JP-7855136-B2 - Emergency medical device for chest compressions and defibrillation of a patient, and method for correcting loss of chest compression depth in a patient.

JP7855136B2JP 7855136 B2JP7855136 B2JP 7855136B2JP-7855136-B2

Inventors

ソン、インホ
チョイ、ヨンホ

Assignees

シーユーメディカルシステムズインコーポレイテッド

Dates

Publication Date: 20260507
Application Date: 20220727
Priority Date: 20220720

Claims (20)

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.
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.
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.
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.
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.
The control unit optimizes the starting position of chest compression for a patient according to claim 5, 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.
The control unit optimizes the starting position of chest compressions for the patient by updating it at regular intervals, as described in claim 6, for emergency treatment of chest compressions and defibrillation.
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 a motor for driving the piston and current position information of the piston from the sensor, and updates the starting position of chest compressions of the patient when a change in the starting position of chest compressions of the patient is detected.
The emergency treatment device for chest compression and defibrillation of a patient, according to claim 8, is characterized in that the sensor is provided in the drive circuit of the motor and includes a first sensing sensor that, 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 patient's chest shape can be changed using the difference in electrical information, and transmits whether or not the patient's chest shape can be changed to the control unit.
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 piston distance information, and transmits the piston distance information to the control unit.
The emergency treatment device for chest compression and defibrillation of a patient according to claim 9, characterized in that it includes a first notification unit that 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.
The first notification unit outputs a third message when the difference between the starting position of chest compressions for an existing patient and the updated starting position of chest compressions for a patient exceeds a specific critical value; a fourth message when the starting position of chest compressions for a patient is updated, requesting 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.
The control unit updates the chest compression depth and the number of chest compressions after outputting the fourth message from the first notification unit, when the chest compression depth and the number of chest compressions are selected via the plurality of buttons, as described in claim 12, for emergency treatment of a patient's chest compressions and defibrillation.
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 equipped with a display.
The emergency treatment device for chest compression and defibrillation of a patient, as described in claim 1, characterized in that the hood moves by the sliding of the support base.
The support plate is characterized by including 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 compressions are being performed, as described in claim 1, for emergency treatment devices for chest compressions and defibrillation of a patient.
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.
Step a) is characterized in that, after the control unit receives a position value of the lower end of the piston from the first sensing sensor, it adds a pre-inputted width value of the 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.
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.
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, further comprising the step of the control unit extending and contracting the piston so that the cap reciprocates in accordance with the updated chest compression depth value after outputting the message, thereby enabling chest compression by the cap.

Description

This invention relates to an emergency treatment device for chest compression and defibrillation of a patient, and a method for correcting the loss of chest compression depth in a patient. More specifically, it relates to an emergency treatment device for chest compression and defibrillation of a patient, and a method for correcting the loss of chest compression depth in a patient, which corrects the loss of chest compression depth due to chest shape deformation that occurs during the process of compressing the patient's chest with a cap provided on the emergency treatment device, thereby ensuring that chest compression is performed accurately. Cardiopulmonary resuscitation (CPR) is a method that involves repeating a series of steps, including chest compressions, airway maintenance, and artificial respiration. More specifically, when a patient is suspected of cardiac arrest, after confirming the safety of the scene, checking the responsiveness and breathing status of the collapsed person, call for help from those nearby and quickly report to emergency services. Then, with the heels of your hands placed on top of each other, compress the center of the chest (avoiding the solar plexus, but around the center of the nipples) 30 times with straight elbows, compressing to a depth of 4-6 cm. After chest compressions, ensure the airway is open and, while confirming that the chest is expanding, perform artificial respiration twice, at 1-25 seconds per breath. Alternate between chest compressions and artificial respiration twice. However, even with cardiopulmonary resuscitation (CPR) training, ordinary people face challenges when cardiac arrest occurs, including unfamiliarity with CPR, the strain of rib injuries, and the inability to accurately determine compression depth due to varying chest heights for each patient. 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 this CPR device is its lightness and portability. Another advantage is the elastic nature of compressed air, which allows gas-driven CPR devices to cause less chest injury 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 when the patient is admitted to the hospital. 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. Thus, because cardiopulmonary resuscitation (CPR) devices have the problem of not being able to accurately confirm whether a patient has experienced cardiac arrest, they need to be implemented in a device that integrates an automated external defibrillator (AED), a device that analyzes the electrocardiogram in emergency situations, and used in emergency situations. On the other hand, a device that combines a cardiopulmonary resuscitation (CPR) device and an automated external defibrillator (AED) has been published as a registered patent in the Republic of Korea, Patent No. 10-1956053 (Title of Invention: Cardiopulmonary Resuscitation Device with Adjustable Depth of Compression During Chest Compressions; hereinafter referred to as "Prior Document"). The aforementioned prior art describes a cardiopulmonary resuscitation (CPR) device comprising a chest compression unit equipped with a chest compression means for compressing the patient's chest, a control means for analyzing the patient's electrocardiogram and controlling electrical shocks, and a defibrillator unit equipped with pads that attach to the patient. The device allows for easy CPR by adjusting the chest compression depth of the chest compression unit through the 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. However, the aforementioned prior art described a problem: when compressing the patient's chest in its initial state before chest compression, the chest deforms, causing the chest compression depth to disappear and resulting in errors in chest compression depth. These errors make it difficult to accurately perform cardiopulmonary resuscitation (CPR) at the chest compression site, thus failing to provide the effect of facilitating CPR described in the prior art. 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 medical device for chest compressions and defibrillation of a patient, as shown in Figure 1.Figure 3 is a block diagram showing a unit provided i