WO2003055552A1 - Dispositif de respiration - Google Patents

Dispositif de respiration Download PDF

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Publication number
WO2003055552A1
WO2003055552A1 PCT/DE2002/004727 DE0204727W WO03055552A1 WO 2003055552 A1 WO2003055552 A1 WO 2003055552A1 DE 0204727 W DE0204727 W DE 0204727W WO 03055552 A1 WO03055552 A1 WO 03055552A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
patient
control unit
sensor
gas line
Prior art date
Application number
PCT/DE2002/004727
Other languages
German (de)
English (en)
Inventor
Uwe Becker
Rudolf Hipp
Georg Lohmeier
Original Assignee
Müfa Ag
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
Application filed by Müfa Ag filed Critical Müfa Ag
Priority to DE10296152T priority Critical patent/DE10296152D2/de
Priority to AU2002360922A priority patent/AU2002360922A1/en
Publication of WO2003055552A1 publication Critical patent/WO2003055552A1/fr

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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
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • 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
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/1055—Filters bacterial
    • 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
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
    • 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
    • A61M16/0003—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
    • A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
    • 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
    • A61M16/0003—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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; 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
    • A61M2016/0042—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the expiratory 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
    • A61M2205/15—Detection of leaks

Definitions

  • the present invention describes a ventilation device for ventilating patients according to the preamble of claim 1.
  • Ventilation devices are mainly used in medical technology for artificial ventilation of patients.
  • such devices have a respirator with which the breathing gas to be supplied to the patient is processed; on the other hand, a gas supply system is used with which the breathing gas is supplied to the patient or is also carried away by the patient.
  • the gas supply system is connected to the ventilator.
  • Part of the gas supply system is the inspiration line, via which the breathing gas to be inhaled is supplied to the patient.
  • the gas supply system also has an expiration line, via which the expired gas exhaled by the patient is discharged and returned to the ventilator.
  • ventilation components can also be provided in the expiration line and in particular in the inspiration line, for example in order to clean or moisten the inspiration gas.
  • the composition of the inspiration gas which usually consists of compressed air and oxygen, can be set by the user within certain limits.
  • the pressure at which the inspiration gas is led to the patient can also be adjusted.
  • the gas volume supplied to the patient can also be regulated according to the prior art, this regulation usually being carried out by a control unit within the ventilator.
  • the pressure required depends on the condition of the patient's lungs. It must be large enough to inflate the lungs to a suitable extent, but may be a critical one Do not exceed the maximum. Especially in the case of a collapsed lung, the skillful choice of pressure is of particular importance for safe ventilation.
  • the amount of gas to be supplied per breath of the patient can also vary depending on the patient's condition and must be supplied safely.
  • the ventilator supports this spontaneous breathing. It ensures, for example, that the patient breathes in a certain volume of gas per unit of time. This volume is equated with an adequate oxygen supply for the patient. If the patient does not take independent breaths or if the patient's breaths are not deep enough, in practice the ventilator ensures that the breath that is not taken is made up for or the breaths that are too shallow are deepened. For this purpose, the set gas mixture is administered either after a certain time has elapsed or when a spontaneous breath is detected in such a way that the set minute volume results.
  • leaks can occur, for example, in the area of ventilation components that are provided in the gas supply system. They can be caused by material fatigue or by mechanical stress from the outside, for example by moving the patient. Blocking of the gas supply, for example by pinching or pinching off gas supply lines, can also occur in practice. Both types of disorders can be dangerous for the patient. If there is a leak in the inspiration line, pressure-controlled ventilation, for example, means that the ventilation pressure aimed for by the ventilator cannot be built up. As a result, the expected course of the inspiration phase is strongly influenced or incorrectly extended.
  • the ventilators usually recognize a patient's effort to breathe by the pressure in the gas supply system dropping even though the ventilator has not caused gas flow, or by an unexpected volume flow being detected in the gas supply system.
  • a resulting change in state in the gas supply system must be visibly recognized.
  • a leak in this system between the patient and the ventilator may falsify such changes of state so much that they cannot be recognized accordingly. This can lead to the patient having to make considerable efforts to actively inhale room air through the leak of the system, instead of being supported by the ventilator with oxygen-enriched breathing air.
