Piston cover of a cardiopulmonary resuscitation device

Abstract

A cover that fits onto a piston 310 for compressing a patient's chest provided in a cardiopulmonary resuscitation device according to an embodiment of the present invention. The cover has a pair of grooves 6024a, 6024b formed between a first piston fitting portion 611a and a second piston fitting portion 611b that form a piston fitting port 6110, and between a third piston fitting portion 611c and a fourth piston fitting portion 611d. When the piston 310 is fitted into the piston fitting port 6110, the pair of grooves 6024a, 6024b includes a first pad upper portion 610 composed of a piston fitting portion 611 into which a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn, and a first pad lower portion 620 that generates a negative pressure and compresses the chest compression point of the patient on the lower surface when the piston 310 is expanded, and when the piston 310 is contracted, pulls the patient's chest on the lower surface with the negative pressure and moves it upward. A first pad 600 is integrally formed. A protruding member 720 is provided so as to fit into the first pad lower portion 620, and a first plate 700 that fits into the first pad lower portion 620 and forms a gap space (A) is included.

Description

Technical Field

[0001] The present invention relates to a piston cover of a cardiopulmonary resuscitation device, and more particularly to a piston cover of a cardiopulmonary resuscitation device that can continuously provide a buffering action for relaxing and distributing the pressure acting on the patient's chest during the emergency treatment process of the patient.

Background Art

[0002] In the prior art, various types of cardiopulmonary resuscitation (CPR) devices are known. One such device is driven by compressed air or breathing gas (Jolife AB, Lund, Sweden; LucasTM). The unique advantage of the cardiopulmonary resuscitation device is that it is light and portable. Another advantage is the elastic property of compressed air, which causes the gas-driven cardiopulmonary resuscitation device to cause less damage to the patient's chest than a device equipped with a rigid compression means. The known device can be used as emergency equipment in a life-saving situation. Also, in the known device, when the patient is admitted to the hospital, the driving gas is supplied from a hospital air supply line suitable for uninterrupted blows of cardiopulmonary resuscitation.

[0003] However, even by utilizing the elastic property of compressed air, the material of the compression means itself is hard, and when compressing the patient's chest, a strong pressure is applied to the patient's chest, resulting in problems of inducing rib fractures and hemothorax during the cardiopulmonary resuscitation process.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a piston cover of a cardiopulmonary resuscitation device that can continuously provide a buffering action for relaxing and distributing the pressure acting on the patient's chest during the patient's chest compression process in order to improve the conventional compression means.

[0005] However, the technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those with ordinary knowledge in the technical field to which the present invention belongs from the following description.

Means for Solving the Problems

[0006] A cover fitted to a piston 310 for compressing a patient's chest provided in a cardiopulmonary resuscitation device according to an aspect of the present invention for achieving the above object, wherein the cover is between a first piston fitting portion 611a and a second piston fitting portion 611b forming a piston fitting port 6110, and a third piston fitting portion 611c and a fourth piston fitting portion 611d. A pair of grooves 6024a, 6024b are formed therebetween. When the piston 310 is fitted into the piston fitting port 6110, a first pad upper portion 610 composed of a piston fitting portion 611 into which a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn is provided in the pair of grooves 6024a, 6024b. When the piston 310 is expanded, a negative pressure is generated while compressing the chest compression point of the patient on the lower surface. When the piston 310 is contracted, a first pad lower portion 620 that pulls the patient's chest on the lower surface with the negative pressure and moves it upward is integrally formed. A first pad 600; a protruding member 720 is provided so as to be fitted into the first pad lower portion 620, and a first plate 700 that is fitted into the first pad lower portion 620 and forms a gap space (A).

[0007] Also, a cover that fits onto a piston 310 for compressing a patient's chest provided in a cardiopulmonary resuscitation device according to another aspect of the present invention, wherein the cover has a first piston fitting portion 811a and a second piston fitting portion 811b that form a piston fitting port 8110, and a pair of grooves 8024a, 8024b are formed between a third piston fitting portion 811c and a fourth piston fitting portion 811d. When the piston 310 is fitted into the piston fitting port 8110, a second pad upper portion 810 composed of a piston fitting portion 811 into which a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn is provided in the pair of grooves 8024a, 8024b. When the piston 310 is expanded, negative pressure is generated while compressing the chest compression point of the patient on the lower surface. When the piston 310 is contracted, a second pad lower portion 820 that pulls the patient's chest on the lower surface with the negative pressure and moves it upward is integrally formed; a second pad 800; and a first protruding member 920 and a second protruding member 930 are provided so as to be fitted into the second pad lower portion 820, and a second plate 900 that is fitted into the second pad lower portion 820 to form gap spaces (A, B).

Effects of the Invention

[0008] The cover of the present invention can prevent rib fractures and hemothorax from occurring during the chest compression process of the patient by continuously providing the patient with a buffering action that relaxes and distributes the pressure acting on the patient's chest during the chest compression process.

