EP3302395A1 - Apparatus and method for assisting a user during a cardiopulmonary resuscitation - Google Patents
Apparatus and method for assisting a user during a cardiopulmonary resuscitationInfo
- Publication number
- EP3302395A1 EP3302395A1 EP16726482.9A EP16726482A EP3302395A1 EP 3302395 A1 EP3302395 A1 EP 3302395A1 EP 16726482 A EP16726482 A EP 16726482A EP 3302395 A1 EP3302395 A1 EP 3302395A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- mat
- transmission unit
- patient
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- 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 an apparatus and method for assisting a user in cardiopulmonary resuscitation.
- cardiopulmonary resuscitation cardiopulmonary resuscitation
- Heart pressure massage is of central importance, whereby a pressure force is exerted on the center of the patient's chest at a rate of about 100 to 120 times per minute.
- the sternum is depressed, so that blood from the heart is promoted into the circulation.
- the heart fills with blood again.
- the cardiac massage should preferably be supplemented by ventilation.
- US 5,496,257 describes a portable device for assisting a rescuer to perform cardiopulmonary resuscitation on a patient having a housing that rests on the patient's chest so that compressive forces can be applied to the patient's chest via the device.
- the device has an on / off switch and visual and audible display means.
- a processor unit that compares allowable values stored in a ROM chip with currently measured values and drives the display means to alert the rescuer to the correct use of cardiopulmonary resuscitation.
- WO 2004/056303 A1 discloses an apparatus for use in breast compression in connection with cardiopulmonary resuscitation, which is adapted to deliver a tone when the breast compression is performed with a force exceeding a predetermined value, and also a tone to generate the desirable frequency of chest compression.
- a mechanical tone generator Each time you hit the trigger, a mechanical tone generator generates a clicking sound. By comparing the mechanically generated click sound with the The tone generated by the metronome allows the user to determine whether he applies the pressure force with the necessary strength and frequency.
- an electronic tone generator may also be provided. From WO 2014/071915 A2 a device for controlled cardiopulmonary resuscitation in cardiac arrest is known, which consists of an arcuate pressure transmitting means which is connected at its ends with a flat relatively rigid pressure-receiving element in combination. The geometric dimensions of the device are approximately between 10 and 25 cm in diameter and about 6 to 12 cm in height.
- strain gauges may be disposed at the end of the pressure transmitting means that provide a signal to an electronic unit, thereby producing a perceptible audible or visual signal.
- US 2011/0201979 A1 describes a system for cardiopulmonary resuscitation with guided active compression decompression, which is attached to the chest of a patient with an adhesive pad to exert compression and decompression forces.
- the system includes a handle with a shaft containing a measuring cell for measuring the compression and decompression forces.
- the system comprises a mushroom-shaped member having a handle 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.
- US 4,355,634 discloses a localization device for cardiac compression in cardiopulmonary resuscitation.
- the device comprises a rectangular elongated main body made of a rigid plastic foam and attached top and bottom pillow-like foam layers.
- a tactile tactile signaling device is arranged which emits a signal upon application of a given compressive force.
- a device for impressing a human or animal body has means for guiding the indentation, which emit a sound when impressed at the correct pressure depth.
- the device may be designed as a cushion or bag.
- connection device of a hinged mobile phone which has a connecting portion which pivotally connects two housing sections together.
- a device according to the invention is designed to assist a user in cardiopulmonary resuscitation (cardiopulmonary resuscitation) of a patient.
- “User” means here a person who has a cardiopulmonary Perform a resuscitation, without this being a limitation of the group of people is implied.
- the user may in particular be a medical layman, but may also be a medically trained person, for example a trained first responder.
- the term "patient” refers to the person on whom cardiopulmonary resuscitation is performed, regardless of cause and circumstances the resuscitation.
- the device according to the invention comprises a kjaft transfer unit which is designed to transmit and record a force that can be exerted on the patient's chest by the user during the cardiac massage.
- the force transmission unit comprises a lower plate which can be placed on the patient's thorax and which is preferably designed as a substantially flat, rounded disc.
- “down” refers to the side facing the patient and “up” to the side facing the user.
- the lower plate may be a flat, circular disc having a diameter of about 5 to 12 cm.
- the lower plate may be formed, for example, as a thin disc having a thickness of about 1 mm.
- the power transmission unit comprises an upper plate which is spaced from the lower plate, in particular parallel thereto and substantially congruent so that the upper and lower plates substantially overlap one another.
- the upper plate is formed in the same way as the lower plate, ie in particular as a thin, circular disc with a diameter of about 5 to 12 cm and a thickness of about 1 mm.
