WO2003047672A1 - Appareil respiratoire commande par le bruit - Google Patents

Appareil respiratoire commande par le bruit Download PDF

Info

Publication number
WO2003047672A1
WO2003047672A1 PCT/DE2002/004355 DE0204355W WO03047672A1 WO 2003047672 A1 WO2003047672 A1 WO 2003047672A1 DE 0204355 W DE0204355 W DE 0204355W WO 03047672 A1 WO03047672 A1 WO 03047672A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
evaluation unit
patient
breathing
noises
Prior art date
Application number
PCT/DE2002/004355
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 DE10295574T priority Critical patent/DE10295574D2/de
Priority to AU2002351702A priority patent/AU2002351702A1/en
Publication of WO2003047672A1 publication Critical patent/WO2003047672A1/fr

Links

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
    • A61M16/0051—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

Definitions

  • the present invention relates to a noise-controlled ventilator according to the
  • Ventilators are mainly used in medical technology to artificially ventilate patients.
  • a suitably prepared inspiration gas is supplied to the patient or an expiration gas coming from the patient is removed.
  • the ventilators thus ensure an adequate supply of oxygen to the patient, for example while they are being operated on or in a coma.
  • Ventilation secretions or blood get into the patient's lungs or respiratory tract. A free breathing of the patient and the optimal oxygen supply is then not guaranteed despite artificial ventilation. Rather, such secretions have to be suctioned out at regular intervals in order to provide the patient with the best possible care.
  • a ventilation device is known from US Pat. No. 5,259,373, in which pressure fluctuations in the respiratory tract influence the amount of oxygen or the oxygen pressure supplied to the patient. In a special embodiment of this invention, such pressure fluctuations are also taken into account which
  • the object is achieved by a ventilator according to claim 1 or a method according to claim 10.
  • the invention is based on the fact that it is advantageous to monitor the respiratory tract of ventilated patients with regard to possibly clogging secretions by evaluating ventilation sounds, the monitoring being carried out essentially with
  • At least one sound pickup is provided, which is so in the
  • Breathing system of a ventilator is introduced that the breathing sounds from the lungs of a patient can be picked up unhindered.
  • an adapter arranged in the gas supply into which the sound pickup can be used if necessary.
  • the sound pickup is therefore not arranged directly on the patient's body and is arranged such that the sound picked up would have to be picked up, for example, through the patient's chest. Rather, the arrangement of the sound pickup, for example in the fresh air supply, is in direct fluid communication with the patient's respiratory system. This guarantees an optimal and genuine admission of the lung sounds.
  • the ventilator is designed according to the invention in such a way that the recorded noises are analyzed in a sound evaluation unit not only with regard to certain frequencies but also with regard to the entire sound sequences.
  • the noises are thus analyzed with regard to several features of their overall appearance, which includes the sequencing of certain tones with a certain speed and duration.
  • Noises with data stored in the sound evaluation unit which can also be generated on the basis of noises, can thus recognize a sound image which is consistent in various special features and which occurs when breathing with respiratory tract loaded with secretions.
  • the control unit usually provided in a respirator can then be controlled by the sound evaluation unit evaluating the breathing noises in order to carry out certain control functions or to output status or alarm messages. If the sound evaluation unit detects an unfavorable blockage of the respiratory tract, for example by a secretion in the lungs, on the basis of a noise detected by the sound pickup, the control unit can trigger a suitable acoustic signal in order to indicate to the operating personnel the need for secretion suction.
  • the regulation of the ventilator can also be influenced such that, for example, by a higher inspiratory pressure or a higher oxygen content can compensate for the deteriorated respiratory function.
  • the ventilator according to the invention or the correspondingly used method thus advantageously enables a change in the airway conditions of a patient to be identified on the basis of the ventilation sounds recorded via the airways through their holistic analysis.
  • the noises picked up by the sound pickup can be transmitted in analog or digital form to the sound evaluation unit and evaluated by the latter.
  • the sound evaluation unit is in particular designed in such a way that comparison data can be stored in it, which the sound evaluation unit takes into account for its analyzes.
  • This can be analog or digitally stored data, which can come from a patient himself or from one or more external sources and can be stored in the sound evaluation unit.
  • the noises caused by secretion jam or by various clinical pictures during the breathing process have characteristic sound sequences or sequences, similar to a spoken word.
  • the circuits provided in the sound evaluation unit, and in particular integrated circuits enable the sound recorded by the sound pickup to be evaluated in the sense of a speech evaluation in such a way that the complete sound image of the recorded sound is subjected to analysis and is compared with stored data.
  • the data stored in the sound evaluation unit represent the sound images that result, for example, from a certain secretion build-up, a certain illness or from any other condition of the patient during ventilation.
  • the sound evaluation unit can be designed to store several such comparison sound images.
  • Such sound images can be stored in different ways:
  • the data can be specified by an external source, in which it was created for the noise case to be recognized.
  • a source can be, for example, a database, on which previously recorded sounds that have been converted into corresponding data form can be stored and called up as a tone sequence pattern.
