Emergency medical device for chest compressions and defibrillation of a patient, and method for correcting loss of chest compression depth in a patient.

Abstract

A method for correcting the disappearance of the chest compression depth of a patient according to an embodiment of the present invention includes: a) After setting, in a control unit, a value of the chest compression start position of the patient at which the chest compression of the patient is started at the lower end of a piston disposed above the chest of the patient, expanding or contracting the piston so that the lower end of the piston moves to the chest compression start position according to the value of the chest compression start position of the patient; b) Applying, in the control unit, a value of the initial chest compression depth, which is a moving length value of the piston from the chest compression start position of the patient toward the upper side of a support plate that supports the patient's back, and a critical value of the chest compression depth, expanding and contracting the piston so that chest compression is performed, and during the progress of the chest compression, sensing a change in the chest shape of the patient and updating the chest compression start position of the patient; c) A step of comparing and determining by the control unit a combined value of the isolation distance between a cap fastened to the lower end of the piston and the chest of the patient and the value of the initial chest compression depth with the critical value of the chest compression depth; and d) Expanding and contracting the piston so that the cap reciprocates according to the value of the initial or updated chest compression depth, so that chest compression by the cap is performed.

Description

Technical Field

[0002] , ,

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[0003]

[0001] The present invention relates to an emergency treatment device for chest compression and defibrillation of a patient and a method for correcting the disappearance of chest compression depth. More specifically, the present invention relates to an emergency treatment device for chest compression and defibrillation of a patient, and a method for correcting the disappearance of chest compression depth caused by chest shape deformation generated during the process of compressing the chest of the patient with a cap provided on the emergency treatment device, so as to ensure that the chest compression of the patient is accurately performed.

Background Art

[0002] Cardiopulmonary resuscitation (CPR) is a method of repeating a series of processes such as chest compression, airway maintenance, and artificial respiration. More specifically, when a patient suspected of cardiac arrest occurs, after confirming the safety of the scene and the reaction and breathing status of the fallen person, request help from the surrounding people and report to the emergency rescue agency as soon as possible. Then, place the heel of the hand and overlap both hands, and compress 30 times straightening the elbows at the center of the chest (avoiding the sternum and the center of the nipples), and the compression depth is less than 4 - 6 cm. After chest compression, ensure the airway and confirm that the chest rises while performing artificial respiration twice at a rate of 1 time per 1 - 25 seconds, and perform chest compression and artificial respiration alternately twice.

[0003] However, in the case of the general public, even if they receive cardiopulmonary resuscitation education, when a cardiac arrest patient occurs, there is a problem that due to unfamiliarity with cardiopulmonary resuscitation, the burden on rib injuries, and the non - constancy of chest height for each patient, it is impossible to accurately grasp the compression depth.

[0004] Various types of cardiopulmonary resuscitation (CPR) devices are known. One such device is powered by compressed air or a breathing gas (Jolife AB; Lucas™, Lund, Sweden). A unique advantage of such CPR devices is that they are lightweight and portable. Another advantage is the elastic nature of compressed air, which allows gas-driven CPR devices to cause less chest injury to the patient than devices with rigid compression means. Known devices can be used as emergency equipment in life-saving situations. Furthermore, known devices are supplied with driving gas from a hospital air supply line suitable for uninterrupted CPR blows when the patient is admitted to the hospital.

[0005] However, the aforementioned cardiopulmonary resuscitation device lacks a function to analyze electrocardiograms (ECGs), making it difficult to accurately determine whether a patient has experienced cardiac arrest.

[0006] Thus, since cardiopulmonary resuscitation (CPR) devices have the problem of not being able to accurately confirm whether a patient's heart has stopped, they need to be implemented in a device that integrates an automated external defibrillator (AED), which is a device that analyzes the electrocardiogram in emergency situations, and used in emergency situations.

[0007] On the other hand, a device that combines a cardiopulmonary resuscitation device and an automated external defibrillator has been published as a registered patent of the Republic of Korea, No. 10-1956053 (Title of invention: Cardiopulmonary resuscitation device in which the depth of compression applied during chest compressions can be adjusted, hereinafter referred to as "prior literature").

[0008] The aforementioned prior art describes a cardiopulmonary resuscitation (CPR) device that allows for easy CPR by adjusting the chest compression depth of the chest compression unit through length adjustment of a hydraulic frame and a height adjustment frame, which are used to position the chest compression unit in the upper region toward the patient's chest.

[0009] However, the aforementioned prior literature had a problem in that if the patient's chest was compressed in its initial state before chest compression, the chest would be compressed and its shape would deform, and the chest compression depth would disappear, resulting in an error in chest compression depth. Such errors would make it difficult to perform cardiopulmonary resuscitation accurately at the chest compression site, thus making it difficult to provide the effect of the prior literature in that cardiopulmonary resuscitation could be easily performed. [Overview of the project] [Problems that the invention aims to solve]

[0010] The object of the present invention is to provide a method for correcting the loss of chest compression depth in a patient, which occurs when the patient's chest is compressed with a cap provided on an emergency treatment device for chest compression and defibrillation, thereby correcting the loss of chest compression depth due to changes in the shape of the chest that occur during the process of compressing the patient's chest, and thereby ensuring that chest compression is performed accurately.

[0011] Another object of the present invention is to provide a method for correcting the loss of chest compression depth in a patient, thereby improving the accuracy and stability of the patient's chest compression and defibrillation process and improving ease of use for the user when performing chest compression and defibrillation on a patient. This method automates the process of chest compression and defibrillation on a patient, and if the sum of the set initial chest compression depth and isolation distance is less than the critical value of the compression depth, compression is performed at the existing compression depth; if it exceeds the critical value, chest compression is performed at the corrected compression depth.

[0012] Another object of the present invention is to provide a method for correcting the disappearance of chest compression depth in a patient, which can periodically sense whether or not there is a change in the starting position of chest compressions, notify the user audibly / visually of changes in the patient's chest shape, and update the starting position of chest compressions.

[0013] However, the technical problems that this invention aims to solve are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those with ordinary skill in the art to which this invention pertains from the following description. [Means for solving the problem]

[0014] An emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention, which is a technical means for achieving the above-mentioned objective, comprises a support plate for supporting the patient's back, a support base with one end and the other end connected to both edges of the support plate, a hood connected to one side of the support base and positioned above the patient's chest, to which a piston for compressing the patient's chest is connected, and a value for the patient's chest compression start position at the lower end of the piston, after which the piston is expanded or contracted so that the lower end of the piston moves to the chest compression start position according to the chest compression start position value, and from the chest compression start position toward the upper side of the support plate The invention is characterized by including a control unit that expands and contracts the piston by applying the value of the initial chest compression depth, which is the travel length value of the piston, and a critical value of the chest compression depth, in order to perform chest compression; senses a change in the shape of the patient's chest during chest compression, updates the starting position of the patient's chest compression; compares and determines the value obtained by adding the distance between the cap fastened to the lower end of the piston and the patient's chest and the value of the initial chest compression depth, with the critical value of the chest compression depth, and expands and contracts the piston so that the cap reciprocates in accordance with the initial or updated value of the chest compression depth, thereby performing chest compression by the cap.

[0015] A method for correcting the loss of chest compression depth according to one embodiment of the present invention, which is performed on an emergency treatment device for chest compression and defibrillation of a patient, includes the steps of: a) setting the value of the patient's chest compression start position at the lower end of a piston positioned on the upper side of the patient's chest in a control unit, and then expanding or contracting the piston so that the lower end of the piston moves to the chest compression start position according to the value of the patient's chest compression start position; and b) setting the initial chest compression depth value, which is the length of movement of the piston from the patient's chest compression start position toward the upper side of the support plate supporting the patient's back, and the chest compression depth The method is characterized by including the steps of: a) applying a critical value to expand and contract the piston to perform chest compression, sensing a change in the shape of the patient's chest during chest compression and updating the starting position of the patient's chest compression; c) the control unit compares and determines a value equal to the combined distance between the cap fastened to the lower end of the piston and the patient's chest and the initial chest compression depth with a critical value for the chest compression depth; and d) expanding and contracting the piston so that the cap reciprocates in accordance with the initial or updated chest compression depth value, thereby performing chest compression by the cap. [Effects of the Invention]

[0016] The present invention has the effect of enabling accurate chest compression of a patient by correcting the loss of chest compression depth due to changes in chest shape that occur during the process of compressing the patient's chest with a cap provided on an emergency treatment device for chest compression and defibrillation of a patient.