- the lower and the upper plate may for example consist of a hard plastic.
- a force sensor is arranged for detecting a force exerted on the lower plate via the upper plate.
- the force sensor may abut in particular on 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 detect simultaneously. If a compressive force is exerted on the top plate perpendicular to the surface of the plate, when the bottom plate rests directly or indirectly on the surface of the chest, it is transmitted from the top to the bottom plate and further to the chest and at the same time from the force sensor detected.
- the force sensor can emit an analog or digital sensor signal which represents the force detected by the force sensor and thus permits a conclusion about the pressure force exerted by the user on the upper plate and transmitted by the force transmission unit to the patient's thorax.
- the device according to the invention further comprises a display device which is designed to generate at least one signal perceivable by the user.
- the signal may in particular be an acoustic, an optical and / or a haptic signal.
- the signal is of such a nature 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 that this can always be perceived by a user at an accident with very different bright lighting and loud traffic noise, for example, always safe.
- the display device can be used to generating signals detectable via different perception channels, for example for the synchronous generation of an acoustic and an optical signal. Through such redundant signals can be achieved with increased certainty that at least one signal can be perceived under a variety of different environmental conditions.
- the device according to the invention comprises an electronic control device which is designed to control the display device on the basis of the force detected by the force sensor or of 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 recorded sensor signal of the force sensor, for example for comparison with preset desired values.
- the power transmission unit is embedded in a mat.
- the mat is flexible, ie flexible in at least one direction, in particular the mat is limp.
- the flexible mat has a planar design and has a larger area than the power transmission unit, in particular a multiple of the expansion of the power transmission unit.
- the mat protrudes on all sides beyond the power transmission unit.
- the mat may for example be rectangular, rectangular with rounded corners or in another form.
- the force transmission unit may be embedded in the middle of the surface of the mat in this.
- the power transmission unit may in particular be glued to the mat.
- the power transmission unit is completely enclosed by the mat, ie in particular covered both on the underside of the lower plate, as well as on the upper side of the upper plate with the material of the mat and also laterally enclosed by the mat;
- the flexible mat can thereby 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 for to more evenly distribute the compressive force exerted on the force transfer unit to the patient's thorax and to prevent any edges of the transmission unit from causing injury to the patient.
- the mat may for example 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 is easier and safer on the chest of the patient on which a cardiac massage is to be performed, can be placed.
- the device can be placed more securely, so that the force transmission unit rests more securely on the area of the surface of the thorax on which the pressure is to be exerted during the cardiac massage.
- the shape of the mat may be adapted to physiological features, such as having a mark or cutout for the neck of the patient, so that the mat can be aligned with the patient's neck and facilitates proper placement of the power transmission unit.
- the safety of the application of the device to support a cardiopulmonary resuscitation, in particular a cardiac massage, even when performed by a medical layman can be improved.
- the mat is flexible, an adaptation to different physiological conditions is made possible, so that the device according to the invention can be placed correctly on the thorax independently of the stature, the weight and the sex of the patient. Due to the fact that the mat is flexible, an adaptation to different storage and transport containers can also be made possible.
- the power transmission unit and possibly the control and / or the display device in the flexible mat which may be waterproof, it is also possible in a simple manner to make the device a total waterproof, so that the device under virtually all environmental conditions is functional.
- the at least one perceptible signal can be achieved by triggering the Pointing device is generated by the electronic control device and preferably no mechanical tone generation takes place, the mechanical complexity and space requirements of the device can be reduced and increased reliability and the storage and transport of the device can be facilitated.
- At least the lower plate is deformable for adaptation to the surface of the chest of the patient, ie, under pressure when exerting the force required for cardiac massage, the lower plate conforms to the shape of the surface of the chest in such a way that the force applied to a Compression of the chest is distributed, for example, on a substantially symmetrical to the sternum arranged, circular area with a diameter of about 7 to 12 cm at the front of the sternum.
- the deformability of at least the lower plate will result in a more favorable distribution of the applied force on the surface of the rib cage.
- the upper plate is designed to be deformable in a similar manner, as well as, in the case of a planar design of the force sensor interposed between the lower and the upper plate, the force sensor.
- the power transmission unit is designed to be deformable overall with a rigidity which is greater than that of the flexible mat.
- the lower plate or the power transmission unit is designed to be elastically deformable as a whole.
- the rigidity of the lower plate or of the force transmission unit may be so dimensioned that, when it rests on a base with two opposite edges, it exerts a desired force for the cardiac pressure massage at its center relative to the edges by approximately one or more times yields a few inches.
- the lower and the upper plate may for example each consist of a hard plastic.