  • the present device advantageously enables speaker-independent or speaker-dependent analysis of the patient's condition.
  • the sound evaluation unit mainly recognizes only those noises that are caused by a certain speaker (here this is the patient).
  • the tone sequence pattern stored in the sound evaluation unit which for the
  • comparison with the respiratory sound recorded in each case shows characteristics that are typical of the particular patient.
  • tone sequence patterns can be recorded and stored by the patient himself, in order to then later compare them with the breathing noise coming from the same patient and to be monitored.
  • the sound evaluation unit can be “trained” and, in a sense, “learn” person-specific states.
  • the sound of a particular patient who has free airways can also be detected by the sound pickup and transmitted to the sound evaluation unit. This generates appropriate data from the noise for evaluation and stores this as a comparison value for this patient's sufficiently clear airways in the sound evaluation unit.
  • a breathing sound recorded by the same patient, which is recorded in the respiratory tract partially blocked by secretions, can be the same
  • the sound evaluation unit can use the stored patient-specific tone sequence pattern to detect a blockage of the airways 0 by secretions, for example, by a deviation of the current breathing noises from the stored undisturbed breathing noises or a minimum degree of correspondence between the currently recorded breathing noises and the stored ones, which are characterized by secretion congestion Tone sequence patterns is determined.
  • This patient-specific analysis can thus monitor changes in the breathing sounds of an individual patient in a very targeted manner, since the tone sequence patterns stored in the sound evaluation unit for comparison purposes also originate from the same patient. While this speaker-dependent analysis is primarily tailored to a specific patient, it is suitable for use on several different patients.
  • An advantageous embodiment of the invention accordingly provides for speaker-independent analysis of airway noise. With this method too
  • tone sequence patterns 15 of the sound evaluation unit, certain tone sequence patterns or corresponding tone sequence patterns are stored.
  • the tone sequence patterns have a certain degree of abstraction compared to the speaker-dependent tone sequence patterns so that they can be used for several different patients.
  • the focus in speaker-independent analysis could be based on tone sequences
  • the speaker-independent analysis shows a certain fuzziness for patient-specific sound characteristics.
  • this analysis method can easily be used for different patients, since it is limited to the generally typical features of a breathing noise characterized by secretion from any patient.
  • the speaker-independent analysis therefore has the advantage over the speaker-dependent analysis that it can be used immediately regardless of the patient, whereas in the speaker-dependent analysis the tone sequence pattern of the respective patient would first have to be recorded by the patient.
  • a combination of speaker-dependent and speaker-independent analysis is also conceivable. Ventilation is initially started using the speaker-independent analysis method. Based on the individual patient and depending on the patient
  • the sound sequence pattern or corresponding data to be used for the speaker-independent analysis can be stored by programming the sound evaluation unit. It is also conceivable to store characteristic sound characteristics in that a kind of mean value is formed from a sequence of individual analyzes of different patients with blocked airways, which is then stored in the sound evaluation unit as a tone sequence pattern.
  • the sound evaluation unit is designed in particular in such a way that certain noises or data generated therefrom can be stored or processed further on request.
  • a doctor who has found a secretion in the lungs of a patient can record the corresponding ventilation noise via the sound pickup and specifically as a possible tone sequence pattern in the
  • the sound evaluation unit Since this individual tone sequence pattern only has special validity for the respective patient, the sound evaluation unit is provided in such a way that individually considered tone sequence patterns can also be deleted or filtered out of the other tone sequence patterns with a broader range of application. In this way, the ventilator can begin its analysis on another patient without falsifying the evaluation by the tone sequence pattern stored by the previous patient.
  • the sound evaluation unit can be shown a specific sound recorded by the patient as a tone sequence pattern for a critical state even during the actual ventilation, even if the evaluation has not previously rated such a sound as critical.
  • the sound evaluation unit then “learns” for the future, so that a comparable sound coming again from the patient can now be recognized as critical and is incorporated into the analysis result.
  • the sound sequence pattern used for comparison purposes can be stored in the sound evaluation unit by suitable data transmission to the sound evaluation unit.
  • suitable data transmission to the sound evaluation unit For example, the transmission of corresponding data in electronic form or in the form of light signals via a suitable interface on the sound evaluation unit comes into question.
  • An operating unit arranged on the sound evaluation unit is also conceivable, via which the operating personnel can enter data directly by hand.
  • the storage of patient-specific tone sequence patterns is also conceivable in that they are recorded by the patient himself via the sound pickup and transmitted to the sound evaluation unit.
  • the sound evaluation unit recognizes whether a certain condition of the patient, in particular a possible secretion of secretions in the patient's airways, has occurred or not. If the sound evaluation unit detects such a change in state, it reports such an analysis result via suitable signals, for example to the control unit of the ventilator.
