CPR device piston cap

Abstract

A cap fitted to a piston 310 for compressing a patient's chest, which is provided in a cardiopulmonary resuscitation device according to one embodiment of the present invention, the cap has a pair of grooves 724a, 724b formed between a first piston fitting portion 711a and a second piston fitting portion 711b forming a piston fitting opening 7110, and between a third piston fitting portion 711c and a fourth piston fitting portion 711d, and when the piston 310 is fitted into the piston fitting opening 7110, the pair of grooves 724a, 724b are provided with a piston fitting portion 711 into which a fastening member formed on a part of the outer circumferential surface of the piston 310 is drawn, and a first piston fitting portion 711b is provided on the underside of the piston fitting opening 7110. a pad 700 including a protruding member 7120, a second protruding member 7121, and a bottom 712 having a first fitting opening 7120a and a second fitting opening 7121a formed therein, and a pad main body 710 having the piston fitting portion 711 and the bottom 712 integrally formed therewith; and a first vacuum 800 including a housing 810 that is fitted to the pad 700 via the first protruding member 7120 and the first fitting opening 7120a, and that when the piston 310 is expanded, generates negative pressure and compresses the chest compression points of the patient on its lower surface, and when the piston 310 is contracted, pulls the chest of the patient on its lower surface and moves it upward by the negative pressure.

Description

[Technical Field]

[0001] The present invention relates to a piston cap for a cardiopulmonary resuscitation device, and more particularly to a piston cap for a cardiopulmonary resuscitation device that can continuously provide a cushioning effect to relieve and distribute pressure acting on a patient's chest during chest compressions. [Background technology]

[0002] Various types of cardiopulmonary resuscitation (CPR) devices are known in the prior art. One such device is powered by compressed air or breathing gas (Lucas™, Jolife AB, Lund, Sweden). A unique advantage of such CPR devices is their light weight and portability. Another advantage is the elastic nature of compressed air, which allows gas-powered CPR devices to cause less trauma to the patient's chest than devices with rigid compression means. Known devices can be used as first aid equipment in life-saving situations. Furthermore, known devices can be supplied with driving gas from a hospital air supply line, which is suitable for uninterrupted CPR shocks when the patient is admitted to hospital.

[0003] However, even if the elastic properties of compressed air are utilized, the compression means itself is hard, so when compressing the patient's chest, strong pressure is applied to the patient's chest, which can lead to rib fractures and hemothorax during CPR. Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to provide a piston cap for a cardiopulmonary resuscitation device that can continuously provide a cushioning effect to relieve and distribute the pressure acting on the patient's chest during chest compressions, thereby improving on conventional compression means.

[0005] However, the technical problems to be achieved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the following description. [Means for solving the problem]

[0006] In order to achieve the above object, one aspect of the present invention provides a cap fitted to a piston 310 for compressing a patient's chest, which is provided in a cardiopulmonary resuscitation device, and the cap has a pair of grooves 724a, 724b formed between a first piston fitting portion 711a and a second piston fitting portion 711b forming a piston fitting opening 7110, and between a third piston fitting portion 711c and a fourth piston fitting portion 711d, and when the piston 310 is fitted into the piston fitting opening 7110, the pair of grooves 724a, 724b are provided with a piston fitting portion 711 into which a fastening member formed on a part of the outer circumferential surface of the piston 310 is drawn, and a piston fitting portion 711b is provided on the underside of the piston fitting opening 7110. The pad 700 includes a pad body 710 having a first protruding member 7120, a second protruding member 7121, and a bottom portion 712 having a first fitting opening 7120a and a second fitting opening 7121a, and the pad body 710 having the piston fitting portion 711 and the bottom portion 712 integrally formed therewith; and a first vacuum 800 including a housing 810 that is fitted to the pad 700 via the first protruding member 7120 and the first fitting opening 7120a, and that when the piston 310 is expanded, generates negative pressure and compresses the chest compression points of the patient on its lower surface, and when the piston 310 is contracted, pulls the chest of the patient on its lower surface and moves it upward by the negative pressure.

