WO2015189275A1 - Device for assisting rescue staff in performing a cardiopulmonary resuscitation - Google Patents

Device for assisting rescue staff in performing a cardiopulmonary resuscitation

Info

Publication number
WO2015189275A1
WO2015189275A1 PCT/EP2015/062949 EP2015062949W WO2015189275A1 WO 2015189275 A1 WO2015189275 A1 WO 2015189275A1 EP 2015062949 W EP2015062949 W EP 2015062949W WO 2015189275 A1 WO2015189275 A1 WO 2015189275A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
sensor
device
unit
strain
element
Prior art date
Application number
PCT/EP2015/062949
Other languages
German (de)
French (fr)
Inventor
Martial Desiré Fotso
Ziad Mabrouk
WAGNER Gero VON
Original Assignee
Metrax Gmbh
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

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • A61H31/004Heart stimulation
    • A61H31/005Heart stimulation with feedback for the user
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • A61H31/004Heart stimulation
    • A61H31/007Manual driven
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/02Details
    • A61N1/04Electrodes
    • A61N1/0404Electrodes for external use
    • A61N1/0408Use-related aspects
    • A61N1/046Specially adapted for shock therapy, e.g. defibrillation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/02Details
    • A61N1/04Electrodes
    • A61N1/0404Electrodes for external use
    • A61N1/0472Structure-related aspects
    • A61N1/0492Patch electrodes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/38Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39Heart defibrillators
    • A61N1/3968Constructional arrangements, e.g. casings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • A61H2031/002Artificial respiration or heart stimulation fixed on the chest by adhesives
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5058Sensors or detectors
    • A61H2201/5061Force sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5058Sensors or detectors
    • A61H2201/5064Position sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5058Sensors or detectors
    • A61H2201/5069Angle sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50Control means thereof
    • A61H2201/5058Sensors or detectors
    • A61H2201/5071Pressure sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2230/00Measuring physical parameters of the user
    • A61H2230/20Blood composition characteristics
    • A61H2230/205Blood composition characteristics partial CO2-value
    • A61H2230/206Blood composition characteristics partial CO2-value used as a control parameter for the apparatus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2230/00Measuring physical parameters of the user
    • A61H2230/20Blood composition characteristics
    • A61H2230/207Blood composition characteristics partial O2-value
    • A61H2230/208Blood composition characteristics partial O2-value used as a control parameter for the apparatus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2230/00Measuring physical parameters of the user
    • A61H2230/25Blood flowrate, e.g. by Doppler effect
    • A61H2230/255Blood flowrate, e.g. by Doppler effect used as a control parameter for the apparatus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2230/00Measuring physical parameters of the user
    • A61H2230/40Respiratory characteristics
    • A61H2230/405Respiratory characteristics used as a control parameter for the apparatus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2230/00Measuring physical parameters of the user
    • A61H2230/65Impedance, e.g. skin conductivity; capacitance, e.g. galvanic skin response [GSR]
    • A61H2230/655Impedance, e.g. skin conductivity; capacitance, e.g. galvanic skin response [GSR] used as a control parameter for the apparatus

Abstract

The invention relates to a device for assisting rescue staff in performing a cardiopulmonary resuscitation, comprising a monitoring apparatus for the cardiac massage, which has at least one sensor unit (1) for application of pressure and one processing device (2) for sensor signals fed thereto. Advantages for the design and function emerge by virtue of the fact that the sensor unit (1) comprises at least one strain sensor element (10) made of a material that changes the electrical properties thereof when strained and it is provided with a holding device by means of which the at least one strain sensor element (10) is fixable in relation to the chest of the person to be saved in such a way that the at least one strain sensor element (10) is deformed synchronously with the application of pressure and the sensor signal is formed thereby.

Description

Apparatus for assisting rescue personnel when performing a cardiopulmonary resuscitation

The invention relates to a device for supporting the rescue personnel, such as trained personnel, or z. B. a layman as a rescuer in performing a cardiopulmonary resuscitation with a monitoring device for the cardiac massage, which comprises at least a sensor unit for the printing operation and a processing device for supplied thereto sensor signals. A device of this kind is disclosed in US 2008/0171311 A1. In this known device, the implementation of a cardiopulmonary resuscitation is monitored by a monitoring device for the cardiac massage, which has a sensor unit and a processing unit for the sensor signals. The sensor unit includes a pressure massage sensors for detecting various parameters of the heart and of patient information. The information may include the compression depth, compression rate, pressure, angle, heart pulse rate of the patient, hand position, body temperature, body characteristics of the patient and the oxygen concentration of the patient, pressure sensors, position sensors, physiologic sensors, and motion sensors can be distinguished. The pressure sensors that can be configured for detecting the compression rate, and for providing information about the compressions for the rescuer are mounted either in a glove of the rescue person or the patient's body. The pressure sensors are based for example on the piezolektrischen effect, wherein the electrical resistance of the pressure sensor changes, or properties on capacitive egg. A possible embodiment of the pressure sensor includes sensor components that may be embedded in the article itself to be supported, such as woven conductive or non-conductive yarns whose capacitance changes when exerting a compression. As another type of pressure sensor, a gauge is called. In connection with positionable on the patient sen- sors also are Velcro (registered trademark) bands called. Specifically, it is difficult to obtain accurate and reliable detection of signals at the printing operation.

Another device for assisting rescue personnel in implementing tion of cardiopulmonary resuscitation is shown in US 2008/0312565 A1. This device comprises a so-called CPR sensor (sensor for cardiac resuscitation), which has a thin, flexible support on which one or more sensor arrays, a power source, an output interface and a processor or analog circuit are applied. The sensor arrays are formed as so-called MEMS (microelectromechanical systems). The flexible substrate can be made stretchable. By means of the sensor array can print parameters, namely the pressure depth, compression force, pressure and pressure frequency acceleration are detected in order based on which the rescuer (helper) avoiding a return to give about the success of the performed chest compressions. A reliable determination of printing parameters when chest compressions, however, is difficult and still subject to relatively large uncertainties, but then important for the success of resuscitation.