[0009] 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 belongs from the following description.

Brief Description of the Drawings

[0010]

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DETAILED DESCRIPTION OF THE INVENTION

[0011] 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 or functional explanation, and the scope of the 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 changed and can have various forms, the scope of the rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, since the objects or effects presented in the present invention do not mean that a specific embodiment should include all of them or only such effects, the scope of the rights of the present invention should not be construed as being limited thereby.

[0012] The meanings of the terms in the present invention are understood as follows.

[0013] Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, the first component can be named the second component, and similarly, the second component can also be named the first component. It should be understood that when a component is "connected to" another component, it can be directly connected to the other component in question, but there may also be other components in between. In contrast, when a component is "directly connected to" another component, it should be understood that there are no other components in between. On the other hand, other expressions for explaining the relationship between components, namely, "between" and "immediately between", or "adjacent to" and "directly adjacent to", should be analyzed in the same way.

[0014] Singular expressions include plural expressions unless the context clearly indicates otherwise. Also, terms such as "including" or "having" are intended to specify the presence of the recited features, numbers, steps, operations, components, parts, or combinations thereof, and should be understood not to exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0015] All terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention pertains, unless otherwise defined. Terms defined in commonly used dictionaries should be construed to be consistent with the meaning in the context of the related art, and should not be construed to have an ideal or overly formal meaning unless clearly defined in the present invention.

[0016] FIG. 1 is a perspective view of a cardiopulmonary resuscitation device according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of the cardiopulmonary resuscitation device in FIG. 1.

[0017] As shown in FIGS. 1 and 2, the cardiopulmonary resuscitation device of the present invention includes a support plate 100 for chest compression of a patient, a support base 200, and a hood 300.

[0018] The support plate 100 is formed in a shape for supporting the back of a patient in need of cardiopulmonary resuscitation, and includes a sliding guide 110 for sliding the support base 200 and the hood 300, and a stopper 120 for fixing the positions of the support base 200 and the hood 300.

[0019] For the height adjustment of the piston 310, the support plate 100 is formed with an internal space on the side where the frame 115 provided on the sliding guide 110 can be retracted.

[0020] The sliding guide 110 is provided at both edges of the support plate 100, and one end and the other end of the support base 200 are slidably coupled so that the support base 200 can be slid forward or backward.

[0021] As shown in FIG. 2(b) which is an enlarged view of the A region in FIG. 2(a), the sliding guide 110 is provided with a frame 115 that can be retracted into or pulled out from the inside of the support plate 100, so that the distance between both ends of the support base 200 can be adjusted, thereby adjusting the height of the piston 310.

[0022] Here, the reason for adjusting the height of the piston 310 is to prevent a situation where the piston 310 cannot compress the chest compression point of a specific patient because each patient has a different body shape.

[0023] The stopper 120 is provided on the sliding guide 110 and is formed in a shape that can be tied to one end and the other end of the support base 200. Thus, the stopper 120 is tied to one end and the other end of the support base 200, and the positions of the support base 200 and the hood 300 are fixed from the tie with one end and the other end of the support base 200.

[0024] The support base 200 is coupled to the sliding guide 110 so that the lower end of the piston 310 moves to a position where it compresses the patient's chest. In one embodiment of the present invention, the shape for supporting the hood 300 is arched, but it is not limited thereto.

[0025] One end and the other end of the support base 200 are movably coupled to a pair of sliding guides 110, so that the support base 200 slides forward or backward about the sliding guide 110, or the distance between both ends can be adjusted by pulling in and pulling out the frame 115.

[0026] It is desirable that the forward and backward sliding of the support base 200 and the adjustment of the distance between both ends are performed before the piston 310 compresses the patient's chest. When the support base 200 moves to a position for the piston 310 to compress and relax the patient's chest, one end and the other end are constrained by a pair of stoppers 120.

[0027] The support base 200 is shaped such that 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 detachment, together with the hood 300, it can be detached from the support plate 100 and used as another device.

[0028] The hood 300 is coupled to one side of the support base 200, more specifically, to the center part (Arch Crown) of the arched support base 200, and has a piston 310 for compressing the patient's chest and a control unit 320 for contracting or expanding the piston 310.

[0029] Such a hood 300 can have the control unit 320 exposed to the outside or provided inside.

[0030] Before compressing the patient's chest, the piston 310 is in a state separated from the patient's chest, and is operated by the control unit 320 to compress and then leave the patient's chest, repeating the process of relaxing the patient's chest.

[0031] The piston 310 operates based on a continuous compression mode that continuously compresses the patient's chest compression point in a chest compression mode set by the control unit 320, or a compression 30:2 mode in which after 30 patient chest compressions, two artificial breaths are performed and the patient's chest compression and artificial respiration are parallel, so as to provide chest compression-based first aid to the patient.