- the flexible mat 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 are in particular connected flat to each other.
- the power transmission unit is embedded in the mat such that the lower side 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 lower side of an upper layer of the mat.
- the at least two layers may for example consist of rubber or of a suitable foam.
- the mat comprises at least two preferably planar layers between which the power 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 may be wholly or partially embedded between the at least two preferably planar layers.
- the mat is non-slip on its underside and / or on its upper side and / or formed on its upper side printable or printed.
- the underside of the mat can for example be provided with an anti-slip coating and / or be roughened to allow a safe positioning when resting on the chest of the patient even in the event of contamination, for example with sweat or blood.
- the top of the mat is provided with a non-slip coating and / or roughened to allow a secure placement of one or both hands of the user and a safe exerting the compressive force, even if the top of the mat is dirty or wet.
- instructions for performing cardiopulmonary resuscitation or cardiac massage may be printed on top of the mat.
- markings can be imprinted which make the correct positioning of the force transmission unit easier to recognize and / or facilitate in patients of different body size.
- the device can have a further flexible layer, which is designed, for example, as a film or cloth and which can be placed over the patient's face when the device for a cardiac massage is positioned correctly in order to provide a face mask or a protective mask for to form a ventilation of the patient.
- the further layer may, for example, be glued or removably secured with its edge to an edge region of the mat which comes to rest in the upper region of the thorax and may be laid over the patient's face.
- the further layer may have a shape and / or markings which may additionally assist in aligning the device with the patient's ribcage. As a result, the hygiene and safety in performing a ventilation in addition to the cardiac massage can be improved.
- the mat is formed foldable.
- the mat as a whole can be sufficiently flexible so that a partial area of the mat can be laid by folding over another partial area.
- the mat has several, for example, three subregions which are interconnected via predetermined fold lines. In this way it can be achieved that the mat can be folded, wherein the several sub-areas of the mat can be folded over one another and in this state lie flat on one another and can likewise be unfolded accordingly.
- the subregions of the mat can each have a substantially uniform, but possibly different thickness between the subregions.
- the subregions connected by fold lines may themselves have a higher rigidity, while the mat has a lower rigidity in the fold lines and is flexible with a correspondingly smaller radius.
- the fold lines can be designed, for example, as seam notches and be produced, for example, in such a way that a mat which is otherwise formed continuously with the same material thickness receives a lower material thickness in narrow rectilinear sections by embossing or milling; the fold lines can also be designed, for example, in the manner of foil joints.
- Such a foldable mat will also be referred to as "foldable" hereinafter. Lel one another extending fold lines having interconnected portions, they may be arranged one above the other in a collapsed arrangement, so that in each case two or three portions overlap.
- the mat may, for example, be generally rectangular in overall shape and have two fold lines running parallel to one another and parallel to two opposite edges, which divide the surface of the mat into three approximately equal partial areas; folding this creates an arrangement in which the two lateral subregions each cover the middle subregion.
- the force transmission unit can be embedded in a partial area of the mat, and the control and / or the display device can be embedded in one or more other partial areas. The fact that the mat is foldable or foldable, the storage, packaging, transport and entrainment of the device can be facilitated, for example in a motor vehicle.
- the mat can be dimensioned in folded or collapsed arrangement such that it has the format of a motor vehicle first-aid kit according to DIN 13157 and fits in this form in this;
- the mat can be unfolded or unfolded in two easy steps.
- Such a trained device can easily be carried for example in such a first aid kit to be immediately and easily available in an accident.
- control device has a sleep mode and a work mode, wherein in idle mode the energy consumption of the control device is minimized and in particular the force sensor and the display device are not operated, while in the work mode substantially all functions of the device are activated.
- the device has sensor means, on the basis of the signal of which the control device is automatically displaced from the idle mode into the working mode when the mat is unfolded or unfolded.
- the sensor means may be formed, for example, as a magnetic sensor or as a contact sensor.
- the device may comprise a switch, by the actuation of which the control device is switched on or is put out of the idle mode into the working mode.
- the control device is set up such that only a single use of the device is possible.
- the predetermined maximum period of inactivity is chosen such that it can be safely assumed that a resuscitation has ended, for example 15 minutes or one hour.
- a seal may be attached to the device or to a packaging of the device, which must be destroyed during unpacking or unfolding of the device and thus makes the use already made recognizable.
- the control means is arranged such that the display device in response to a maximum of the detected force exerted on the force transmission unit, a minimum of force, a difference between a maximum and a minimum of the force and / or a frequency of fluctuation of the detected Force is controlled.
