Sternal compression assist device

Abstract

To provide a sternal compression assist device that corrects the posture of a person performing sternal compressions and enables high-quality sternal compressions.SOLUTION: A sternal compression assist device comprises: a lower surface configured to contact the chest of a patient; an upper surface (11) formed on the side opposite the lower surface, configured to contact the heel of the hand of a person performing sternal compressions, and being horizontal relative to the chest of the patient; and a side surface (13) connecting the upper and lower surfaces. The device is formed of a convexly downward block body that can stably compress the chest of the patient only when a force is applied vertically relative to the chest.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a chest compression assist device for assisting chest compression. [Background technology]

[0002] Although products have been developed with the aim of improving the quality of chest compressions (cardiac massage), most of them are aimed at medical professionals, training courses, and seminars.

[0003] As a chest compression assisting device that can be used in situations where chest compressions are actually performed, there is provided one such as the one described in Patent Document 1 below, which makes it easier to apply weight to the area to be compressed and concentrates the force to effectively compress the heart. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-70420 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the 5th edition of Standard Emergency Medicine, chest compressions should be performed strongly, quickly, and continuously, and for adults, they must be performed strongly to a depth of at least 5 cm. However, it is not easy to perform continuous chest compressions at this depth for a long period of time, and in addition, the chest must be compressed at a rhythm of 100 to 120 times per minute. In order to maintain the appropriate rhythm and continue to compress the chest to a sufficient depth, an auxiliary device is required for the chest compression performer.

[0006] When performing chest compressions, the performer must place their wrists on the victim's sternum, extend their arms straight, and assume a posture where their shoulders to wrists are perpendicular to the victim's chest. By performing chest compressions in the correct posture described above, the performer's force is effectively transmitted to the victim's sternum, leading to deep, high-quality chest compressions and also conserving the performer's physical strength, allowing for sustained, high-quality chest compressions.

[0007] However, the cardiac massage assisting device disclosed in Patent Document 1 is highly stable when placed on the chest of the injured person, so when performing chest compressions, the performer's arms can press even if they are not positioned straight and perpendicular to the chest of the injured person, and in such cases, it is not possible to apply sufficient force for chest compressions.

[0008] The present invention has been made in view of the above-mentioned problems, and aims to provide a chest compression assisting device that corrects the posture of the chest compression performer and achieves high-quality chest compression. [Means for solving the problem]

[0009] The chest compression assisting device of the present invention is composed of a downwardly convex block body (10) that has a lower surface (12) that comes into contact with the chest of the injured person, an upper surface (11) formed on the opposite side of the lower surface that comes into contact with the wrist of the person performing chest compression and is horizontal to the chest of the injured person, and a side surface (13) connecting the upper and lower surfaces, and can stably compress the chest of the injured person only when force is applied perpendicularly to the chest. [Effects of the Invention]

[0010] In the present invention, the block body (10) placed along the sternum of the injured person has a downward convex shape that allows stable compression only when force is applied perpendicularly, so the chest compressor corrects his / her posture so that his / her shoulders to wrists are perpendicular to the injured person to ensure stable compression. As a result of this correction, chest compressions can be performed in the correct posture, and chest compressions can be continued continuously with sufficient depth. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of the overall chest compression assist device according to an embodiment of the present invention, in which the assist device main body and a handkerchief are connected together. [Figure 2] FIG. 2 is a perspective view of the entire assisting tool body. [Figure 3] FIG. 2 is a plan view of the assisting device main body as seen from above. [Figure 4] FIG. 10 is a bottom view of the main body of the pressure support device as seen from below. [Figure 5] FIG. 2 is a side view of the assisting device main body. [Figure 6] FIG. 1 is a diagram showing the configuration of a handkerchief. [Figure 7] 10A and 10B are diagrams showing the configurations of an auxiliary tool-side connector and a cover-side connector as connectors. [Figure 8] FIG. 10 is a perspective view of the entire chest compression assist device according to Modification 1. [Figure 9] FIG. 10 is a side view of a first modified example of the chest compression assist device. [Figure 10] FIG. 10 is a bottom view of the chest compression assist device according to the first modified example. [Figure 11] FIG. 10 is a perspective view of the entire chest compression assist device according to a second modified example. [Figure 12] FIG. 10 is a side view of a second modified example of the chest compression assist device. [Figure 13] FIG. 10 is a bottom view of a second modified example of the chest compression assist device. DETAILED DESCRIPTION OF THE INVENTION

[0012] A chest compression assisting device according to an embodiment of the present invention will now be described. The chest compression assisting device (1) according to the embodiment of the present invention is used when performing chest compressions by pressing the chest of an injured person lying on their back with the hands of the person performing the compression. The chest compression assisting device (1) according to this embodiment comprises an assisting device main body (10) and a handkerchief 31 which is a cover for covering and concealing the chest of the injured person.