  • the control unit of the ventilator is designed such that certain functions can be triggered as a function of the signals transmitted by the sound evaluation unit. This includes, for example, an alarm that notifies the operating personnel that a secretion jam has been detected and secretion suction is required.
  • control elements for controlling the respiratory gases in such a way that the ventilation, which is partially impaired by the blocked airways, is at least temporarily compensated for by a higher gas pressure or a higher oxygen content.
  • the sound evaluation unit is designed for the analog and / or digital storage of the predefinable and / or tone sequence patterns transmitted by the sound pickup.
  • the recorded noise data can thus be called up repeatedly or further processed in terms of data technology.
  • Sound evaluation unit stores predefinable tone sequence patterns from the patient and / or from the sound evaluation unit itself and / or from an external data source generated. It is therefore possible to store the data in a flexible manner.
  • the sound evaluation unit is also designed to change or adapt data or tone sequence patterns received or already stored by the sound pickup, or to generate such data itself. This advantageously enables, for example, the adaptation of generally more valid data to a very specific patient.
  • the stored tone sequence patterns have features of typical background noises.
  • Background noises in the sense of this application are initially all noises which are recorded in or on a respiratory system by a sound pickup in addition to the breathing noises arising in the respiratory tract of a patient; they therefore superimpose the patient's pure breathing noises during ventilation.
  • Background noise can be, in particular, operating noise as caused by the
  • Switching or regulating actions of the ventilator or other medical devices can also cause noises, which are recorded by a sound sensor together with the breathing noises. Also noises from ventilation components that are flowed through during ventilation or that cooperate in some other way (e.g. evaporator, humidifier,
  • the sound evaluation unit By comparing the recorded noises with the stored tone sequence patterns generated from background noises, the sound evaluation unit eliminates the corresponding features, so that the largely pure breathing noise of the patient can be developed in the sound evaluation unit and processed further.
  • This Breathing noise which has been cleaned up from the type of extraneous noises and interfering noises, advantageously enables an improved analysis of the noises and thus also an improved detection rate.
  • Ventilator for controlling the control elements and / or for issuing alarms and / or status messages depending on the analysis result can be controlled by the sound evaluation unit.
  • the result of the analysis, which is formed in the sound evaluation unit, can thus advantageously be used to trigger further ones
  • the sound evaluation unit is connected to the control unit of the ventilator for data transmission.
  • a specific one recognized by the sound evaluation unit is connected to the control unit of the ventilator for data transmission.
  • the status can then be reported to the control unit so that it triggers an alarm, for example.
  • the event recognized by the sound evaluation unit can be transmitted to the control unit for further transmission to the operating unit of the ventilator.
  • the control unit then controls the control unit in such a way that a corresponding message, for example on an LCD display, is triggered by a suitable one
  • the signals transmitted from the sound evaluation unit to the control unit can also result in the ventilation regulation being adapted to the corresponding patient condition.
  • the sound evaluation unit is integrated in the respirator or in the control unit of the respirator. This avoids a separate unit in the treatment room and also the data and energy transmission between the sound evaluation unit and
  • a likewise advantageous embodiment of the invention has a sound source via which the noises recorded by the patient can be output.
  • the sound source can be controlled, for example, by the sound evaluation unit or the control unit of the ventilator.
  • a treating physician thus advantageously has the option of listening to the sounds recorded by the sound pickup himself and possibly several times in order to make a diagnosis or to be able to check the event signaled by the sound evaluation unit.
  • Sound evaluation unit can be stored with a tone sequence pattern, the sound of a secretion jam in a patient's airway.
  • the alignment of the features of the stored tone sequence pattern specifically to the sound of a secretion jam has the advantage that the sound evaluation unit can specifically determine such a secretion jam.
  • a secretion jam is an essential reason for temporarily switching off ventilation, since that
  • the stored tone sequence patterns can also be aligned with typical characteristics of other noises, so that certain illnesses, which can be determined by breathing noise, can be recognized by the sound evaluation unit.
  • the ventilator is advantageously designed such that the analysis result determined by the sound evaluation unit and / or suitable status messages and / or
  • Alarm messages can be output, specifically by the sound evaluation unit itself or also by the control unit of the ventilator. This enables easy knowledge of the current patient status or possible action requirements. In particular, it is also conceivable to issue a forecast as to when a possibly necessary secretion suction must be expected. Such a point in time could be determined by the sound evaluation unit or the control unit of the respirator on the basis of stored data, from which a periodic return of the secretion jam in the past can be seen. On the other hand, such a point in time could also be predicted on the basis of a recognized tendency to form or a recognized progress in the development of a secretion jam.
  • the gas supply to the patient is at least partially carried out during the recording of breathing noises
  • Control of the control elements interrupted. Since the ventilator generates noises that usually overlay the intrinsic noises that are generated by the breathing process in the lungs, the sound transducer should aim to record the pure respiratory noises as unadulterated as possible. In order not to take into account the extraneous noises caused by the ventilator, the ventilation can advantageously be interrupted.