- the control device can in particular be designed to continuously detect the pressure force exerted on the force transmission unit by recording and further 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 and thus pressure surges can be identified.
- a relative maximum and a relative minimum can be determined within a full period of a periodic signal whose frequency corresponds to a predetermined frequency of the pressure surges to be exerted during a cardiac massage.
- a force amplitude can be determined by differentiation between the maximum and the minimum, wherein the frequency is predetermined. But it can also be determined from the time course of the sensor signal, a frequency of the pressure pulses actually applied.
- the display device can be designed to generate a signal which is differently formed as a function of the detected maximum force, the minimum force, the force amplitude and / or the frequency of the fluctuation of the force or pressure surges, for example by generating tones of different loudness and / or different pitch or light signals of different brightnesses and / or colors; Preferably, a plurality of such signals, which can be perceived via different perception channels, can be generated simultaneously.
- the display device may comprise a suitable tone generator and / or a suitable light source.
- a suitable light source may for example consist of a plurality of light emitting diodes of different colors, such as red, green and blue.
- 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 setpoint values is carried out and the display device in response to a match of the maximum value of the force in a pressure surge, the minimum value of the force in a pressure surge, the force amplitude and / or the frequency of the pressure surges is controlled with one or more desired values or target ranges.
- control device may comprise first storage means in which predetermined setpoint values and / or setpoint ranges for a pressure surge, the minimum force value in a pressure surge, for the force amplitude and / or for the frequency of successive pressure surges are stored Comparison can be accessed with currently detected or determined from the sensor signal values.
- the control device can therefore be set up in particular in such a way that the emitted signal makes it recognizable to the display device whether or not the pressure surges exerted by a user in terms of strength, amplitude and / or frequency coincide with target areas in the case of cardiac massage.
- the signal of the display device can be configured in such a way that a direction of the deviation can be recognized so that a user can recognize whether he is increasing or decreasing the maximum force, increasing or decreasing the amplitude of the pressure surges and / or increasing the frequency of the pressure surges or decrease in order to perform an optimal cardiac massage.
- the safety of performing a cardiac massage can also be improved by a medical layman.
- the device according to the invention can be adapted in a simple manner to the requirements applicable to different patient groups.
- an inventive device for the cardiopulmonary resuscitation of children or for adults can be optimized without further changes being necessary.
- control device may be set up in order to emit a signal which indicates the necessity of ventilating the patient in addition to, or alternately with, the cardiac pressure massage.
- a signal is generated which indicates the need for ventilation.
- the device according to the invention is equipped with a self-sufficient power supply, in particular with an electrical energy storage, such as a battery or a rechargeable battery.
- an electrical energy storage such as a battery or a rechargeable battery.
- the control means comprises second storage means and is arranged to store in the second storage means data representing the detected values of force applied to the power transmission unit / or represent their time course;
- the device may be formed as described above.
- the second storage means may be formed with the first storage means as a single memory.
- the stored data can be available for subsequent evaluation and serve as a basis for the decision on further measures, for example, about the further care after a successful resuscitation.
- the stored data can provide inferences on the effect of the performed cardiac massage, whereby, for example, the learning effect in training a cardiopulmonary resuscitation can be increased with a device according to the invention.
- the second storage means can be wired and / or wirelessly readable, so that the data stored therein are available for display, evaluation and / or storage in a reading device.
- the device may include means for transmitting stored data such as via RFID technology, Bluetooth or other wireless transmission paths. This allows, for example, medical professionals to be able to determine immediately when arriving at an accident site, what kind and effect are the already carried out by laymen resuscitation measures and agreed to take further action, especially with regard to cardiac massage and / or ventilation.
- at least some of the stored data can be displayed by means of the display device.
- control device can be set up in order to control the display device in such a way that an input signal can be inputted by means of a switch or even if the force is applied to the force transmission unit such that a signal is generated which makes important stored data recognizable.
- an input signal can be inputted by means of a switch or even if the force is applied to the force transmission unit such that a signal is generated which makes important stored data recognizable.
- the control device can be set up in order to control the display device in such a way that an input signal can be inputted by means of a switch or even if the force is applied to the force transmission unit such that a signal is generated which makes important stored data recognizable.
- the controller of a device configured as described above is automatically shifted from a sleep mode to a work mode, a push force applied to the force transfer unit with the load sensor force sensor detected, the display device of the device controlled by the control device based on the detected force and stored data on the detected force and / or the time course in a memory of the control device.
- the stored data can be, for example, a time elapsed since a first force application or a first pressure surge, a maximum force of each pressure surge, and / or a frequency of the detected pressure surges.