  • the object of the invention is therefore to provide a device with which undesired physical states of inspiration or expiratory gases can be detected, so that these states can be taken into account and combined in the regulation of the gas supply.
  • the object is achieved by a ventilation device according to claim 1.
  • the invention is based on knowledge. that it is advantageous to provide a total of at least three sensors in the inspiratory gas line and / or expiratory gas line, with which the respective gas can be monitored with regard to one or more physical parameters.
  • the sensors are connected to the control unit of the ventilator, so that the control unit can evaluate the data transmitted by the sensors and take them into account when regulating the gas supply.
  • the parameters monitored by the sensors thus supply information about the respective gas flow to the control unit, from which the state of the gas flow can be determined. can be averaged. If this results in a state which does not correspond to the state to be brought about by the control unit, the control unit can issue an error message or an alarm or take into account and compensate for the deviation determined when regulating the gas supply.
  • the ventilation device has an inspiration line which supplies the gas to be inhaled to the patient.
  • An expiratory gas line drains the gas exhaled by the patient.
  • a gas supply system leads the two lines from the ventilator to the patient. For the most part, the two lines run separately within the gas supply system; only at the end on the patient side does a special line section take over the joint management of inspiration and expiratory gas. In this section, therefore, the inspiratory gas line and the expiratory gas line are identical.
  • ventilation components can be provided which influence the breathing gas in a suitable form. This can be, for example, a humidifier or a control element in the inspiratory gas line. A water trap or a control element can also be used for the expiratory gas line.
  • the respiratory gas which is prepared and made available by the ventilator, is introduced into the ventilator in its inspiratory gas branch, from there it is led out of the ventilator into the gas supply system, from where it finally flows from the separate inspiratory gas line into the common gas guide section near the patient and further into the lungs.
  • the expired gas exhaled by the patient is led back through this common section to the point in the gas supply system where the expiratory and inspiratory lines separate. From there, the expiratory gas passes through the expiratory gas line back into the ventilator, where the gas is usually released to the environment.
  • the expiration and inspiration gas line in the sense of the present invention thus extends from the patient to the ventilator and also within the same.
  • the patient-near section of the gas supply system in which the expiratory and inspiration gas are routed in a common line is also referred to below as an identical section.
  • the arrangement of the sensors within the ventilation device can advantageously be freely selected. It is therefore conceivable, for example, to arrange a first sensor in the inspiratory gas line within the ventilator and to arrange a second sensor in the expiratory gas line within the ventilator. A third sensor could optionally be used adjacent to the first or second or at any other point. It is also conceivable to arrange three sensors directly behind one another in the expiration or inspiration gas line or in the identical section.
  • the sensors can advantageously be designed to detect any physical measurement variables.
  • they are designed for the detection of a pressure, a volume, a speed, a temperature or a density.
  • the sensors are arranged at a relatively large distance from one another in relation to the flow path.
  • This means that the first sensor is located directly at the beginning of the inspiratory gas line within the ventilator.
  • the second sensor is then in the identical section close to the patient.
  • the third sensor is then arranged in the end area of the expiratory gas line within the ventilator.
  • changes in the gas state on the way from the first to the second or from the second to the third sensor can be monitored in an advantageous manner. For example, if speed sensors, the amount of inspiratory gas arriving in the identical section can be compared with the amount fed into the inspiratory gas line in the ventilator in known line cross sections.
  • additional sensors for example for the gas temperature, possible density differences can then also be taken into account for the volume determination. In the same way, a volume balance can be drawn up between the second and the third sensor.
  • Pressure sensors can also be used in a similar manner. With these z. B. be determined whether the pressure introduced into the inspiratory gas line within the ventilator also occurs in the identical section of the gas supply system near the patient.
  • a first sensor is designed as a pressure sensor
  • the second sensor is provided for speed determination
  • a further sensor is designed, for example, for temperature measurement.
  • different physical parameters can be recorded and evaluated at adjacent or different locations within the ventilation device. They can then be used to analyze the gases for possible changes in state or can influence the gas control via the control unit.