Various other devices for supporting the rescue personnel in performing a cardiopulmonary resuscitation are, for example, in US 2012/0089055 A1, EP 1491176 B1, WO 2013/044226 shown the A6 and the DE 10 2007 014 136 A1.

When chest compressions exceeding a minimum force and a minimum are least compression depth in the printing operation essential parameters and also an evaluation of the direction of the force in the cardiac massage has significant importance as it provides valuable clues for assessing the effectiveness of chest compressions. A corresponding feedback provides the helper a check on how well he is able to take in the printing operation, the applied on the heel of the hand force perpendicular to the thorax of the patient. Therefore, it is also desirable to determine the angle at which the force is applied in the cardiac massage on the pressure point. Also provides for the Herzdruckmas- say one of the important cardiopulmonary resuscitation parameters (CPR parameters or CPR parameters) are correctly relieved of the chest, to make sure that a sufficient filling of the heart with blood and subsequently a sufficient cardiac output can be achieved. Therefore, the detection of the correct chest recoil when compressions a quality of cardiopulmonary resuscitation. Also, the detection of a phase in which the hands of no more pressure exercise (so-called hands-off time), in so no chest compressions takes place, a quality of the heart-lung's revival. Since this time must be kept as short as possible, the most accurate detection of the start of the hands-off time is also important.

The present invention has for its object to provide a device for assisting rescue personnel in performing cardiopulmonary resuscitation ready with the increased efficiency of cardiopulmonary resuscitation can be achieved.

This object is achieved with the features of claim 1. It is provided that the sensor unit at least one strain sensor element consists of a its electrical properties upon stretching comprises changing material and is provided with a holding device, by means of which the at least one strain sensor element with respect to the breast of the person to be rescued in a manner fixed to the at least one strain sensor element is deformed in synchronism with the printing operation and thus the sensor signal is formed.

With these measures advantageous detection possibilities for implementing a cardiac massage are offered, wherein the sensor unit with the at least one strain sensor element, in particular at least one elastomer sensor element, an advantageous signal detection possible. This also advantageous adaptation possibilities to different requirements. An advantageous mode of operation is obtained in that the at least one strain sensor element is fixed in the manner with respect to the chest, it synchronously extended with the pressing operation or relieved. Hands no more pressure exercise (so-called hands-off time), in so there is no chest compressions, is a quality of the heart-lung resuscitation. Since this time must be kept as short as possible, the most accurate detection of the start of the hands-off time is also important.

The present invention has for its object to provide a device for assisting rescue personnel in performing cardiopulmonary resuscitation ready with the increased efficiency of cardiopulmonary resuscitation can be achieved.

This object is achieved with the features of claim 1. It is provided that the sensor unit at least one strain sensor element consists of a its electrical properties upon stretching comprises changing material and is provided with a holding device, by means of which the at least one strain sensor element with respect to the breast of the person to be rescued in a manner fixed to the at least one strain sensor element is deformed in synchronism with the printing operation and thus the sensor signal is formed.

With these measures advantageous detection possibilities for implementing a cardiac massage are offered, wherein the sensor unit with the at least one strain sensor element, in particular at least one elastomer sensor element, an advantageous signal detection possible. This also advantageous adaptation possibilities to different requirements. An advantageous mode of operation is obtained in that the at least one strain sensor element is fixed in the manner with respect to the chest, it synchronously extended with the pressing operation or relieved. Another advantageous configuration for signal detection is that the strain sensor element is mechanically biased in its starting position.

To a reliable function, the measures contribute, that the sensor unit to generate electric power even in the printing operation and is ready for use without additional voltage supply or that the sensor unit from the outside is supplied via radio-frequency energy pulse packets.

Advantageous embodiments further consist therein that the sensor unit is designed as a pressure sensor, force sensor, position sensor or angle sensor. For example, can be monitored with the function of an angle sensor that the helper uses its power efficiently.

An advantageous for the function of training is that a change in capacitance caused by the deformation of the at least one strain sensor element, through which the sensor signal is formed.

For the structure and function are also the measures of advantage that the formed at least one strain sensor element made of an elastomeric film, and coated on one or both sides with flexible electrodes.

Various advantageous embodiments of the device can be obtained in that the processing device for determining the degree of pressure actuation from the strength, the frequency and / or phase of the sensor signal or the change is formed of at least one of these quantities. Further advantageous measures for the structure and function of the device consist in that the processing device is formed of the repetition of the same strength, frequency and / or phase of the sensor signal to determine the frequency of the pressure actuation.

Further advantageous design variants arise from the fact that the extent of the pressing operation includes the printing depth, the compressive force, the speed of pushing and / or relieving, the pause time or a combination of at least two of these parameters.

arise also for the function and the structure advantageous embodiments characterized in that the holding device at least one holding part and two mounted spaced apart on the respective strain sensor element, or having attachable fixing units, between which an elastic portion of the loading encountered strain sensor element extends, wherein the respective strain sensor element of a fixing agent on the associated holding part and by means of other fixing agent is attached to a pressure in the actuator relative to the holding member away from and towards the latter in relieving moving body with the aid. Thereby, contributes to an advantageous function in that the moving body is in the printing operation by the manual force acting on the chest of the person to be rescued actuating part.

Various further advantageous embodiment variants arise from the fact that the holding part is attached to the breast fixing piece or attached to a support body holding member. Also, the actions that the processor device is arranged to determine the pressure depth as a function of the changing in the printing operation the angle between the extending in the direction of gravity vertical and the extent of the strain sensor element at a known or detected length of the same, advantageously contribute to the function of the device. Here, a constant horizontal distance between the fixing points of the strain sensor element may be included.

Differentiated assessment facility for the execution of the printing operation ER- give the fact that the sensor unit comprises a plurality of strain sensor elements and a plurality of these respective associated holding parts or their common holding part and that all the strain sensor elements at a distance from the or the holding parts are attached to the moving body. Another for the structure and function of advantageous measure consists in that the common holding member is constructed as a retaining ring.