- the display device is dependent on a maximum force exerted on the power transmission unit, a minimum force exerted on the power transmission unit, a difference between the maximum and minimum force and / or a frequency of fluctuation of the force exerted on the power transmission unit controlled, in particular depending on a match with a respective setpoint or a desired range.
- the memory of the control device is read out by wire and / or wireless.
- these are first removed from a packaging into which the device can be welded. If the package has a seal, this is destroyed here, so that it can be seen that the device has been used.
- the device is unfolded by the superimposed portions of the mat are disassembled.
- a sensor signal is generated by which the control device of the device is automatically set from a sleep mode to a work mode.
- the visual and audible indicators can then be activated immediately as soon as the working mode is reached, or it may be necessary to press a power button.
- the device will open placed on the chest of a patient and aligned with the help of the printed on the top of the mat or formed by the shape of the mat marks.
- a pressure area marked on the upper side of the device comes to rest above that area of the thorax of the patient to whom the compression force must be exerted during a cardiac massage.
- the power transmission unit is embedded. As soon as the user exerts a compressive force in 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 predetermined desired force for the cardiac massage is not achieved, this can be indicated by a corresponding tone and a colored light signal, for example a red light signal. If the applied force is within the target range, this can be indicated by a green light.
- the desired frequency of the pressure surges to be applied can be predetermined by another light or a sound, or the actual frequency of the applied pressure surges can be measured and a display can be made which makes it clear whether the frequency is too low, in a desired range or too is high.
- a signal may be generated indicating that ventilation is required. Thereafter, the chest compressions continue.
- a storage and a readout of the detected force values, in particular the time course of the pressure force exerted, may be advantageous in support of a decision on the further care of the patient after the end of the use of the device according to the invention.
- FIG. 1 shows a first embodiment of a device according to the invention in plan view in the unfolded state.
- FIG. 2 shows the device according to FIG. 1 in the folded state in an oblique view
- FIG. 3a and 3b a power transmission unit of the apparatus of Figure 1 in plan view and in a sectional view ..;
- FIGS. 5a and 5b show an electronic unit of the device according to FIG. 1 in plan view and in a sectional illustration;
- FIG. 6 shows the device according to FIG. 1 in an application position;
- FIG. 5a and 5b show an electronic unit of the device according to FIG. 1 in plan view and in a sectional illustration;
- FIG. 6 shows the device according to FIG. 1 in an application position;
- FIG. 5b shows an electronic unit of the device according to FIG. 1 in plan view and in a sectional illustration;
- FIG. 6 shows the device according to FIG. 1 in an application position;
- FIG. 7 shows a second embodiment of a device according to the invention in plan view in the unfolded state;
- Fig. 8 shows the device according to Fig. 7 in an application position.
- a device according to the invention for assisting cardiopulmonary resuscitation has an approximately rectangular overall shape, wherein the side lengths a, b are for example approximately 44 cm or approximately 24 cm.
- the device 1 comprises a continuous flexible mat 2, which by two parallel to each other and parallel to the narrow sides of the rectangle extending crease lines 3, 4 in three almost equal sections 5, 6, 7 is divided. Overall, the mat 2 is sufficiently flexible to conform to the surface of the thorax of a patient on which the device 1 is placed.
- the fold lines 3, 4 are thinned out by embossing or milling and thereby provided with a relation to the sub-areas 5, 6, 7 increased flexibility.
- the device 1 further comprises a power transmission unit 10, which is embedded in the middle of the middle portion 6 of the mat 2 in this. Furthermore, in Fig. 1 embedded in the mat 2 electronic unit 20 with a battery unit 21 and two cooperating push-button elements 22, 23 indicated (see below).
- the battery unit 21 serves for the electrical power supply of the electronic unit 20; For this purpose, for example, a button cell is used as an electrical energy storage in the battery unit 21.
- electrical 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 electronic unit 20. As can be seen in FIG. 1, the lines 25, 27 run through one or more fold lines 3, 4 and are of correspondingly flexible design.
- the lines 25, 27 may extend in sections along the fold lines 3, 4 in order to improve the foldability of the mat 2.
- the partial areas 5, 6, 7 of the mat can be superposed by folding along the fold lines 3, 4.
- the device 1 is shown in the folded state.
- a first portion 5 is folded at the fold line 2 on the second, central portion 6 of the mat 2 and rests on this.
- the third subregion 7 is folded along the fold line 4 over the superposed subregions 5, 6.
- the middle part 6 and the third part 7 have approximately equal edge lengths, while the first part 5 is in the direction of the long edge of the mat 2 is slightly shorter to come to rest without wrinkles within the collapsed arrangement of FIG.