  • This isolated noise detection can also be used particularly advantageously to pretend to the attending physician the actual airway noise. Since the duration of the noise detected without external influences is then relatively short, the sound evaluation unit or the control unit of the ventilator is advantageously designed leads to the fact that the recorded sound can be output several times in succession via a sound source.
  • a breathing noise free of extraneous noise recorded over ten milliseconds and which would be stored in the sound evaluation unit could, for example, be played three hundred times in succession to the doctor 5 on request. He could listen to the corresponding airway noise for three seconds and make or check a diagnosis.
  • the breathing noise free of extraneous noise can also be used for the analysis in the sound evaluation unit.
  • the recorded noise can also be reproduced several times for this analysis if necessary.
  • the noises distributed over an entire breathing cycle can be recorded by ventilating briefly for only short periods in certain phases of the breathing cycle.
  • the respiratory sound recorded in advance can then be reproduced and reproduced accordingly.
  • Such output is also possible without delay at the same time as the ventilation cycle in progress via a loudspeaker or headphones.
  • a patient's ventilation cycle is usually divided into four phases.
  • the breathing sounds of one of these four phases can be of particular importance for the evaluation of the noises by the sound evaluation unit or for the treating doctor.
  • the sound evaluation unit and / or the control unit of the ventilator is
  • '.5 is therefore designed in such a way that breathing noises can only be output from specifically selected ventilation phases.
  • the sound evaluation unit or the control unit of the ventilator can then operate in Output or process breath sounds recorded in the specific phase - possibly reproduced several times - separately from the breath sounds from the other ventilation phases.
  • the user can therefore advantageously choose whether the sounds of the complete breath or only the sounds of one or more of the four phases should be output.
  • the single figure shows a schematic representation of a ventilator according to the invention.
  • a respirator 1 is provided.
  • the ventilator 1 has an operating part 3, which can exchange data with a control unit 9 contained in the ventilator 1.
  • the control unit includes a display unit for displaying, among other things, ventilation parameters, alarms or also features of certain tone sequence patterns.
  • the respirator 1 also has a gas control block 11.
  • the gas control block 11 is used to process an inspiratory gas from gases that are supplied to the gas control block 11 externally.
  • 1 shows gas feeds for air and oxygen as examples.
  • the gas control block 11 has gas control elements 12.
  • the gas control elements 12 are controlled by the control unit 9 for processing the inspiratory gas. Furthermore, the gas control elements 12 can contain an inspiratory gas to be supplied to a patient 4 and an expiratory gas to be discharged from the patient 4 in terms of quantity and
  • the inspiration gas is supplied to the patient 4 via a gas supply system 2.
  • the gas supply system 2 has gas treatment components 10.
  • gas treatment component 10 includes, for example, a humidifier or a filter.
  • a sound transducer 7 is introduced into the gas supply system 2 between the gas processing components 10 and the patient 4.
  • the arrangement of the sound pickup 7 is selected such that there are no further gas processing components 10 between the sound pickup 7 and the patient 4 which could unnecessarily impede sound transmission from the patient 4 to the sound pickup 7.
  • the sound pickup 7 is connected to a sound evaluation unit 8.
  • the sound evaluation unit 8 is connected to the control unit 9 of the ventilator 1.
  • the connection between the sound pickup 7 and the sound evaluation unit 8 or between the sound evaluation unit 8 and the control unit 9 is provided for the transmission of data.
  • An inspiration gas prepared in the gas control block 11 is supplied to the patient 4 via the gas supply system 2.
  • the expired gas exhaled by the patient 4 can also be returned to the ventilator 1 via the gas supply system 2.
  • the sound pickup 7 detects breathing noises that occur at the location of the arrangement of the sound pickup 7 within the gas supply system 2.
  • the sound pickup 7 converts the detected sound into suitable data and transmits it to the sound evaluation unit 8. Alternatively, the data can also be converted in the sound evaluation unit 8.
  • the sound evaluation unit 8 compares those transmitted by the sound pickup 7
  • the sound evaluation unit 8 transmits an analysis result in signal form to the control unit 9. This is the case, for example, when part of the patient's airways 4 is blocked by a secretion and from there Breath noise results, the characteristics of which correspond to a tone sequence pattern stored in the sound evaluation unit 8.
  • the control unit 9 of the ventilator 1 can then intervene in regulating the inspiratory gas supply to the patient 4 on the basis of a predefinable function by controlling the gas regulating elements 12.
  • the signal or analysis result transmitted from the sound evaluation unit 8 to the control unit 9 can be transmitted to the control unit 3 coupled to the control unit 9 and displayed there. It is also possible to output a warning signal resulting from the analysis result.
  • a sound source 5 is connected to the ventilator 1, via which acoustic signals can be output.
  • a breathing noise processed in the sound evaluation unit 8 can be output simply or several times in succession via the sound source 5.
  • the sound evaluation unit 8 has a data interface 6, via which data, in particular about tone sequence patterns, can be fed to the sound evaluation unit 8.
  • the tone sequence pattern and the data transmitted by the sound pickup 7 can be stored or processed digitally or analogously in the sound evaluation unit 8.