[0007] In addition, in a cap fitted to a piston 310 for compressing the chest of a patient provided in a cardiopulmonary resuscitation apparatus according to another aspect of the present invention, a pair of grooves 724a, 724b are formed between a first piston fitting portion 711a and a second piston fitting portion 711b forming a piston fitting opening 7110, and between a third piston fitting portion 711c and a fourth piston fitting portion 711d, and the piston 310 is fitted to the piston fitting portion 711a, 711b. a pad 700 including: a piston fitting portion 711 into which a fastening member formed on a part of the outer circumferential surface of the piston 310 is drawn when fitted into the opening 7110, the pair of grooves 724a, 724b; a bottom portion 712 having a first protruding member 7120, a second protruding member 7121, a first fitting opening 7120a, and a second fitting opening 7121a formed on the lower surface; and a pad main body 710 in which the piston fitting portion 711 and the bottom portion 712 are integrally formed; and a second vacuum 900 having a housing 910 that is fitted to the pad 700 via the first protruding member 7120, the second protruding member 7121, and the first fitting port 7120a and the second fitting port 7121a, and that when the piston 310 is expanded, negative pressure is generated and the lower surface presses the chest compression points of the patient, and when the piston 310 is contracted, the negative pressure pulls the chest of the patient on the lower surface and moves it upward. [Effects of the Invention]

[0008] The cap of the present invention continuously provides a cushioning effect to the patient that relieves and distributes the pressure acting on the patient's chest during chest compressions, thereby preventing rib fractures and hemothorax from occurring during chest compressions.

[0009] However, the effects obtained by the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a cardiopulmonary resuscitation apparatus according to one embodiment of the present invention. [Figure 2] FIG. 2 is a schematic diagram of the cardiopulmonary resuscitation device in FIG. [Figure 3] FIG. 3 is a perspective view of a pad that constitutes a cap according to one embodiment of the present invention. [Figure 4] FIG. 4 is a front view of a pad constituting a cap according to one embodiment of the present invention. [Figure 5] FIG. 5 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 6 is a perspective view of a vacuum constituting a cap according to one embodiment of the present invention. [Figure 7] FIG. 7 is a plan view of a vacuum constituting a cap according to one embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view taken along the line BB in FIG. [Figure 9] FIG. 9 is a cross-sectional view of a cap according to one embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view of a vacuum according to another embodiment of the present invention. [Figure 11] FIG. 11 is a plan view of a vacuum according to another embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view taken along the line BB in FIG. [Figure 13] FIG. 13 is a cross-sectional view of a cap according to another embodiment of the present invention. 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 skilled in the art to which the present invention pertains can easily implement the present invention. However, since the description of the present invention is merely an embodiment for the purpose of structural and functional description, the scope of the present invention should not be interpreted as being limited by the embodiments described herein. In other words, since the embodiments may be variously modified and may have various forms, the scope of the present invention should be understood to include equivalents that can realize the technical idea. Furthermore, the objectives or effects presented in the present invention do not mean that a particular embodiment should include all of these or only these effects, and the scope of the present invention should not be understood 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 should not be used to limit the scope of rights. For example, a first component can be called a second component, and similarly, a second component can be called a first component. A component being "connected" to another component should be understood to mean that it can be directly connected to the other component, but that there may be other components between them. Conversely, a component being "directly connected" to another component should be understood to mean that there are no other components between them. Meanwhile, other expressions describing the relationship between components, such as "between" and "immediately between," or "adjacent to" and "directly adjacent to," should be interpreted similarly.

[0014] The singular includes the plural unless the context clearly dictates otherwise. Furthermore, it should be understood that terms such as "comprise" or "have" are intended to specify the presence of stated features, numbers, steps, operations, components, parts, or combinations thereof, but do not exclude the possible presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0015] Unless otherwise defined, all terms used herein have the same meaning as commonly 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 meanings consistent with the context of the relevant art, and cannot be interpreted as having ideal or overly formal meanings unless explicitly defined in this invention.

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

[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 shaped to support the back of a patient who needs cardiopulmonary resuscitation, and is provided with 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] The support plate 100 has an internal space formed at its side into which a frame 115 provided on a sliding guide 110 can be retracted in order to adjust the height of the piston 310 .

[0020] The sliding guides 110 are provided on both edges of the support plate 100 and are slidably coupled to one end and the other end of the support table 200, allowing the support table 200 to slide forward or backward.

[0021] 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 is retracted into or pulled out from the inside of 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.

[0022] The height of the piston 310 can be adjusted to prevent situations where the piston 310 cannot compress the chest compression points of a particular patient, since each patient has a different body shape.

[0023] The stopper 120 is provided on the sliding guide 110 and has a shape that can be fastened to one end and the other end of the support base 200, and by fastening to one end and the other end of the support base 200, the positions of the support base 200 and the hood 300 are fixed.

[0024] The support base 200 is coupled to a sliding guide 110 so that the lower end of the piston 310 moves to a position where it compresses the chest of the patient, and in one embodiment of the present invention, the shape for supporting the hood 300 is arch-shaped, but is not limited to this.