To an advantageous signal detection measures contribute to a sensor arrangement zusammenhängen- from a planar (two-dimensional in one plane) the strain sensor element or is extended from a plurality of strain sensor elements as the sensor array in a xy-direction and continuously along its peripheral edge by means of a fixing unit or individual fixing points is attached to the then formed circumferentially holding part and that the moving body is mounted by means of the other fixing unit in the central region of the sensor arrangement. For a more sophisticated evaluation of this, the measures of advantage that the capacity of the individual strain sensing elements of the sensor arrangement are recognized by means of the processing device through the sensor signals and included in the evaluation.

The reliability of the signal processing can be increased by the fact that the sensor unit is formed so that at least one strain sensor element transversely to the longitudinal extension of the person to be rescued by the breast can be laid and the change of the respiratory muscles of the chest by elongation change of at least one strain sensor element in breathing by the processing device can be detected and incorporable in the evaluation to determine the pressure depth and / or the printing frequency. As far as the activity of the respiratory muscles is detected, conclusions about the efficiency of the ventilator can be drawn. In general, the change in circumference of the chest can be determined and correlated with the depth pressure in this arrangement.

An advantageous for the printing operation by the helper and the derivative signal training is that the sensor unit of the at least one strain sensor element is provided with a protective insulating layer at least in the area.

Various advantageous output signals for the user guidance and / or control of a defibrillator device can be obtained in that in the processing device at least one threshold value is predefined, with which the transmitter is sorsignal compared, and that by means of the processing device from the comparison result of the start of printing, a minimum pressure depth , a maximum print depth and / or complete relief in the printing operation can be determined / are. A further advantageous embodiment of the structure and function of results from the fact that the sensor unit has at least one switching stage for providing at least a threshold value for start of printing, a minimum pressure depth a maxi- mum pressure depth and / or complete relief at the pressing operation.

Another of the function and signal generation advantageous embodiment consists in that in a receiving unit of the sensor unit at least one strain sensor element is held under prestress and that the receiving unit is designed such that the at least one strain sensor element is released when pressure is applied.

To a reliable signal evaluation measures contribute to min- least comprises a further detection unit for detecting the respiratory activity, respiratory gases, blood flow, oxygen saturation or carbon dioxide enrichment of the blood, the volume pulse and / or a body impedance of the person to be rescued is formed, and that the detection signals of the at least one further acquisition unit of the processing apparatus during operation can be evaluated and fed by the latter.

For the user interface is advantageously provided that the device has a controlled by the processing apparatus display device having an optical display unit and / or acoustic output unit, by which the Herzdruckmas- say exerting rescuer on pressure actuation to be informed. In the context of cardiopulmonary resuscitation measures are further measures of advantage that the device comprises a defibrillator device, which is associated with the processing device in signal communication or can be brought to tune the release of a defibrillation shock ge to the Herzdruckmassa-.

It is advantageous for the efficiency of CPR that a trigger point for the triggering of a defibrillation shock is adjusted via the processing means to the sensor signal in the printing operation that the shock delivery takes place when the chest during a print cycle maximum compression or maximum relieved.

Advantages for the construction and the operation are obtained in that at least one strain sensor element is integrated into at least one defibrillation electrode.

To a reliable signal evaluation measures contribute that the device comprises a selection device for an adjustment to the body height, body weight, age and / or sex of the person to be rescued up, the setting selected in the evaluation by the processing device included becomes.

The reliability of the evaluation can also be supported in that it is provided with an additional pressure sensing unit comprising an entrapped in a closed volume of fluid. This makes for can. For example, the pressure relief advantageously be detected. Various advantageous embodiment variants are that which is formed at least one strain sensor element as an elastomer film, piezo-film strain gauges or Potentiometerfolie. The invention is explained below by means of embodiments with reference to the drawings. Show it:

Fig. 1 is a schematic view of an apparatus for supporting the rescue personnel in performing a cardiac resuscitation, which is associated with a person to be rescued,

Fig. 2 shows an embodiment of a usable in the apparatus of Fig. 1 strain sensor element in a schematic view,

Fig. 3 shows an embodiment for a usable in the apparatus of Fig. 1 sensor unit,

FIGS. 4A and 4B

two further embodiments in the apparatus of

Fig. 1 usable sensor units,

Fig. 5 shows another embodiment of a of a to be rescued

Person attached device to support the rescuer in performing a cardiopulmonary resuscitation comprising a defibrillator device, another embodiment of a connected to a person to be rescued device for assisting a rescuer in performing a cardiac resuscitation, and a graphical representation to the procedure for the determination of a printing depth, a schematic representation of another embodiment of a sensor unit with assignment to a person to be rescued, wherein a in an xy plane (horizontal plane) is used stretchable planar strain sensor element, a schematic representation of a further exemplary embodiment of a sensor unit having a plurality arranged in different directions of the x-y plane strain sensor elements, a further embodiment of a sensor unit mitmeh- reren in different directions the xy plane ang eordneten strain sensor elements, a further embodiment of a an associated person to be rescued device for assisting the rescuer in performing a cardiopulmonary resuscitation, and a sensor unit used therein in plan view and front view, another embodiment of a voltage applied to a person to be rescued sensor unit, wherein two strain sensor elements in the transverse direction are arranged on the chest, in a schematic view, another embodiment of a sensor unit, which is arranged on an insulating mat and is associated with a display unit, another embodiment of a voltage applied to a person to be rescued sensor unit, another embodiment of a connected to a person to be rescued device for assisting the rescuer in performing a cardiopulmonary resuscitation as well as two different views of arranging a Sensor unit of the device in the chest region of the person to be rescued, Fig. 13 shows a further embodiment for a to be rescued at a

Person attached device to support the rescuer in performing a cardiopulmonary resuscitation, and a separate view of the sensor unit used therein,

Fig. 14 shows an embodiment of a usable in the apparatus display unit in a schematic view and Fig. 15A, 15B and 15C

various display situations of a portion of the display unit of Fig. 14 when carrying out a heart massage.

