EP3302395B1 - Vorrichtung und verfahren zur unterstützung eines anwenders bei einer kardiopulmonalen reanimation - Google Patents

Vorrichtung und verfahren zur unterstützung eines anwenders bei einer kardiopulmonalen reanimation Download PDF

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Publication number
EP3302395B1
EP3302395B1 EP16726482.9A EP16726482A EP3302395B1 EP 3302395 B1 EP3302395 B1 EP 3302395B1 EP 16726482 A EP16726482 A EP 16726482A EP 3302395 B1 EP3302395 B1 EP 3302395B1
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EP
European Patent Office
Prior art keywords
force
mat
transmission unit
control device
exerted
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EP16726482.9A
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German (de)
English (en)
French (fr)
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EP3302395A1 (de
Inventor
Donald Herbert DUSSAULT
Dominic Oliver DUSSAULT
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DUSSAULT, DOMINIC OLIVER
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Individual
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H31/00—Artificial respiration or heart stimulation, e.g. heart massage
    • A61H31/004—Heart stimulation
    • A61H31/005—Heart stimulation with feedback for the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H31/00—Artificial respiration or heart stimulation, e.g. heart massage
    • A61H31/004—Heart stimulation
    • A61H31/006—Power driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H31/00—Artificial respiration or heart stimulation, e.g. heart massage
    • A61H31/004—Heart stimulation
    • A61H31/007—Manual driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H31/00—Artificial respiration or heart stimulation, e.g. heart massage
    • A61H2031/002—Artificial respiration or heart stimulation, e.g. heart massage fixed on the chest by adhesives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0161—Size reducing arrangements when not in use, for stowing or transport
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1683—Surface of interface
    • A61H2201/1688—Surface of interface disposable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A61H2201/5025—Activation means
    • A61H2201/503—Inertia activation, i.e. activated by movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A61H2201/5043—Displays
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A61H2201/5048—Audio interfaces, e.g. voice or music controlled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A61H2201/5061—Force sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5097—Control means thereof wireless

Definitions

  • the present invention relates to a device and a method for assisting a user in cardiopulmonary resuscitation.
  • cardiopulmonary resuscitation cardiac resuscitation
  • the cardiac massage is of central importance, whereby a pressure force is exerted on the center of the patient's chest in a cycle of approximately 100 to 120 times per minute.
  • the breastbone is pressed down so that blood is pumped from the heart into the circulation.
  • the heart fills with blood again in the relief phases between the pressure surges.
  • the cardiac massage should be supplemented with ventilation if possible.
  • US 5,496,257 describes a portable device for assisting a rescuer to perform cardiopulmonary resuscitation of a patient, which has a housing that rests on the patient's chest so that compression forces can be exerted on the patient's chest via the device.
  • the device has an on / off switch and visual and acoustic display means.
  • a processor unit is provided which compares the permissible values stored in a ROM chip with the currently measured values and controls the display means in order to advise the rescuer of the correct use of the cardiopulmonary resuscitation.
  • a cardiopulmonary resuscitation device for use in breast compression which is arranged to emit a tone when the breast compression is performed with a force exceeding a predetermined value and also to produce a tone which is desirable Breast compression rate indicates.
  • the user exerts a pressure force on the upper surface of the device with his hands.
  • a pin connected to an upper part of the device is pressed against a contact connected to a lower part of the device, whereby a supply circuit of a microcontroller circuit is closed.
  • a mechanical tone generator generates a click tone with each pressure surge. By comparing the mechanically generated click sound with the from the sound produced by the metronome, the user can determine whether he is exerting the pressure force with the necessary strength and frequency.
  • an electronic tone generator can also be provided.
  • a device for controlled cardiopulmonary resuscitation at cardiac arrest which consists of an arcuate pressure transmission means which is connected at its ends to a flat, relatively rigid, pressure-absorbing element.
  • the geometrical dimensions of the device are approximately between 10 and 25 cm in diameter and approximately 6 to 12 cm in height.
  • a mechanical pressure is exerted on the pressure transmission means, which generates a perceptible signal when a maximum force is exerted, which is caused by the interaction of spring elements.
  • strain gauges can be arranged at the end of the pressure transmission means, which supply a signal to electronics, as a result of which a perceptible acoustic or optical signal is generated.
  • US 2011/0201979 A1 describes a cardiopulmonary resuscitation system with guided active compression-decompression, which is attached to the chest of a patient with an adhesive cushion to exert compression and decompression forces.
  • the system includes a handle with a shaft that contains a measuring cell for measuring the compression and decompression forces.
  • the system comprises a mushroom-shaped element with a handle, which is connected via a shaft to an upper surface of a flexible contact pad.
  • the contact pad has an adhesive to secure the contact pad to a surface of the patient's chest.
  • the device is placed approximately in the middle of the breastbone on the patient's chest, the user grips the handle with both hands and exerts a compressive force on the handle; at the end of the compression stroke, the user pulls up the handle to expand the chest.
  • US 4,355,634 discloses a location device for cardiac compression in cardiopulmonary resuscitation.
  • the device has a rectangular long main body made of a rigid plastic foam and attached to the top and bottom pillow-like foam layers.