[0025] The support base 200 has one end and the other end movably connected to a pair of sliding guides 110, so that it can 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 pulling out the frame 115.

[0026] The forward and backward sliding of the support base 200 and the adjustment of the distance between both ends are preferably performed before the piston 310 compresses the patient's chest, and when the piston 310 moves to a position for compressing and relaxing the patient's chest, one end of the support base 200 is fastened by a pair of stoppers 120.

[0027] The support base 200 has a shape such that one end and the other end can be attached and detached from a pair of sliding guides 110, and is detachable from the pair of sliding guides 110. By attaching and detaching, the support base 200 can be detached from the support plate 100 together with the hood 300 and used as a separate device.

[0028] 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 has a piston 310 for compressing the chest of the patient and a control unit 320 for contracting or expanding the piston 310.

[0029] The hood 300 may have the control unit 320 exposed to the outside or installed inside.

[0030] The piston 310 is separated from the patient's chest before compressing the patient's chest, and is operated by the control unit 320 to repeat the process of compressing the patient's chest, then separating, and relaxing the patient's chest.

[0031] The piston 310 can be operated based on a continuous compression mode in which compression points on the patient's chest are continuously compressed, or a 30:2 compression mode in which two artificial respirations are performed after 30 chest compressions, thereby providing chest compression-based first aid to the patient.

[0032] The control unit 320 can control the operation of the CPR device as well as the operation of the piston 310, and can be provided with a number of buttons for this purpose.

[0033] Although not shown, the plurality of buttons may include, as specific examples, a power button for turning the power of the cardiopulmonary resuscitation device on / off, a stop button for stopping the operation of the piston 310, a compression mode setting button for determining 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, 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 cardiopulmonary resuscitation device is turned on, the control unit 320 initializes the settings and performs a self-test to determine whether the device is operating normally. If the cardiopulmonary resuscitation device is on, when an input signal is input to the power button again, the control unit 320 initializes the settings and turns off the power of the cardiopulmonary resuscitation device.

[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 repeatedly compress and relax the patient's chest. 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 to perform two artificial respirations after compressing the patient's chest 30 times.

[0036] 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; and can further control the operation of the piston 310 so that, when an input signal is input to the compression depth setting button in an initialization state, the patient's chest is compressed to 5 cm, when a subsequent signal is input, the patient's chest is compressed to 5.5 cm, when another signal is input, the patient's chest is compressed to 4 cm, and when a further signal is input, the patient's chest is compressed to 4.5 cm.

[0037] The control unit 320 can control the operation of the piston 310 so that when an input signal is input to the compression speed setting button, the patient's chest is compressed at least one of 100 times, 110 times, and 120 times; and further, can control the operation of the piston 310 so that when an input signal is input to the compression speed setting button in an initialized state, the patient's chest is compressed 110 times; when another signal is input, the patient's chest is compressed 120 times; and when a further signal is input, the patient's chest is compressed 100 times.

[0038] Such a cardiopulmonary resuscitation device may be provided with a cap that is attached 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 providing a continuous cushioning effect of alleviating and distributing pressure acting on the patient's chest.

[0039] As shown in FIGS. 3 to 9, the cap according to one embodiment of the present invention includes a pad 700 into which the lower end of the piston 310 is fitted, and a first vacuum 800 that is fitted into the pad 700 and directly compresses the chest of a patient by the movement of the piston 310.

[0040] FIG. 3 is an oblique view of a pad constituting a cap according to one embodiment of the present invention, FIG. 4 is a front view of a pad constituting a cap according to one embodiment of the present invention, FIG. 5 is a cross-sectional view taken along line AA in FIG. 3, FIG. 6 is an oblique view of a vacuum constituting a cap according to one embodiment of the present invention, FIG. 7 is a plan view of a vacuum constituting a cap according to one embodiment of the present invention, FIG. 8 is a cross-sectional view taken along line BB in FIG. 7, and FIG. 9 is a cross-sectional view of a cap according to one embodiment of the present invention.

[0041] As shown in Figures 3 to 5, the pad 700 is formed by a pad body 710 so that the lower end of the piston 310 is fitted therein, and the pad body 710 may have a piston fitting portion 711 and a bottom portion 712 integrally formed therewith.

[0042] The pad body 710 forms a piston fitting opening 7110 by a piston fitting portion 711 integrally formed in a bent shape from the bottom 712, and the piston 310 can be fastened to the pad body 710 when the lower end of the piston 310 contacts the bottom 712 and a fastening member (not shown) formed on a part of the outer circumferential surface is pulled into the piston fitting opening 7110.