[0032] The control unit 320 can control not only the operation of the piston 310 but also the operation of the cardiopulmonary resuscitation device, and a plurality of buttons can be provided for this purpose.

[0033] Although not shown, as a specific example, the plurality of buttons may include a power button for turning on / off the power of the cardiopulmonary resuscitation device, a stop button for stopping the operation of the piston 310, a compression mode setting button for causing the piston 310 to perform chest compression (CPR) on the patient or setting the chest compression mode of the piston 310, a compression depth setting button for setting the chest compression depth (depth) of the piston 310, and a compression speed setting button for setting the chest compression speed (number of times) of the piston 310.

[0034] When an input signal is input to the power button and the power of the cardiopulmonary resuscitation device is turned on, the control unit 320 performs a self test to determine the initial setting and the feasibility of normal operation. When the cardiopulmonary resuscitation device is on, if an input signal is input to the power button again, the initial setting is initialized and the power of the cardiopulmonary resuscitation device is turned off.

[0035] When the chest compression mode set by the compression mode setting button is the continuous compression mode, the control unit 320 controls the operation of the piston 310 to repeat the patient's chest compression and relaxation. On the contrary, when the chest compression mode set by the compression mode setting button is the compression 30:2 mode, the control unit 320 can control the operation of the piston 310 so that two artificial breaths are performed after the patient's chest is compressed 30 times.

[0036] When an input signal is input to the compression depth setting button, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed at at least one depth of 4 cm, 4.5 cm, 5 cm, or 5.5 cm. Further, when an input signal is input to the compression depth setting button in the initialization state, the patient's chest is 5 cm. When a signal is input thereafter, the patient's chest is 5.5 cm. When another signal is input, the patient's chest is 4 cm. When a further signal is input, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed by 4.5 cm only.

[0037] When an input signal is input to the compression speed setting button, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed at at least one number of times of 100 times, 110 times, or 120 times. Further, when an input signal is input to the compression speed setting button in the initialization state, the patient's chest is compressed 110 times. When a signal is input thereafter, the patient's chest is compressed 120 times. When a further signal is input, the control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed 100 times only.

[0038] Such a cardiopulmonary resuscitation device can be provided with a cover that is attached to the lower end of the piston 310, is made of a member having a different hardness from the hard piston 310, and can continuously provide a buffering action for relaxing and distributing the pressure acting on the patient's chest.

[0039] As shown in FIGS. 3 to 6, the cover according to an embodiment of the present invention includes a first pad 600 that directly compresses the patient's chest while the lower end of the piston 310 is fitted, and a first plate 700 that is fitted to the first pad 600 and is disposed inside the first pad 600 so that a gap space (A) can be formed.

[0040] FIG. 3 is a perspective view of the first pad constituting the cover according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3, FIG. 5 is a perspective view of the lower part of the first pad included in region B in FIG. 4, and FIG. 6 is a plan view of the lower part of the first pad included in region B in FIG. 4.

[0041] As shown in FIGS. 3 to 6, the first pad 600 has an outer shape formed by a first pad upper part 610 into which the lower end of the piston 310 is fitted and a first pad lower part 620 for pressing the patient's chest on the lower surface. In the first pad upper part 610, a piston fitting part 611 can be formed.

[0042] The first pad upper part 610 forms a piston fitting port 6110 by a piston fitting part 611 integrally formed in a bent shape from the first pad lower part 620. After the lower end of the piston 310 contacts the first plate 700, when a fastening member (not shown) formed on a part of the outer peripheral surface is drawn into the piston fitting port 6110 due to the rotation of the cover, the piston 310 can be fastened to the first pad upper part 610.

[0043] The piston fitting part 611 forms a piston fitting port 6110, and the lower end of the piston 310 is fitted to the first pad upper part 610 by the piston fitting port 6110.

[0044] Further, the piston fitting part 611 is a part provided in a bent state from the first pad upper part 610 to form a piston fitting port 6110 into which the piston 310 can be drawn, and includes a first piston fitting part 611a, a second piston fitting part 611b, a third piston fitting part 611c, and a fourth piston fitting part 611d.

[0045] Further, between the first piston fitting portion 611a and the second piston fitting portion 611b, and between the third piston fitting portion 611c and the fourth piston fitting portion 611d of the piston fitting portion 611, a pair of grooves 6024a, 6024b are formed. When the piston 310 is fitted into the piston fitting port 6110, a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn into the pair of grooves 6024a, 6024b.

[0046] That is, the piston 310 can be fastened to the first pad 600 when the lower end portion contacts the first plate 700 and the fastening member is drawn into the pair of grooves 6024a, 6024b.