Fig. 1 shows a device for supporting the rescue personnel in performing a cardiopulmonary resuscitation (CPR) to the arrangement of a sensor unit 1 on the chest of a patient. The sensor unit 1 is connected via a connecting cable 21 for data transmission of sensor signals to a processing device 2 brillatoreinheit in the shown embodiment with a Defi- 20 such. B. an automatic external defibrillator device (AED), in a casing thereof is brought together. The processing device 2 or parts thereof may / may instead spatially z. For example, be arranged in the region of the sensor unit 1, in particular of the operating member. 3

Of the sensor unit 1 detected at the pressure massage sensor signals from the processing device 2 are supplied to and processed and evaluated to provide appropriate output signals to provide information to a printing operation executing rescue person (helper) on the quality of chest compressions and / or the triggering of a defibrillation shock via the defibrillator unit to control a function of the cardiac massage 20th

Via the connection cable 21 and a power supply of the sensor unit 1 can be made instead of or in addition to data transmission. The device can be designed for bidirectional data transmission, for example, a control arranged in the region of the sensor unit 1 or in this integrated display unit to the information of the helper. The information can be output visually on the display unit and / or acoustically, wherein the electro-acoustic converters for sound output (voice and / or other acoustic signals) in the region of the sensor unit 1 or z. B. is arranged in the region of the defibrillator unit 20th

In an alternative embodiment, the data transmission may be performed wirelessly, the device can be designed also for unidirectional signal or data transmission between the sensor unit 1 and the processing apparatus 2 or for the bidirectional transmission.

In a further embodiment variant, an energy source for supplying the sensor unit 1 in the region of which may be disposed such. , A battery, a storage battery or other energy storage device, such as capacitor or an inductively operating unit. Since the sensor unit 1 is advantageously carried out under a low energy consumption, it can be equipped or connected with a power generation unit that z. B. the energy generated by the pushing operation into electrical energy and to supply provides (energy harvesting). Particularly in the case of wireless connection between the sensor unit and processing device 2, a high-frequency energy input via pulse packets is a possible variant embodiment.

The sensor unit 1 comprises at least one strain sensor element 10, which is executed in the embodiment of FIG. 1 as a foil strip which extends between an actuating member 3 and an attachment piece 11 on the chest person to be rescued in the longitudinal direction thereof. The actuating part 3 serves as an intermediary between the pressure-exerting hand of the helper and the pressure bearing part of the chest, which is an efficient printing operation over the sternum. The actuating member 3 forms a movable body in th cardiac massage and is advantageous as adapted to the hand pressure pad, z. B. designed as a pressure pad. The fixing piece 11 is z. B. fixed in the region of the neck and clavicle on the chest by gluing and the strain sensor element 10 is fixed with its end-side portions on the one hand on the actuating part 3 and on the other hand to the attachment pieces 11 such. B. at by means of an adhesive joint, weld joint, by sewing or stable Velcro connection, clip connection, clamp connection or the like .. By vertically (in the z direction, with respect. Of the body from front to back or perpendicular to the plane of the drawing in Fig. 1) of the pressurization taking place chest movement in the region of the printing point is stretched, the strain sensor element 10 and generates an electrical signal, for example by a change in capacitance of the strain sensor element 10th

The change in capacitance can be detected for example via a change caused by it in amplitude, frequency and / or phase of a voltage applied to the strain sensor element 10, AC voltage, which is expressed in the sensor signal. The strain sensor element 10 is advantageous z. B. made from an elastomer foil. The elastomeric film is provided on one or both sides with electrodes, which are preferably formed as a thin, highly flexible layer. Between the electrodes a changing by stretching and the thus caused change in capacitance voltage signal can be tapped to form the sensor signal. The range of elastomeric film forms a dielectric.

Alternatively, the strain sensor element 10 as a piezoelectric film, or lie Dehnmessstreifenfo- Potentiometerfolie may be formed, which can be produced varying voltage signals also during deformation, in particular stretching. Fig. 2 shows an exemplary embodiment of a strip-shaped strain sensor element 10, for example of elastomeric material, having a sensor portion 100 in the central region, extending between two end side portions of the one hundred and first The sensor section 100 forms the appealing at the strain range for the ER- generating the sensor signal, while the side portions 101 serve for attachment to the respective mounting locations whose distance synchronously changes with the cardiac massage with the pressing operation and thus leads to a change in the sensor signal, is evaluated by means of the processing apparatus. 2 In an example shown in Fig. 3 another embodiment of a sensor unit 1, a fixing device 4 for attaching the sensor unit 1 on the chest of a person to be rescued is present, the a in the area of ​​the clavicle of the person to be rescued fixable by gluing large-surface holding portion 40 at the one end portion comprising the strain sensor element 10th The other end portion of the strain sensor element 10 is connected by a connecting means 41 with the operating member 3 in the form of a pad-like platen 30th The pressure pad 30 is in turn provided on its underside with an adhesive surface 31, to fix them in the field of printing position on the chest. the adhesive surfaces of the holding member 40 and the platen 30 are preferably covered with a protective film abziehba- ren before use. The sensor unit 1 including any of the holding part 40 or the like., Or even the strain sensor element 10 can / can be designed for single or multiple use.

In the example shown in Fig. 4A another embodiment of a sensor unit 1 is a strain sensor element 10 also between a fixable in the upper region of the person to be rescued the chest by gluing holding part 40 and a can be arranged in the region of the printing point operating section 3, in particular a likewise fixable by gluing platen 30, positioned and fixed with its end-side portions of the holding member 40 on the one hand and the securing device 3 on the other. To the platen 30, a display unit 5 joins to the upper chest area down, which is arranged on a contiguous with the operating section 3 flat support. The helper can thus be advantageously displayed in its viewing area information about the quality of chest compressions. In the lower chest area an arrow provided with a tongue-like handle portion is mounted to pull the sensor unit 1 with the strain sensor element 10 when mounting in the correct position on the chest. On the upper side of the holding portion 40, the correct positioning of the sensor inputs is graphically depicted on the front unit 1 pictogram-like manner.