  • a tactile, tactile signal device is arranged in a rectangular opening of the main body and emits a signal when a given pressure is exerted.
  • U1 has a device for indenting a human or animal body means for guiding the indentation, which emit a sound when pressed in at the correct pressure depth.
  • the device can be designed as a pillow or bag.
  • a connecting device of a hinged mobile phone which has a connecting section which pivotally connects two housing sections to one another.
  • a device is designed to support a user in cardiopulmonary resuscitation (cardiopulmonary resuscitation) of a patient.
  • “User” here means a person who has a cardiopulmonary Performs resuscitation without implying a restriction on the group of people.
  • the user can be a medical layperson, but can also be a medically trained person, for example a trained first aider.
  • Several people can also perform the cardiopulmonary resuscitation, for example several people can alternately or simultaneously perform the cardiac massage and / or one or more other people can perform ventilation; in this case, the majority of the persons who carry out the resuscitation are also referred to as "the user".
  • the term "patient” is used to refer to the person to whom cardiopulmonary resuscitation is carried out, regardless of the cause and the circumstances of the resuscitation.
  • the use of the device according to the invention on a person is described below, but it goes without saying that the device can also be used on a dummy for training purposes.
  • the device according to the invention comprises a force transmission unit which is designed to transmit and detect a force which the user can exert on the patient's chest during cardiac massage.
  • This force which is exerted essentially perpendicularly on the surface of the rib cage and which is transmitted to the rib cage via the force transmission unit, is also referred to below as “compressive force” or “compressive force”.
  • the device is preferably designed only to exert a compressive force on the chest and not to exert a tensile force.
  • the force transmission unit comprises a lower plate which can be placed on the patient's chest and which is preferably designed as an essentially flat, rounded disk.
  • “below” denotes the side facing the patient and "above” the side facing the user.
  • the lower plate can be a flat, circular disc with a diameter of approximately 5 to 12 cm. This size corresponds approximately to the size of the area of the chest on which pressure is to be exerted during a cardiac massage.
  • the lower plate can be designed, for example, as a thin disk with a thickness of approximately 1 mm.
  • the power transmission unit comprises an upper plate, which is arranged at a distance from the lower plate, in particular parallel to it and largely congruent, so that the upper and lower plates essentially overlap one another.
  • the top plate is constructed in the same way as the bottom plate, i.e. in particular as a thin, circular disc with a diameter of approximately 5 to 12 cm and a thickness of approximately 1 mm.
  • the lower and the upper plate can for example consist of a hard plastic.
  • a force sensor is arranged between the lower and the upper plate to detect a force exerted on the lower plate via the upper plate.
  • the force sensor can in particular bear against the lower and the upper plate and thereby support the upper plate on the lower plate and transmit forces from the upper to the lower plate and simultaneously detect them. If a compressive force is exerted on the upper plate perpendicular to the surface of the plate, then when the lower plate lies directly or indirectly on the surface of the chest, this is transmitted from the upper to the lower plate and further to the chest and at the same time by the force sensor detected.
  • the force sensor can, in particular, emit an analog or digital sensor signal which represents the force detected by the force sensor and thus allows a conclusion to be drawn about the pressure force which the user exerts on the upper plate and is transmitted from the force transmission unit to the patient's chest.
  • the device according to the invention further comprises a display device which is designed to generate at least one signal which can be perceived by the user.
  • the signal can in particular be an acoustic, an optical and / or a haptic signal.
  • the signal is in particular of such a type and intensity that it can be perceived under a variety of different environmental conditions.
  • an optical signal of such a brightness or an acoustic signal of such a volume is such that it can always be perceived safely by a user even at an accident location with very differently bright lighting and, for example, loud traffic noises.
  • the display device can be used for generation be formed by signals perceivable via different perception channels, for example for the synchronous generation of an acoustic and an optical signal. With such redundant signals it can be achieved with increased certainty that at least one signal can be perceived under a multitude of different environmental conditions.
  • the device according to the invention comprises an electronic control device which is designed to actuate the display device on the basis of the force detected by the force sensor or the sensor signal emitted by the force sensor.
  • the electronic control device is connected to the display device and the force sensor, in particular via corresponding electrical lines.
  • the electronic control device can comprise a microcontroller or a microprocessor and can be set up for further evaluation of the sensor signal of the force sensor, for example for comparison with predetermined target values.
  • the power transmission unit is embedded in a mat.
  • the mat is flexible, that is to say it is flexible in at least one direction, in particular the mat is limp.
  • the flexible mat is in particular flat and has a larger area than the force transmission unit, in particular a multiple of the extent of the force transmission unit.
  • the mat preferably projects beyond the force transmission unit on all sides.
  • the mat can be, for example, rectangular, rectangular with rounded corners or in another shape.
  • the power transmission unit can be embedded in the mat approximately in the middle of the surface.
  • the power transmission unit can in particular be glued to the mat.
  • the force transmission unit is preferably completely enclosed by the mat, that is to say in particular covered with the material of the mat both on the underside of the lower plate and on the upper side of the upper plate and also enclosed laterally by the mat; the flexible mat can thus serve to protect the power transmission unit against moisture or dirt.
