CA2391787A1 - Humidity controller - Google Patents
Humidity controller Download PDFInfo
- Publication number
- CA2391787A1 CA2391787A1 CA002391787A CA2391787A CA2391787A1 CA 2391787 A1 CA2391787 A1 CA 2391787A1 CA 002391787 A CA002391787 A CA 002391787A CA 2391787 A CA2391787 A CA 2391787A CA 2391787 A1 CA2391787 A1 CA 2391787A1
- Authority
- CA
- Canada
- Prior art keywords
- gases
- level
- humidification
- humidity
- assistance apparatus
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract 28
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract 18
- 238000010438 heat treatment Methods 0.000 claims 24
- 230000037361 pathway Effects 0.000 claims 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 15
- 238000012544 monitoring process Methods 0.000 claims 1
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. ventilators; 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
-
- 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. ventilators; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
- A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
-
- 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. ventilators; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
- A61M16/1085—Preparation of respiratory gases or vapours by influencing the temperature after being humidified or mixed with a beneficial agent
-
- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
- A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D22/00—Control of humidity
- G05D22/02—Control of humidity characterised by the use of electric means
-
- 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. ventilators; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
-
- 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. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
-
- 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
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Air Humidification (AREA)
- Control Of Non-Electrical Variables (AREA)
- Air Conditioning Control Device (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A breathing assistance apparatus adapted to deliver humidified gases at a desired level of humidity to a patient, including a humidifier and a heated conduit (116). The humidifier includes a controller (100), which determines a parameter of gas flow rate and then the required power input (108) to the humidifier to deliver the gases to the patient at the required patient humidity. In a second embodiment, a conduit heater (116) is provided and the controller determines whether it has been correctly connected to the control . External sensors are dispensed with and thus the apparatus is simple and les s bulky.
Claims (17)
1. A breathing assistance apparatus adapted to deliver humidified gases at a desired level of humidity or at a desired temperature to a patient comprising:
humidification means having an electrical input power and capable of humidifying said gases up to a level of humidity prior to delivery to said patient, said level of humidity depending on said input power to said humidification means, transportation pathway means for conveying said humidified gases from said humidification means to said patient, and control means including stored instructions to:
(a) determine a parameter relating to the flow rate of said gases through said apparatus;
(b) determine based on at least said parameter the required electrical power input to said humidification means to deliver said gases to said patient at a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
(c) supply as said input power to said humidification means a level of power substantially similar to said determined power input to said humidification means.
humidification means having an electrical input power and capable of humidifying said gases up to a level of humidity prior to delivery to said patient, said level of humidity depending on said input power to said humidification means, transportation pathway means for conveying said humidified gases from said humidification means to said patient, and control means including stored instructions to:
(a) determine a parameter relating to the flow rate of said gases through said apparatus;
(b) determine based on at least said parameter the required electrical power input to said humidification means to deliver said gases to said patient at a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
(c) supply as said input power to said humidification means a level of power substantially similar to said determined power input to said humidification means.
2. A breathing assistance apparatus as claimed in claim 1 further comprising:
pathway heating means having an electrical input power, and being associated with said transportation pathway means wherein the gases flowing through said transportation pathway means are heated either directly or indirectly by said pathway heating means whereby the level of heating depending on said input power to said pathway heating means;
an ambient temperature sensor providing an indication of the exterior temperature;
and said instruction (b) further comprises determining based on at least said indication of the exterior temperature the required power input to said pathway heating means to deliver said gases to said patient at a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
and said instruction (c) further comprises supplying as said input power to said pathway heating means a level of power substantially similar to said determined power input to said pathway heating means.
pathway heating means having an electrical input power, and being associated with said transportation pathway means wherein the gases flowing through said transportation pathway means are heated either directly or indirectly by said pathway heating means whereby the level of heating depending on said input power to said pathway heating means;
an ambient temperature sensor providing an indication of the exterior temperature;
and said instruction (b) further comprises determining based on at least said indication of the exterior temperature the required power input to said pathway heating means to deliver said gases to said patient at a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
and said instruction (c) further comprises supplying as said input power to said pathway heating means a level of power substantially similar to said determined power input to said pathway heating means.