In the example shown in Fig. 4B embodiment, compared to FIG. 4A, the display unit 5 is integrated into the holding member 40, whereby the displayed information also can be seen during cardiac compressions well of the rescue person.

Fig. 5 shows the arrangement of a sensor unit 1 having a similar structure as shown in Figs. 4A and 4B when placed on the chest of a person to be rescued, and with a connection to a processing device 2 in combination with a Defi- brillatoreinheit 20. The processing apparatus 2 and the defibrillator unit 20 loading sit a common, easy to handle housing. The defibrillator unit 20 is part of a defibrillator device including on the chest of the arranged person to be rescued at appropriate locations defibrillator electrodes 22 which of the connected person to be rescued with a defibrillation shock via respective connecting cables 21 to the defibrillator unit 20 for charging. The defibrillator gate electrodes 22 can also be also used for the derivation of measurement signals to control the defibrillation shock appropriate. Because the processing apparatus is brought 2 with the defibrillator unit 20 in electrical signal or data exchange connection, the initiation of the defibrillation shock can be optimally adapted to the chest compressions, at a suitable time of shock delivery and an adapted control of the shock energy in the context of cardiopulmonary resuscitation measures to effect. For example, the shock delivery can be done in a moment, is compressed when the chest maximum of, because in this situation, the lung is also compressed and the defibrillation current can flow through the heart optimally without too high energy must be applied. Alternatively, the moment of maximum or near maximum relaxation for the choice of shock delivery can be beneficial. Conversely, an optionally relektroden of the defibrillators information 22 obtained may be included in the assessment of the effectiveness of chest compressions and the displayed information the helper considered.

In a further in FIGS. 6A and 6B Embodiment 1, the sensor unit is a supported on the shoulders of the person to be rescued supporting device 12 having an upwardly projecting column-like support body, which may be pulled out telescopically, and at the upper end portion of a strain sensor element 10 by means of a is fixed holding part 40th The other end portion of the strain sensor element 10 is in turn fi xed on the actuating part. 3 As shown in Fig. 6B seen, the pressure depth from the difference between a vertical end position H2 at maximum pressure and a starting position H1 at a defined start of printing can be determined, wherein the output layer of the case present length L1 and thereby present angle phil relative to the vertical ( gravity direction) and the final position H2 from the present case length L2 and the angle phi2 of the strain sensor element 10 relative to the vertical can be determined. The respective length L1, L2 is given by the elongation of the strain sensor element 10 and the respective angle phil, phi2 z can. B. be detected by an angle detector. As additional information, the well-known horizontal distance between the attachment points on the holding part 40 and the operating section 3 can be used. FIGS. 7A, 7B and 7C show further variants of embodiment of the sensor unit 1. This is common that they are having an areally expanded in the horizontal XY-plane sensor arrangement and can therefore be also used for detecting parameters of the position and / or components of motion in the xy direction depend such. B. an inaccurate positioning of the pressure point in the xy plane or a direction deviating from the vertical direction of the pressing force. Since the effectiveness of chest compressions is greatest when the helper, the applied on the heel of the hand force initiates perpendicular to the thorax person to be rescued, is the capture and display of angular deviation from vertical for him important information. Also, the a provide additional information, to analyze the sensor signals in the processing device 2 in greater detail with respect to other parameters such as pressure force and pressure depth different expansion in the xy-direction-dependent sensor signals. In the examples shown in FIGS. 7A, 7B and 7C embodiments is centrally located in the region of the two-dimensionally extended in the xy direction strain sensor element 10 and a plurality of stripe-like strain sensor elements 10, an operating section 3 particularly in the form of a pressure pad 30 is disposed and outer in the radial distance from this edge region a holding member in the form of a circumferential Hal- terings 112 on which the side facing away from the center of the ends, or the strain sensor elements are attached 10th The sensor unit 1 can be combined with the retaining ring 112 easily move on the chest of the person to be rescued, wherein said central portion is to be arranged with the operating section 3 just above the optimum pressure point on the breast. While the Fig. 7A an embodiment of the sensor unit 1 with a two-dimensionally extended within the retaining ring 112 contiguous strain sensor element 10 is, in the exemplary embodiment of FIG. 7B four mutually perpendicular oriented strip-shaped Dehnungssensorele- elements 10 also in different numbers between the actuation part 3 and the retaining ring 12, and eight strip-shaped strain sensor elements are arranged in the embodiment according to Fig. 7C 10 at an angle of 45 ° to each other. Other similar planar arrays of strain sensor elements 10 in different numbers are possible. Due to the structuring of strip-like strain sensor elements 10 in the two-dimensional Ar- rays whose capacity can be located separately measured and thus differentiates the deformation or the force acting on individual electrode arrays.

Also, in the example shown in Fig. 8 another embodiment of the sensor unit 1, a plurality of strain sensor elements 10, arranged two-dimensionally, for example on the basis of elastomeric strips in the xy plane. Here, 10 extend individual strip-shaped strain sensor elements between a centrally arranged fastening device or an operating portion 3 and a surrounding holding member, which is also formed as a rigid retaining ring 112, or at least comprises such. The attachment device is embodied as a fixed inner body 1 13 and includes such. The strip-like strain sensor elements 10 are the ends on the other hand fixed to the retaining ring 112 so that they 3 applied pressure and thereby bewirkter motion are stretched in the operating member and cause a consequent change in signal on the one hand to the fixed inner body 13 and. the strain sensor elements 10 are advantageously by means of a protective film 102 z. B. covered from a textile or other insulating laminate material. In an embodiment shown in Fig. 9 further embodiment, two strip-shaped strain sensor elements 10 with its one end portion on the centrally arranged operating member 3 such. B. a platen 30 is attached, extend to side across the chest, and are in the side area of ​​the breast or of the person to be rescued is fixed with its other end portion in the back area. With this arrangement, the strain sensor elements 10, in particular on the basis of strip-shaped elastomeric films, the change of the respiratory muscles of the chest z can. B. be detected to determine the depth of compression and the compression frequency. By changing the volume of air in the lungs during Herzdruckmas- say that will change on the strain sensor elements 10 received sensor signal, for example due to a change in capacitance and the change of the sensor signal is a measure, for example, the compression depth or compression rate. Similar arrangements as shown in FIG. 9 show the embodiments of the sensor unit illustrated in FIGS. 1 1 and 12 1. Also in this case run two strip-shaped strain sensor elements 10 across the chest of the person to be rescued, and are with its one end portion on said central actuating member 3 and fixed with its other end portion on the side holding parts 40th Furthermore, they are covered with a protective film 102nd