[0017] Furthermore, the present invention automates the process of chest compression and defibrillation for patients. If the sum of the set initial chest compression depth and isolation distance is less than the critical value of the compression depth, compression is performed at the existing compression depth. If it exceeds the critical value, chest compression is performed at a corrected compression depth. This improves the accuracy and stability of the chest compression and defibrillation process for patients, thereby improving ease of use for the user during chest compression and defibrillation.

[0018] Furthermore, the present invention can periodically detect whether the chest compression start position is changed, audibly / visually notify the user of the change in the patient's chest shape, and update the chest compression start position, thus ensuring the convenience for the user.

[0019] However, the effects obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those with ordinary knowledge in the technical field to which the present invention pertains from the following description.

Brief Description of the Drawings

[0020] [Figure 1] FIG. 1 is a perspective view of a partial configuration of an emergency treatment device for chest compression and defibrillation of a patient according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic view of a partial configuration of the emergency treatment device for chest compression and defibrillation of the patient in FIG. 1. [Figure 3] FIG. 3 is a block diagram showing a unit provided in a hood according to an embodiment of the present invention. [Figure 4] FIG. 4 is a view showing a storage unit provided in an emergency treatment device for chest compression and defibrillation of a patient according to an embodiment of the present invention and the stored information. [Figure 5] FIG. 5 is a view showing a sensor provided in an emergency treatment device for chest compression and defibrillation of a patient according to an embodiment of the present invention. [Figure 6] FIG. 6 is a view showing a notification unit provided in an emergency treatment device for chest compression and defibrillation of a patient according to an embodiment of the present invention. [Figure 7] FIG. 7 is a view showing a symmetric profile according to an embodiment of the present invention. [Figure 8] FIG. 8 is a perspective view of a cap according to an embodiment of the present invention. [Figure 9] FIG. 9 is a cross-sectional view taken along line A-A in FIG. 8. [Figure 10] FIG. 10 is a perspective view showing a first member according to an embodiment of the present invention. [Figure 11] FIG. 11 is a plan view showing a first member according to an embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view taken along line B-B in FIG. 11. [Figure 13] FIG. 13 is a flowchart showing the process of a method for correcting the disappearance of the chest compression depth of a patient according to an embodiment of the present invention. [Figure 14] FIG. 14 is a diagram for explaining the chest compression start position of a patient according to an embodiment of the present invention. [Figure 15] FIG. 15 is a diagram showing the chest shape in a state where the lower end of a cap according to an embodiment of the present invention is in contact. [Figure 16] FIG. 16 is a diagram showing the chest shape in a state where the disappearance of the chest compression depth has occurred during the chest compression process by a cap according to an embodiment of the present invention. [Figure 17] FIG. 17 is a diagram for explaining a band connected to a support plate according to an embodiment of the present invention. [Figure 18] FIG. 18 is a diagram showing the usage state of a band according to an embodiment of the present invention.

MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those having ordinary knowledge in the technical field to which the present invention belongs can easily implement them. However, the description of the present invention is merely an embodiment for structural and functional explanations, and the scope of rights of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously modified and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. Also, the objects or effects presented in the present invention do not mean that a specific embodiment should include all of them or should include only such effects, so the scope of rights of the present invention should not be construed as being limited thereby.

[0022] The meanings of the terms used in this invention are understood as follows:

[0023] Terms such as "first" and "second" are used to distinguish one component from another, and these terms should not limit the scope of rights. For example, the first component may be named the second component, and similarly, the second component may be named the first component. When a component is "linked" to another component, it should be understood that it may be directly linked to that other component, but there may also be other components in between. Conversely, when a component is "directly linked" to another component, it should be understood that there are no other components in between. On the other hand, other expressions that describe the relationship between components, namely "between" and "immediately between," or "adjacent to" and "directly adjacent to," should be analyzed in the same way.

[0024] A singular expression includes plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as "includes" or "possesses" should be understood as intending to specify the existence of the described feature, number, step, action, component, part, or combination thereof, without excluding the existence or possibility of adding one or more other features, numbers, steps, actions, components, parts, or combination thereof.

[0025] All terms used herein, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant art, and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined herein.

[0026] Figure 1 is a perspective view of a partial configuration of an emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention, Figure 2 is a schematic diagram of a partial configuration of the emergency treatment device for chest compression and defibrillation of a patient in Figure 1, and Figure 3 is a block diagram of a unit provided in a hood according to one embodiment of the present invention.

[0027] As shown in Figures 1 to 3, an emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention (hereinafter referred to as the "emergency treatment device") includes a support plate 100, a support base 200, and a hood 300.

[0028] The support plate 100 is shaped to support the back of a patient experiencing a condition such as acute cardiac arrest or ventricular fibrillation, and includes a sliding guide 110 for sliding a support base 200 and hood 300 that are fused with a cardiopulmonary resuscitation device and an automated external defibrillator, a stopper 120 for fixing the position of the support base 200 and hood 300, and a band 130 for wrapping around the upper part of the patient's arm, including the elbow, to secure the patient's arm.

[0029] The support plate 100 has an internal space on its side that allows the frame 115, which is provided on the sliding guide 110, to be retracted in order to adjust the height of the piston 310.

[0030] The sliding guides 110 are provided on both edges of the support plate 100, and one end of the support base 200 is slidably connected to the other end, so that the support base 200 can slide forward or backward.

[0031] As shown in Figure 2(b), which is an enlarged view of area A in Figure 2(a), the sliding guide 110 is provided with a frame 115 that retracts into or pulls out from inside the support plate 100, thereby adjusting the distance between both ends of the support base 200, and thereby adjusting the height of the piston 310.

[0032] The reason for allowing the height of the piston 310 to be adjusted is to prevent situations where the piston 310 cannot compress the chest compression points of a particular patient, as each patient has a different body shape.

[0033] The stopper 120 is provided on the sliding guide 110 and has a shape that allows it to be fastened to one end and the other end of the support base 200. By fastening to one end and the other end of the support base 200, the position of the support base 200 and the hood 300 is fixed.

[0034] As shown in Figures 17 and 18, the band 130 is supported by the support plate 100 on the back and wraps around the upper part of the patient's arm, including the elbow, while chest compression is performed, and is provided with a cuff 131 for securing the patient's arm (D).

[0035] The cuff 131 is equipped with a D-ring 132 and an opening 133, and on its inner surface, detachable Velcro straps 131a and 131b are provided on one side so as to enclose the patient's arm (D) through the D-ring 132 and to maintain the state of enclosing the patient's arm (D).

[0036] Although not shown in the figures, such cuffs 131 are preferably connected to the support plate 100 by being wound onto an axis formed at the lower part of the support plate 100, and are positioned in pairs on the sides of the support plate 100 so as to completely enclose a pair of patient arms (D).

[0037] Furthermore, the cuff 131 has an opening 133 with a diameter into which the user's hand can be inserted, so that the user can simultaneously grasp the support plate 100 and the cuff 131. The user can grasp the support plate 100 to which the cuff 131 is connected by inserting their hand into the groove formed in the lower part of the support plate 100, along with the opening 133, so that the shaft of the support plate 100 is provided (not shown), and move the first aid device to the desired location.

[0038] On the other hand, although the first aid device in Figure 18 does not include a support plate 100 for supporting the patient's back, it is desirable that it be understood as a first aid device according to one embodiment of the present invention that includes the support plate 100.

[0039] The support base 200 is coupled with a sliding guide 110 so that the lower end of the piston 310 moves to a position that compresses the patient's chest compression point. In one embodiment of the present invention, the shape for supporting the hood 300 is arched, but is not limited thereto.