[0043] The piston fitting portion 711 forms a piston fitting opening 7110 , and the lower end of the piston 310 is fitted into the pad body 710 through the piston fitting opening 7110 .

[0044] In addition, the piston fitting portion 711 is a portion that is bent and formed from the pad main body 710 to form a piston fitting opening 7110 into which the piston 310 can be retracted, and includes a first piston fitting portion 711a, a second piston fitting portion 711b, a third piston fitting portion 711c, and a fourth piston fitting portion 711d.

[0045] In addition, a pair of grooves 724a, 724b are formed in the piston fitting portion 711 between the first piston fitting portion 711a and the second piston fitting portion 711b and between the third piston fitting portion 711c and the fourth piston fitting portion 711d, and when the piston 310 is fitted into the piston fitting port 7110, a fastening member formed on a part of the outer peripheral surface of the piston 310 is pulled into the pair of grooves 724a, 724b.

[0046] That is, the piston 310 can be fastened to the pad 700 by contacting the bottom 712 with the lower end thereof and drawing the fastening member into the pair of grooves 724a and 724b.

[0047] In addition, during the process of coupling and uncoupling the fastening member of the piston 310 with the pair of grooves 724a, 724b, the lower part of the piston fitting portion 711 expands (or flows) outward from the pad body 710 so that the fastening member of the piston 310 is retracted or pulled out of the pair of grooves 724a, 724b. Therefore, an expansion space 7101 can be formed in the gap space with the pad body 710.

[0048] The bottom 712 is the lower surface of the pad body 710, and when the piston 310 is fitted into the piston fitting hole 7110, the upper surface comes into contact with the lower end of the piston 310, and the lower surface may be formed with a protrusion member and a fitting hole to implement fitting with the first vacuum 800.

[0049] As a specific example, the underside of the bottom 712 is provided with a first protruding member 7120, a first fitting opening 7120a into which the first protruding member 7120 is provided, a second protruding member 7121 positioned adjacent to the center of the bottom 712 rather than the first protruding member 7120, and a second fitting opening 7121a into which the second protruding member 7121 is provided.

[0050] The first protruding member 7120 can protrude in a circular shape from the lower surface of the bottom portion 712 so as to be fitted into a protruding member insertion opening 811 or a first protruding member insertion opening 911a, which will be described later.

[0051] The second protruding member 7121 can protrude in a circular shape from the lower surface of the bottom portion 712 so as to be fitted into a second protruding member insertion opening 911b, which will be described later.

[0052] The first fitting opening 7120a may be formed in a circular shape so that the top of the outer housing 810a and the top of the inner housing 810b, which will be described later, can be fitted into it, or so that it can be fitted into the top of the first housing 910a.

[0053] The second fitting opening 7121a may be formed in a circular shape so as to be fitted with the upper part of the second housing 910b, which will be described later.

[0054] Furthermore, the bottom portion 712 comes into contact with the lower end of the piston 310, thereby preventing the lower end of the piston 310 from coming into direct contact with the chest of the patient.

[0055] The pad 700 may be made of at least one of polyurethane, polypropylene, and biocompatible silicone, which are high-hardness materials, so that the contraction and expansion of the piston 310 and the force acting thereon can be transmitted to the cap regardless of various external forces applied from the outside.

[0056] Furthermore, the pad 700 has a Shore A hardness of 40 to 60 if made of biocompatible silicone, and an Asker C hardness of 25 to 30 if made of other materials. In one embodiment of the present invention, the Asker C hardness can be measured using an Asker hardness tester, which measures the hardness based on the depth to which the indenter of a predetermined shape is pressed into the surface of a sample using a spring force to deform the surface and measure the hardness when the resistance of the sample and the spring force are balanced. Shore hardness can be measured by measuring the height of the bounce when a dropping object with a small diamond attached to its end is dropped from a certain height.

[0057] As shown in Figures 6 to 8, after engaging with the pad 700, when the piston 310 is expanded toward the patient's chest, the first vacuum 800 can directly contact the patient's chest compression points and compress the patient's chest.

[0058] The first vacuum 800 is formed of a housing 810 having a plurality of air flow ports 812 and a seat 813 .

[0059] The housing 810 is composed of an outer housing 810a and an inner housing 810b which are integrally formed, and the lower surface of the housing 810 comes into contact with the chest of the patient.

[0060] In addition, the housing 810 has a protruding member insertion opening 811 formed at the boundary between the outer housing 810a and the inner housing 810b, into which the first protruding member 7120 provided on the pad 700 can be fitted.

[0061] The protruding member insertion opening 811 is circular and formed at the boundary between the outer housing 810a and the inner housing 810b so that the first protruding member 7120 can be fitted therein.