[0047] Further, in the process of connecting and disconnecting the fastening member of the piston 310 and the pair of grooves 6024a, 6024b of the piston fitting portion 611, the lower part is expanded (or flows) outside the upper part 610 of the first pad so that the fastening member of the piston 310 is drawn in or out from the pair of grooves 6024a, 6024b. Therefore, an expansion space 6101 can be formed in the gap space with the upper part 610 of the first pad.

[0048] Such an upper part 610 of the first pad can be made of at least one of polyurethane, polypropylene, and biocompatible silicone, which are hard materials, so that the contraction and expansion of the piston 310 can be transmitted to the cover regardless of various external forces applied thereto.

[0049] In addition, when the upper part 610 of the first pad is made of biocompatible silicon, it has a Shore A hardness of 40 to 60, and when it is made of other materials, it has an Asker C hardness of 25 to 30. In one embodiment of the present invention, the Asker C hardness is measured by an Asker hardness tester that measures the hardness based on the depth to which a push pin of a predetermined shape is pressed into the surface of a sample by the force of a spring until the resistance of the sample and the force of the spring are balanced. The shore hardness can be measured by measuring the height to which a falling object with a small diamond fixed at its end bounces up when it falls from a certain height.

[0050] The lower part 620 of the first pad is the B region part in FIG. 4, is integrally formed with the upper part 610 of the first pad, and when the piston 310 expands toward the patient's chest, it can directly contact the chest compression point of the patient and compress the patient's chest.

[0051] Such a lower part 620 of the first pad has an outer shape formed by a housing 621, and the housing 621 includes a plurality of air flow ports 623 and a seating part 624.

[0052] In addition, the housing 621 is composed of an integrally formed outer housing 621a and an inner housing 621b, and the lower surface will contact the patient's chest.

[0053] In addition, at the boundary between the outer housing 621a and the inner housing 621b of the housing 621, a protruding member insertion port 622 into which a protruding member 720 provided on the first plate 700 can be fitted is formed.

[0054] The protruding member insertion port 622 is formed in a circular shape at the boundary between the outer housing 621a and the inner housing 621b so that the protruding member 720 can be fitted.

[0055] The outer housing 621a and the inner housing 621b can be embodied in a bellows shape so that the volume of the gap space (A) can change.

[0056] Also, the upper parts of the external housing 621a and the internal housing 621b are fitted to the bottom 710 of the first plate 700, and the upper parts of the external housing 621a and the internal housing 621b can be provided with (or coated with) an adhesive means (e.g., an adhesive) so that the fitting structure between the first pad 600 and the first plate 700 is maintained. However, the adhesive means is not limited to being provided on the upper parts of the external housing 621a and the internal housing 621b, and can also be provided on the bottom 710.

[0057] Also, the external housing 621a and the internal housing 621b are configured such that a side wall forming the protruding member insertion port 622 protrudes upward, so as to generate a gap space (A) between the internal housing 621b and the first plate 700 in terms of the fitting structure between the first pad 600 and the first plate 700.

[0058] When pressure is transmitted from the patient's chest to the lower surface during the patient's chest compression process, a plurality of air flow ports 623 are formed on the lower surface of the internal housing 621b so that a volume change occurs due to the air flow in the gap space (A).

[0059] When air flows out to the outside along the air flow ports 623 by the piston 310 that expands during the patient's chest compression process, the volume of the gap space (A) between the upper side of the internal housing 621b and the first plate 700 can be reduced. On the contrary, after the patient's chest compression ends and the patient's chest moves away, the volume can be increased by the air flowing in through the air flow ports 623.

[0060] Such an inner housing 621b has a lower surface that contacts the patient's chest during the chest compression process. When the piston 310 expands, air flows out from the gap space (A) to the outside, and while the volume of the gap space (A) decreases, when the seating portion 624 provided in the gap space (A) contacts the bottom 710 of the first plate 700, a 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 contacts the chest compression point of the patient can pull the patient's chest and move it upward.

[0061] Such a lower part 620 of the first pad is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene - polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone. Due to the characteristics of such materials, it can be embodied in a form that conforms to the shape of the patient's chest.

[0062] Furthermore, among the lower part 620 of the first pad, the biocompatible silicone can have a Shore A hardness of 10 - 30, and the other materials can have an Asker C hardness of 10 - 20.

[0063] On the other hand, when the lower part 620 of the first pad compresses the patient's chest, it needs to conform to the patient's chest. For this reason, the lower surface of the inner housing 621b that contacts the chest compression point of the patient is preferably made of biocompatible silicone that is easy to conform to the patient's chest among applicable materials. By continuously providing a buffering effect that relaxes and distributes the pressure acting on the patient's chest, it is possible to prevent rib fractures and hemothorax from occurring during the chest compression process of the patient.

[0064] When the first plate 700 is fitted to the lower part 620 of the first pad, the bottom 710 faces the seating portion 624 with the gap space (A) therebetween.