[0040] The support base 200 is movably connected at one end to a pair of sliding guides 110, allowing it to slide forward or backward around the sliding guides 110 as an axis, or the distance between the two ends can be adjusted by retracting and extending the frame 115.

[0041] The forward and backward sliding of the support base 200 and the adjustment of the distance between its ends are preferably performed before the piston 310 compresses the patient's chest compression point. When the support base 200 moves to a position where the piston 310 compresses and releases the patient's chest compression point, one end and the other end are fastened together by a pair of stoppers 120.

[0042] The support base 200 has a shape in which one end and the other end are detachable from a pair of sliding guides 110, and is detachable from the pair of sliding guides 110. By detaching it, it can be detached from the support plate 100 together with the hood 300 and used as a separate device.

[0043] The hood 300 is connected to one side of the support base 200, more specifically to the center (Arch Crown) of the arch-shaped support base 200, and is connected to a piston 310 for compressing the patient's chest compression points. The components of the hood 300 are as follows:

[0044] As shown in Figure 3, the hood 300 includes the piston 310, a control unit 320, an electrocardiogram measurement unit 330, a rhythm determination / impact signal generation unit 340, an electric shock unit 350, and a chest impedance measurement unit 360, and these components are either exposed to the outside or housed within the hood 300.

[0045] The piston 310 is initially separated from the patient's chest before compressing the chest compression point, and can be operated by the control unit 320 to repeat the process of compressing and then releasing the chest compression point, thereby releasing the chest compression point.

[0046] The piston 310 can operate based on the chest compression mode set by the control unit 320, either in a continuous compression mode that continuously compresses the patient's chest compression points, or in a 30:2 compression mode where chest compressions and artificial respiration are performed in parallel, with 30 chest compressions followed by 2 breaths, thereby providing the patient with chest compression-based first aid.

[0047] The piston 310 is operated by the control unit 320 in cross-direction with or simultaneously with the electric shock unit 350 to provide the patient with cardiopulmonary resuscitation and electric shock-based first aid.

[0048] Furthermore, while the piston 310 can directly compress the patient's chest compression points, it is not limited to this. A cap 700 for directly compressing the patient's chest compression points is detachably attached to the lower end, and the cap 700 may be made of a material such as silicone to mitigate impact during the process of compressing the patient's chest compression points.

[0049] In other words, the hood 300 connects the cap 700 to the piston 310 or the lower end of the piston 310, and compresses the patient's chest compression points through the cap 700 to enable cardiopulmonary resuscitation. In the following, the first aid device of the present invention will be described in detail with the lower end of the piston 310 compressing the patient's chest compression points.

[0050] On the other hand, the emergency medical device of the present invention can provide the patient with chest compressions and electric shocks in a cross-sectional or simultaneous manner through a single system, depending on the timing of the operation of the piston 310 and the electric shock unit 350. Therefore, it has the advantage of being more versatile than conventional cardiopulmonary resuscitation devices and automated external defibrillators.

[0051] The control unit 320 controls the operation of the components provided in the hood 300, namely the piston 310, the electrocardiogram measurement unit 330, the rhythm judgment / impact signal generation unit 340, the electric shock unit 350, and the chest impedance measurement unit 360, and is provided with multiple buttons for this purpose.

[0052] The aforementioned multiple buttons, although not shown in the diagram, include, as a specific example, a power button for turning the emergency medical device on and off, a control button for setting the emergency medical device to automatic cardiac shock mode and / or chest compression mode, a stop button for stopping the operation of the piston 310, a compression mode setting button for setting whether the piston 310 performs chest compressions (CPR) on the patient or for setting the chest compression mode of the piston 310, a compression depth setting button for setting the chest compression depth of the piston 310, a compression count setting button for setting the number of chest compressions of the piston 310, a shock button for operating the electrocardiogram measurement unit 330, the rhythm judgment / impact signal generation unit 340, and the electric shock unit 350, and an adaptive length change button for selecting whether or not to update the patient's chest compression start position and correct the loss of chest compression depth.

[0053] The control unit 320 is configured such that when an input signal is received at the power button and the emergency medical device is turned on, it performs a self-test to initialize the settings and determine whether it can operate normally. When the emergency medical device is turned on, if an input signal is received at the power button again, it initializes the settings and turns the emergency medical device off.

[0054] The control unit 320 controls the operation of the piston 310 so that the patient's chest is repeatedly compressed and relaxed when the chest compression mode set by the compression mode setting button is the continuous compression mode. Conversely, when the chest compression mode set by the compression mode setting button is the 30:2 compression mode, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed 30 times before two artificial respirations are performed.

[0055] The control unit 320 can control the operation of the piston 310 so that when an input signal is input to the compression depth setting button, the patient's chest is compressed to at least one depth of 4 cm, 4.5 cm, 5 cm, or 5.5 cm. Furthermore, when an input signal is input to the compression depth setting button in the initial state, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed to 5 cm, then to 5.5 cm when a signal is input again, to 4 cm when another signal is input, and to 4.5 cm when yet another signal is input.

[0056] The control unit 320 can control the operation of the piston 310 so that when an input signal is input to the compression count setting button, the patient's chest is compressed at least one number of times per minute: 100, 110, or 120 times. Furthermore, when an input signal is input to the compression count setting button in the initial state, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed 110 times, when another signal is input, the patient's chest is compressed 120 times, and when yet another signal is input, the patient's chest is compressed 100 times.

[0057] The electrocardiogram measurement unit 330 is connected to the rhythm judgment / impact signal generation unit 340 and the control unit 320. When operated by the control unit 320, it detects an electrocardiogram signal from the patient, amplifies it, removes noise from the amplified electrocardiogram signal, converts the electrocardiogram signal into a digital signal, and transmits it to the rhythm judgment / impact signal generation unit 340.

[0058] The electrocardiogram measurement unit 330 is equipped with an amplifier to amplify an analog electrocardiogram signal when it is detected, a filter to remove noise from the electrocardiogram signal amplified by the amplifier, and an A / D converter to convert the electrocardiogram signal from which noise has been removed by the filter into a digital signal.

[0059] The electrocardiogram measurement unit 330 is provided on one side of the hood 300 and consists of electrodes or pads that can be attached to the patient in order to detect an analog electrocardiogram signal from the patient, thereby detecting an electrocardiogram signal from the patient who is supporting their back on the support plate 100.

[0060] Here, the process of detecting the patient's electrocardiogram signal using electrodes or pads is a standard procedure, so for convenience, we will omit an explanation of this process.

[0061] The rhythm judgment / impact signal generation unit 340 is built into the hood 300 and is connected to the electrocardiogram measurement unit 330 so as to operate together when the electrocardiogram measurement unit 330 is operated by the control unit 320, thereby receiving a digital signal from the electrocardiogram measurement unit 330.

[0062] When the rhythm determination / shock signal generation unit 340 receives a digital signal from the electrocardiogram measurement unit 330, it analyzes the patient's electrocardiogram using the digital signal to determine whether the patient's electrocardiogram is a shockable rhythm or a nonshockable rhythm. If it determines that the patient's electrocardiogram is a shockable rhythm, it generates an electrical shock signal and transmits the electrical shock signal to the electrical shock unit 350 when the electrical shock unit 350 is activated.

[0063] The electric shock unit 350 is connected to the rhythm determination / shock signal generation unit 340. When the rhythm determination / shock signal generation unit 340 determines that the patient's electrocardiogram is in a rhythm requiring shock, the control unit 320 receives an electric shock signal from the rhythm determination / shock signal generation unit 340 to operate.

[0064] When the electric shock unit 350 receives an electric shock signal, it emits high-voltage energy from a pair of first electrodes 351 and a pair of second electrodes 352 to deliver an electric shock to the patient.

[0065] The pair of first and second electrodes 351 and 352 are preferably attached to the patient's chest so that an electric shock can be applied to the patient. Specifically, the pair of first electrodes 351 can be attached below the right clavicle of the patient to apply an electric shock, and the pair of second electrodes 352 can be attached to the left side of the patient's armpit next to the nipple to apply an electric shock.