[0062] The outer housing 810a and the inner housing 810b may be bellows-shaped so that the volume of the gap space (A) can be changed.

[0063] Furthermore, the upper portions of the outer housing 810a and the inner housing 810b are fitted into the first fitting opening 7120a of the pad 700, and the upper portions of the outer housing 810a and the inner housing 810b may be provided with (or coated with) an adhesive means (e.g., adhesive) to maintain the fitting structure between the pad 700 and the first vacuum 800. However, the adhesive means is not limited to being provided on the upper portions of the outer housing 810a and the inner housing 810b, and may also be provided on the first protruding member 7120 or the first fitting opening 7120a.

[0064] In addition, the outer housing 810a and the inner housing 810b have side walls that form the protruding member insertion opening 811 that protrude upward, thereby creating a gap space (A) between the inner housing 810b and the bottom 712 in the fitting structure of the pad 700 and the first vacuum 800.

[0065] The inner housing 810b has a plurality of air flow holes 812 formed on the lower surface thereof so that when pressure is transmitted from the patient's chest to the lower surface during chest compression, a volume change occurs due to air flow in the gap space (A).

[0066] The gap space (A) between the top and bottom 712 of the inner housing 810b decreases in volume when air flows out along the air flow port 812 due to the piston 310 expanding during the chest compression process of the patient. Conversely, after the chest compression of the patient is completed, when the piston 310 is separated from the patient's chest, the volume can increase due to the air flowing in through the air flow port 812.

[0067] When the lower surface of the inner housing 810b comes into contact with the patient's chest during chest compression, and as the piston 310 expands, air flows out from the gap space (A) to the outside, reducing the volume of the gap space (A). When the seat 813 provided in the gap space (A) comes into contact with the bottom 712, negative pressure is generated in the gap space (A). After negative pressure is generated in the gap space (A), when the piston 310 contracts, the lower surface that comes into contact with the chest compression point of the patient can move upward, pulling the patient's chest.

[0068] The first vacuum 800 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 properties of these materials, it can be embodied as a foam that conforms to the shape of the patient's chest.

[0069] Furthermore, in the first vacuum 800, the biocompatible silicone may have a Shore A hardness of 10 to 30, and the other materials may have an Asker C hardness of 10 to 20.

[0070] Meanwhile, when compressing the patient's chest, the housing 810 needs to conform to the patient's chest. For this reason, the underside of the inner housing 810b that comes into contact with the compression points on the patient's chest is preferably made of biocompatible silicone, which is easily conformable to the patient's chest, among applicable materials. This continuously provides a buffering effect that relieves and distributes the pressure acting on the patient's chest, thereby preventing rib fractures and hemothorax from occurring during the compression of the patient's chest.

[0071] As shown in FIG. 9, a cap according to one embodiment of the present invention is realized when the first protruding member 7120 of the pad 700 is inserted into the protruding member insertion port 811 of the first vacuum 800, and can be included in the cardiopulmonary resuscitation device of the present invention to compress the patient's chest.

[0072] The cap of the present invention is not limited to being realized by fitting the pad 700 and the first vacuum 800, but can also be realized by fitting a second vacuum 900, which is a modified version of the first vacuum 800, to the pad 700.

[0073] Hereinafter, a cap according to another embodiment of the present invention, which is realized by fitting a pad 700 and a second vacuum 900, will be described in detail.

[0074] FIG. 10 is a perspective view of a vacuum according to another embodiment of the present invention, FIG. 11 is a plan view of a vacuum according to another embodiment of the present invention, FIG. 12 is a cross-sectional view taken along line B-B of FIG. 11, and FIG. 13 is a cross-sectional view of a cap according to another embodiment of the present invention.

[0075] As shown in Figures 10 to 12, the second vacuum 900 has an outer shape formed by a housing 910, which is divided into an integrally formed first housing 910a and a second housing 910b, and includes a plurality of air flow ports 912, a first seating portion 913, a second seating portion 914, and a partition portion 915.

[0076] The first housing 910a includes a first protruding member insertion opening 911a into which the first protruding member 7120 is fitted, thereby realizing the fitting of the pad 700 and the second vacuum 900.

[0077] In the first housing 910a, the gap space (A) where negative pressure is generated is divided into multiple sections by the multiple sections 915. Therefore, when pressure is transmitted from the patient's chest and the volume of the gap space (A) decreases, not only can all of the multiple lower surfaces move toward the bottom 712, but also only a portion of the multiple lower surfaces that is in contact with the patient's chest compression point and receives pressure of a certain strength or more from the patient's chest can move toward the bottom 712.