  • the flexible mat can serve as a mechanical support for improving the handling of the power transmission unit.
  • the flexible mat can also be used serve to distribute the compression force exerted on the power transmission unit more evenly onto the patient's chest and to avoid any edges of the power transmission unit causing injury to the patient.
  • the mat can, for example, also be designed as a cushion or cushion or have such a cushion or cushion.
  • the control device and the display device can also be completely or partially embedded in the flexible mat.
  • the device according to the invention can be placed more easily and more securely on the chest of the patient on whom a cardiac massage is to be carried out.
  • this allows the device to be placed more securely, so that the force transmission unit rests more securely on the area of the surface of the chest on which the pressure is to be exerted during the cardiac massage.
  • the shape of the mat can be adapted to physiological features, for example have a marking or a cutout for the patient's neck, so that the mat can be aligned with the patient's neck and correct placement of the force transmission unit is facilitated.
  • the safety of the use of the device for supporting cardiopulmonary resuscitation, in particular a cardiac massage can also be improved when carried out by a medical layperson.
  • the mat is flexible, it can be adapted to different physiological conditions, so that the device according to the invention can be placed correctly on the chest regardless of the stature, weight and gender of the patient.
  • the mat is flexible, it can also be adapted to different storage and transport containers.
  • the at least one perceptible signal can be activated by actuating the display device is generated by the electronic control device and preferably there is no mechanical sound generation, the mechanical complexity and the space requirement of the device are reduced and the reliability is increased and the storage and transport of the device are facilitated.
  • At least the lower plate is deformable to adapt to the surface of the patient's chest, that is, when force is exerted when the force required for the cardiac massage is applied, the lower plate adapts to the shape of the surface of the chest in such a way that the force exerted on one Compression of the chest area is distributed, for example on a substantially symmetrical to the sternum, circular surface with a diameter of about 7 to 12 cm at the front of the breastbone.
  • the deformability of at least the lower plate results in a more favorable distribution of the force exerted on the surface of the chest.
  • the upper plate is also designed to be deformable in a similar manner, and, in the case of a flat design of the force sensor interposed between the lower and the upper plate, likewise the force sensor.
  • the force transmission unit is designed to be deformable overall with a rigidity that is greater than that of the flexible mat.
  • the lower plate or the power transmission unit is preferably designed to be elastically deformable overall.
  • the rigidity of the lower plate or the power transmission unit can be dimensioned such that, when it rests on a support with two opposing edges, it exerts about one or a few centimeters from the edges when a desired force for the cardiac massage is applied in its center yields.
  • the lower and the upper plate can each consist of a hard plastic, for example. As a result, the force exerted can be distributed over a sufficient area in a particularly simple manner in almost all cases.
  • the flexible mat preferably comprises at least two, in particular flat, layers, between which the force transmission unit is embedded.
  • the at least two layers are also flexible and in particular are connected to one another over a large area.
  • the force transmission unit is embedded in the mat in such a way that the underside of the lower plate is connected to the upper side of a lower layer and the upper side of the upper plate is connected to the underside of an upper layer of the mat.
  • the at least two layers can for example consist of rubber or a suitable foam. Because the mat comprises at least two, preferably flat, layers, between which the force transmission unit is embedded, the device according to the invention can be produced in a particularly simple manner.
  • the display device and / or the control device can also be completely or partially embedded between the at least two, preferably flat, layers.
  • the mat is designed to be non-slip on its underside and / or on its upper side and / or is printable or printed on its upper side.
  • the underside of the mat can, for example, be provided with an anti-slip coating and / or be roughened in order to enable secure positioning when it rests on the patient's chest even if it is dirty, for example with sweat or blood.
  • the top of the mat is also provided with an anti-slip coating and / or is roughened in order to enable a safe attachment of one or both hands of the user and a safe application of the pressure force even if the top of the mat is dirty or wet.
  • Instructions for carrying out cardiopulmonary resuscitation or a cardiac massage can be printed on the top of the mat.
  • markings can be printed on, which make the correct positioning of the force transmission unit easier to recognize and / or make it easier for patients of different body sizes. For example, different markings for positioning the mat for children and for adults can be printed. As a result, the use of the device is facilitated, in particular, by medical laypersons and in a stressful situation.
  • the device can have a further flexible layer, which is designed, for example, as a film or cloth and which, when the device is correctly positioned for a cardiac massage, can be placed over the face of the patient, around a face shield or a protective mask for ventilation of the patient.
  • the further layer can, for example, be glued or detachably attached with its edge to an edge area of the mat that comes to rest in the upper area of the chest and can be placed over the face of the patient.
  • the further layer can have a shape and / or markings which can additionally help in aligning the device on the patient's chest. This can improve hygiene and safety when performing ventilation in addition to cardiac massage.
  • the mat is foldable.
  • the mat as a whole can be sufficiently flexible so that a partial area of the mat can be placed over another partial area by folding.
  • the mat has several, for example three, sub-areas which are connected to one another via predetermined fold lines. In this way it can be achieved that the mat can be folded, the several partial areas of the mat being able to be folded over one another and lying flat on top of one another in this state and also being able to be unfolded accordingly.
  • the subregions of the mat can each have a substantially uniform, but possibly different thickness between the subregions.