- the power transmission unit 10 is formed overall approximately in the form of a circular disk with a diameter D of approximately 5 to 12 cm (see FIG. As shown in Fig. 3b in cross-section, the power transmission unit 10 of a lower plate 11, an upper plate 12 and an intermediate force sensor 13.
- the plates 11, 12 are both formed as flat circular discs, which are arranged congruent to each other and on the also flat trained force sensor 13 are interconnected.
- the plates 1 1, 12 may consist of a hard plastic and have a thickness of about 0.3 to 1.4 mm.
- the plates 1 1, 12 and the force sensor 13 may be flexible, so that the power transmission unit 10 as a whole is flexible, in particular elastically flexible and has a stiffness which corresponds approximately to that of a conventional credit card, for example.
- the force sensor 13 which may be a piezoelectric or a resistive force sensor, for example, has a measuring range of 0.1 to 300 Newton 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 surface with a side length of about 4 cm and has an accuracy of ⁇ 3%, an operating temperature range of -30 to +70 ° C, a response time of about 5 ⁇ and a lifetime of about one million Pressure cycles, which is usually sufficient for the present application.
- the power 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 each other, for example by gluing.
- the lower and the upper layer 8, 9 are made for example of rubber or of a suitable foam and each have a thickness of about 2 mm.
- the force sensor unit 10 is embedded between the lower layer 8 and the upper layer 9 and bonded 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 electronic unit 20 (see Fig. 1), which is also embedded between the lower layer 8 and the upper layer 9 of the mat 2 is not shown in Fig. 3b.
- the underside 14 of the lower layer 8 is non-slip coated or roughened to ensure a secure and firm positioning of the To allow mat 2 on the patient's chest.
- the top 15 of the top layer is also slip-resistant coated or roughened and is printable and printed with a quick guide to using the device in cardiopulmonary resuscitation and with markings for proper positioning.
- the device 1 is shown in the unfolded state, in the folded state and at the beginning of the unfolding in a sectional view, wherein only the mat 2 and the push-button elements 22, 23 are shown.
- a first push-button element 22, which comprises a bush is arranged in the lower layer 8 of the mat 2 in the first partial region 5 near the fold line 3.
- a cooperating with the first push-button element 22 second push-button element 23 which includes a matching head in the socket is disposed in the upper layer 9 of the mat 2 in the third portion 7 near the edge of the mat 2.
- the first portion 5 is placed over the central portion 6 and the third portion 7 in turn folded over the first portion 5.
- the second push-button element 23 comes into contact with the first push-button element 22, so that the head engages in the socket and the push-button elements 22, 23 are connected to one another.
- the three sections 5, 6, 7 are folded over one another in the manner described and the push button with the push-button elements 22, 23 closed.
- This creates a compact and easily transportable arrangement see also Fig. 2).
- a circuit is closed via the electric wires 24, 25 through which the push button members 22, 23 are connected to the electronic unit 20 (see FIG Fig. 1).
- the device 1 is in the folded state, which is shown in Fig. 4b, and thus is not in use.
- the electronics unit 20 is in a sleep mode, which is connected to a very low power consumption and in which only the circuit is monitored by the push-button elements 22, 23.
- the head of the second Push button element 23 pulled out of the socket of the first push button member 22 and the circuit opened; this is shown in Fig. 4c.
- the opening of the circuit is registered by the electronic unit 20 in the sleep mode and places 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 plan view and in a cross section through the mat 2 in the first subregion 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 sounds 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 (LEDs, light-emitting diodes) 34, 35, 36, which generate light of different colors with sufficient brightness for perception in bright daylight, for example the LED 34 red light, the LED 35 green light and the LED 36 blue light.
- LEDs light-emitting diodes
- the tone generator 31 and the LED unit 33 each have a thickness of about 2 to 3 mm.
- the microcontroller 32 is designed to receive 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 as well as a RAM memory in which nominal values for the force of the pressure surges to be applied during heart pressure massage and the frequency of the pressure surges are stored.
- the microcontroller 32 comprises a further supply, in which the measured values of the force actually exerted via the force sensor 13 together with corresponding time data supplied by a clock or a clock of the microcontroller 32, and thus the chronology of the cardiac massage performed get saved.
- the microcontroller 32 can be assigned transmission means for 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.
- a receiving device which can be, for example, a smartphone with a corresponding app.
- Fig. 5a are further embedded in the mat 2 electrical lines 24, 25, via which the circuit can be closed by the push-button elements 22, 23, the line 26, via which the electronic unit 20 is supplied from the battery unit 21 with electrical energy , and the line 27, via which the microcontroller drives the force sensor 13 of the power transmission unit 10 and receives the sensor signal, indicated (see FIG. 1).