[0065] When the volume of the gap space (A) decreases during the patient's chest compression process, the bottom surface 710 can be brought into contact with the landing portion 624.

[0066] In such a first plate 700, a protruding member 720 that can be fitted into the protruding member insertion port 622 so as to be fitted with the lower part 620 of the first pad protrudes from the bottom 710.

[0067] The protruding member 720 can protrude in a circular shape so as to be fitted into the protruding member insertion port 622.

[0068] The cover of the present invention is not limited to being implemented by the fitting of the first pad 600 and the first plate 700, and can also be implemented by the fitting of a second pad 800 obtained by deforming the first pad 600 and a second plate 900 obtained by deforming the first plate 700.

[0069] Hereinafter, a cover according to another embodiment of the present invention implemented by the fitting of the second pad 800 and the second plate 900 will be described in detail.

[0070] FIG. 7 is a perspective view of a second pad constituting a cover according to another embodiment of the present invention, FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7, FIG. 9 is a perspective view of a lower part of the second pad included in region D in FIG. 8, and FIG. 10 is a plan view of a lower part of the second pad included in region D in FIG. 8.

[0071] As shown in FIGS. 7 to 10, the second pad 800 has an outer shape formed by a second pad upper part 810 into which the lower end of the piston 310 is fitted and a second pad lower part 820 for pressing the patient's chest on the lower surface, and a piston fitting part 811 can be formed in the second pad upper part 810.

[0072] The upper part 810 of the second pad is integrally formed in a shape bent from the lower part 820 of the second pad by a piston fitting part 811 that forms a piston fitting port 8110. After the lower end of the piston 310 contacts the second plate 900, when a fastening member (not shown) formed on a part of the outer peripheral surface due to the rotation of the cover is drawn into the piston fitting port 8110, it can be fastened to the upper part 810 of the second pad.

[0073] The piston fitting part 811 forms a piston fitting port 8110, and the piston 310 can be fitted with its lower end to the upper part 810 of the second pad through the piston fitting port 8110.

[0074] Also, the piston fitting part 811 is a part provided in a state of being bent from the upper part 810 of the second pad to form a piston fitting port 8110 into which the piston 310 can be drawn, and includes a first piston fitting part 811a, a second piston fitting part 811b, a third piston fitting part 811c, and a fourth piston fitting part 811d.

[0075] Also, a pair of grooves 8024a, 8024b are formed between the first piston fitting part 811a and the second piston fitting part 811b, and between the third piston fitting part 811c and the fourth piston fitting part 811d. When the piston 310 is fitted into the piston fitting port 8110, a fastening member formed on a part of the outer peripheral surface of the piston 310 can be drawn into the pair of grooves 8024a, 8024b.

[0076] That is, when the lower end of the piston 310 contacts the second plate 900 and the fastening member is drawn into the pair of grooves 8024a, 8024b, the piston 310 can be fastened to the second pad 800.

[0077] Further, in the process of the engagement and disengagement of the fastening member of the piston 310 with the pair of grooves 8024a and 8024b of the piston fitting portion 811, the lower part is extended (or flows) outside the upper part of the second pad 810 so that the fastening member of the piston 310 is drawn in or out from the pair of grooves 8024a and 8024b. Therefore, an expansion space 8101 can be formed in the gap space with the upper part of the second pad 810.

[0078] Such an upper part of the second pad 810 can be made of at least one of polyurethane, polypropylene, and biocompatible silicone, which are hard materials, so that the contraction and expansion of the piston 310 and various external forces applied thereto can be transmitted to the cover regardless of the external forces.

[0079] Further, when the upper part of the second pad 810 is made of biocompatible silicone, it has a Shore A hardness of 40 to 60, and in the case of other materials, it has an Asker C hardness of 25 to 30. In an embodiment of the present invention, the Asker C hardness is measured by an Asker hardness tester that measures the hardness based on the depth at which a push pin of a predetermined shape is pressed into the surface of a sample by the force of a spring and the push pin is pressed into the sample in a state where the resistance of the sample and the force of the spring are balanced. The shore hardness can be measured by measuring the height at which a falling object with a small diamond fixed at its end bounces up when it falls from a certain height.

[0080] The lower part of the second pad 820 is the D region part of FIG. 8, is integrally formed with the upper part of the second pad 810, and can directly contact the chest compression point of the patient and compress the chest of the patient when the piston 310 is expanded toward the chest of the patient.

[0081] Such a lower part 820 of the second pad is shaped by a housing 821, and the housing 821 is divided into an integrally formed first housing 821a and a second housing 821b, and includes a plurality of air flow ports 823, a first mounting part 824, a second mounting part 825, and a partitioning part 826.

[0082] The first housing 821a includes a first protruding member insertion port 822a into which a first protruding member 920 of the second plate 900 is fitted, so that the fitting of the second pad 800 and the second plate 900 is realized.