  • the partial areas connected to one another via fold lines can themselves have a higher rigidity, while the mat in the fold lines has a lower rigidity and is flexible with a correspondingly smaller radius.
  • the fold lines can be formed, for example, as fold notches and can be produced, for example, by the fact that a mat that is otherwise consistently formed with the same material thickness is given a smaller material thickness in narrow, straight-line partial areas by embossing or milling; the fold lines can also be designed, for example, in the manner of film joints.
  • Such a foldable mat is also referred to below as "foldable".
  • the mat three over essentially parallel has mutually extending fold lines connected partial areas, so they can be arranged in a folded arrangement one above the other so that two or three partial areas lie one above the other.
  • the mat as a whole can be essentially rectangular and have two fold lines running parallel to one another and parallel to two opposite edges, which divide the area of the mat into three approximately equally large partial areas; folding up creates an arrangement in which the two lateral partial areas each cover the central partial area.
  • the force transmission unit can be embedded in a partial area of the mat, and the control and / or display device can or can be embedded in one or more other partial areas.
  • the fact that the mat is designed to be foldable or foldable makes it easier to store, package, transport and carry the device, for example in a motor vehicle.
  • the mat can be dimensioned in a folded or folded arrangement in such a way that it has the format of a motor vehicle first-aid kit in accordance with DIN 13157 and in this form fits into it; for use, the mat can be unfolded or unfolded in two simple steps.
  • a device can easily be carried in such a first aid kit, for example, in order to be immediately and easily available in the event of an accident.
  • the control device has a sleep mode and a work mode, wherein in the sleep mode the energy consumption of the control device is minimized and in particular the force sensor and the display device are not operated, while essentially all functions of the device are activated in the work mode.
  • the device has sensor means, on the basis of whose signals the control device is automatically switched from the sleep mode to the work mode when the mat is unfolded or unfolded.
  • the sensor means can be designed, for example, as a magnetic sensor or as a contact sensor.
  • two with one another interacting sensor elements can be arranged; the sensor elements lie against one another in the folded state, as a result of which the sleep mode of the control device is maintained, and are separated from one another when the mat is unfolded, as a result of which the control device is put into sleep mode from the sleep mode.
  • the device according to the invention remains functional over a long period of time, in particular over several years, and is immediately ready for support in cardiopulmonary resuscitation in the application without further measures.
  • the device can have a switch, the actuation of which switches the control device on or switches it from the idle to the working mode.
  • the control device is preferably set up in such a way that the device can only be used once.
  • a time period can be recorded during which no pressure force has been exerted after the last time a pressure force has been exerted or after the control device has changed into the working mode, and after a predetermined maximum time period of such inactivity the display device has been permanently deactivated.
  • the predetermined maximum period of inactivity is selected such that it can safely be assumed that a resuscitation that has started has ended, for example 15 minutes or an hour. In this way, it can be prevented with increased certainty that a device which has already been used and, for example, due to the energy consumption is no longer fully functional or no longer meets the hygienic requirements, is used again.
  • a seal can be attached to the device or to a packaging of the device, which seal has to be destroyed when the device is unpacked or unfolded and thus makes it possible to recognize the use that has already taken place.
  • the control device is preferably set up in such a way that the display device as a function of a maximum of the detected pressure force exerted on the force transmission unit, of a minimum of the force, of a difference between a maximum and a minimum of the force and / or of a frequency of a fluctuation in the detected Force is controlled.
  • the control device can in particular be designed to continuously record the pressure force exerted on the force transmission unit by recording and processing a sensor signal of the force sensor continuously or in a short time cycle. Maxima and minima of the force exerted can be determined from the time course of the sensor signal or the force value determined therefrom, and pressure surges can thereby be identified.
  • a relative maximum and a relative minimum can be determined within a full period of a periodic signal, the frequency of which corresponds to a predetermined frequency of the pressure surges to be exerted during a cardiac massage.
  • a force amplitude can be determined from this by forming the difference between the maximum and the minimum, the frequency being predetermined.
  • a frequency of the pressure surges actually exerted can also be determined from the time course of the sensor signal.
  • the display device can be designed to generate a signal that is designed differently depending on the detected maximum force, the minimum force, the force amplitude and / or the frequency of the fluctuation of the force or the pressure surges, for example by generating tones of different volume and / or different pitch or of light signals of different brightness and / or colors; Preferably, several such signals that can be perceived via different perception channels can be generated at the same time.
  • the display device can comprise a suitable sound generator and / or a suitable light source.
  • a suitable light source can consist, for example, of a plurality of light-emitting diodes of different colors, for example red, green and blue. This makes it possible for a user to receive information on a cardiac pressure massage about the pressure force exerted by him, about the relief between two pressure surges and whether he is exerting the pressure surges with a sufficient frequency.
  • control device is set up in such a way that a comparison of the detected value of the pressure force exerted on the force transmission unit with one or more predetermined target values is carried out and the display device as a function of a match of the maximum value of the force during a pressure surge, the minimum value of the force in the event of a pressure surge, the force amplitude and / or the frequency of the pressure surges is controlled with one or more target values or target ranges.