- the electronic unit 20 is so 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 that the circuit board 30 between the upper layer 9 and the lower Layer 8 is embedded and the tone generator 31 and the LED unit 33 flush with the upper surface 15 or slightly beyond this protrude.
- the printed circuit board 30 may be glued to the upper layer 9 and the lower layer 8.
- the invisible in Fig. 5b electrical lines 24, 25, 26, 27 are also 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 in the unfolded state on the chest of a patient 40.
- that region of the mat 2 into 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 ribcage.
- the area in which the power transmission unit 10 is embedded is marked in color on the upper side of the mat 2. Furthermore, there are markings which facilitate the correct alignment of the device 1, for example, on the neck 41 of the patient 40.
- the device 1 For the application of the device 1, this is removed from a packaging, in which it is welded in folded or collapsed state (see Fig. 2, Fig. 4b).
- the device 1 is then unfolded or unfolded according to FIG. 4c, the push-button elements 22, 23 being separated from one another and the circuit closed via them and the lines 24, 25 being opened.
- the microcontroller 32 is thereby put in the working mode, and the sound generator 31 and the blue LED 36 are for generating acoustic and optical signals in a rhythm corresponding to the target frequency of the pressure surges in a cardiac massage, driven; It can be provided that the signals are delayed, for example, only about 2 seconds after the unfolding or folding of the device 1, are discharged.
- an optical and an acoustic signal with a short time duration are generated at the same time with a repetition frequency of about 100 / min.
- the device 1 is placed on the thorax 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 is exerted in the cardiac massage must come to rest; the shape of the mat 2 and possibly further markings on the mat 2 help in this case for correct positioning.
- the user then begins with the cardiac massage and exerts a pressure force on the marked on the top 15 of the mat 2 area.
- the applied pressure force is continuously detected by the force sensor 13 of the power transmission unit 10, and after each end of a full period of the clock signal of about 100 / min, the maximum and the minimum of the pressure force detected within the period are determined. If the determined maximum lies above a first desired value, for example 220 N, and the determined minimum is below a second desired value, for example 50 N, then the green LED 35 is actuated. 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 conditions mentioned, an audible or visual signal is generated indicating that ventilation is required. After a predetermined time, another signal is emitted indicating that the chest compressions should continue.
- a first desired value for example 220 N
- a second desired value for example 50 N
- the time sequence of the force exerted or the pressure surges are stored in the RAM memory of the microcontroller 32. If, after a resuscitation carried out by a layperson, medical specialists arrive, the stored data are read out wirelessly and displayed on a reading device, such as a smartphone, and are available as the basis for the decision on further measures. After for a longer period no pressure surges have been exercised more, the tone generator 31 and the LED unit 33 are no longer driven by the microcontroller 32, not even after reconnecting and disconnecting the push-button elements 22, 23. The microcontroller 32 is then only for possibly re-reading the stored Data available.
- a white LED 51 is provided for displaying a predetermined tact of the pressure surges to be applied by a user in a cardiac massage, and an LED unit 52 for indicating whether or not the applied force is within a target range of the cardiac massage.
- the LED unit 52 comprises a red and a green LED, the green LED being lit when the force applied is within the desired range, and the red when the force is too low;
- a further LED can also be provided, which is activated when the force exerted is too high, which, however, 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 across the chest of a patient and has markings 54 on the central portion 6 for alignment with the neck of the patient.
- the device 50 shown in Fig. 7 is formed in a similar manner as the device 1 described above and is applied in a corresponding manner.
- the correct position of the device 50 or the mat 2 on the thorax of a patient 40 is such that the neck 41 of the patient 40 lies above the central portion 6.
- the mat has 2 markings 54 indicating the correct positioning of the mat 2 relative to the neck 41 of the patient 40;
- a print 55 is applied to the top of the mat 2, which represents the correct positioning of the device 50.