3. A breathing assistance apparatus as claimed in claim 2 wherein said humidification means comprises a humidification chamber adapted to receive a volume of water and water heating means to heat said water to produce water vapour within said chamber in use, said gases passing through said water vapour in said chamber thereby being humidified, said instruction (a) further comprising:
i) energising said water heating means to heat said water towards a first condition, ii) continuously monitoring said parameter or a variable indicative of a property of said water heating means, until said variable or said parameter indicates that said water has substantially reached said first condition, iii) determining said parameter based on at least said variable and said indication of the external temperature.
i) energising said water heating means to heat said water towards a first condition, ii) continuously monitoring said parameter or a variable indicative of a property of said water heating means, until said variable or said parameter indicates that said water has substantially reached said first condition, iii) determining said parameter based on at least said variable and said indication of the external temperature.
4. A breathing assistance apparatus as claimed in claim 3 wherein the determination of said power to said humidification means in said instruction (b) is also based on said indication of the external temperature.
5. A breathing assistance apparatus as claimed in claim 3 wherein said control means storing a further instruction:
(d) continuously monitor said parameter or said variable, and when a change in said parameter or said variable is greater than a first threshold said control means reverts to said instruction (b) and when a change in said parameter or said variable is greater than a second threshold said control means reverts to instruction (a).
(d) continuously monitor said parameter or said variable, and when a change in said parameter or said variable is greater than a first threshold said control means reverts to said instruction (b) and when a change in said parameter or said variable is greater than a second threshold said control means reverts to instruction (a).
6. A breathing assistance apparatus as claimed in claim 5 wherein if said change in said parameter of said variable indicates a decrease in flow a relatively short delay is caused before said control means reverts to said instruction (b) and if said change indicates an increase in flow a relatively long delay is caused before said control means reverts to said instruction (b).
7. A breathing assistance apparatus as claimed in claim 5 wherein said second threshold is based on the rate of change of said parameter or said variable with respect to time, wherein when said rate of change goes over said second threshold said control means reverts to said instruction (a).
8. A breathing assistance apparatus as claimed in claims 1 or 2 further comprising a gases supply means adapted to supply gases to said humidification means at a required pressure and resulting flow rate.
9. A breathing assistance apparatus as claimed in claim 8 wherein said gases supply means provides an output signal representative the level of electrical output to said gases supply means, said signal being supplied to said control means from which the flow rate of said humidified gases is determined.
10. A breathing assistance apparatus as claimed in claim 8 or claim 9 wherein said gases supply means comprise a fan driven by a variable speed electric motor.
11. A breathing assistance apparatus as claimed in claim 10 wherein said estimate of the flow rate of said humidified gases is based on the current drawn by said variable speed motor.
12. A breathing assistance apparatus as claimed in claims 1 or 2 further comprising a gases flow rate sensor from which said estimate of the flow rate of said humidified gases is determined directly.
13. A breathing assistance apparatus as claimed in any one of claims 3 to 7 further comprising:
chamber sensing means providing an indication of the temperature of said water heating means and providing an indication of the electrical power drawn by said water heating means, wherein said variable is indicative of said indicator of the temperature of said water heating means or said indication of the power drawn by said water heating means.
chamber sensing means providing an indication of the temperature of said water heating means and providing an indication of the electrical power drawn by said water heating means, wherein said variable is indicative of said indicator of the temperature of said water heating means or said indication of the power drawn by said water heating means.
14. A breathing assistance apparatus as claimed in claim 13 wherein said parameter is defined as the value of said power drawn by said water heating means divided by said temperature of said water heating means.