[0066] Furthermore, the pair of first and second electrodes 351 and 352 are electrically connected to the electric shock unit 350 via a cable, by attaching and detaching them from the electric shock unit 350, thereby releasing high-voltage energy.

[0067] Furthermore, although the pair of first and second electrodes 351 and 352 are described as components of the hood 300 in one embodiment of the present invention, they are not limited to this, and as components provided on the support plate 100, they can be electrically connected to the electric shock unit 350 via a cable and release high voltage energy.

[0068] The chest impedance measurement unit 360 measures the chest impedance of a patient and does not limit the method of measuring chest impedance, but specifically, it can continuously measure the chest impedance value of a patient during chest compression and relaxation by using a pair of first electrodes 351 which are current output electrodes capable of outputting current as well as releasing high voltage energy, and a pair of second electrodes 352 which are voltage detection electrodes capable of detecting voltage.

[0069] Meanwhile, the control unit 320 calculates whether the pair of first and second electrodes 351 and 352 are properly attached to the patient within the range of the patient's chest impedance measured by the chest impedance measurement unit 360, and calculates the profile of the biphasic (two-phase) electrical shock waveform using the chest impedance value 421a during chest compression and the chest impedance value 421b during chest relaxation.

[0070] In one embodiment of the present invention, the emergency medical device further includes a storage unit 400 for storing information necessary during the emergency medical treatment process for a patient. The storage unit 400 consists of a first storage unit 410 and a second storage unit 420, and the information stored in each of the storage units 410 and 420 is as follows.

[0071] Figure 4 shows a storage unit and stored information provided in an emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention.

[0072] As shown in Figure 4, the first storage unit 410 already stores start time information 411 for starting the patient's electrocardiogram analysis, end time information 412 for ending the patient's electrocardiogram analysis, and chest compression start position information 413 for returning the piston 310 after it has completed chest compression and relaxation of the patient.

[0073] The second storage unit 420 stores the chest impedance value 421a during chest compression of the patient, measured by the chest impedance measurement unit 360, the chest impedance value 421b during chest relaxation of the patient, compression time information 422 for when the piston 310 compresses the patient's chest compression point, and relaxation time information 423 for when the patient's chest compression point is released.

[0074] Although the storage unit 400 has been described as consisting of a first storage unit 410 and a second storage unit 420 in one embodiment, it is not limited to this, and the first storage unit 410 and the second storage unit 420 are provided as a single storage unit, and each piece of information is stored or already stored in it.

[0075] On the other hand, the control unit 320 uses the compression time information and relaxation time information stored in the second storage unit 420 to calculate the average chest impedance values ​​for the patient during chest compression and relaxation, respectively, and based on these average chest impedance values, it can generate optimal biphasic electrical shock waveform profiles for the patient during chest compression and relaxation.

[0076] Furthermore, when fluctuations occur in the chest impedance values ​​421a and 421b of a patient stored in the second storage unit 420 due to chest compression and relaxation, the control unit 320 can calculate the absolute value of the average and difference between the chest impedance values ​​421a and 421b of the patient during chest compression and relaxation, which are continuously measured by the chest impedance measurement unit 360, and a certain number of chest impedance values ​​421a and 421b stored in the second storage unit 420.

[0077] Furthermore, if the absolute value of the difference between the calculated average value of the chest impedance and the control unit 320 is greater than or equal to a predetermined absolute value, the control unit 320 excludes the average value of the chest impedance before the fluctuation occurred, which is stored in the second storage unit 420. After excluding the average value of the chest impedance, it replaces it with the chest impedance values ​​421a and 421b measured by the chest impedance measurement unit 360 for the patient during chest compression and relaxation. Using the chest impedance values ​​421a and 421b, the control unit 320 can generate an optimal biphasic electrical shock waveform profile for the patient during chest compression and relaxation.

[0078] In other words, according to one embodiment, the chest impedance value 421a during chest compression and the chest impedance value 421b during chest relaxation are determined, and their average values ​​are calculated. Using the calculated average chest impedance values, if chest compression is performed at the time of electrical shock application, an electrical shock waveform profile corresponding to the average impedance value during chest compression is generated. If chest relaxation is performed at the time of electrical shock application, an electrical shock waveform profile corresponding to the average impedance value during chest relaxation is generated, thereby generating an optimal electrical shock waveform profile for the patient.

[0079] The optimal biphasic electric shock waveform profile generated by the control unit 320 will be explained in detail with reference to Figure 7 and Table 1 below.

[0080] [Table 1]

[0081] As shown in Figure 7, the biphasic electric shock waveform profile includes positive and negative waveforms and indicates the current value and duration applied when an electric shock is delivered to the patient. Table 1 shows the duration (ms) of the first phase interval, the duration (ms) of the second phase interval, the peak current (A), and the discharge energy (J) calculated from these, provided by the average impedance measured during chest relaxation or contraction of the patient. In Table 1, the discharge energy (J) is the discharge energy for adult patients, and preferably 200J can be applied to an adult patient, but is not limited to this.

[0082] Referring again to Figure 7, the profile of the biphasic electric shock waveform has the x-axis as duration (ms) and the y-axis as current (A). Figure 7 shows a symmetric profile according to one embodiment of the present invention, but is not limited to this, and may also be composed of an asymmetric profile.

[0083] In actually implementing the present invention, the duration of the first phase interval (ms), the duration of the second phase time (ms), and the peak current (A) value for each impedance value shown in Table 1 are predetermined values ​​for the control unit 320, which then applies an electric shock to the patient using a biphasic electric shock waveform profile corresponding to the average impedance values ​​measured during chest compression and relaxation.

[0084] In Figure 7, a is the current value before the first phase interval, b is the current value between the first and second phase intervals, and c is the current value after the second phase interval. The values ​​of a, b, and c can all be the same. Also, α is the decrease in the peak current while it is low in the first phase interval, and β is the decrease in the peak current while it is low in the second phase interval. The values ​​of α and β can be the same. Also, A is the duration in the first phase interval, and B is the duration in the second phase interval. The values ​​of A and B can be the same. Furthermore, (1) is the difference between the current value immediately before the end of the first phase interval and the current value immediately before the start of the second phase interval, and (2) is the absolute value of the peak current in the first phase interval. The sum of (1) and α can be (2).

[0085] In one embodiment of the present invention, the emergency treatment device further includes a sensor 500 for sensing information during the emergency treatment process of a patient, the sensor 500 may consist of a first sensing sensor 520 and a second sensing sensor 530.

[0086] Figure 5 shows a sensor provided in an emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention.

[0087] As shown in Figure 5, the sensor 500 uses the first sensing sensor 520 to sense the current position of the piston 310 in real time, generates current position information, and transmits the current position information of the piston 310 to the control unit 320 in real time.

[0088] On the other hand, the control unit 320 controls the operation of the piston 310 using information from the first sensing sensor 520 and the second sensing sensor 530 before analyzing the patient's electrocardiogram. An example of the process of controlling the operation of the piston 310 using the current position information of the piston 310 is as follows.

[0089] Before analyzing the patient's electrocardiogram, the control unit 320 moves the lower end of the piston 310 to the chest compression start position so that the lower end of the piston 310 does not come into contact with the patient's chest. Once the lower end of the piston 310 is in the chest compression start position, the control unit 320 determines whether the current position information of the piston 310 received in real time matches the chest compression start position, and positions the lower end of the piston 310 relatively above the chest compression start position so that the piston 310 is in a waiting state before compressing the patient's chest compression point.

[0090] Furthermore, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed and relaxed according to the settings of the chest compression mode, chest compression depth, and number of chest compressions, which are selected using multiple buttons, starting from the chest compression start position after analyzing the patient's electrocardiogram.