Fig. 10 shows an insulating mat 6 via which a helper opposite the body which is electrically insulated person to be rescued in order not to endanger him shocks following the triggering of defibrillation. This can be avoided unnecessary waiting time before the triggering of a defibrillation shock. On the insulating web 6, a strain sensor element 10 is arranged, which can be positioned with its central portion above the pressure point for the cardiac massage. Thus takes place in the cardiac massage has an elongation of the strain sensor element 10, this together with the insulating web 6 at its peripheral edge on the chest of the person to be rescued is fixed or is provided to the strain sensor element with a retaining ring. The insulation mat 6 also serves as a support for a display unit 5 to inform the workers about the efficiency of its printing operation. The Anzeigeein- integrated 5 can be omitted or be mounted elsewhere. An insulating mat itself can also be used in conjunction with the other herein disclosed embodiments of the apparatus for supporting the rescue personnel. Instead of the insulation mat 6, an insulating pad in the area of ​​the operating part can already help that the risk of contact of the rib cage is prevented with the hands.

Fig. 13 shows a further embodiment for the device for assisting a rescuer in performing a cardiopulmonary resuscitation. Here, an electrode assembly having two defibrillator electrodes 22 mounted on the chest of the person to be arranged to be rescued sensor unit 1, so that these together with the sensor unit 1 is defined on the chest of the patient can be positioned in a simple manner to the. The actuating member 3, the sensor unit 1 is the positioned at the printing point person to be rescued, and the sensor unit 1 with the aligned by the actuating part 3 on the one hand down and the other upwardly extending strain sensor elements 10 in the longitudinal direction person to be rescued. The defibrillator electrodes 22 come to the right for defibrillation situation by allowing them to be folded laterally easy. In this design, the lines to the defibrillator electrodes 22 can be guided in the connecting cable 21, so that a simple conjunction with the defibrillator unit 20 and the processing device 2 when subsequent to the person to be rescued is obtained. Other sensor units one such. , Those having across the chest extending strain sensor elements 10, as described above, may be carried out as a defibrillator electrodes 22 contiguous unit. Fig. 14 shows an advantage in the previously described device for assisting the rescuer in performing a cardiopulmonary resuscitation applicable display unit 5. The display unit 5 preferably has self-luminous or actively backlit or be backlit elements. The display unit includes two display sections 50, one of which forms a part of a frequency indicator 51 for the printing frequency and the other a pressure display part for the compressive force or pressure depth. The display unit 5 is advantageously located at the chest compressions in the range of the sensor unit 1, such as in the field of view of the helper. B. FIGS described above. 4A and 4B. Further details concerning the design of the display unit 5 are taken 10, 2013 1 14 565 in the (not pre-published) German patent application no.. FIGS. 15A, 15B and 15C show examples of displaying the frequency display part 51 in various situations of chest compressions.

In the above embodiments, in a further excluded staltung a selection device for an adjustment to the body height, body weight, age and / or sex of exist person to be rescued, with the current setting is included in the evaluation by the processing device. The selection device can be designed for manual adjustment via a switch or push-button and / or for a language or to select a communication interface for defibrillation 20th For example, be eligible a child mode or baby mode. Further, it can be provided that the mode selected by the selection device setting using the display unit 5 or other display device is displayed. When the device for supporting rescue personnel and is operated in conjunction with a defibrillator device, a recognition signal may be generated during cardiac resuscitation, the suppressed by the chest compressions caused artifacts (CPR artifacts) in the ECG signal, so that the defibrillator device ( AED) is faster in a position in the analysis phase to carry out a rhythm analysis. For example, provided by a ECG channel, a signal for Störgrößenunterdrückung by a feedforward control unit 20, the defibrillator is available and so the rhythm analysis allows reliable during cardiac resuscitation by measuring the CPR artifact or disturbance.

In a further embodiment it can be provided that the strain sensor elements 10 integrated with the defibrillation electrodes or it or mounted in or are attachable. In the above described embodiments, further different threshold values ​​are provided by means of which by comparison with the current sensor signals or values ​​derived therefrom excessive pressure or a too low compression, insufficient relaxation of the pressure relief and / or too high or too low can / can be signaled printing frequency and displayed. So the correct chest recoil during cardiac massage is an important CPR parameters to ensure that an adequate filling of the heart with blood and subsequently an adequate cardiac output can be achieved as outlined above. It can be assumed that a complete chest recoil is achieved above a certain minimum force that the rescuer applies directly or indirectly on the pressure point by the restoring forces of the thorax. Furthermore, the detection of the beginning of a loading phase by the pressing force and the detection of a minimum compression depth important CPR parameters, as discussed above.

The determination of the timings for the overshooting or undershooting of the minimum power (detection of a correct discharge and the beginning of a loading phase) can be solved in different ways by means of the described apparatus. Thus, the zero position of the, or the strain sensor elements 10 and sensor elements based elastomer whose complete discharge or a defined bias voltage may be determined by means of the sensor unit. 1 The bias z can. B. advantageously take place at the above-described sensor unit 1 with the rigid formed retaining ring 1 12th In another embodiment, the strain sensor element 10 or an array of a plurality of strain sensor elements 10 in the initial position may be biased and be laid upon pressurization. Such a structure is such. B. that the or each strain sensor elements 10 mounted in a housing configured as actuating member 3 vertically or with a vertical component and z. B. means of a spring such. B. compression spring, biased in the initial position. When pressure on the actuating part 3, the pressure spring is compressed and the or each strain sensor elements 100 is or are more or less relaxed and contract in consequence of their elasticity corresponding together, whereby a detectable and analyzable change in capacitance or change in signal occurs.