15. A breathing assistance apparatus for humidification of gases at a desired level of humidity or at a desired temperature comprising:
humidification means having an electrical input power capable of humidifying said gases up to a level of humidity, said level of humidity depending on said input power to said humidification means, and control means including stored instructions to:
(a) determine a parameter relating to the flow rate of said gases through said apparatus;
(b) determine based on at least said parameter the required electrical power input to said humidification means to humidify said gases to a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
(c) supply as said input power to said humidification means a level of power substantially similar to said determined power input to said humidification means.
humidification means having an electrical input power capable of humidifying said gases up to a level of humidity, said level of humidity depending on said input power to said humidification means, and control means including stored instructions to:
(a) determine a parameter relating to the flow rate of said gases through said apparatus;
(b) determine based on at least said parameter the required electrical power input to said humidification means to humidify said gases to a level of humidity or at a temperature substantially similar to said desired level of humidity or said desired temperature;
(c) supply as said input power to said humidification means a level of power substantially similar to said determined power input to said humidification means.
16. A breathing assistance apparatus adapted to deliver humidified gases at a desired level of humidity or at a desired temperature to a patient comprising:
humidification means having an electrical input power capable of humidifying said gases up to a level of humidity prior to delivery to said patient, said level of humidity depending on said input power to said humidification means, transportation pathway means for conveying said humidified gases from said humidifcation means to said patient,and pathway heating means having an electrical input power, and being associated with said transportation pathway means wherein the gases flowing through said transportation pathway means are heated either directly or indirectly by said pathway heating means whereby the level of heating depending on said input power to said pathway heating means;
control means which supply said input power to said humidification means and said pathway heating means, and providing a control output indicative of said pathway heating means being correctly connected to said control means and operating in according within predefined limits; and connection means to electrically connect said control means and said pathway heating means and including an indicator in use connected to said control output, wherein when said said pathway heating means being correctly connected to said control means and operating in according within predefined limits said control means energisng said indicator.
humidification means having an electrical input power capable of humidifying said gases up to a level of humidity prior to delivery to said patient, said level of humidity depending on said input power to said humidification means, transportation pathway means for conveying said humidified gases from said humidifcation means to said patient,and pathway heating means having an electrical input power, and being associated with said transportation pathway means wherein the gases flowing through said transportation pathway means are heated either directly or indirectly by said pathway heating means whereby the level of heating depending on said input power to said pathway heating means;