[0091] Furthermore, before the piston 310 compresses and releases the patient's chest compression point, the control unit 320 ensures that the distance between the lower end of the piston 310 and the patient's chest is a predetermined distance (0-2 cm) so that the patient's chest is compressed when the piston 310 descends by the chest compression depth set by the compression depth setting button. In other words, the starting position of chest compression for the patient refers to the position of the piston 310 that should be positioned for chest compression during the patient's chest compression and release process.

[0092] Furthermore, the control unit 320 optimizes the patient's chest compression start position by updating the patient's chest compression start position at regular intervals (2 minutes and 30 seconds after the completion of setting the chest compression mode, chest compression depth, and number of chest compressions) in one embodiment. Updating the patient's chest compression start position at regular intervals in this way is necessary because the chest may collapse due to chest compression and relaxation, or the patient may move during the process of supporting their back on the support plate 100, preventing optimization of the patient's chest compression start position.

[0093] Furthermore, the control unit 320 can receive electrical information (e.g., power) and current piston position information from the motor used to drive the piston 310, and update the patient's chest compression start position if a change in the patient's chest compression start position is detected. Here, the sensors that sense the electrical information, motor rotation speed, and piston movement distance information may be the first sensing sensor 520 and the second sensing sensor 530.

[0094] Referring again to Figure 5, the first sensing sensor 520 senses the electrical information used by the motor and transmits the electrical information to the control unit 320.

[0095] Such a first sensing sensor 520 is provided in the motor drive circuit and can determine the position of the lower end of the piston 310 and transmit it to the control unit 320 in real time.

[0096] Here, the control unit 320 can receive the lower end position value of the piston 310 from the first sensing sensor 520 and determine the current position of the piston 310. Here, as described above, when the cap 700 is attached to the lower end of the piston 310 to compress the patient's chest, the control unit 320 can calculate the lower end position value of the piston 310 by considering a predetermined width value of the first housing 710 located between the patient's chest and the body.

[0097] One example of how the first sensing sensor 520 can determine the position of the lower end of the piston is that when the piston 310 descends due to the rotation of the motor, the power consumption of the motor is kept constant while it descends into empty space. While descending into space, the power consumption of the motor is constant, and the amount of power consumed by the motor increases from the moment the lower end of the piston touches the surface of the patient's chest. The first sensing sensor 520 can sense the amount of power consumed by the motor, recognize the moment when the power consumption increases as the surface of the patient's chest, and at this point, it can determine the position value of the lower end of the piston and transmit it to the control unit 320.

[0098] Furthermore, when the lower end of the piston 310 comes into contact with the surface of the patient's chest at regular intervals, the first sensing sensor 520 uses the difference in electrical information to sense whether or not the patient's chest shape can be changed, and transmits this information to the control unit 320.

[0099] Furthermore, when the cap 700 is fitted onto the lower end of the piston 310, the first sensing sensor 520 can also use the difference in electrical information to sense whether the shape of the patient's chest can be changed when the lower end of the cap 700 comes into contact with the surface of the patient's chest, and transmit whether the shape of the patient's chest can be changed to the control unit 320.

[0100] The second sensing sensor 530 is installed on the motor and, after sensing the motor's rotational speed and the piston's travel distance, generates information about the piston's travel distance and transmits this information to the control unit 320.

[0101] In one embodiment, the sensor 500 includes a first sensing sensor 520 and a second sensing sensor 530, but is not limited thereto. The first sensing sensor 520 and the second sensing sensor 530 are provided as a single sensing sensor capable of sensing changes in electrical information, motor rotation speed, and piston travel distance information, respectively.

[0102] In one embodiment of the present invention, the emergency medical device further includes a notification unit 600 for notifying the user of messages regarding the progress of emergency medical treatment for a patient, the notification unit 600 includes a first notification unit 610 and a second notification unit 620.

[0103] Figure 6 shows a notification unit provided in an emergency treatment device for chest compression and defibrillation of a patient according to one embodiment of the present invention.

[0104] As shown in Figure 6, when the patient's chest compression start position is updated, the first notification unit 610 outputs a first message to notify that the patient's chest compression start position has been updated, and a second message to notify the difference between the existing patient's chest compression start position before the update and the updated patient's chest compression start position.

[0105] Furthermore, the first notification unit 610 outputs a third message when the difference between the starting position of chest compressions for an existing patient and the starting position of chest compressions for an updated patient is greater than or equal to a specific critical value. The specific critical value that serves as the criterion for outputting the third message is not limited, but in one embodiment of the present invention, it can be set to 1 cm.

[0106] In other words, in one embodiment, the first notification unit 610 can output a third message when the difference between the starting position of chest compressions for an existing patient and the starting position of chest compressions for an updated patient is 1 cm or more, and when the starting position of chest compressions for a patient is updated, it can output a fourth message to prompt the user to select the chest compression depth of the piston 310 (at least one of 4 cm, 4.5 cm, 5 cm, and 5.5 cm) and the number of chest compressions (at least one of 100, 110, and 120 per minute).

[0107] Here, after being provided with the fourth message, the user of the emergency medical device for providing emergency medical treatment to the patient can input signals to the compression depth setting button and the compression count setting button of the control unit 320 to select the chest compression depth and the number of chest compressions of the piston 310. The control unit 320 can update the chest compression depth and the number of chest compressions once they have been selected by the compression depth setting button and the compression count setting button.

[0108] Furthermore, the first notification unit 610 can output a fifth message to inform the user that the patient's chest shape has changed when the first sensing sensor 520 detects a change in the patient's chest shape.

[0109] In one embodiment of the present invention, when at least one of the first to fifth messages output from the first notification unit 610, which is an auditory display device, is output audibly, a visual display device provided with an LED electronic display board or an LED flashing light and a display can visually output the same message as the message output from the first notification unit 610 and provide it to the user.

[0110] The second notification unit 620 can output a message to notify the user if the absolute value of the difference between the average chest impedance values ​​calculated by the control unit 320 during chest compression and relaxation of the patient stored in the second storage unit 420 and the chest impedance value calculated at the current time is greater than or equal to a predetermined absolute value.

[0111] On the other hand, the cap 700 attached to the lower end of the piston 310 is fitted to the lower end of the piston 310 and is made of a material with a different hardness from the hard material of the piston 310, thereby continuously providing a cushioning effect that alleviates and distributes the pressure acting on the patient's chest.

[0112] The structure of the cap 700 will be described in detail below.

[0113] Figure 8 is a perspective view of a cap according to one embodiment of the present invention, Figure 9 is a cross-sectional view of AA in Figure 8, Figure 10 is a perspective view showing a first member according to one embodiment of the present invention, Figure 11 is a plan view showing a first member according to one embodiment of the present invention, and Figure 12 is a cross-sectional view of BB in Figure 11.

[0114] As shown in Figures 8 to 12, the cap 700 includes a first member 710 and a second member 720.

[0115] The first member 710 can directly contact the patient's chest compression point and compress the patient's chest when the piston 310 expands toward the patient's chest after the piston 310 and cap 700 are fitted together.

[0116] Furthermore, the first member 710 is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, chloroprene, and polyurethane, and biocompatible silicone. Due to the properties of these materials, it can be embodied in a form that conforms to the shape of the patient's chest.

[0117] Furthermore, of the first members 710, the biocompatible silicon has a Shore A hardness of 10 to 30, and the other materials have an Asker C hardness of 10 to 20. In one embodiment of the present invention, Asker C hardness can be measured by an Asker hardness tester, which measures hardness based on the depth to which the indenter is pressed into the sample when a predetermined-shaped indenter is pressed into the sample surface by spring force to deform it, and the resistance force of the sample and the spring force are balanced. Shore hardness is measured by measuring the height to which a falling object with a small diamond fixed to its end bounces when dropped from a certain height.

[0118] Furthermore, as shown in Figures 11 to 14, the first member 710 is given an external shape by a first housing 711, and the first housing 711 is provided with a plurality of air flow ports 712 and a mounting portion 713.

[0119] The first housing 711 consists of an integrally formed inner housing 711a and an outer housing 711b, with its lower surface in contact with the patient's chest.

[0120] The internal housing 711a has a plurality of airflow ports 712 formed on its lower surface so that when pressure is transmitted from the patient's chest to the lower surface during the patient's chest compression process, a volume change occurs due to airflow in the gap space (A).