  • the sensors are arranged such that the data recorded by you can be evaluated by the control unit of the ventilator with regard to a possible leak in the gas supply. This can be done, for example, using the volume balance already described, according to which the amount of inspiration gas fed into the ventilator is compared with the amount of gas arriving in the identical section. If there are differences outside of an adjustable tolerance, the control unit can use this to identify a leak in the inspiratory gas line.
  • the control unit can use this to identify a leak in the inspiratory gas line.
  • suitable sensors would be arranged at the beginning and at the end of the expiratory gas line, ie in the identical section and at the expiratory gas outlet within the ventilator.
  • leak monitoring can also be carried out via a pressure control.
  • a first sensor would advantageously be arranged in the ventilator at the beginning of the inspiratory gas line.
  • a second sensor would be in the identical section and a third sensor would in turn be attached to the end of the expiratory gas line in the ventilator.
  • a possible pressure loss in the inspiratory gas line or the expiratory gas line that can be determined in this way can in turn be evaluated by the control unit as an indication of a leak.
  • the measurement result can be verified by using additional sensors. The influence of speed fluctuations or temperature changes can be taken into account when recording and evaluating the gas pressures.
  • control unit detects a leak in the gas supply in this way, it can take this leak or the amount of gas escaping into account when regulating the gas supply, so that the patient is still reliably supplied with breathing gas. For example, the amount of inspiratory gas escaping through the leak could be fed in to ensure that the patient is still cared for. At the same time, a corresponding alarm could of course be output via an optical or acoustic display unit.
  • the suitable arrangement of the sensors also enables the detection and compensation of additionally fed volume.
  • This additional volume which is not provided by the ventilator itself, can be recognized by a volume or pressure difference and also by the ventilator control unit can be compensated. In this case, for example, the amount of inspiration gas would be reduced by a suitable amount.
  • the sensors are particularly advantageously arranged when they encompass as large an area of the inspiration or expiration gas line as possible.
  • a first sensor is then particularly advantageously arranged immediately downstream of an inspiration valve, which is located in the ventilator and releases the inspiration gas into the inspiration gas line.
  • the following line is already subject to monitoring by the sensor immediately following it.
  • the second sensor should be arranged as close as possible to the patient in order to encompass as large a part of the line or lines as possible.
  • a third sensor is then arranged immediately downstream of an expiration valve in the ventilator, so that here too the largest possible part of the expiration gas line can be covered and monitored by sensors. The arrangement of the second and the second sensor then allows the detection of leaks in the inspiration line.
  • the expiratory gas line can be monitored analogously using the second and third sensors.
  • control unit is designed to check the plausibility of the measured variables of the individual sensors. Such a test can be carried out either against an absolute value stored in the control unit or against a value measured with another sensor.
  • the plausibility check is carried out in such a way that a measured value transmitted by a sensor is checked for its absolute size or its sign or also its gradient. If the measured value lies outside a range of values that can be stored in the control unit, the control unit recognizes the measured value as incorrect. In this case, the control unit will no longer take the measured value into account for its calculations. Similarly, the sign of the measured value can be monitored, so that negative pressures, for example, are excluded as unrealistic. A certain change behavior, for example a sudden drop or increase in pressure or temperature outside of a tolerance that can be stored, can result in this value not being taken further into account when regulating the gas supply. Of course, the control unit can issue a corresponding message to a display unit or in acoustic form.
  • Another possibility of the plausibility check is advantageously to compare the measured values of different sensors with one another. Sensors of the same type arranged immediately behind one another should also output approximately the same measured values. A corresponding deviation can then be recognized by the control unit as a measurement error or malfunction of a sensor.
  • the measured values of sensors can also be mutually checked for plausibility, which are located, for example, at the beginning and at the end of the inspiration or expiration gas line. An excessive deviation from comparable measured variables is also an indication of a malfunction or a leak in the gas supply.
  • a certain pressure at the inlet of the inspiratory gas line for example, also produces a pressure in the identical section which can deviate therefrom within a certain tolerance. However, if the deviation is too large, an error must also be assumed here.
  • This mutual plausibility check also applies analogously to other measured variables, such as speed, temperature, etc.
  • a plausibility check is still possible, however, taking into account different types of measured values from different sensors.