control means which supply said input power to said humidification means and said pathway heating means, and providing a control output indicative of said pathway heating means being correctly connected to said control means and operating in according within predefined limits; and connection means to electrically connect said control means and said pathway heating means and including an indicator in use connected to said control output, wherein when said said pathway heating means being correctly connected to said control means and operating in according within predefined limits said control means energisng said indicator.
17. A breathing assistance apparatus substantially as herein described with reference to and as illustrated by the accompanying drawings.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ33738299 | 1999-08-23 | ||
| NZ337382 | 1999-08-23 | ||
| PCT/NZ2000/000156 WO2001013981A1 (en) | 1999-08-23 | 2000-08-09 | Humidity controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2391787A1 true CA2391787A1 (en) | 2001-03-01 |
| CA2391787C CA2391787C (en) | 2010-10-05 |
Family
ID=19927464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2391787A Expired - Lifetime CA2391787C (en) | 1999-08-23 | 2000-08-09 | Humidity controller |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP1207929B1 (en) |
| JP (1) | JP4928035B2 (en) |
| KR (1) | KR100500761B1 (en) |
| CN (1) | CN1230221C (en) |
| AR (1) | AR026153A1 (en) |
| AU (1) | AU776699B2 (en) |
| BR (1) | BR0013570B1 (en) |
| CA (1) | CA2391787C (en) |
| MX (1) | MXPA02001881A (en) |
| MY (1) | MY130263A (en) |
| UY (1) | UY26305A1 (en) |
| WO (1) | WO2001013981A1 (en) |
| ZA (1) | ZA200201124B (en) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10139881B4 (en) | 2001-08-20 | 2017-06-08 | Resmed R&D Germany Gmbh | Apparatus for supplying a breathing gas and method for controlling the same |
| US7306205B2 (en) | 2002-08-30 | 2007-12-11 | Fisher & Paykel Healthcare Limited | Humidification system |
| EP1558322B1 (en) | 2002-11-01 | 2009-07-08 | Fisher & Paykel Healthcare Limited | System for sensing the delivery of gases to a patient |
| EP1804876B1 (en) * | 2004-08-10 | 2019-12-25 | ResMed Pty Ltd | Apparatus for humidification of breathable gas with profiled delivery |
| DK4049703T3 (en) | 2004-08-20 | 2023-12-18 | Fisher & Paykel Healthcare Ltd | APPARATUS FOR MEASURING PROPERTIES OF GASES SUPPLIED TO A PATIENT |
| WO2006126900A1 (en) | 2005-05-26 | 2006-11-30 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
| WO2007019628A1 (en) | 2005-08-15 | 2007-02-22 | Resmed Ltd | Low cost cpap flow generator and humidifier assembly |
| EP1973577B1 (en) | 2005-12-15 | 2012-08-01 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus with thermal disinfection conduit |
| DE102006019402A1 (en) * | 2006-04-24 | 2007-10-25 | Seleon Gmbh | Method for controlling a TNI device and TNI device |
| EP4176915A1 (en) | 2006-11-08 | 2023-05-10 | ResMed Pty Ltd | Respiratory apparatus |
| CN101220988B (en) * | 2007-01-12 | 2010-09-29 | 雃博股份有限公司 | Respiratory therapy device heating plate assembly |
| DE102007015038B3 (en) * | 2007-02-08 | 2008-03-27 | Dräger Medical AG & Co. KG | Device for preparing respiration gas, uses control device for determining temperature of output gas at given desired moisture level |
| US8063343B2 (en) * | 2007-10-29 | 2011-11-22 | Smiths Medical Asd, Inc. | Heated breathing circuit detection |
| US8511305B2 (en) * | 2007-10-29 | 2013-08-20 | Smiths Medical Asd, Inc. | Redundant power control for respiratory system heaters |
| CN107715271B (en) * | 2008-03-06 | 2023-10-24 | 瑞思迈私人有限公司 | Humidification of respiratory gases |
| US9802022B2 (en) * | 2008-03-06 | 2017-10-31 | Resmed Limited | Humidification of respiratory gases |
| CN105031796B (en) | 2008-05-27 | 2020-03-13 | 菲舍尔和佩克尔保健有限公司 | Humidifier chamber temperature control for accurate humidity control |