Abstract

L'invention concerne un procédé permettant de détecter des états déterminés du poumon, en particulier, la présence d'accumulations de sécrétions, au moyen d'un processus de reconnaissance vocale. A cet effet, un capteur acoustique spécial (7) est introduit dans le système respiratoire. La détection de certains états déclenche des actions déterminées, par exemple, un signal d'alarme. Un contrôle simultané des signaux par un utilisateur est possible par représentation des signaux sur un afficheur, ou par sortie sur un système à casque/haut-parleur.
PCT/DE2002/004355 2001-12-04 2002-11-27 Appareil respiratoire commande par le bruit WO2003047672A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10295574T DE10295574D2 (de) 2001-12-04 2002-11-27 Geräusch-gesteuertes Beatmungsgerät
AU2002351702A AU2002351702A1 (en) 2001-12-04 2002-11-27 Noise-controlled breathing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159384.8 2001-12-04
DE10159384A DE10159384A1 (de) 2001-12-04 2001-12-04 Geräuschgesteuertes Beatmungsgerät

Publications (1)

Publication Number Publication Date
WO2003047672A1 true WO2003047672A1 (fr) 2003-06-12

Family

ID=7707892

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004355 WO2003047672A1 (fr) 2001-12-04 2002-11-27 Appareil respiratoire commande par le bruit

Country Status (3)