  • control device can include first storage means in which predetermined target values and / or target ranges for the maximum force value in the event of a pressure surge, the minimum force value in the event of a pressure surge, for the force amplitude and / or for the frequency of successive pressure surges are stored, to which the Comparison with values currently acquired or ascertained from the sensor signal can be accessed.
  • the control device can thus in particular be set up in such a way that the signal emitted by the display device makes it possible to recognize whether or not the pressure surges exerted by a user correspond in terms of strength, amplitude and / or frequency to target ranges for the cardiac pressure massage.
  • the signal of the display device can be configured in such a way that a direction of the deviation can also be identified, so that a user can recognize whether he is increasing or reducing the maximum force, increasing or decreasing the amplitude of the pressure surges and / or increasing the frequency of the pressure surges or must decrease in order to perform an optimal cardiac massage.
  • the safety of performing a cardiac massage can also be improved by a medical layperson.
  • the device according to the invention can be easily adapted to the requirements applicable to different patient groups. For example, by storing corresponding setpoints during production, a device according to the invention for cardiopulmonary resuscitation of children or for that of adults can be optimized without further changes being necessary.
  • a set of devices suitable for different applications to support cardiopulmonary resuscitation can be created.
  • control device is set up to emit a signal which indicates the need for ventilation of the patient in addition to or alternately with the cardiac massage.
  • a signal is generated which indicates the need for ventilation. This can further improve the effect of cardiopulmonary resuscitation.
  • the device according to the invention is preferably equipped with a self-sufficient energy supply, in particular with an electrical energy store, for example a battery or an accumulator.
  • an electrical energy store for example a battery or an accumulator.
  • the control device comprises second storage means and is set up in such a way that data are stored in the second storage means which represent the detected values of the force exerted on the force transmission unit and / or its time profile; otherwise the device can be designed as described above.
  • the second storage means can be designed as a single storage with the first storage means.
  • it can be advantageous to store a period of time from a first recorded application of force after switching on the device or after starting the working mode, maximum values of the pressure force of the individual recorded pressure surges, force amplitudes of the recorded pressure surges and the number and / or frequency of the pressure surges .
  • it can be provided that the entire course of the sensor signal generated by the force sensor or save the recorded force values.
  • the stored data can be available for subsequent evaluation and can serve as the basis for the decision on further measures, for example also on the further care after a successful resuscitation.
  • the stored data can likewise allow conclusions to be drawn about the effect of the cardiac massage carried out, as a result of which, for example, the learning effect when training cardiopulmonary resuscitation can be increased with a device according to the invention.
  • the second storage means can be read out in a wired and / or wireless manner, so that the data stored therein are available for display, evaluation and / or storage in a reading device.
  • the device can thus include means for transmitting stored data, for example by means of RFID technology, Bluetooth or via other wireless transmission paths. This enables, for example, medical professionals to immediately determine when they arrive at an accident site what type and effect the resuscitation measures already carried out by laypersons and to take further measures tailored to them, in particular with regard to cardiac massage and / or ventilation.
  • the control device can be set up to control the display device in response to an input signal that can be input by means of a switch or even when the force exerted on the power transmission unit is interrupted in such a way that a signal is generated that makes important stored data recognizable.
  • a number of repetitions of a short acoustic or optical signal or a number of activated light-emitting diodes can be the number of minutes that have passed since the start of the working mode or a first recorded application of force or during which a changing application of sufficient force has been recorded by the power transmission unit , specify.
  • references to the resuscitation measures carried out can be obtained in a particularly simple manner, which can serve as the basis for the decision on further measures.
  • the control device of a device designed as described above is automatically put into a working mode from a rest mode when the mat of the device is unfolded, a pressure force exerted on the force transmission unit with the force sensor Force transmission device is detected, the display device of the device is controlled by the control device on the basis of the detected force, and data about the detected force and / or its course over time is stored in a memory of the control device.
  • the stored data can be, for example, a time which has elapsed since a first application of force or a first pressure surge, a maximum force of each pressure surge and / or a frequency of the pressure surges detected.
  • the display device is dependent on a maximum force exerted on the force transmission unit, a minimum force exerted on the force transmission unit, a difference between the maximum and minimum force and / or a frequency of a fluctuation in the force exerted on the force transmission unit controlled, in particular depending on a correspondence with a respective target value or a target range.
  • the memory of the control device is read out in a wired and / or wireless manner.
  • the device is first removed from a package into which the device can be welded. If the packaging has a seal, this is destroyed, so that it can be seen that the device has been used.
  • the device is opened by the partial areas of the mat which are placed one on top of the other.
  • a sensor signal is generated, by means of which the control device of the device is automatically switched from a sleep mode to a work mode.
  • the visual and acoustic indicators can then be activated as soon as the working mode is reached, or it may be necessary to press a power button.
  • the device is on the chest of a patient is placed and aligned using the markings printed on the top of the mat or formed by the shape of the mat.
  • the force transmission unit is embedded in the mat where the corresponding area is marked on the top. As soon as the user exerts a pressure force on this area, this is detected by the force sensor of the force transmission unit, and the sensor signal is evaluated by the control device of the device. If the specified target force for cardiac massage is not reached, this can be indicated by an appropriate tone and a colored light signal, such as a red light signal. If the force exerted is in the target range, this can be indicated by a green light.