[0121] The gap space (A) between the upper and bottom 723 of the internal housing 711a can decrease in volume when air flows outward along the air inlet 712 by the piston 310 which is expanded during the patient's chest compression process, and conversely, when the housing is removed from the patient's chest after the patient's chest compression is finished, its volume can increase due to the air flowing in through the air inlet 712.

[0122] In this internal housing 711a, the lower surface contacts the patient's chest during the chest compression process, and as the piston 310 expands, air flows out of the gap space (A), reducing the volume of the gap space (A). When the central attachment portion 713 contacts the lower surface of the bottom portion 723, negative pressure is generated in the gap space (A). After the negative pressure is generated in the gap space (A), when the piston 310 contracts, the lower surface that is in contact with the patient's chest compression point can pull the patient's chest upward.

[0123] The first housing 711 has a protruding member insertion opening 7110 formed at the boundary between the inner housing 711a and the outer housing 711b, into which a protruding member 7230, which will be described later, can be fitted.

[0124] The protruding member insertion opening 7110 is formed in a circular shape at the boundary between the inner housing 711a and the outer housing 711b so that the protruding member 7230 can be fitted into it.

[0125] Furthermore, the inner housing 711a and the outer housing 711b have side walls that protrude upward to form the protruding member insertion opening 7110, so that a gap space (A) is created between the inner housing 711a and the bottom portion 723 in the fitting structure of the first member 710 and the second member 720.

[0126] The first housing 711 needs to adapt to the patient's chest when compressing it. Therefore, it is desirable that the lower surface of the internal housing 711a that contacts the point of compression on the patient's chest be made of biocompatible silicone, which is easily adaptable to the patient's chest, among the applicable materials. This provides a continuous cushioning effect that relieves and distributes the pressure acting on the patient's chest, thereby preventing rib fractures and hemothorax from occurring during the emergency treatment process.

[0127] Furthermore, the first housing 711 is configured such that air in the gap space (A) flows outwards through the multiple air inlets 712, reducing the volume of the gap space (A), and causing the anchoring portion 713 to contact the lower surface of the bottom portion 723 of the second member 720, resulting in a negative pressure state in the gap space (A).

[0128] Furthermore, the first housing 711 is designed with an inner housing 711a and an outer housing 711b that are bellows-shaped, allowing for volume changes in the gap space (A) due to airflow.

[0129] The second member 720 is fitted to the first member 710, with the piston 310 fitting into it and contacting the lower end of the piston 310.

[0130] The second member 720 can be made of a different material from the first member 710, by being composed of one of polyurethane and polypropylene, and biocompatible silicone.

[0131] Furthermore, the second member 720 can have a different hardness from the first member 710, by having a Shore A hardness of 40-60 in the case of biocompatible silicone, and an Asker C hardness of 25-30 in the case of other materials.

[0132] Furthermore, as shown in Figures 11 to 14, the second member 720 is integrally formed with the second housing 721, the piston fitting portion 722, and the bottom portion 723.

[0133] The second housing 721 has the same shape as the second member 720 and is integrally formed with the piston fitting portion 722 and the bottom portion 723.

[0134] The piston fitting portion 722 is integrally formed with the second housing 721 and forms a piston fitting opening 7220 such that the piston 310 fits onto the upper part of the second member 720.

[0135] Furthermore, the piston fitting portion 722 is a portion that is bent from the second housing 721 in order to form a piston fitting opening 7220 into which a fastening member (not shown) of the piston 310 can be retracted, and includes a first piston fitting portion 722a, a second piston fitting portion 722b, a third piston fitting portion 722c, and a fourth piston fitting portion 722d.

[0136] Furthermore, the piston fitting portion 722 has a pair of grooves 724a and 724b formed between the first piston fitting portion 722a and the second piston fitting portion 722b, and between the third piston fitting portion 722c and the fourth piston fitting portion 722d. When the piston 310 is fitted into the piston fitting opening 7220, a fastening member formed on a part of the outer circumferential surface of the piston 310 is pulled into the grooves 724a and 724b.

[0137] In other words, the piston 310 is fastened to the cap 700 by the lower end being in contact with the bottom 723 and the fastening member being pulled into a pair of grooves 724a and 724b.

[0138] Furthermore, the lower part of the piston fitting portion 722 can expand (or flow) to the outside of the second housing 721 so that the fastening member of the piston 310 is pulled in or out from the pair of grooves 724a and 724b during the process of coupling and uncoupling of the fastening member of the piston 310 and grooves 724a and 724b, thereby forming an expanded space 7221 in the gap space with the second housing 721.

[0139] The bottom portion 723 is the lower surface of the second member 720 and is integrally formed with the second housing 721. When the piston 310 is fitted into the piston fitting opening 7220, the upper surface comes into contact with the lower end of the piston 310.

[0140] Furthermore, the bottom portion 723 has a protruding member 7230 provided on its lower surface, which fits into the protruding member insertion opening 7110, thereby realizing the fitting of the first member 710 and the second member 720.

[0141] The protruding member 7230 can protrude in a circular shape from the lower surface of the bottom portion 723 so as to fit into the protruding member insertion opening 7110.

[0142] The following describes in detail the process of the method (S100) for correcting the loss of chest compression depth in a patient, which is performed by an emergency medical device according to one embodiment of the present invention.

[0143] As shown in Figure 13, the user of the first aid device sets a value for the patient's chest compression start position at the lower end of the piston 310, which is positioned at the upper end of the patient's chest, using the control unit 320. Then, the user expands or contracts the piston 310 so that the lower end of the piston 310 moves to the chest compression start position according to the value for the patient's chest compression start position (S101).

[0144] Here, expansion of the piston 310 means a downward process for compressing the patient's chest, and contraction means an upward process for relaxing the patient's chest.

[0145] Furthermore, the step of moving the patient's chest compression starting position (S101) is performed by the first sensing sensor 520, as described above.

[0146] After the step of moving the patient to the starting position for chest compression (S101), the user can apply the value of the chest compression depth (L), which is the length of movement of the piston 310 from the patient's starting position for chest compression toward the upper side of the support plate 100, and the critical value of the chest compression depth (T) using the control unit 320 (S102).

[0147] After the step of applying the chest compression depth value and the critical value of the chest compression depth (S102), the control unit 320 expands and contracts the piston 310 so that it reciprocates in accordance with the predetermined chest compression depth, so that the cap 700 can compress the patient's chest (S103).

[0148] The control unit 320 can periodically sense from the first sensing sensor 520 whether or not the starting position of the patient's chest compressions has changed while the patient's chest compressions are being performed (S104).

[0149] Here, if the first sensing sensor 520 does not detect that the starting position of chest compression for the patient has changed, and it is deemed unnecessary to change the starting position of chest compression for the patient (S104-NO), the control unit 320 maintains the patient's chest compression step (S103) so that the patient's chest is compressed.

[0150] In contrast, if the first sensing sensor 520 detects that the starting position of chest compressions for the patient has changed, and it is necessary to change the starting position of chest compressions for the patient (S104-YES), the control unit 320 can notify the user of the change in chest shape due to the need to change the starting position of chest compressions for the patient using the first notification unit 610, which is an audible display device, an LED electronic display board or an LED flashing light, and a visual display device which is a display (S105).

[0151] After notifying the user of the change in chest shape audibly / visually (S105), the control unit 320 can determine whether or not a signal is input to the adaptive length button included in the emergency medical device (S106).

[0152] If no signal is input to the adaptive length button (S106-NO), the control unit 320 maintains the patient's chest compression step (S103) to ensure that the patient's chest is compressed.

[0153] In contrast, if a signal is input to the adaptive length button (S106-YES), the control unit 320 updates the patient's chest compression start position (S107), calculates the combined value of the isolation distance (X) and the initial chest compression depth (L), and then compares it with the critical value of the chest compression depth (T) (S108).