[0078] The first protruding member insertion opening 911a is preferably circular and formed on the first housing 910a so that the first protruding member 7120 can be fitted therein.

[0079] Due to the structure of the housing 910, the second housing 910b is connected to the first housing 910a by a plurality of partitions 915, and includes a second protrusion member insertion port 911b into which the second protrusion member 7121 is fitted, thereby realizing the fitting of the pad 700 and the second vacuum 900 together with the first housing 910a.

[0080] The second protruding member insertion opening 911b is preferably circular and formed on the second housing 910b so that the second protruding member 7121 can be fitted therein.

[0081] The first housing 910a and the second housing 910b may have side walls that protrude upward so that gap spaces (A, B) are created between the bottom 712 and the pad 700 due to the fitting structure of the pad 700 and the second vacuum 900.

[0082] In addition, the first housing 910a and the second housing 910b may be embodied in a bellows shape so that the volume of the gap spaces A and B can be changed.

[0083] The tops of the first housing 910a and the second housing 910b are fitted into the first fitting opening 7120a and the second fitting opening 7121a, and the tops of the first housing 910a and the second housing 910b may be provided with (or coated with) an adhesive means (e.g., adhesive) to maintain the fitted structure of the pad 700 and the second vacuum 900. However, the adhesive means is not limited to being provided on the tops of the first housing 910a and the second housing 910b, and may be provided on at least one of the first protruding member 7120 and the first fitting opening 7120a, and at least one of the second protruding member 7121 and the second fitting opening 7121a, respectively.

[0084] The plurality of air flow ports 912 are formed on the undersides of the first housing 910a and the second housing 910b, respectively, and include a plurality of first air flow ports 912a formed on the underside of the first housing 910a and a plurality of second air flow ports 912b formed on the underside of the second housing 910b.

[0085] The first and second air flow ports 912a, 912b allow air in the gap space (A) between the bottom 712 and the first housing 910a and the gap space (B) between the bottom 712 and the second housing 910b to flow outward, respectively, during the process of the patient's chest being compressed by the expansion of the piston 310, thereby reducing the volume of the gap spaces (A, B).

[0086] The first seating portion 913 is provided in plurality so as to be provided in each gap space (A) of the first housing 910a which is divided into a plurality of spaces by a plurality of partitions 915, and when the air in the gap space (A) flows out through a plurality of first air flow ports 912a and the volume of the gap space (A) decreases, the first seating portion 913 comes into contact with the bottom 712 and causes the gap space (A) to be in a negative pressure state.

[0087] As a specific example, the first mounting portion 913 surrounds the center of the underside of the bottom 712, and when the peripheral portion of the underside of the bottom 712, which is vertically parallel to the first mounting portion 913, moves downward due to downward pressure applied from the fastening member provided on the piston 310 as the piston 310 expands, it comes into contact with the peripheral portion of the underside of the bottom 712, and as a result, the partitioned gap space (A) can become negative pressure.

[0088] The second seating part 914 is installed in the gap space (B) of the second housing 910b, and when the air in the gap space (B) defined by the plurality of second air flow ports 912b flows outward and the volume of the gap space (B) decreases, the second seating part 914 comes into contact with the bottom part 712, causing the gap space (B) to be in a negative pressure state.

[0089] For example, when the center of the underside of the bottom 712, which is vertically parallel to the second mounting portion 914, moves downward due to downward pressure applied by the expansion of the piston 310, the second mounting portion 914 comes into contact with the center of the underside of the bottom 712, and thus the gap space (B) may become negative pressure.

[0090] It is preferable that a plurality of partitions 915 are provided to divide the gap space (A) of the first housing 910a into a plurality of sections, and each partition 915 is provided in a form that connects the first housing 910a and the second housing 910b.

[0091] The second vacuum 900 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 properties of these materials, can be embodied as a foam that conforms to the shape of the patient's chest.

[0092] In addition, the biocompatible silicone of the second vacuum 900 may have a Shore A hardness of 10 to 30, and the other materials may have an Asker C hardness of 10 to 20.

[0093] Meanwhile, when compressing the patient's chest, the housing 910 needs to conform to the patient's chest. For this reason, the lower surfaces of the first and second housings 910a and 910b, which come into contact with the compression points of the patient's chest, are preferably made of biocompatible silicone, which is easily conformable to the patient's chest, among applicable materials. This continuously provides a buffering effect that relieves and distributes the pressure acting on the patient's chest, thereby preventing rib fractures and hemothorax from occurring during the compression of the patient's chest.