  • the force amplitude of a pressure surge can also be measured and compared with a target range and the user can be given a corresponding signal.
  • the set frequency of the pressure surges to be exerted can be predetermined by a further light or a sound, or the actual frequency of the pressure surges exerted can be measured and a display can be made which shows whether the frequency is too low, is in a desired range or too is high.
  • a signal can be generated which indicates that ventilation is required. The cardiac massage is then continued. Storing and reading out the recorded force values, in particular the time profile of the pressure force exerted, can be advantageous to support a decision about the further care of the patient after the use of the device according to the invention has ended.
  • a device according to the invention for supporting cardiopulmonary resuscitation has an approximately rectangular shape overall, the side lengths a, b being, for example, approximately 44 cm and approximately 24 cm.
  • the device 1 comprises a continuous flexible mat 2, which is formed by two fold lines 3, 4 in which run parallel to one another and parallel to the narrow sides of the rectangle three sub-areas 5, 6, 7 of almost the same size is divided. Overall, the mat 2 is sufficiently flexible to adapt to the surface of a patient's chest on which the device 1 is placed.
  • the fold lines 3, 4 are thinned out by embossing or milling and are thereby provided with greater flexibility than the partial areas 5, 6, 7.
  • the device 1 further comprises a force transmission unit 10, which is embedded approximately in the middle of the central partial region 6 of the mat 2.
  • a force transmission unit 10 which is embedded approximately in the middle of the central partial region 6 of the mat 2.
  • an electronic unit 20 embedded in the mat 2 with a battery unit 21 and two interacting push-button elements 22, 23 (see below).
  • the battery unit 21 serves for the electrical energy supply of the electronics unit 20;
  • a button cell is used in the battery unit 21 as an electrical energy store.
  • Electric lines 24, 25, 26, 27 indicated, via which the push button elements 22, 23, the battery unit 21 and the power transmission unit 10 are connected to the electronics unit 20.
  • the lines 25, 27 run through one or more fold lines 3, 4 and are designed to be correspondingly flexible.
  • the lines 25, 27 can run in sections along the fold lines 3, 4 in order to improve the foldability of the mat 2.
  • the subareas 5, 6, 7 of the mat can be superimposed by folding them along the fold lines 3, 4.
  • Fig. 2 the device 1 is shown in the folded state.
  • a first section 5 is folded on the fold line 2 over the second, middle section 6 of the mat 2 and rests thereon.
  • the third sub-area 7 is folded along the fold line 4 over the superimposed sub-areas 5, 6.
  • the device 1 thus fits in a folded first aid kit according to DIN 13157.
  • the middle section 6 and the third section 7 have approximately the same edge lengths, while the first section 5 is somewhat shorter in the direction of the long edge of the mat 2, according to according to the folded arrangement without folds Fig. 2 to come to rest.
  • the force transmission unit 10 is designed approximately in the form of a circular disk with a diameter D of approximately 5 to 12 cm (see FIG. Fig. 3a ).
  • the force transmission unit 10 consists of a lower plate 11, an upper plate 12 and an intermediate force sensor 13.
  • the plates 11, 12 are both designed as flat circular disks, which are arranged congruently with one another and via the likewise flat force sensor 13 are interconnected.
  • the plates 11, 12 can consist of a hard plastic and each have a thickness of approximately 0.3 to 1.4 mm.
  • the plates 11, 12 and the force sensor 13 can be flexible, so that the force transmission unit 10 as a whole is flexible, in particular elastically bendable and has a rigidity which, for example, corresponds to that of a conventional credit card.
  • the force sensor 13 which can be a piezoelectric or a resistive force sensor, for example, has a measuring range of 0.1 to 300 Newtons and a thickness of about 0.1 to 2.5 mm, for example 0.45 mm.
  • the force sensor 13 has, for example, a square area with a side length of approximately 4 cm and has an accuracy of ⁇ 3%, an operating temperature range from -30 to +70 ° C, a response time of approximately 5 ⁇ s and a service life of approximately one million Print cycles on what is usually sufficient for the present application.
  • the force transmission unit 10 is embedded in the mat 2.
  • the mat 2 consists of a lower layer 8 and an upper layer 9, which are connected to one another for example by gluing.
  • the lower and the upper layer 8, 9 consist for example of rubber or a suitable foam and each have a thickness of approximately 2 mm.
  • the force sensor unit 10 is embedded between the lower layer 8 and the upper layer 9 and glued to the lower layer 8 and to the upper layer 9.
  • the electrical line 27, via which the force sensor 13 is connected to the electronics unit 20 (see. Fig. 1 ), which is also embedded between the lower layer 8 and the upper layer 9 of the mat 2, is in Fig. 3b not shown.
  • the bottom 14 of the lower layer 8 is anti-slip coated or roughened to ensure a safe and firm positioning of the Allow mat 2 on the patient's chest.
  • the top 15 of the top layer is also coated or roughened in an anti-slip manner and is printable and printed with brief instructions for using the device in cardiopulmonary resuscitation and with markings for correct positioning.