[0083] Such a first housing 821a is divided into a plurality of gap spaces (A) in which negative pressure is generated by a plurality of partitioning parts 826. Thus, when the volume of the gap space (A) decreases due to the pressure being transmitted from the patient's chest, not only can all the plurality of lower surfaces move toward the bottom 910 of the second plate 900, but also among the plurality of lower surfaces, only a part of the lower surface that contacts the chest compression point of the patient and transmits a pressure of a certain strength or more from the patient's chest can move toward the first plate 700.

[0084] The first protruding member insertion port 822a is preferably formed in a circular shape on the first housing 821a so that the first protruding member 920 can be fitted.

[0085] The second housing 821b is connected to the first housing 821a by a plurality of partitioning parts 826 due to the structure of the housing 821, and includes a second protruding member insertion port 822b into which a second protruding member 930 of the second plate 900 is fitted, so that the fitting of the second pad 800 and the second plate 900 is realized together with the first housing 821a.

[0086] The second protruding member insertion port 822b is preferably formed in a circular shape on the second housing 821b so that the second protruding member 930 can be fitted.

[0087] The first housing 821a and the second housing 821b can have side walls that protrude upward so that gap spaces (A, B) are generated between them and the bottom 910 of the second plate 900 in the fitting structure of the second pad 800 and the second plate 900.

[0088] In addition, the first housing 821a and the second housing 821b can be embodied in a bellows shape so that the volume of the gap spaces (A, B) can change.

[0089] The upper portions of the first housing 821a and the second housing 821b are coupled to the bottom 910 of the second plate 900, and the upper portions of the first housing 821a and the second housing 821b can be provided with (or coated with) an adhesive means (e.g., an adhesive) so that the fitting structure of the second pad 800 and the second plate 900 is maintained. However, the adhesive means is not limited to being provided on the upper portions of the first housing 821a and the second housing 821b, and can also be provided on the bottom 910.

[0090] The plurality of air flow ports 823 are respectively formed on the lower surfaces of the first housing 821a and the second housing 821b, and include a plurality of first air flow ports 823a formed on the lower surface of the first housing 821a and a plurality of second air flow ports 823b formed on the lower surface of the second housing 821b.

[0091] During the process in which the patient's chest is compressed by the expansion of the piston 310, the first and second air flow ports 823a, 823b allow the air in the gap space (A) between the bottom 910 of the second plate 900 and the first housing 821a and the air in the gap space (B) between the bottom 910 and the second housing 821b to flow to the outside respectively, so that the volume of the gap spaces (A, B) can be reduced.

[0092] The first landing portion 824 is provided in plurality in the gap space (A) of the first housing 821a partitioned into a plurality by a plurality of partitioning portions 826. When air in the gap space (A) flows to the outside from a plurality of first air flow ports 823a and the volume of the gap space (A) decreases, the gap space (A) is brought into a negative pressure state while contacting the bottom portion 910 of the second plate 900.

[0093] As a specific example, the first landing portion 824 surrounds the center of the lower surface of the bottom portion 910 of the second plate 900. When the peripheral portion of the lower surface of the bottom portion 910 parallel to the vertical direction of the first landing portion 824 is moved downward by the pressure applied from the fastening member provided on the piston 310 due to the expansion of the piston 310, it comes into contact with the peripheral portion of the lower surface of the bottom portion 910. Thereby, the partitioned gap space (A) can be in a negative pressure state.

[0094] The second landing portion 825 is provided in the gap space (B) of the second housing 821b. When air in the gap space (B) partitioned by a plurality of second air flow ports 823b flows to the outside and the volume of the gap space (B) decreases, the gap space (B) is brought into a negative pressure state while contacting the bottom portion 910 of the second plate 900.

[0095] As a specific example, in the second landing portion 825, when the center portion of the lower surface of the bottom portion 910 parallel to the vertical direction of the second landing portion 825 is moved downward by the pressure applied from the lower side due to the expansion of the piston 310, it comes into contact with the center portion of the lower surface of the bottom portion 910. Thereby, the gap space (B) can be in a negative pressure state.

[0096] It is desirable to provide a plurality of the partitioning portions 826 in order to partition the gap space (A) of the first housing 821a into a plurality. Each partitioning portion 826 is provided in a form that connects the first housing 821a and the second housing 821b.

[0097] Such a lower part 820 of the second pad is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene - polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone, and due to the characteristics of such materials, it can be embodied as a foam that adapts to the shape of the patient's chest.

[0098] Also, among the lower part 820 of the second pad, the biocompatible silicone can have a Shore A hardness of 10 - 30, and the other materials can have an Asker C hardness of 10 - 20.