The exceeding or falling below a minimum force for the detection of a correct discharge or at the beginning of an exercise phase can also be effected in that a switching element is used, which is structurally integrated into the device so that it only upon exceeding or falling below the minimum force is enabled or disabled. For example, the switching element can be realized so that it is activated on exceeding the minimum force and is deactivated when falling below the minimum force (power switch). However, it is also a reverse logic conceivable (Power button).

Structurally the exceeding or falling below the minimum force can be detected in other ways, namely:

a switching element is combined with a spring which is compressed during the pressing operation with the minimum force so that the switching element is actuated.

For this purpose, the spring may be integrated by a corresponding receptacle in a pressure plate, so that the switching element may also be responsive when the force takes place laterally offset to the spring. - There may be a biased pressure plate may be used, jumping on exceeding the minimum force into another plastic contour and thereby activates the switching element, but springs back when falling below the minimum force to the original contour, thereby deactivating the switching element. - It can be used to increase the reliability of the device for the correct detection of the occurrence of the minimum power even more switching elements in the aforementioned combinations. This is particularly true for the case that the aid does not press centrally on the designated with the chest compressions for the placement of the heel of the hand surface.

A further embodiment is that by the application of conductive structures on a spherical or cylindrical pressure body designed a minimum movement (and thus the occurrence of the minimum power) is detected. For this purpose, on the pressure body or a surface shaped substructure of the sensor unit 1 (for. Example, in the planar strain of strain sensor elements 10 in a ring which is applied to the chest) is applied, a film with electrically conductive structures. This can eg. B. be metallic vapor deposited or printed. As a counterpart serves a spherically shaped pressure body that serves as a palm rest. Is the minimum force applied, this is accompanied by a movement of the pressure body, which is then immersed in the sub-structure or film. On the surface of the pressure body contact surfaces are applied, which are short-circuited by conductive structures on the sub-structure. When falling below the minimum force this electrical connection is achieved.

A determination of the minimum compression depth can be achieved by the same structure with conductive patterns on a spherical or cylindrical pressure body and substructure or film. For this purpose, the geometric arrangement of the conductive patterns is chosen so that the electrical contact is made only on reaching the minimum pressure depth. This arrangement can be realized alone or in addition to an arrangement for detecting the minimum motion. With the same principle, it is also possible to determine the angle of application of force to the pressure hull. This will tilt in accordance with the direction of the force relative to its mounting point on the slide and therefore does not produce as a vertical force acting on concentric circles around the mounting point around contact with the film, but only in some areas. By a corresponding configuration of the conductive contact array structures can be produced, which allows conclusions to the angle of application of force to the vertical. In the formation of at least one strain sensor element 10 consists of a o of the plurality of piezoelectric films is an exemplary embodiment of the fact that various piezoelectric films are arranged in radial alignment in a stick-on to the breastbone or sternum in the pressure point foil around the pressure point. The piezoelectric films can be integrated to improve signal generation in so-called bimorph orientation. In the CPR resuscitation so arranged piezoelectric foils are alternately stretched and released and give proportional to the amount of stretching or electrical response signal change. This can be used to easily determine the printing frequency or number of pressure loadings. By combining the various signals, it is also possible to determine the pressure depth due to the known geometric arrangement of the piezoelectric films. In the intervals of compressions the chest movement may also be detected at the ventilator, and so, a conclusion can be drawn on the effectiveness of the ventilation. Also, modeling of the CPR artifact signal and a subsequent correction of the ECG signal is possible to carry out an ECG analysis also during the CPR resuscitation.

In order to increase the reliability of the evaluation of the sensor signals at different versions or to get additional statements, the processing device 2 can be supplied which can be included in the evaluation, various additional information or Zusatzsigna- le. Thus, the relief of chest compression may be measured by applying a fluidge- filled chamber is provided in the region of pressurization or connected, and the change of the pressure in the enclosed volume such. B. a gas filled cushion, is detected.

As other additional information for the assessment of the effectiveness of cardiopulmonary resuscitation signals of a blood flow sensor, an impedance measuring device, an oximetry measuring device (Sp02-, RS02 and / or ETCO2 measurement) and / or a photoplethysmograph measuring apparatus may further comprise (PPG) are additionally used in the evaluation in the processor. 2 The described device is easy to use and has a low power consumption. With low construction cost efficient chest compression is achieved even in a disturbing environment. Especially in connection with Defibrillationsmaßnah- men fewer interruptions and increased also by the efficiency of resuscitation.