[0013] The support device main body (10), which is a block body placed along the sternum of the injured person, is composed of a main body bottom surface (12) that comes into contact with the chest of the injured person, a main body top surface (11) that comes into contact with the wrists of the user, is horizontal to the chest of the injured person lying on their back, and has a larger area than the main body bottom surface (12), and a main body side surface (13) that connects the main body top surface (11) and the main body bottom surface (12). This support device main body (10) is made of, for example, lightweight elastic resin such as rubber or silicone, or clay, and has a three-dimensional shape that tapers downward and protrudes downward.

[0014] As an example, when the upper surface (11) and the lower surface (12) of the main body are formed as elliptical planes, the ellipse of the upper surface (11) of the main body has a long axis of 7 cm and a short axis of 4 cm, taking into consideration the size of the wrist of the user, and the ellipse of the lower surface (12) of the main body is smaller in both long and short axes than the ellipse of the upper surface (11), with a long axis of 4 cm and a short axis of 1 cm. In addition, the height of the assisting device main body (10) (the height of the side surface (13) of the main body) is formed to be 2.5 cm, and the area of ​​the horizontal cross section of the assisting device main body (10) becomes smaller from the upper surface (11) to the lower surface (12) of the main body.

[0015] By making the shape of the assisting device main body (10) convex downward, the force required for chest compression can be applied stably to the chest of the injured person only when the person performing chest compressions presses the front surface (11) of the main body (10) straight down vertically with their wrists. In other words, because the area of ​​the lower surface (12) of the assisting device main body (10) is small, if the person performing chest compressions presses the front surface (11) of the main body (10) diagonally, the assisting device main body (10) will fall sideways and will not be able to press down on the chest of the injured person. In this way, by using the assisting device main body (10), the person performing chest compressions can correct their posture so that their shoulders to wrists are perpendicular to the injured person, allowing them to perform chest compressions in the correct posture and continue chest compressions with sufficient depth.

[0016] The shape of the support device main body (10) can be modified as appropriate, as long as it has a downward convex shape that allows the user to stably press down on the victim's chest only when the user presses down on the main body upper surface (11) vertically. For example, the following modifications are possible. Modification 1 (see Figures 8 to 10) is a case in which the main body lower surface (12) is shaped like a long, narrow rectangle with rounded corners. The reason for rounding the corners of the main body lower surface (12) is to prevent injury to the victim's chest when compressing the sternum. Even in this case, the area of ​​the horizontal cross section decreases as it approaches the main body lower surface (12).

[0017] Next, in Modification 2 (FIGS. 11 to 13), the upper surface (11) of the assisting device main body (10) is elliptical, the shape of the assisting device is oval or close to a hemisphere, and the lower surface (12) of the main body is a curved surface that is convex downward. According to the assisting device main body (10) of Modification 2, since the lower surface (12) of the main body is curved, when the assisting device main body (10) is placed on the chest of the injured person, it is less stable than in the above embodiment, and the person performing chest compressions needs to press down the upper surface (11) of the main body accurately and vertically in a more correct posture.

[0018] A solar panel (21) and a switch (23) are installed on the top surface (11) of the assistive device main body (10), and in order to prevent malfunction due to pressure caused by chest compressions or malfunction due to contact with the user's wrist, recesses are provided on the top surface (11) to match the respective shapes. As a result, the top surface of the assistive device main body (10) is formed with an uneven shape.

[0019] The results of a survey on basic life support and AED use conducted by Asahi Kasei Zoll Medical Co., Ltd. and published on January 26, 2022, targeting 500 members of the public (excluding medical professionals) asked whether they believed they could perform life-saving measures such as chest compressions and AED use if a woman collapsed in front of them, assuming they had sufficient knowledge of life-saving techniques. 34.8% answered "yes," while the remaining 58.0% answered "I want to perform life-saving measures but I'm hesitant," "I can't, don't want to," or "I don't know." Of those who answered "I want to perform life-saving measures but I'm hesitant," 58.0% answered "I want to perform life-saving measures but I'm hesitant," while 42.0% answered "I don't know." The most common reason given by those who answered "I want to perform life-saving measures but I'm hesitant," "I can't, don't want to," or "I don't know" was "I'm hesitant to remove the victim's clothes or touch their skin," followed by "I'm worried about being sued for sexual harassment." This highlights the need for methods to reduce psychological resistance to chest compressions and other cardiopulmonary resuscitation techniques in critical situations where every minute counts.

[0020] In view of this problem, in this embodiment, a handkerchief 31 is detachably connected to the support device main body 10. The handkerchief 31 is sized to cover the chest of the injured person, for example, 40 cm long and 20 cm wide, and has a hole in the center cut out to fit the shape of the support device main body 10 (see Figure 6).