[0094] As shown in FIG. 13, a cap according to another embodiment of the present invention is realized when the first protruding member 7120 and the second protruding member 7121 of the pad 700 are fitted into the first protruding member insertion opening 911a and the second protruding member insertion opening 911b of the second vacuum 900, and the upper portions of the first and second housings 910a and 910b are fitted into the first fitting opening 7120a and the second fitting opening 7121a, and can be included in the cardiopulmonary resuscitation device of the present invention and used in the process of compressing the patient's chest.

[0095] Compared to the cap of the first embodiment, the cap according to another embodiment of the present invention has the advantage that the engagement between the pad 700 and the second vacuum 900 is realized by a relatively large number of protruding members 7120, 7121, thereby reinforcing the engagement structure between the pad and the vacuum.

[0096] As described above, the detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to embody and practice the present invention. Although the present invention has been described above with reference to the preferred embodiments, those skilled in the art will understand that various modifications and variations of the present invention can be made without departing from the scope of the present invention. For example, those skilled in the art may utilize the various configurations described in the above embodiments in combination with each other. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0097] The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Therefore, the above detailed description should not be interpreted as restrictive in all respects, but should be considered as illustrative. The scope of the present invention is determined by a reasonable analysis of the appended claims, and all modifications within the scope of the equivalents of the present invention are included within the scope of the present invention. The present invention is not intended to be limited to the embodiments disclosed herein, but to be accorded the widest scope consistent with the principles and novel features disclosed herein. Furthermore, claims that are not explicitly cited in the claims may be combined to form embodiments, or new claims may be included by amendment after filing. Industrial Applicability

[0098] The piston cap of the cardiopulmonary resuscitation device of the present invention continuously provides a cushioning effect to the patient that relieves and distributes the pressure acting on the patient's chest during chest compressions, thereby preventing rib fractures and hemothorax during chest compressions, and is therefore industrially applicable.

Claims

1. A cap fitted to a piston 310 for compressing the chest of a patient, The cap is a pad 700 including: a piston fitting portion 711, in which a pair of grooves 724a, 724b are formed between a first piston fitting portion 711a and a second piston fitting portion 711b that form a piston fitting opening 7110, and between a third piston fitting portion 711c and a fourth piston fitting portion 711d, and when the piston 310 is fitted into the piston fitting opening 7110, a fastening member formed on a part of the outer circumferential surface of the piston 310 is drawn into the pair of grooves 724a, 724b; a bottom portion 712, in which a first protruding member 7120 and a first fitting opening 7120a are formed on a lower surface; and a pad main body 710 in which the piston fitting portion 711 and the bottom portion 712 are integrally formed; and a first vacuum (800) having a housing (810) that is fitted to the pad (700) via the first protruding member (7120) and the first fitting port (7120a), and that compresses the chest compression points of the patient on its lower surface while generating negative pressure when the piston (310) is expanded, and that pulls the chest of the patient on its lower surface and moves it upward by the negative pressure when the piston (310) is contracted.

2. The housing 810 includes: an outer housing 810a and an inner housing 810b integrally formed with each other, the upper portion of which is inserted into the first fitting opening 7120a; a plurality of air flow holes 812 formed on the bottom surface of the inner housing 810b to allow air to flow in the gap space (A) between the inner housing 810b and the bottom 712; 2. The piston cap of claim 1, further comprising: a seating portion 813 provided in the gap space (A) so as to contact the bottom portion 712 when the volume of the gap space (A) decreases due to air flowing out through the air flow port 812.

3. The piston cap of the cardiopulmonary resuscitation device of claim 2, wherein the housing 810 has a protrusion member insertion port 811 formed at the boundary between the outer housing 810a and the inner housing 810b, into which the first protrusion member 7120 can be fitted.

4. The bottom portion 712 includes the first protruding member 7120 inserted into the protruding member insertion opening 811, and A piston cap for a cardiopulmonary resuscitation device as described in claim 3, characterized in that the first protruding member 7120 is provided internally and includes the first fitting port 7120a that fits into the upper part of the outer housing 810a and the upper part of the inner housing 810b.

5. The outer housing 810a and the inner housing 810b are The piston cap of the cardiopulmonary resuscitation device according to claim 3, characterized in that the side wall forming the protruding member insertion port 811 protrudes upward so that the gap space (A) is generated between the bottom 712 on the mating structure of the pad 700 and the first vacuum 800.

6. The inner housing 810b is 6. The piston cap of claim 5, wherein when the volume of the gap space (A) decreases so that the bottom portion (712) and the seat portion (813) provided in the gap space (A) come into contact with each other, a negative pressure is generated in the gap space (A), and when the piston (310) contracts after the negative pressure is generated in the gap space (A), the piston cap moves upward, pulling the patient's chest against its lower surface.