Claims

Claims
1. A device for supporting the rescue personnel in performing a cardiopulmonary resuscitation activity and with a monitoring device for the chest compressions, at least one sensor unit (1) for the print processing device (2) for supplied thereto sensor signals comprises,
characterized,
that the sensor unit (1) includes fully least one strain sensor element (10) of a its electrical properties change when stretched material and is provided with a holding device, by means of which the at least one strain sensor element (10) with respect to the person to be rescued the breast in such a way can be fixed, the at least one strain sensor element (10) is deformed in synchronism with the printing operation and thus the sensor signal is formed.
2. Device according to claim 1,
characterized,
the at least one strain sensor element (10) is fixable in such a way with respect to the chest, it synchronously extended with the pressing operation or relaxed.
3. Device according to claim 1 or 2,
characterized,
that the strain sensor element (10) is mechanically prestressed in its starting position. Device according to one of the preceding claims,
characterized,
that the sensor unit (1) even when the pressing operation produces electrical energy and is ready for operation without an additional power supply or that the sensor unit (1) is supplied from the outside through radio frequency energy pulse packets.
Device according to one of the preceding claims,
characterized,
that the sensor unit (1) is designed as a pressure sensor, force sensor, position sensor or angle sensor.
Device according to one of the preceding claims,
characterized,
that a change in capacitance by which the sensor signal is formed is caused by the deformation of the at least one strain sensor element (10).
Device according to one of the preceding claims,
characterized,
is the at least one strain sensor element (10) formed of an elastomeric film, and coated on one or both sides with flexible electrodes. Device according to one of the preceding claims,
characterized,
that the processing device (2) for determining the amount of pressure actuation from the strength, frequency and / or phase of the sensor signal or the change is formed of at least one of these quantities. Device according to one of the preceding claims,
characterized,
that the processing device (2) is designed to determine the frequency of the printing operation based on the repetition strength, frequency and / or phase of the sensor signal.
Device according to claim 8 or 9,
characterized,
that the extent of the pressing operation includes the printing depth, the compressive force, the speed of pushing and / or relieving, the pause time or a combination of at least two of these parameters.
11. Device according to one of the preceding claims,
characterized,
that the retaining device attached to at least one holding part and two from each other at each strain sensor element at a distance (10) or having attachable fixing units, between which a stretchable portion of the respective strain sensor element (10), wherein the respective strain sensor element (10) with the aid of a fixing agent is attached to the associated holding part and by means of other fixing agent at a pressure in the actuator relative to the holding member away from and towards the latter in relieving moving body.
12. The apparatus of claim 11,
characterized,
that the moving body is in the printing operation by the manual force acting on the chest of the person to be rescued actuating part (3).
13. The apparatus of claim 12,
characterized,
that the holding part (40) is a attached to the breast fixing piece (11) or mounted on a support body holding member.
14. The apparatus of claim 13,
characterized,
that the processing device (2) for determining the pressure depth as a function of the changing in the printing operation angle (phi) is the same between the running in the direction of gravity vertical and the extent of the strain sensor element (10) with a known length.
15. Device according to one of claims 11 to 14,
characterized,
that the sensor unit (1) having a plurality of strain sensor elements (10) and a plurality of these respective associated holding parts or their common holding part and
that all the strain sensor elements (10) spaced from the or the holding parts are attached to the moving body. Device according to claim 15,
characterized,
that the common holder member is formed as a retainer ring (1 12). 17. The apparatus of claim 12,
characterized,
that a sensor arrangement comprising a surface contiguous strain sensor element (10) or a plurality of strain sensor elements (10) as a sensor array in a xy direction is elongated and along its circumferential edge attached continuously or at individual fixing points at the then circumferentially formed holding part by means of a fixing unit is and that the moving body is mounted by means of the other fixing unit in the central region of the sensor arrangement. 18. The apparatus of claim 17,
characterized,
that the capacities of the individual strain sensing elements (10) of the sensor arrangement are recognized by means of the processing device (2) and included in the evaluation.
19. Device according to one of the preceding claims,
characterized,
that the sensor unit (1) is formed so that at least one strain sensor element (10) transversely to the longitudinal extension of the person to be rescued by the breast can be laid and the change of the chest circumference and / or
Respiratory muscles of the chest during respiration through elongation change of at least one strain sensor element (10) by means of the processing device (2) is detectable and incorporable into the evaluation for determining the pressure depth and / or the printing frequency. 20. Device according to one of the preceding claims,
characterized,
that the sensor unit (1) is provided at least in the region of at least one strain sensor element (10) with an insulating protective layer. 21. Device according to one of the preceding claims,
characterized,
that in the processing device (2) at least one threshold value with which the sensor signal is compared is determined, and
that is determined by the processing device (2) from the comparison result of the start of printing, a minimum pressure depth, a maximum pressure depth and / or complete relief at the pressure actuation / are.
22. Device according to one of the preceding claims,
characterized,
that the sensor unit (1) comprises at least a switching circuit for setting at least one threshold value for the start of printing, a minimum pressure depth, a maximum pressure depth and / or complete relief at the pressing operation. 23. Device according to one of the preceding claims,
characterized,
that in a receiving unit of the sensor unit (1) at least one strain sensor element (10) is accommodated under bias and that the receiving unit is designed such that the at least one strain sensor element (10) is released when pressure is applied.
24. Device according to one of the preceding claims,
characterized,
that it comprises at least another detection unit for detecting the respiratory activity, blood flow, oxygen saturation or the carbon dioxide enrichment of the blood, the volume pulse and / or body impedance of the person to be rescued is formed, and
that the detection signals of the at least one further acquisition unit of the processing device (2) during operation can be evaluated and fed by the latter.
25. The device according to any one of the preceding claims,
characterized,
that it comprises a processing device controlled by the display device having an optical display unit (5) and / or acoustic output unit to inform the cardiac massage exerting rescuer on pressure actuation.
26. The device according to any one of the preceding claims,
characterized,
that it comprises a defibrillator device, the processing device (2) accommodated in signal communication or can be brought to tune the release of a defibrillation shock to the cardiac massage. Device according to claim 26,
characterized,
that a trigger point for the triggering of a defibrillation shock via the processing means (2) is matched to the sensor signal in the printing operation that the shock delivery takes place at a selectable point in time during the print cycle.
Device according to claim 26 or 27,
characterized,
that at least one strain sensor element (10) is integrated in at least one brillationselektrode Defi-.
Device according to one of the preceding claims,
characterized,
that it comprises a selection device for an adjustment to the body height, the body weight, the age group and / or the gender of the person to be rescued has, wherein the selected setting in the analysis by the processing device (2) is included.
Device according to one of the preceding claims,
characterized,
that it is provided with an additional pressure sensing unit comprising an entrapped in a closed volume of fluid. Device according to one of the preceding claims, characterized in that
the at least one strain sensor element (10) is formed as an elastomer film piezoelectric film strain gauges or Potentiometerfolie.
PCT/EP2015/062949 2014-06-11 2015-06-10 Device for assisting rescue staff in performing a cardiopulmonary resuscitation WO2015189275A1 (en)

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US9805623B1 (en) 2016-04-08 2017-10-31 I.M.Lab Inc. CPR training system and method
US9812037B2 (en) 2016-04-08 2017-11-07 I.M.Lab Inc. CPR training system and method

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