| CN102112171B (en) * | 2008-08-06 | 2015-04-01 | Ric投资有限责任公司 | System and method for determining humidity in a respiratory treatment system |
| CN104971416B (en) | 2008-09-10 | 2018-05-01 | 瑞思迈有限公司 | Improved power management in respiratory therapy |
| ES2391926T3 (en) * | 2009-05-05 | 2012-12-03 | Plastiflex Group | Breathing circuit system |
| AU2010206053B2 (en) | 2009-07-31 | 2014-08-07 | ResMed Pty Ltd | Wire Heated Tube with Temperature Control System, Tube Type Detection, and Active Over Temperature Protection for Humidifier for Respiratory Apparatus |
| CN103037928B (en) | 2010-04-27 | 2016-10-12 | 费雪派克医疗保健有限公司 | For supplying the device of gas to patient |
| CN102933247B (en) * | 2010-06-04 | 2016-04-20 | 皇家飞利浦电子股份有限公司 | The automatic control of temperature in patient circuit |
| CN110269990B (en) | 2011-01-24 | 2022-07-08 | 瑞思迈私人有限公司 | Humidifier |
| US8511651B2 (en) * | 2011-03-29 | 2013-08-20 | Smiths Medical Asd, Inc. | Heater unit humidification chamber monitor |
| BR112014021069A2 (en) * | 2012-02-22 | 2017-07-04 | Koninklijke Philips Nv | pressure support system configured to provide temperature controlled pressure support for an individual; and method of controlling a pressurized breathable gas flow to an individual |
| US9878123B2 (en) * | 2012-09-11 | 2018-01-30 | Fisher & Paykel Healthcare Limited | Surgical humidifier control |
| AU2012216775B2 (en) * | 2012-09-12 | 2018-06-28 | Fisher & Paykel Healthcare Limited | Surgical humidifier control |
| NZ743034A (en) | 2013-02-01 | 2019-12-20 | ResMed Pty Ltd | Wire heated tube with temperature control system for humidifier for respiratory apparatus |
| EP2770047B1 (en) * | 2013-02-26 | 2015-04-22 | ibidi GmbH | Device for providing a gas |
| MX2013014220A (en) * | 2013-12-04 | 2015-06-03 | Investigación Y Desarrollo En Equipo Médico S A De C V | Device for controlling the power supplied to a plate of a humidifying chamber and a tube heating element, and control method. |
| EP3791914B1 (en) | 2014-04-16 | 2023-07-12 | Fisher & Paykel Healthcare Limited | Systems for delivering gas to a patient |
| JP6411263B2 (en) * | 2015-03-27 | 2018-10-24 | オリンパス株式会社 | Insufflation device, method of operating insufflation device |
| GB2539222B (en) * | 2015-06-09 | 2019-03-06 | Intersurgical Ag | Humidifier flow determination |
| AU2017208697B2 (en) * | 2016-01-18 | 2023-03-02 | Fisher & Paykel Healthcare Limited | Humidification of respiratory gases |
| EP3727547A1 (en) | 2017-12-19 | 2020-10-28 | Koninklijke Philips N.V. | Ventilation system with cold passover humidification control |
| CN111150917B (en) * | 2019-12-31 | 2021-09-14 | 北京怡和嘉业医疗科技股份有限公司 | Humidification control system and method of ventilation treatment equipment |
| BR112022015293A2 (en) * | 2020-02-04 | 2022-09-20 | Fisher & Paykel Healthcare Ltd | RESPIRATORY OR SURGICAL HUMIDIFIER AND METHOD OF USE |
| WO2021221517A1 (en) * | 2020-04-29 | 2021-11-04 | Fisher & Paykel Healthcare Limited | Respiratory or surgical humidifier and method of use |
| CN116075333A (en) * | 2020-08-24 | 2023-05-05 | 费雪派克医疗保健有限公司 | Enthalpy-excess protection in humidifier systems |
| CN113679924B (en) * | 2021-08-30 | 2024-01-02 | 可孚医疗科技股份有限公司 | Water temperature control method and corresponding device for humidifying water tank of breathing equipment |
| CN114209953A (en) * | 2021-12-31 | 2022-03-22 | 江苏鱼跃医疗设备股份有限公司 | Breathing humidifier, dry burning detection method thereof and computer readable storage medium |
| CN116672556A (en) * | 2023-07-25 | 2023-09-01 | 湖南比扬医疗科技有限公司 | Control method and device for output power of breathing machine, breathing machine and storage medium |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1294808A (en) * | 1971-08-19 | 1972-11-01 | Philips Electronic Associated | Temperature-controlled gas humidifier for a medical ventilator |