Landscapes
- 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102015006540.8A DE102015006540A1 (en) | 2015-05-27 | 2015-05-27 | Device for assisting a user in cardiopulmonary resuscitation |
PCT/EP2016/000851 WO2016188629A1 (en) | 2015-05-27 | 2016-05-23 | Apparatus and method for assisting a user during a cardiopulmonary resuscitation |
Publications (2)
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EP3302395A1 true EP3302395A1 (en) | 2018-04-11 |
EP3302395B1 EP3302395B1 (en) | 2020-04-29 |
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EP16726482.9A Active EP3302395B1 (en) | 2015-05-27 | 2016-05-23 | Apparatus and method for assisting a user during a cardiopulmonary resuscitation |
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US (1) | US20180161238A1 (en) |
EP (1) | EP3302395B1 (en) |
JP (1) | JP2018519137A (en) |
KR (1) | KR20180014048A (en) |
CN (1) | CN107847394A (en) |
CA (1) | CA2984108A1 (en) |
DE (1) | DE102015006540A1 (en) |
MX (1) | MX2017015184A (en) |
SG (1) | SG11201709317XA (en) |
WO (1) | WO2016188629A1 (en) |
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CN110326035A (en) | 2017-01-24 | 2019-10-11 | 拉尔多医疗公司 | Communication means during CPR training system and CPR training |
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 (en) | 2018-10-18 | 2020-04-28 | 강원대학교산학협력단 | Portable cardiopulmonary resuscitation assist apparatus |
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 (en) | 2022-02-02 | 2023-08-03 | Innotas AG | Method for calibrating an FSR sensor and apparatus for performing cardiac resuscitation |
CN114886758B (en) * | 2022-04-28 | 2024-07-05 | 东南大学 | Wearable doctor action acquisition device for cardiopulmonary resuscitation and use method |
CN115634140B (en) * | 2022-12-23 | 2023-03-17 | 苏州尚领医疗科技有限公司 | Cardio-pulmonary resuscitation feedback system and feedback instrument |
Family Cites Families (10)
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US4355634A (en) * | 1980-12-31 | 1982-10-26 | Spencer I. Kanter | Locator device for external cardiac compression during cardiopulmonary resuscitation |
CA1245925A (en) * | 1988-03-21 | 1988-12-06 | Carla Hanson | Aid for cardio-pulmonary resuscitation |
US5645522A (en) * | 1991-04-17 | 1997-07-08 | The Regents Of The University Of California | Devices and methods for controlled external chest compression |
US5496257A (en) | 1994-04-22 | 1996-03-05 | Kelly Medical Products, Inc. | Apparatus for assisting in the application of cardiopulmonary resuscitation |
AU2001234846A1 (en) * | 2000-02-04 | 2001-08-14 | Zmd Corporation | Integrated resuscitation |
NO317846B1 (en) | 2002-12-23 | 2004-12-20 | Laerdal Medical As | Device for placement on the chest of a patient, to interact with the hands of a person performing chest compressions. |
WO2005043868A1 (en) * | 2003-10-31 | 2005-05-12 | Matsushita Electric Industrial Co., Ltd. | Connection device, electronic apparatus with the same, and folding portable terminal device |
DE202007009575U1 (en) * | 2007-07-09 | 2008-11-13 | Brand, Volker | Device for pushing in a human or animal body and system with a medical device and device |
WO2011100694A1 (en) * | 2010-02-12 | 2011-08-18 | Advanced Circulatory Systems, Inc. | Guided active compression decompression cardiopulmonary resuscitation systems and methods |
DE102013006469A1 (en) | 2012-11-08 | 2014-05-08 | Sebastian MÖSSMER | APPARATUS FOR CONTROLLING HEART-LUNG REANIMATION AT HEART REST IN AN INTEGRATED DEFIBRILLATOR |
-
2015
- 2015-05-27 DE DE102015006540.8A patent/DE102015006540A1/en not_active Withdrawn
-
2016
- 2016-05-23 KR KR1020177037524A patent/KR20180014048A/en unknown
- 2016-05-23 SG SG11201709317XA patent/SG11201709317XA/en unknown
- 2016-05-23 JP JP2018513719A patent/JP2018519137A/en active Pending
- 2016-05-23 US US15/577,004 patent/US20180161238A1/en not_active Abandoned
- 2016-05-23 WO PCT/EP2016/000851 patent/WO2016188629A1/en active Application Filing
- 2016-05-23 MX MX2017015184A patent/MX2017015184A/en unknown
- 2016-05-23 CA CA2984108A patent/CA2984108A1/en not_active Abandoned
- 2016-05-23 CN CN201680043702.5A patent/CN107847394A/en active Pending
- 2016-05-23 EP EP16726482.9A patent/EP3302395B1/en active Active
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JP2018519137A (en) | 2018-07-19 |
CA2984108A1 (en) | 2016-12-01 |
KR20180014048A (en) | 2018-02-07 |
WO2016188629A1 (en) | 2016-12-01 |
DE102015006540A1 (en) | 2016-12-01 |
SG11201709317XA (en) | 2017-12-28 |
MX2017015184A (en) | 2018-04-13 |
EP3302395B1 (en) | 2020-04-29 |
US20180161238A1 (en) | 2018-06-14 |
CN107847394A (en) | 2018-03-27 |
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