Country Link
AU (1) AU2002351702A1 (fr)
DE (2) DE10159384A1 (fr)
WO (1) WO2003047672A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053109A1 (de) 2005-11-04 2007-05-10 Koehler, Ullrich, Prof. Dr. Körpergeräusch-Feststellung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337061A1 (de) * 1973-07-20 1975-02-06 Erich Jaeger Geraet zur pulmonalen ueberwachung eines bettlaegerigen patienten
WO1986005965A1 (fr) * 1985-04-10 1986-10-23 Emergent Technology Corporation Procede et moniteur de ventilation a canaux multiples
WO1995028193A1 (fr) * 1994-04-19 1995-10-26 Boesherz Jakob Respirateur s'utilisant notamment dans le traitement des insuffisances respiratoires, et son procede de fonctionnement
US6168568B1 (en) * 1996-10-04 2001-01-02 Karmel Medical Acoustic Technologies Ltd. Phonopneumograph system
DE10014427A1 (de) * 2000-03-24 2001-10-04 Weinmann G Geraete Med Verfahren zur Steuerung eines Beatmungsgerätes sowie Vorrichtung zur Überwachung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337061A1 (de) * 1973-07-20 1975-02-06 Erich Jaeger Geraet zur pulmonalen ueberwachung eines bettlaegerigen patienten
WO1986005965A1 (fr) * 1985-04-10 1986-10-23 Emergent Technology Corporation Procede et moniteur de ventilation a canaux multiples
WO1995028193A1 (fr) * 1994-04-19 1995-10-26 Boesherz Jakob Respirateur s'utilisant notamment dans le traitement des insuffisances respiratoires, et son procede de fonctionnement
US6168568B1 (en) * 1996-10-04 2001-01-02 Karmel Medical Acoustic Technologies Ltd. Phonopneumograph system
DE10014427A1 (de) * 2000-03-24 2001-10-04 Weinmann G Geraete Med Verfahren zur Steuerung eines Beatmungsgerätes sowie Vorrichtung zur Überwachung

Also Published As

Publication number Publication date
AU2002351702A1 (en) 2003-06-17
DE10295574D2 (de) 2004-10-28
DE10159384A1 (de) 2003-06-12

Similar Documents

Publication Publication Date Title
EP1136094B1 (fr) Appareil de ventilation artificielle avec un dispositif de surveillance
DE102006052572B3 (de) Verfahren und Beatmungseinrichtung zur druckunterstützten Spontanatmung
EP1850898B1 (fr) Dispositif de ventilation
DE69731899T2 (de) Vorrichtung zum optimieren des kontinuierlichen positiven luftwegdrucks zum behandeln des atemstillstandes im schlaf bei verlegten atemwegen
DE69533708T2 (de) System für die Optiemierung des kontinuierlichen, positiven Atemwegdrucks zur Behandlung des Atemstillstandes im Schlaf bei verlegten Atemwegen
WO2004105846A2 (fr) Dispositif de commande d'un appareil anti-ronflement et appareil anti-ronflement par ex. destine a la therapie de bpco
DE10031079A1 (de) Vorrichtung zur Erfassung der Atmungsstätigkeit einer Person sowie Vorrichtung zur Vorgabe physikalischer Parameter bei der Zufuhr eines Atemgases
DE102006018198A1 (de) Verfahren und Vorrichtung zur Lungenventilation
DE19961206A1 (de) Atemzugsvolumenabhängige Gasdosierung
EP3423136B1 (fr) Dispositif de ventilation d'un patient
DE102009025967A1 (de) System und Verfahren zur intelligenten Verabreichung von Back-up-Beatmung
DE102018000741A1 (de) Beatmungsgerät mit Synchronitätsindex
WO2005099799A1 (fr) Equipement de ventilation et procede correspondant destines a la ventilation d'un patient
DE102010010248A1 (de) Beatmungsverfahren und Beatmungsgerät
DE102007033047A1 (de) Vorrichtung und Verfahren zur Erkennung von obstruktiven Ereignissen
DE102016013138B4 (de) Medizintechnische Vorrichtung und Verfahren zur Bestimmung von Betriebssituationen bei einer medizintechnischen Vorrichtung
DE102015009056A1 (de) Beatmungsgerät und Verfahren für ein Beatmungsgerät
EP3260154A1 (fr) Respirateur et procédé
WO2003047672A1 (fr) Appareil respiratoire commande par le bruit
EP1371384A1 (fr) Un procédé pour contrôller un respirateur et un respirateur controllable
DE602004003409T2 (de) Gerät zur Bestimmung von Absaugdurchfluss und Absaugzeit und zur Absaugung von Totraum
EP1796766B1 (fr) Dispositif respiratoire
EP3957347A1 (fr) Respirateur pour l'oxygénothérapie à débit élevé
EP2644220B1 (fr) Dispositif destinés à l'hyperinsufflation
EP1518579B1 (fr) Appareil respiratoire

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
REF Corresponds to

Ref document number: 10295574

Country of ref document: DE

Date of ref document: 20041028

Kind code of ref document: P

WWE Wipo information: entry into national phase

Ref document number: 10295574

Country of ref document: DE

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Ref document number: JP