing and having an elongated discharge conduit extending through said insert chamber and into said moisture chamber and terminating in a discharge opening in said moisture chamber for discharging water and vapor therein, means for continuously moving water through said discharge conduit, heater means located in said insert chamber adjacent said portion of said discharge conduit therein for heating said insert chamber and the portion of said discharge conduit therein for vaporizing at least a part of the water passing therethrough, means defining a water collection area at the bottom of said moisture chamber for collecting the surplus water delivered'into said housing moisture chamber through said discharge conduit and for also collecting condensate from respiratory air, said means defining a water collection area including an outlet for the water, an inlet in said moisture chamber for delivering respiratory air into said moisture chamber and through the water and vapor discharged by said discharge conduit and over said collection area, and an outlet
  • a device including aseparate condensed water collection chamber below said collection area and a drain between said collection area and said collection chamber for the passage of water from said collection area into said collection chamber.
  • a device according to claim 2 including a nozzle in said drain through which the water passes.
  • a device including a filter in said drain.
  • a device including a valve in said drain having a floa't portion in said moisture chamhollow space 8 through an open nozzle or drain 121A dirt filter 13 is mounted above the nozzle 12 in a pos'i-' tion to trap any dirt which has' passed therethroughfi
  • the container 14 of the collector 11 is provided with openings 15 through which the interior of the collector "ber which" is floatable on' the water of said moisture chamber to open and close the drain for the water from saidcollecting'area' to said collection chamber.

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Air Humidification (AREA)
US483894A 1973-07-14 1974-06-27 Device for moistenning respiratory air for collecting the condensate Expired - Lifetime US3916891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2336045A DE2336045C3 (de) 1973-07-14 1973-07-14 Vorrichtung zum Befeuchten der Beatmungsluft und Auffangvorrichtung für Kondensat

Publications (1)

Publication Number Publication Date
US3916891A true US3916891A (en) 1975-11-04

Family

ID=5887026

Family Applications (1)

Application Number Title Priority Date Filing Date
US483894A Expired - Lifetime US3916891A (en) 1973-07-14 1974-06-27 Device for moistenning respiratory air for collecting the condensate

Country Status (10)

Country Link
US (1) US3916891A (fr)
AT (1) AT343270B (fr)
BE (1) BE816891A (fr)
CH (1) CH569487A5 (fr)
DE (1) DE2336045C3 (fr)
FR (1) FR2236519B3 (fr)
GB (1) GB1479773A (fr)
IT (1) IT1018196B (fr)
NL (1) NL7408910A (fr)
SE (1) SE403439B (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028445A (en) * 1975-04-15 1977-06-07 Dragerwerk Aktiengesellschaft Apparatus for wetting respiratory gas
US4086305A (en) * 1976-06-10 1978-04-25 Dragerwerk Aktiengesellschaft Humidifier for respirators having a sealed container water supply to a water storage tank
US4098573A (en) * 1976-07-16 1978-07-04 American Sterilizer Company Portable moisturization and sterilization
US4121583A (en) * 1976-07-13 1978-10-24 Wen Yuan Chen Method and apparatus for alleviating asthma attacks
US4178334A (en) * 1975-04-18 1979-12-11 Respiratory Care, Inc. High volume humidifier/nebulizer
US4195044A (en) * 1975-04-18 1980-03-25 Respiratory Care, Inc. Humidifier-nebulizer
US5109471A (en) * 1989-07-24 1992-04-28 Volker Lang Device for warming and humidifying gases and more particularly respiratory gases during artificial respiration
US5329939A (en) * 1992-12-11 1994-07-19 Cimco, Inc. Humidifier with liquid level control
US5367604A (en) * 1992-04-24 1994-11-22 Fisher & Paykel Limited Humidifier apparatus and/or gases distribution chambers and/or temperature probe
US5383447A (en) * 1990-11-02 1995-01-24 Lang; Volker Device for warming and moistening gases having both an active and passive heat exchanger.
US6201223B1 (en) 1996-08-23 2001-03-13 Respironics, Inc. Humidification control unit and method of manufacturing same
US6394084B1 (en) 1996-07-16 2002-05-28 Respironics, Inc. Humidification unit, method of making same, and ventilatory system using such a humidification unit
WO2003075992A1 (fr) * 2002-02-28 2003-09-18 Müfa Ag Piege a eau
US20040261951A1 (en) * 2001-12-22 2004-12-30 Martin Baecke Evaporator for respirators and evaporation method
ITBO20090544A1 (it) * 2009-08-12 2011-02-13 Covidien Ag Cartuccia di umidificazione
US20110041843A1 (en) * 2009-08-20 2011-02-24 Jenkins Eddie Dewayne Adaptor and breathing assist device using the same
JP2012223586A (ja) * 2011-04-21 2012-11-15 Teleflex Medical Inc 自動水除去デバイス及び方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4312793C2 (de) * 1993-04-20 1995-04-27 Devilbiss Medizinische Produkt Vorrichtung zur Bereitstellung warmen befeuchteten Atemgases
DE202006011754U1 (de) * 2006-07-28 2007-12-06 GRÜNDLER GmbH Vorrichtung zur Kondensatvermeidung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772466A (en) * 1903-08-10 1904-10-18 James M Lockey Vaporizer.
US1532199A (en) * 1925-04-07 Ob cosmetic
US3282266A (en) * 1962-08-02 1966-11-01 Jr John M Walker Method and apparatus for humidifying inhalation mixtures
US3454005A (en) * 1966-09-23 1969-07-08 David H Eubanks Automatic bailing self-sealing water trap and emergency air inlet
US3584193A (en) * 1968-04-25 1971-06-08 Hans Badertscher Water vaporizers
US3695516A (en) * 1970-11-19 1972-10-03 Stile Craft Mfg Inc Heated nebulizer spray unit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE171686C (fr) *
DE93823C (fr) *
DE682989C (de) * 1936-07-14 1939-10-26 Johannes Bretschneider Vorrichtung zur physikalischen Behandlung der Atmungswege
DE719077C (de) * 1939-02-28 1942-03-28 Johannes Bretschneider Vorrichtung zur physikalischen Behandlung der Atmungswege
GB1294809A (en) * 1971-08-23 1972-11-01 Philips Electronic Associated Gas humidifier for a medical respirator
DE2263720A1 (de) * 1972-01-11 1973-07-19 Medizin Labortechnik Veb K Klimator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1532199A (en) * 1925-04-07 Ob cosmetic
US772466A (en) * 1903-08-10 1904-10-18 James M Lockey Vaporizer.
US3282266A (en) * 1962-08-02 1966-11-01 Jr John M Walker Method and apparatus for humidifying inhalation mixtures
US3454005A (en) * 1966-09-23 1969-07-08 David H Eubanks Automatic bailing self-sealing water trap and emergency air inlet
US3584193A (en) * 1968-04-25 1971-06-08 Hans Badertscher Water vaporizers
US3695516A (en) * 1970-11-19 1972-10-03 Stile Craft Mfg Inc Heated nebulizer spray unit