| US4682010A (en) * | 1983-03-07 | 1987-07-21 | Safeway Products, Inc. | In-line electric heater for an aerosol delivery system |
| US4621632A (en) * | 1984-11-01 | 1986-11-11 | Bear Medical Systems, Inc. | Humidifier system |
| GB2192136B (en) * | 1986-07-04 | 1991-01-02 | Virotherm Lab Ltd | Medical breathing apparatus |
| US5031612A (en) * | 1990-04-24 | 1991-07-16 | Devilbiss Health Care, Inc. | System and method for delivering warm humidified air |
| AU660718B2 (en) * | 1991-10-04 | 1995-07-06 | Fisher & Paykel Healthcare Limited | Improvements in or relating to humidifiers |
| JP2654887B2 (en) * | 1992-05-22 | 1997-09-17 | 将秀 大塚 | Humidifier with additional condensation sensor |
| DE4310855C2 (en) * | 1993-04-02 | 1995-04-27 | Josef Dr Klimm | Device for monitoring at least one connection between two elements of a medical hose line system |
| AUPM279393A0 (en) | 1993-12-03 | 1994-01-06 | Rescare Limited | Estimation of flow and detection of breathing in cpap treatment |
| AU1486395A (en) * | 1994-03-15 | 1995-09-21 | Fisher & Paykel Limited | Respiratory air supply system with airflow dependent humidity |
| AU1486195A (en) | 1994-03-15 | 1995-09-21 | Fisher & Paykel Limited | A humidifier conduit |
| AUPN547895A0 (en) * | 1995-09-15 | 1995-10-12 | Rescare Limited | Flow estimation and compenstion of flow-induced pressure swings cpap treatment |
| CA2222830C (en) | 1996-12-02 | 2004-03-30 | Fisher & Paykel Limited | Humidifier sleep apnea treatment apparatus |
| CA2617349C (en) | 1997-06-17 | 2011-11-15 | Fisher & Paykel Healthcare Limited | Respiratory humidification system |
| AU3508799A (en) * | 1998-06-19 | 2000-01-06 | Fisher & Paykel Healthcare Limited | Humidified sleep apnea treatment apparatus |
| EP1237614B1 (en) * | 1999-12-10 | 2005-10-19 | Vapotherm, Inc. | Apparatus for respiratory tract therapy |
| SE0000605D0 (en) * | 2000-02-24 | 2000-02-24 | Siemens Elema Ab | Conduit for connecting a fluid transfer device to a patient |
-
2000
- 2000-08-09 BR BRPI0013570-4A patent/BR0013570B1/en not_active IP Right Cessation
- 2000-08-09 MX MXPA02001881A patent/MXPA02001881A/en active IP Right Grant
- 2000-08-09 WO PCT/NZ2000/000156 patent/WO2001013981A1/en active IP Right Grant
- 2000-08-09 CA CA2391787A patent/CA2391787C/en not_active Expired - Lifetime
- 2000-08-09 JP JP2001518113A patent/JP4928035B2/en not_active Expired - Lifetime
- 2000-08-09 CN CNB008118922A patent/CN1230221C/en not_active Expired - Lifetime
- 2000-08-09 AU AU67422/00A patent/AU776699B2/en not_active Expired
- 2000-08-09 EP EP00955190A patent/EP1207929B1/en not_active Expired - Lifetime
- 2000-08-09 KR KR10-2002-7002381A patent/KR100500761B1/en not_active Expired - Lifetime
- 2000-08-18 UY UY26305A patent/UY26305A1/en not_active Application Discontinuation
- 2000-08-22 AR ARP000104339A patent/AR026153A1/en active IP Right Grant
- 2000-08-22 MY MYPI20003855A patent/MY130263A/en unknown
-
2002
- 2002-02-08 ZA ZA200201124A patent/ZA200201124B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA02001881A (en) | 2003-07-21 |
| EP1207929A1 (en) | 2002-05-29 |
| AU776699B2 (en) | 2004-09-16 |
| CN1370085A (en) | 2002-09-18 |
| BR0013570B1 (en) | 2009-01-13 |
| WO2001013981A1 (en) | 2001-03-01 |
| JP4928035B2 (en) | 2012-05-09 |
| KR20020042651A (en) | 2002-06-05 |
| KR100500761B1 (en) | 2005-07-12 |
| BR0013570A (en) | 2002-06-11 |
| JP2003507138A (en) | 2003-02-25 |
| AU6742200A (en) | 2001-03-19 |
| EP1207929A4 (en) | 2006-03-08 |
| MY130263A (en) | 2007-06-29 |
| CN1230221C (en) | 2005-12-07 |
| AR026153A1 (en) | 2003-01-29 |
| EP1207929B1 (en) | 2012-05-30 |
| ZA200201124B (en) | 2003-07-30 |
| CA2391787C (en) | 2010-10-05 |
| UY26305A1 (en) | 2001-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200810 |