7. the first vacuum 800 is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone; 2. The piston cap of claim 1, wherein the biocompatible silicone 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.

8. 8. The piston cap of claim 7, wherein the first vacuum 800 has a lower surface made of biocompatible silicone that presses against the chest compression points of the patient.

9. The piston cap of claim 1, wherein the pad (700) is made of at least one of polyurethane, polypropylene, and biocompatible silicone.

10. A cap fitted to a piston 310 for compressing the chest of a patient, The cap is a piston fitting portion 711, in which a pair of grooves 724a, 724b are formed between a first piston fitting portion 711a and a second piston fitting portion 711b that form a piston fitting opening 7110, and between a third piston fitting portion 711c and a fourth piston fitting portion 711d, and when the piston 310 is fitted into the piston fitting opening 7110, a fastening member formed on a part of the outer circumferential surface of the piston 310 is drawn into the pair of grooves 724a, 724b; a bottom portion 712, in which a first protruding member 7120, a second protruding member 7121, a first fitting opening 7120a, and a second fitting opening 7121a are formed on the lower surface; and a pad body 710 in which the piston fitting portion 711 and the bottom portion 712 are integrally formed; and a second vacuum (900) having a housing (910) that is fitted to the pad (700) via the first protruding member (7120), the second protruding member (7121), and the first fitting port (7120a) and the second fitting port (7121a), and that compresses the chest compression points of the patient on its lower surface while generating negative pressure when the piston (310) is expanded, and that pulls the chest of the patient on its lower surface and moves it upward by the negative pressure when the piston (310) is contracted.

11. The housing 910 includes: a first housing 910a having an upper portion inserted into the first fitting opening 7120a and forming a first protruding member insertion opening 911a into which the first protruding member 7120 is fitted; a second housing 910b having an upper portion inserted into the second fitting opening 7121a and forming a second protruding member insertion opening 911b into which the second protruding member 7121 is fitted; a first air flow port 912a for allowing air to flow in the gap space (A) between the first housing 910a and the bottom 712, and a second air flow port 912b for allowing air to flow in the gap space (B) between the second housing 910b and the bottom 712; and a plurality of partitions 915 for partitioning the gap space (A) of the first housing 910a into a plurality of spaces; a plurality of first seating portions 913 provided in each of the gap spaces A partitioned by the partitioning portion 915 so as to contact the bottom portion 712 when the volume of the gap space A decreases as the air in the gap space A flows to the outside through the first air flow port 912a; The piston cap of claim 10, further comprising a second seating portion 914 provided in the gap space (B) so as to contact the bottom portion 712 when the volume of the gap space (B) decreases due to air in the gap space (B) flowing to the outside through the second air flow port 912b.

12. The bottom portion 712 is the first protruding member 7120 to be inserted into the first protruding member insertion opening 911 a; the first fitting opening 7120a, into which the first protruding member 7120 is provided and into which the upper portion of the first housing 910a is fitted; the second protruding member 7121 to be inserted into the second protruding member insertion port 911b; A piston cap for a cardiopulmonary resuscitation device as described in claim 11, characterized in that the second protruding member 7121 is provided inside and includes the second fitting opening 7121a into which the upper part of the second housing 910b is fitted.

13. The piston cap of the cardiopulmonary resuscitation device described in claim 11, characterized in that the side walls forming the first protruding member insertion opening 911a and the second protruding member insertion opening 911b of the first housing 910a and the second housing 910b protrude upward so that the gap space (A, B) is generated between the bottom 712 on the fitting structure of the pad 700 and the second vacuum 900.

14. 14. The piston cap of claim 13, wherein when the volume of the gap space (A, B) decreases so that the bottom part (712) contacts the first seat (913) and the second seat (914), negative pressure is generated in the gap space (A, B), and when the piston (310) contracts after negative pressure is generated in the gap space (A, B), the first housing (910a) and the second housing (910b) are moved upward, pulling the patient's chest on their lower surface.

15. the second vacuum 900 is made of at least one of ethylene vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, chloroprene, polyurethane, and biocompatible silicone; The piston cap of the cardiopulmonary resuscitation device according to claim 10, characterized in that the biocompatible silicone 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.

16. 16. The piston cap of claim 15, wherein the second vacuum 900 has a lower surface made of biocompatible silicone that presses against the chest compression points of the patient.

17. The piston cap of a cardiopulmonary resuscitation apparatus according to claim 10, wherein the pad (700) is made of at least one of polyurethane, polypropylene, and biocompatible silicone.

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