[0099] On the other hand, when the lower part 820 of the second pad compresses the patient's chest, it needs to adapt to the patient's chest. Therefore, the lower surfaces of the first and second housings 821a, 821b that come into contact with the chest compression points of the patient are preferably made of biocompatible silicone that is easy to adapt to the patient's chest among applicable materials. Thereby, by continuously providing a buffering effect that relaxes and distributes the pressure acting on the patient's chest, it is possible to prevent rib fractures and hemothorax from occurring during the process of chest compression of the patient.

[0100] When the second plate 900 is fitted to the lower part 820 of the second pad, the bottom 910 will face the first seating part 824 and the second seating part 825 with a gap space (A, B) in between.

[0101] When the volume of the gap space (A, B) decreases during the chest compression process of the patient, the lower surface of the bottom 910 can come into contact with the seating part 624.

[0102] Such a second plate 900 is provided with a first protruding member 920 that can be fitted into the first protruding member insertion port 822a and a second protruding member 930 that is arranged adjacent to the center part of the bottom 910 rather than the first protruding member 920 and can be fitted into the second protruding member insertion port 822b so as to be fitted with the lower part 820 of the second pad.

[0103] The first protruding member 920 can protrude circularly from the bottom portion 910 so as to be fitted into the first protruding member insertion port 822a.

[0104] The second protruding member 930 can protrude circularly from the bottom portion 910 so as to be fitted into the second protruding member insertion port 822b.

[0105] Compared with the cover according to one embodiment of the present invention, the cover according to another embodiment of the present invention has a merit that the fitting structure between the pad and the plate is reinforced by embodying the fitting of the second pad 800 and the second plate 900 by a relatively large number of protruding members 920 and 930.

[0106] As described above, a detailed description of a preferred embodiment of the present invention is provided so that those skilled in the art can embody and implement the present invention. In the above, a preferred embodiment of the present invention has been described with reference thereto, but those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiment in a manner of combining them with each other. Therefore, the present invention is not intended to be limited to the embodiments appearing herein, but is intended to give the broadest scope consistent with the principles and novel features disclosed herein.

[0107] The present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the above detailed description should not be analyzed restrictively in all aspects and should be considered exemplary. The scope of the present invention is determined by a reasonable analysis of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments appearing herein, but is intended to give the broadest scope consistent with the principles and novel features disclosed herein. Also, claims that do not have an explicit citation relationship in the claims can be combined to form an embodiment or included as new claims by amendment after filing. Industrial Applicability

[0108] The piston cover of the cardiopulmonary resuscitation device of the present invention can prevent rib fractures and hemothorax from occurring during the chest compression process of the patient by continuously providing the patient with a buffering action that relaxes and distributes the pressure acting on the patient's chest during the chest compression process of the patient, so it has industrial applicability.

Claims

1. A cover that fits onto a piston 310 for compressing a patient's chest, wherein the cover, a pair of grooves 6024a, 6024b are formed between a first piston fitting portion 611a and a second piston fitting portion 611b that form a piston fitting port 6110, and between a third piston fitting portion 611c and a fourth piston fitting portion 611d. When the piston 310 is fitted into the piston fitting port 6110, a first pad upper portion 610 consisting of a piston fitting portion 611 into which a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn is provided in the pair of grooves 6024a, 6024b. When the piston 310 is expanded, a negative pressure is generated while compressing the chest compression point of the patient on the lower surface. When the piston 310 is contracted, a first pad lower portion 620 that pulls the patient's chest on the lower surface with the negative pressure and moves it upward is integrally formed, and a first pad 600; A piston cover for a cardiopulmonary resuscitation device, characterized by including a protruding member 720 provided so as to fit into the first pad lower portion 620 and a first plate 700 that fits into the first pad lower portion 620 to form a gap space (A).

2. The first pad lower portion 620, a housing 621 consisting of an integrally formed external housing 621a whose upper part is coupled to the bottom 710 of the first plate 700 and an internal housing 621b; a plurality of air flow ports 623 formed on the lower surface of the internal housing 621b so that air in the gap space (A) between the internal housing 621b and the bottom 710 can flow; and a seating portion 624 provided in the gap space (A) so as to contact the bottom 710 when the volume of the gap space (A) decreases as air in the gap space (A) flows out through the air flow ports 623. The piston cover for a cardiopulmonary resuscitation device according to claim 1, characterized by including this.

3. The piston cover for a cardiopulmonary resuscitation device according to claim 2, characterized in that a protruding member insertion port 622 into which the protruding member 720 can be fitted is formed at the boundary between the external housing 621a and the internal housing 621b of the first pad lower portion 620.

4. The piston cover of the cardiopulmonary resuscitation device according to claim 3, wherein the outer housing 621a and the inner housing 621b are formed with a side wall that forms the protruding member insertion port 622 such that a gap space (A) is generated between the bottom 710 and the first pad 600 and the first plate 700 in a fitting structure.

5. When the volume of the gap space (A) decreases such that the seating portion 624 provided in the bottom 710 and the gap space (A) of the inner housing 621b comes into contact, a 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 chest of the patient is pulled on the lower surface and moved upward. The piston cover of the cardiopulmonary resuscitation device according to claim 4, characterized in that.