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028445A (en) * 1975-04-15 1977-06-07 Dragerwerk Aktiengesellschaft Apparatus for wetting respiratory gas
US4178334A (en) * 1975-04-18 1979-12-11 Respiratory Care, Inc. High volume humidifier/nebulizer
US4195044A (en) * 1975-04-18 1980-03-25 Respiratory Care, Inc. Humidifier-nebulizer
US4086305A (en) * 1976-06-10 1978-04-25 Dragerwerk Aktiengesellschaft Humidifier for respirators having a sealed container water supply to a water storage tank
US4121583A (en) * 1976-07-13 1978-10-24 Wen Yuan Chen Method and apparatus for alleviating asthma attacks
US4098573A (en) * 1976-07-16 1978-07-04 American Sterilizer Company Portable moisturization and sterilization
US5109471A (en) * 1989-07-24 1992-04-28 Volker Lang Device for warming and humidifying gases and more particularly respiratory gases during artificial respiration
US5383447A (en) * 1990-11-02 1995-01-24 Lang; Volker Device for warming and moistening gases having both an active and passive heat exchanger.
US5367604A (en) * 1992-04-24 1994-11-22 Fisher & Paykel Limited Humidifier apparatus and/or gases distribution chambers and/or temperature probe
US5329939A (en) * 1992-12-11 1994-07-19 Cimco, Inc. Humidifier with liquid level control
US6877510B2 (en) 1996-07-16 2005-04-12 Respironics, Inc. Unit for adjusting humidification
US6394084B1 (en) 1996-07-16 2002-05-28 Respironics, Inc. Humidification unit, method of making same, and ventilatory system using such a humidification unit
US6557551B2 (en) 1996-07-16 2003-05-06 Respironics, Inc. Unit for adjusting humidification
US6201223B1 (en) 1996-08-23 2001-03-13 Respironics, Inc. Humidification control unit and method of manufacturing same
US20040261951A1 (en) * 2001-12-22 2004-12-30 Martin Baecke Evaporator for respirators and evaporation method
US7144473B2 (en) * 2001-12-22 2006-12-05 Martin Baecke Evaporator for respirators and evaporation method
WO2003075992A1 (fr) * 2002-02-28 2003-09-18 Müfa Ag Piege a eau
ITBO20090544A1 (it) * 2009-08-12 2011-02-13 Covidien Ag Cartuccia di umidificazione
EP2283889A3 (fr) * 2009-08-12 2011-05-04 Covidien AG Cartouche d'humidification
US20110041843A1 (en) * 2009-08-20 2011-02-24 Jenkins Eddie Dewayne Adaptor and breathing assist device using the same
US8776787B2 (en) 2009-08-20 2014-07-15 Eddie Dewayne JENKINS Adaptor and breathing assist device using the same
JP2012223586A (ja) * 2011-04-21 2012-11-15 Teleflex Medical Inc 自動水除去デバイス及び方法
EP2514472A3 (fr) * 2011-04-21 2013-01-02 Teleflex Medical Incorporated Dispositif et procédé d'élimination automatique d'eau

Also Published As

Publication number Publication date
IT1018196B (it) 1977-09-30
DE2336045A1 (de) 1975-02-06
ATA573474A (de) 1977-09-15
SE7409143L (sv) 1975-01-15
NL7408910A (nl) 1975-01-16
SE403439B (sv) 1978-08-21
FR2236519B3 (fr) 1977-04-22
DE2336045B2 (de) 1977-08-18
AT343270B (de) 1978-05-26
FR2236519A1 (fr) 1975-02-07
GB1479773A (en) 1977-07-13
CH569487A5 (fr) 1975-11-28
DE2336045C3 (de) 1982-09-30
BE816891A (fr) 1974-10-16

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