  • the device 1 is shown in a folded state, in a folded state and at the beginning of the unfolding in a sectional view, only the mat 2 and the push button elements 22, 23 being shown.
  • a first push-button element 22, which comprises a socket is arranged in the lower layer 8 of the mat 2 in the first partial region 5 near the fold line 3.
  • the first partial area 5 is placed over the central partial area 6 and the third partial area 7 is in turn folded over the first partial area 5.
  • the second push-button element 23 comes into contact with the first push-button element 22, so that the head snaps into the socket and the push-button elements 22, 23 are connected to one another.
  • the three sections 5, 6, 7 are folded one above the other in the manner described and the push button with the push button elements 22, 23 is closed.
  • a circuit is closed via the electrical lines 24, 25 through which the push-button elements 22, 23 are connected to the electronic unit 20 (see Fig. 1 ).
  • the device 1 is in the folded state, which is shown in FIG Fig. 4b is shown and is therefore not in use.
  • the electronics unit 20 is in a sleep mode, which is associated with very low energy consumption and in which only the circuit is monitored by the push-button elements 22, 23.
  • the head of the second one Push button element 23 pulled out of the socket of the first push button element 22 and the circuit opened; this is in Fig. 4c shown.
  • the opening of the circuit is registered by the electronic unit 20 which is in the idle mode and puts it in a working mode in which the further electrical and electronic functions of the device 1 are activated.
  • the electronics unit 20 is shown in detail in a top view and in a cross section through the mat 2 in the first partial area 5.
  • the electronics unit 20 comprises a printed circuit board (PCB) 30 which carries a tone generator 31, a microcontroller 32 and an LED unit 33.
  • the tone generator 31 is, for example, a piezoelectric tone generator which is suitable for generating tones in the audible frequency range with a volume sufficient for perception even in a noisy environment.
  • the LED unit 33 comprises a plurality of light-emitting diodes (LED, light-emitting diodes) 34, 35, 36 which generate light in different colors with a brightness which is also sufficient for perception in bright daylight, for example the LED 34 red light, the LED 35 green light and the LED 36 blue light.
  • the tone generator 31 and the LED unit 33 each have a thickness of approximately 2 to 3 mm.
  • the microcontroller 32 is set up to record and evaluate the sensor signal generated by the force sensor 13 and to control the tone generator 31 and the LEDs 34, 35, 36.
  • the microcontroller 32 has processor means with corresponding drivers and a RAM memory in which setpoints for the force of the pressure surges to be applied during the cardiac pressure massage and the frequency of the pressure surges are stored.
  • the microcontroller 32 includes a further memory in which the measured values of the force actually exerted, measured via the force sensor 13, are stored together with corresponding time data, which are supplied by a clock or a clock generator of the microcontroller 32, and thus the chronological sequence of the cardiac massage that has taken place . Furthermore, the microcontroller 32 can be assigned transmission means for a preferably wireless transmission of the stored data, for example via Bluetooth, to a receiving device, which can be, for example, a smartphone with a corresponding app.
  • Fig. 5a are furthermore the electrical lines 24, 25 embedded in the mat 2, via which the circuit can be closed by the push-button elements 22, 23, the line 26, via which the electronics unit 20 is supplied with electrical energy by the battery unit 21, and the line 27, via which the microcontroller controls the force sensor 13 of the force transmission unit 10 and receives its sensor signal, is indicated (see Fig. 1 ).
  • the electronics unit 20 is inserted between the lower layer 8 and the upper layer 9 of the mat 2 and integrated into the upper layer 9 of the mat 2 such that the printed circuit board 30 is embedded between the upper layer 9 and the lower layer 8 and the tone generator 31 and the LED unit 33 are flush with the upper surface 15 or protrude slightly above this.
  • the circuit board 30 can be glued to the upper layer 9 and to the lower layer 8.
  • Electrical lines 24, 25, 26, 27, which are not visible, are likewise embedded between the lower layer 8 and the upper layer 9 of the mat 2.
  • Fig. 6 is shown symbolically how the device 1 is stored on the chest of a patient 40 in the unfolded state.
  • the area of the mat 2 in which the force transmission unit 10 is embedded comes to lie on the breastbone, so that pressure surges exerted on the force transmission unit 10 are transmitted to the breastbone and lead to compression of the rib cage.
  • the area in which the power transmission unit 10 is embedded is color-coded on the top of the mat 2.
  • the device 1 To use the device 1, it is removed from a package into which it is folded or folded (see FIG. Fig. 2 , Fig. 4b ) is welded in. The device 1 is then according to Fig. 4c unfolded or unfolded, the push-button elements 22, 23 being separated from one another and the circuit closed via them and the lines 24, 25 being opened. This places the microcontroller 32 in the working mode and the tone generator 31 and the blue LED 36 are activated to generate acoustic and optical signals in a rhythm which corresponds to the target frequency of the pressure surges during a cardiac massage; it can be provided that the signals are output with a delay, for example only about 2 seconds after the device 1 has been unfolded or folded.
  • an optical and an acoustic signal with a short period of time are generated at a repetition frequency of about 100 / min.