[0154] Here, if the combined value of the isolation distance (X) between the patient's chest and the cap 700 and the initial chest compression depth (L) is less than the critical value (T) of the chest compression depth (S108-NO), the control unit 320 maintains the patient's chest compression step (S103) to ensure that the patient's chest is compressed.

[0155] In contrast, if the combined value of the isolation distance (X) between the patient's chest and the cap 700 and the initial chest compression depth (L) exceeds the critical value of chest compression depth (T) (S108-YES), the absolute difference between the combined value of the isolation distance (X) and the initial chest compression depth (L) and the critical value of chest compression depth (T) can be calculated (S109).

[0156] After the absolute value calculation step (S109), the control unit 320 subtracts the absolute value from the chest compression depth value (L) to update the chest compression depth value (L) (S110).

[0157] After the step of updating the chest compression depth value (S110), the control unit 320 can control the first notification unit 610 so that a message with the updated chest compression depth value (L) is output (S111).

[0158] In the first notification unit control step (S111), the messages output by the first notification unit 610 are a first message to notify that the patient's chest compression start position has been updated when the first notification unit 610 updates the patient's chest compression start position, and a second message to notify the difference between the existing patient's chest compression start position before the update and the updated patient's chest compression start position. The control unit 320 can control not only the first notification unit 610 but also the LEDs embodied in the LED electronic display board or LED flashing lights and the visual display device, which is a display, so that information for the first and second messages is output.

[0159] Furthermore, in the first notification unit control step (S111), the control unit 320 communicates with a terminal provided by the user of the first aid device, thereby transmitting information regarding the first and second messages to the terminal and providing it to the user. This allows the user to check the updated chest compression depth value (L) and absolute value information on the terminal during or after first aid treatment for the patient.

[0160] After the first and second messages are output once each, the control unit 320 expands and contracts the piston 310 so that the cap 700 reciprocates in accordance with the updated chest compression depth value (L), thereby enabling chest compression by the cap 700 (S112).

[0161] The timing of when the control unit 320 causes the cap 700 to reciprocate is not limited to when the first notification unit 610 outputs the first and second messages once each. The piston 310 can also be expanded and contracted so that the cap 700 reciprocates in accordance with the updated chest compression depth value (L) immediately after the chest compression depth value (L) is updated.

[0162] In the following section, the chest shape of the patient will be described in detail during the process of the method for correcting the loss of chest compression depth (S100).

[0163] Figure 14 is a diagram illustrating the starting position of chest compression on a patient according to one embodiment of the present invention, Figure 15 is a diagram showing the shape of the chest when the lower end of the cap according to one embodiment of the present invention is in contact with the chest, and Figure 16 is a diagram showing the shape of the chest when the chest compression depth disappears during the chest compression process by the cap according to one embodiment of the present invention.

[0164] In the step of moving the patient to the starting position for chest compression (S101), the control unit 320 ensures that when the chest compression process is performed alone, the cap 700 expands at the starting position for chest compression as shown in Figure 14(a) to make contact with the patient's chest (C). Conversely, when chest compression and electrocardiogram analysis (analysis of whether cardiac impact rhythm is necessary or unnecessary) by the hood 300 are performed in parallel, the piston 310 can be separated from the patient's chest (C) by a predetermined distance (2 cm) as shown in Figure 14(b) so that the electrocardiogram analysis is not obstructed by the piston 310 and the cap 700 before and after chest compression.

[0165] As shown in Figure 15, in the chest compression progression steps by the cap (S103, S112), the piston 310 is expanded by the control unit 320 to move the cap 700 from the chest compression start position to contact the patient's chest (C), and the cap 700 can compress the patient's chest (C) by the expansion of the piston 310 by a chest compression depth value (L) set or updated by the control unit 320.

[0166] As shown in Figure 16, during the chest compression steps (S103, S112) with the cap, when the cap 700 compresses the patient's chest (C), the shape of the patient's chest (C) deforms as shown in Figure 16. At this point, the chest compression depth value (L) disappears by the distance (X) between the lower end of the cap 700 and the deformed patient's chest (C), resulting in an inaccurate chest compression process. Consequently, the control unit 320 compares the chest compression depth value (L) with the critical value (T) of the chest compression depth and uses the set or updated chest compression depth value (L) to compress the patient's chest, thereby correcting the loss of chest compression depth and ensuring that the chest compression process is performed accurately.

[0167] As stated above, a detailed description of preferred embodiments of the present invention is provided so that those skilled in the art can embody and practice the invention. While the above description has been based on reference to preferred embodiments of the invention, those skilled in the art will understand that the invention can be modified and altered in various ways without departing from the scope of the invention. For example, those skilled in the art can utilize the configurations described in the embodiments above in combination with one another. Therefore, the present invention is not intended to limit itself to the embodiments presented herein, but rather to provide the broadest possible scope consistent with the principles and novel features disclosed herein.

[0168] The present invention can be embodied in other specific forms without departing from the spirit and essential features of the invention. Therefore, the above detailed description should not be considered restrictive in all respects, but rather illustrative. The scope of the invention is determined by a reasonable analysis of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention. The present invention is not intended to limit itself to the embodiments presented herein, but rather to provide the broadest scope consistent with the principles and novel features disclosed herein. Furthermore, embodiments can be formed by combining claims that are not explicitly referenced in the claims, or by including them as new claims through amendments after filing. Industrial Applicability

[0169] The present invention provides an emergency treatment device for chest compression and defibrillation of a patient, and a method for correcting the loss of chest compression depth, which corrects the loss of chest compression depth due to changes in chest shape that occur during the process of compressing the patient's chest with a cap provided on the emergency treatment device for chest compression and defibrillation, thereby enabling accurate chest compression of the patient, and thus has industrial applicability.

[0170] Furthermore, the present invention provides an emergency treatment device for chest compression and defibrillation of a patient, and a method for correcting the loss of chest compression depth. By automating the chest compression and defibrillation process, and by performing compression at the existing compression depth when the combined value of the set initial chest compression depth and isolation distance is less than the critical value of the compression depth, and by performing chest compression at the corrected compression depth when it exceeds the critical value, the accuracy and stability of the chest compression and defibrillation process are improved, thereby enhancing ease of use for the user during chest compression and defibrillation of a patient, and thus has industrial applicability.

[0171] Furthermore, the present invention, an emergency treatment device for chest compression and defibrillation of a patient and a method for correcting the loss of chest compression depth, can periodically sense whether or not the starting position of chest compression has changed, notify the user audibly / visually of changes in the patient's chest shape, and update the starting position of chest compression, thereby ensuring user convenience and thus having industrial applicability.

Claims

1. A support plate for supporting the patient's back, A support base is provided, to which one end and the other end are connected to both edges of the aforementioned support plate. A hood is connected to one side of the support base and positioned above the patient's chest, to which a piston for compressing the patient's chest is connected. After setting the value of the patient's chest compression start position at the lower end of the piston, the piston is expanded or contracted so that the lower end of the piston moves to the chest compression start position according to the chest compression start position value. The piston is expanded and contracted by applying the value of the initial chest compression depth, which is the length of movement of the piston from the chest compression start position toward the support plate, and the critical value of the chest compression depth, so that chest compression is performed. During chest compression, changes in the shape of the patient's chest are detected, and the patient's chest compression start position is updated. The separation distance between the cap fastened to the lower end of the piston and the patient's chest and the front An emergency treatment device for chest compression and defibrillation of a patient, comprising a control unit that compares the combined value of the initial chest compression depth and the critical value of the chest compression depth, maintains the initial chest compression depth if the combined value is less than the critical value, subtracts the absolute difference between the combined value and the critical value from the initial chest compression depth to obtain an updated chest compression depth, and expands and contracts the piston so that the cap reciprocates in accordance with the initial or updated chest compression depth, thereby performing chest compression by the cap.

2. A first storage unit which already stores information on the chest compression start position in which the piston returns after completing chest compression and relaxation of the patient, The emergency treatment device for chest compression and defibrillation of a patient according to claim 1, comprising a sensor that senses the current position of the piston in real time and generates information about the current position of the piston.