[0021] The assisting tool side connectors (24) attached to the side surfaces (13) of the main body and the cover side connectors (32) attached to the handkerchief (31) are formed with fasteners such as snap buttons. For example, the assisting tool side connectors (24) are attached to the side surfaces (13) of the main body on both the left and right sides of the assisting tool main body (10), and the cover side connectors (32) are attached to the left and right edges of the part of the handkerchief (31) cut out to fit the shape of the assisting tool main body (10).

[0022] By connecting the assisting device main body (10) and the handkerchief (31) via a connector consisting of the assisting device side connector (24) and the cover side connector (32), chest compressions can be performed with the victim's chest covered with the handkerchief (31). This protects the victim's privacy as their chest is not exposed when performing chest compressions, and also reduces the psychological resistance of the person performing chest compressions to performing chest compressions.

[0023] The speaker (22) attached to the inside of the side surface (13) of the main body of the assisting device main body (10) has speaker holes attached at four locations on the left, right, front and back of the side surface (13) of the main body, for example.

[0024] Inside the assistive device main body (10) are installed a solar panel (21), a switch (23), a speaker (22), and a control circuit (not shown) that is connected to a rechargeable battery (not shown) for storing electricity generated by the solar panel (21) and controls the operation of these components.

[0025] The content that can be heard from the speaker 22 includes, for example, a voice guiding the steps of cardiopulmonary resuscitation and a rhythmic sound of 110 / minute. For example, when guiding the steps of cardiopulmonary resuscitation, the following voice is heard: "1. Check that your surroundings are safe." "2. Tap the person who has collapsed on both shoulders and ask in each ear, 'Are you OK?'" "3. If there is no response, call for help by shouting." "4. Call 119 and ask for an AED." "5. Watch the chest and stomach movements to see if the person is breathing normally. Sobbing is not normal breathing." "6. If the person is not breathing normally, remove their clothing or roll up their clothes as much as possible." "7. Check the position of the center of the person's chest." "8. Place the bottom of the product over the center of the person's chest, and cover the person's entire chest with a handkerchief." "9. Perform chest compressions in time with the rhythmic sound that plays. Extend your arms straight and press firmly on the person's chest from directly above to prevent the product from tipping sideways."

[0026] Below, we will explain how to perform chest compressions using this chest compression assist device (1). First, press the switch (23) on the top surface (11) of the main body of the chest compression assist device (1) and start cardiopulmonary resuscitation by following the audio guidance that is played. Note that the following paragraph

[0023] corresponds to the part from "7. Check the position of the center of the chest of the person who has collapsed" in the audio guidance given as an example in

[0021] .

[0027] After holding the end of the handkerchief (31) and identifying the position of the victim's sternum or the center of the chest, the support device main body (10) is positioned along the victim's sternum.

[0028] Release the end of the handkerchief (31) and cover the victim's chest with the handkerchief (31).

[0029] Follow the audio guide and perform chest compressions in time with the rhythmic sound of 110 beats per minute.

[0030] After completing chest compressions, press the switch (23) again to stop the voice guidance and rhythmic sounds. [Explanation of symbols]

[0031] 1 Chest compression aid 10. Auxiliary device body 11 Top of main body 12 Bottom of main body 13 Side of the main body 21 Solar Panels 22 speakers 23 Switch 24 Auxiliary device side connector 31 Handkerchief 32 Cover side connector

Claims

1. A chest compression assisting device that is placed on the chest of a victim lying on their back during chest compressions to assist chest compressions. A chest compression assisting device comprising an assisting device body having an upper surface that is pressed by the wrist of the person performing chest compressions and a lower surface that comes into contact with the chest of the injured person, the assisting device body having a downward convex shape such that the contact surface of the lower surface of the body with the chest is smaller than that of the upper surface of the body, and the assisting device body is configured so that when the person performing chest compressions presses down on the upper surface of the body diagonally, the assisting device body will fall sideways, but will only stably press down on the chest when the person performing chest compressions presses down on the upper surface of the body vertically.

2. 2. The chest compression assist device according to claim 1, wherein the upper surface and the lower surface of the assist device main body are parallel flat surfaces.

3. 2. The chest compression assist device according to claim 1, wherein the upper surface of the assist device main body is a flat surface, and the lower surface of the main body is a downwardly convex curved surface.

4. 2. The chest compression assist device according to claim 1, further comprising a handkerchief that serves as a cover for covering and hiding the chest of the injured person and is detachably connected to the assist device main body.

5. 2. The chest compression assist device according to claim 1, further comprising a speaker and a solar panel for supplying electricity to the speaker, wherein the speaker produces a voice guiding the cardiopulmonary resuscitation procedure and a rhythmic sound of 110 beats per minute.

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