  • the device 1 is placed on the chest of a patient 40 by a user, so that the force transmission unit 10, which is marked on the upper side 15 of the mat 2, on the breastbone in the area in which the compressive force has to be exerted during the cardiac massage. comes to rest; the shape of the mat 2 and possibly further markings on the mat 2 help with correct positioning.
  • the user then begins the cardiac massage and applies a compressive force to the area marked on the top 15 of the mat 2.
  • the pressure force exerted is continuously detected by the force sensor 13 of the force transmission unit 10, and the maximum and the minimum of the pressure force detected within the period are determined after the end of a full period of the clock signal of approximately 100 / min. If the maximum determined is above a first target value, for example 220 N, and the minimum is below a second target value, for example 50 N, the green LED 35 is activated. If the maximum is below the first setpoint and / or the minimum is above the second setpoint, the red LED 34 is activated. After a predetermined number of pressure surges that meet the specified conditions, an acoustic or optical signal is generated, which indicates that ventilation is required. After a predetermined time, a further signal is emitted, which indicates that the cardiac massage should be continued.
  • the temporal course of the force exerted or the pressure surges are stored in the RAM memory of the microcontroller 32. If medical personnel arrive after a resuscitation carried out by a layperson, the stored data is read wirelessly and displayed on a reading device, such as a smartphone, and is available as a basis for deciding on further measures. Having no pressure surges for a long period of time have been exercised, the tone generator 31 and the LED unit 33 are no longer actuated by the microcontroller 32, even after the pushbutton elements 22, 23 have been connected and disconnected again Data available.
  • a white LED 51 is provided to indicate a predetermined cycle of the pressure surges to be exerted by a user during a cardiac massage and an LED unit 52 to indicate whether or not the force exerted is within a desired range of the cardiac massage.
  • the LED unit 52 comprises a red and a green LED, the green LED lighting up when the force exerted is in the desired range and the red LED when the force is too low; a further LED can also be provided, which is activated if the force exerted is too high, but this rarely occurs in practice.
  • a ventilation display is provided, for example in the form of an arrow 53 formed with blue LEDs, which is activated after a predetermined number of pressure surges in order to indicate to a user that ventilation of the patient is necessary.
  • the mat 2 of the device 50 is designed to be placed transversely on the chest of a patient and has markings 54 on the central portion 6 for alignment on the patient's neck.
  • the in Fig. 7 Device 50 shown is designed in a manner corresponding to device 1 described above and is used in a corresponding manner.
  • Fig. 8 shown symbolically, is in the Fig. 7
  • the correct position of the device 50 or the mat 2 on the chest of a patient 40 such that the neck 41 of the patient 40 lies above the central portion 6.
  • the mat 2 has markings 54 which indicate the correct positioning of the mat 2 in relation to the neck 41 of the patient 40;
  • an imprint 55 is applied to the top of the mat 2, which represents the correct positioning of the device 50.

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  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Percussion Or Vibration Massage (AREA)
EP16726482.9A 2015-05-27 2016-05-23 Vorrichtung und verfahren zur unterstützung eines anwenders bei einer kardiopulmonalen reanimation Active EP3302395B1 (de)

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DE102015006540.8A DE102015006540A1 (de) 2015-05-27 2015-05-27 Vorrichtung zur Unterstützung eines Anwenders bei einer kardiopulmonalen Reanimation
PCT/EP2016/000851 WO2016188629A1 (de) 2015-05-27 2016-05-23 Vorrichtung und verfahren zur unterstützung eines anwenders bei einer kardiopulmonalen reanimation

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CA (1) CA2984108A1 (ko)
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CN110326035A (zh) 2017-01-24 2019-10-11 拉尔多医疗公司 Cpr训练***和cpr训练期间的通信方法
AU2018302141B2 (en) * 2017-07-20 2023-08-10 Michael Müller Sensor device for assisting an aider with a cardiopulmonary resuscitation
WO2019170285A1 (en) * 2018-03-09 2019-09-12 Dussault Dominic Oliver Apparatus and method for assisting a user during a cardiopulmonary resuscitation and manufacturing method
KR20200043669A (ko) 2018-10-18 2020-04-28 강원대학교산학협력단 휴대용 심폐소생술 보조장치
EP3981373B1 (en) * 2020-10-07 2024-01-24 Baxter Medical Systems GmbH + Co. KG Surgical table and method for detecting cardiopulmonary resuscitation by the surgical table
DE102022102387A1 (de) 2022-02-02 2023-08-03 Innotas AG Verfahren zur Kalibrierung eines FSR-Sensors und Vorrichtung zur Durchführung einer Herz-Wiederbelebungsmaßnahme
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CN115634140B (zh) * 2022-12-23 2023-03-17 苏州尚领医疗科技有限公司 一种心肺复苏反馈***及反馈仪

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JP2018519137A (ja) 2018-07-19
CA2984108A1 (en) 2016-12-01
KR20180014048A (ko) 2018-02-07
WO2016188629A1 (de) 2016-12-01
DE102015006540A1 (de) 2016-12-01
SG11201709317XA (en) 2017-12-28
MX2017015184A (es) 2018-04-13
US20180161238A1 (en) 2018-06-14
CN107847394A (zh) 2018-03-27
EP3302395A1 (de) 2018-04-11

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