3. The first storage unit is characterized in that it already stores start time information for starting the electrocardiogram analysis of the patient and end time information for ending the electrocardiogram analysis of the patient, as described in claim 2.

4. Before analyzing the patient's electrocardiogram, the control unit uses the chest compression start position information to move the lower end of the piston to the chest compression start position and determines whether the current position information of the piston received from the sensor matches the chest compression start position. The emergency treatment device for chest compression and defibrillation of a patient according to claim 2, characterized in that the lower end of the piston is positioned relatively above the chest compression start position so that the piston is in a standby state.

5. The control unit is provided with multiple buttons for setting the chest compression mode, chest compression depth, and number of chest compressions of the piston, respectively. The emergency treatment device for chest compression and defibrillation of a patient according to claim 4, characterized in that, after analyzing the patient's electrocardiogram, the piston is controlled so that the patient's chest is compressed and relaxed from the chest compression start position according to the setting by the button.

6. The emergency treatment device for chest compression and defibrillation of a patient according to claim 5, wherein the control unit optimizes the starting position of chest compression of the patient by maintaining a predetermined distance between the lower end of the piston and the patient's chest, so that the patient's chest is compressed when the piston descends by the chest compression depth set by the button, before compressing and relaxing the patient's chest according to the setting by the button.

7. The emergency treatment device for chest compression and defibrillation of a patient according to claim 6, characterized in that the control unit optimizes the starting position of chest compressions for the patient by updating the starting position of chest compressions for the patient at regular intervals.

8. The control unit moves the lower end of the piston to the chest compression start position, and then determines whether the current position of the piston, received from the sensor, matches the current position of the piston. The emergency treatment device for chest compression and defibrillation of a patient according to claim 7, characterized in that it receives electrical information used from the motor for driving the piston and the current position information of the piston from the sensor, and when a change in the starting position of chest compressions of the patient is detected, it updates the starting position of chest compressions of the patient.

9. The emergency treatment device for chest compression and defibrillation of a patient according to claim 8, characterized in that the sensor includes a first sensing sensor provided in the drive circuit of the motor, which, when the lower end of the piston comes into contact with the surface of the patient's chest at regular intervals, senses whether or not the shape of the patient's chest can be changed using the difference in electrical information, and transmits whether or not the shape of the patient's chest can be changed to the control unit.

10. The emergency medical device for chest compression and defibrillation of a patient according to claim 8, characterized in that the sensor includes a second sensing sensor that senses the rotational speed of the motor and the distance traveled by the piston, generates information on the distance traveled by the piston, and transmits the piston distance traveled information to the control unit.

11. The emergency treatment device for chest compression and defibrillation of a patient according to claim 9, further comprising a first notification unit that, when the starting position of chest compressions for the patient is updated, outputs a first message to notify that the starting position of chest compressions for the patient has been updated, and a second message to notify the difference between the existing starting position of chest compressions for the patient before the update and the updated starting position of chest compressions for the patient.

12. The first notification unit outputs a third message when the difference between the starting position of chest compressions for an existing patient and the starting position of chest compressions for an updated patient is greater than or equal to a specific critical value; a fourth message when the starting position of chest compressions for a patient is updated, prompting the user to select the chest compression depth and number of chest compressions for the piston; and a fifth message when the first sensing sensor detects a change in the shape of the patient's chest, informing the user that the shape of the patient's chest has changed, as described in claim 11.

13. The emergency medical device for chest compressions and defibrillation of a patient according to claim 12, characterized in that the control unit updates the chest compression depth and the number of chest compressions when the chest compression depth and the number of chest compressions are selected via the plurality of buttons after outputting the fourth message from the first notification unit.

14. The emergency treatment device for chest compression and defibrillation of a patient according to claim 13, comprising an LED electronic display board or an LED flashing light for visually outputting at least one of the first to fifth messages output from the first notification unit, and a visual display device provided with a display.

15. The emergency treatment device for chest compression and defibrillation of a patient according to claim 1, characterized in that the hood moves by sliding of the support base.

16. The emergency treatment device for chest compression and defibrillation of a patient according to claim 1, characterized in that the support plate includes a band with a pair of cuffs positioned on the sides to wrap around the upper part of the patient's arm, including the elbow, and to secure the patient's arm while chest compression of the patient is being performed.

17. A method for correcting loss of chest compression depth in an emergency medical device for chest compression and defibrillation of a patient, a) The control unit sets a value for the patient's chest compression start position at the lower end of a piston positioned on the upper side of the patient's chest, and then expands or contracts the piston so that the lower end of the piston moves to the chest compression start position according to the value for the patient's chest compression start position; b) The control unit applies the value of the initial chest compression depth, which is the length of movement of the piston from the patient's chest compression start position toward the support plate supporting the patient's back, and a critical value of the chest compression depth to expand and contract the piston to perform chest compression, and during the progress of chest compression, senses a change in the shape of the patient's chest and updates the patient's chest compression start position, c) The control unit compares the combined value of the isolation distance between the cap fastened to the lower end of the piston and the patient's chest and the initial chest compression depth with the critical value of the chest compression depth, and if the combined value is less than the critical value, maintain the initial chest compression depth, and if the combined value is equal to or greater than the critical value, subtract the absolute value of the difference between the combined value and the critical value from the initial chest compression depth to obtain an updated chest compression depth value. d) A method for correcting loss of chest compression depth in a patient, comprising the step of expanding and contracting the piston so that the cap reciprocates in accordance with the initial or updated chest compression depth value, so that chest compression is performed by the cap.

18. Step a) is characterized in that the control unit receives a position value of the lower end of the piston from a first sensing sensor, adds a pre-inputted width value of a first housing positioned between the lower end of the piston and the patient's chest to the position value of the lower end of the piston to determine the current position of the piston, determines whether the determined current position of the piston is the same as the chest compression start position, and expands or contracts the piston so that the determined current position of the piston is the same as the chest compression start position, as described in 17.

19. Step b) above is, b-1) While chest compression is being performed by the piston, the first sensing sensor detects whether the shape of the patient's chest has changed by using the difference in electrical information when the lower end of the piston comes into contact with the surface of the patient's chest, b-2) When the shape of the patient's chest changes, the first notification unit notifies the user whether or not the shape of the patient's chest has changed, b-3) The method for correcting loss of chest compression depth for a patient according to 18, further comprising the step of updating the patient's chest compression start position when the user inputs a signal to an adaptive length change button for updating the patient's chest compression start position.

20. Step d) above is, d-1) When the combined value of the initial chest compression depth and the isolation distance exceeds the critical value of the chest compression depth, the control unit calculates the absolute value of the difference between the combined value of the isolation distance and the initial chest compression depth and the critical value of the chest compression depth. d-2) The control unit updates the chest compression depth value by subtracting the absolute value from the chest compression depth value, d-3) A step of controlling the first notification unit so that the control unit outputs a message with the updated chest compression depth value, d-4) The method for correcting the loss of chest compression depth for a patient according to claim 19, characterized in that the control unit, after outputting the message, expands and contracts the piston so that the cap reciprocates in accordance with the updated chest compression depth value, thereby performing chest compression by the cap.

21. The method for correcting the loss of chest compression depth for a patient according to claim 20, characterized in that the first notification unit sequentially outputs a first message to notify that the patient's chest compression start position has been updated and a second message to notify the difference between the existing patient's chest compression start position before the update and the updated patient's chest compression start position, and transmits information regarding the first message and the second message to the control unit in real time.

22. The method for correcting the loss of chest compression depth for a patient according to claim 21, characterized in that when the first and second messages are output once each, the control unit expands or contracts the piston so that the cap reciprocates in accordance with the updated chest compression depth value, thereby performing chest compression by the cap.

23. The method for correcting the loss of chest compression depth for a patient according to claim 17, wherein step d) is characterized in that, if the combined value of the isolation distance between the patient's chest and the cap and the initial chest compression depth is less than a critical value for the chest compression depth, the control unit expands and contracts the piston so that the cap reciprocates in accordance with the set chest compression depth value, thereby performing chest compression by the cap.

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