  • So z. B. the pressure measured by a sensor can be checked for plausibility on the basis of a speed measured by a second sensor. If pressure and speed, for example in the inspiratory gas line, are in a predictable or known relationship of dependency, then the two measured values must each move in a corresponding range of values in order to be realized by the control unit as realistic. to be recognized table and plausible. If several measured values are taken into account at the same time, such a plausibility check can be further specified and also optimized in terms of time.
  • control unit is also suitable for deriving the required data from the measured values of the other sensors which have not failed if one or more sensors fail. If the data of one or more sensors is recognized as not plausible, the control unit proceeds analogously. If a sensor detects several measurement variables, a failed or implausible measurement variable can also be determined from the other measurement variables of the same sensor or one or more other sensors. This advantageously results in a tolerance of the system for errors or failures of sensors. This represents a significant safety gain for the patient, since the regulation of the gas supply is maintained even in the event of sensor failure, and the supply of the patient with breathing gas is thus ensured.
  • control unit is designed such that it does not take further account of an unrealistic or incorrect measured value of a sensor when regulating the gas supply.
  • the basic gas supply is advantageously maintained.
  • FIG. 1 shows a schematic representation of the ventilation device.
  • a ventilator l is provided.
  • This respirator 1 has a control unit 5, a display unit 3 and an inspiration valve 7 and an expiration valve 8.
  • the control unit 5 controls the display unit 3 via the measurement data and other ventilation-specific parameters can be output. Data can also be entered via the display unit 3 and are transmitted to the control unit 5.
  • the control unit 5 controls the inspiration valve 7 and the expiration valve 8.
  • An inspiration gas is fed into an inspiration gas line 2 via the inspiration valve 7.
  • the direction of flow is shown by a corresponding arrow in the figure.
  • An expiration gas from an expiration gas line 4 is expanded via the expiration valve 8.
  • the direction of flow is indicated by a corresponding arrow.
  • the inspiratory gas line 2 and the expiratory gas line 4 form part of a gas supply system 11.
  • the gas supply system 11 has the task of leading breathing gases to a patient 6 and deriving them from the patient. Fresh breathing gas is supplied to the patient 6 from the inspiratory gas line 2, and exhaled gas is discharged from the patient 6 via the expiratory gas line 4.
  • the gas supply system 11 has a section 12 on the patient side in which the inspiration gas and the expiration gas are conducted in an identical line. In the identical section 12, gas is led to and from the patient. Ventilation components 10 are provided in the inspiratory gas line 2 and in the identical section 12. The respiratory components 10 are flowed through by the inspiratory gas in the inspiratory gas line.
  • the ventilation component 10 in the identical section 12 of the gas supply system 11 is flowed through by both the inspiration gas and the expiration gas.
  • These ventilation components can be, for example, bacterial filters, vaporizers, medication nebulisers, sampling units or the like.
  • Sensors 9a and 9b are provided downstream of the inspiration valve 7 and downstream of the expiration valve 8 in the ventilator 1.
  • the inspiratory gas and the expiratory gas flow through the sensors 9a and 9b, respectively.
  • Another Sensor 9c is provided in the identical section 12, this sensor 9c being traversed by both the inspiration gas and the expiration gas.
  • the sensors 9 are designed to measure the volume through which they flow.
  • the data determined by the sensors 9 are transmitted to the control unit 5 of the ventilator 1.
  • the ventilation device now works as follows:
  • the control unit 5 of the respirator 1 controls the inspiration valve 7 such that an inspiration gas can flow into the inspiration gas line 2.
  • the inspiratory gas flows through the sensor 9a and determines the volume flowing through or a corresponding measured value.
  • the inspiration gas passes through the ventilation component 10 into the gas supply system 11 and further into the identical section 12.
  • the control unit 5 compares the data transmitted to it by the sensors 9a and 9c. The volumes determined are checked for a no longer tolerable deviation.
  • control unit 5 can detect a leak in the gas supply between the sensors 9a and 9c, report it, and take it into account when regulating the inspiration valve 7 or other control elements (not shown). Analogously, the same monitoring possibility also exists in the expiration phase if, when the inspiration valve 7 is closed, the patient 6 exhales the expiration gas through the sensor 9c and the expiration gas line 4 and the opened expiration valve 8 and the sensor 9b.
  • the data transmitted from the sensors 9 to the control unit 5 and further data calculated from these can be displayed on the display unit 3.
  • the control unit 5 is designed in such a way that the measured values detected by the sensors 9 can be used in addition to the leak monitoring analysis, independently of it to control the gas supply and / or to display parameters suitable for making diagnoses and / or assessing the condition of patients ,
  • the regulation of an inspiration cycle can be carried out in such a way that the inspiration valve 7 is activated as a function of the measured values 9c, so that the amount of gas supplied to the patient is monitored close to the patient.