6. The lower part 620 of the first pad is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone. In the case of the biocompatible silicone, it has a Shore A hardness of 10 to 30, and at least one of ethylene vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, chloroprene, and polyurethane has an Asker C hardness of 10 to 20. The piston cover of the cardiopulmonary resuscitation device according to claim 1, characterized in that.

7. The piston cover of the cardiopulmonary resuscitation device according to claim 6, wherein the lower surface of the lower part 620 of the first pad that presses the chest compression point of the patient is made of the biocompatible silicone.

8. The first pad 600 is made of at least one of polyurethane, polypropylene, and biocompatible silicone. The piston cover of the cardiopulmonary resuscitation device according to claim 1, characterized in that.

9. A cover fitted to a piston 310 for pressing the chest of a patient, The cover is Between the first piston fitting portion 811a and the second piston fitting portion 811b that form the piston fitting port 8110, and between the third piston fitting portion 811c and the fourth piston fitting portion 811d, a pair of grooves 8024a, 8024b are formed. When the piston 310 is fitted into the piston fitting port 8110, in the pair of grooves 8024a, 8024b, there is a second pad upper portion 810 composed of a piston fitting portion into which a fastening member formed on a part of the outer peripheral surface of the piston 310 is drawn. When the piston 310 is expanded, negative pressure is generated while compressing the chest compression point of the patient on the lower surface. When the piston 310 is contracted, the second pad lower portion 820 that pulls the chest of the patient upward on the lower surface with the negative pressure is integrally formed with the second pad 800. A piston cover of a cardiopulmonary resuscitation device, characterized in that a first protruding member 920 and a second protruding member 930 are provided so as to be fitted into the second pad lower portion 820, and a second plate 900 that is fitted into the second pad lower portion 820 to form gap spaces (A, B) is included.

10. The upper portion of the second pad lower portion 820 is coupled to the bottom portion 910 of the second plate 900, and a first housing 821a that forms a first protruding member insertion port 822a into which the first protruding member 920 is fitted. The upper portion is coupled to the bottom portion 910 of the second plate 900, and a second housing 821b that forms a second protruding member insertion port 822b into which the second protruding member 930 is fitted. A first air flow port 823a that allows air in the gap space (A) between the first housing 821a and the bottom portion 910 to flow, and a second air flow port 823b that allows air in the gap space (B) between the second housing 821b and the bottom portion 910 to flow, are a plurality of air flow ports 823 formed on each lower surface of the first housing 821a and the second housing 821b. A plurality of partition portions 82 for partitioning the gap space (A) of the first housing 821a into a plurality. When the air in the gap space (A) flows to the outside through the first air flow port 823a and the volume of the gap space (A) decreases, a plurality of first seating portions 824 provided in each of the gap spaces (A) partitioned into a plurality by the partition portion 826 so as to contact the bottom portion 910. When the air in the gap space (B) flows out to the outside through the second air flow port 823b and the volume of the gap space (B) decreases, the piston cover of the cardiopulmonary resuscitation device according to claim 9, further comprising a second seating portion 825 provided in the gap space (B) so as to contact the bottom portion 910.

11. The piston cover of the cardiopulmonary resuscitation device according to claim 10, wherein side walls forming the first protruding member insertion port 822a and the second protruding member insertion port 822b protrude upward so that the gap spaces (A, B) are generated between the first housing 821a and the second housing 821b and the bottom portion 910 in the fitting structure of the second pad 800 and the second plate 900.

12. When the volumes of the gap spaces (A, B) decrease, negative pressure is generated in the gap spaces (A, B) so that the first housing 821a and the second housing 821b contact the bottom portion 910 and the first seating portion 824 and the second seating portion 825. After negative pressure is generated in the gap spaces (A, B) and the piston 310 contracts, the piston cover of the cardiopulmonary resuscitation device according to claim 11, characterized in that the chest of the patient is pulled on the lower surface and moved upward.

13. The lower portion 820 of the second pad is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene - polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone. In the case of the biocompatible silicone, it has a Shore A hardness of 10 to 30, and at least one of ethylene vinyl acetate, polyethylene, polyethylene - polypropylene blend, polystyrene, neoprene, chloroprene, and polyurethane has an Asker C hardness of 10 to 20. The piston cover of the cardiopulmonary resuscitation device according to claim 9 is characterized by this.

14. The piston cover of the cardiopulmonary resuscitation device according to claim 13, wherein the lower surface of the lower portion 820 of the second pad that presses the chest compression point of the patient is made of the biocompatible silicone.

15. The piston cover of the cardiopulmonary resuscitation device according to claim 9, wherein the second pad 800 is made of at least one of polyurethane, polypropylene, and biocompatible silicone.

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