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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Dispositif de respiration (1) qui comporte au moins trois capteurs (9) destinés à transmettre des données physiques sur les gaz de respiration introduits dans le patient (6) et évacués de ce dernier à l'unité de commande (5) d'un appareil de respiration (1), si bien que des modifications d'état ou des différences entre des valeurs mesurées comparables peuvent donner des indications sur le comportement respiratoire du patient (6) ou sur des différences de volume possibles ou sur des fuites dans l'alimentation en gaz.
PCT/DE2002/004727 2001-12-28 2002-12-23 Dispositif de respiration WO2003055552A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10296152T DE10296152D2 (de) 2001-12-28 2002-12-23 Beatmungsvorrichtung
AU2002360922A AU2002360922A1 (en) 2001-12-28 2002-12-23 Respiratory device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10164313.6 2001-12-28
DE10164313A DE10164313A1 (de) 2001-12-28 2001-12-28 Beatmungsvorrichtung

Publications (1)

Publication Number Publication Date
WO2003055552A1 true WO2003055552A1 (fr) 2003-07-10

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ID=7711070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004727 WO2003055552A1 (fr) 2001-12-28 2002-12-23 Dispositif de respiration

Country Status (3)

Country Link
AU (1) AU2002360922A1 (fr)
DE (2) DE10164313A1 (fr)
WO (1) WO2003055552A1 (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084980A1 (fr) * 2003-03-24 2004-10-07 Weinmann Geräte für Medizin GmbH & Co. KG Procede et dispositif de detection de fuites dans des systemes d'amenee de gaz respiratoires
DE10343610A1 (de) * 2003-09-20 2005-04-28 Weinmann G Geraete Med Verfahren zur Steuerung eines Beatmungsgerätes sowie Vorrichtung zur Beatmung
WO2007068132A1 (fr) * 2005-12-16 2007-06-21 Hamilton Medical Ag Systeme de conduits flexibles pour appareils respiratoires
DE102007054390A1 (de) * 2006-11-15 2008-05-21 Weinmann Geräte für Medizin GmbH + Co. KG Verfahren zur Erfassung eines rückgeatmeten Ausatemgasvolumens in einem Beatmungssystem
EP2123320A1 (fr) * 2008-05-20 2009-11-25 General Electric Company Agencement et procédé pour superviser un moniteur médical
CN102441216A (zh) * 2010-09-13 2012-05-09 通用电气公司 麻醉系统和方法
US8267085B2 (en) 2009-03-20 2012-09-18 Nellcor Puritan Bennett Llc Leak-compensated proportional assist ventilation
US8272379B2 (en) 2008-03-31 2012-09-25 Nellcor Puritan Bennett, Llc Leak-compensated flow triggering and cycling in medical ventilators
US8418691B2 (en) 2009-03-20 2013-04-16 Covidien Lp Leak-compensated pressure regulated volume control ventilation
US8424521B2 (en) 2009-02-27 2013-04-23 Covidien Lp Leak-compensated respiratory mechanics estimation in medical ventilators
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