WO2024029647A1

WO2024029647A1 - Piston cover of cardiopulmonary resuscitation device

Info

Publication number: WO2024029647A1
Application number: PCT/KR2022/011547
Authority: WO
Inventors: 송인호; 신지혜
Original assignee: 주식회사 씨유메디칼시스템
Priority date: 2022-08-02
Filing date: 2022-08-04
Publication date: 2024-02-08
Also published as: KR102499151B1

Abstract

A cover, which is fitted into and coupled to a piston (310), is for pressing the chest region of a patient and is provided at a cardiopulmonary resuscitation device, according to one embodiment of the present invention, may comprise a first pad (600) having, integrated therein: a first pad upper part (610) composed of piston fitting parts (611), which form a piston fitting hole (6110), and have a pair of grooves (6024a, 6024b) formed between a first piston fitting part (611a) and a second piston fitting part (611b) and between a third piston fitting part (611c) and a fourth piston fitting part (611d), the pair of grooves (6024a, 6024b) into which fastening members partially formed on the outer peripheral surface of the piston (310) are inserted when the piston (310) is fitted into and coupled to the piston fitting hole (6110); and a first pad lower part (620) which presses a pressure point of the chest region of the patient through lower surface thereof while negative pressure is generated when the piston (310) is extended, and which pulls the chest region of the patient and moves same upward with the lower surface thereof through the negative pressure when the piston (310) is contracted, and a first plate (700) that has a protruding member (720) fitted into and coupled to the first pad lower part (620), and that is fitted into and coupled to the first pad lower part (620) so as to form a space (A) therebetween.

Description

Piston cover of CPR device

The present invention relates to a piston cover for a CPR device, and more specifically, to a piston cover for a CPR device that can continuously provide a buffering action to relieve and distribute the pressure acting on the patient's chest during the patient's emergency treatment process. It's about.

In the prior art, various types of devices for cardiopulmonary resuscitation (CPR) are known. One such device is driven by compressed air or breathing gas (Jolife AB; LucasTM, Lund, Sweden). A unique advantage of the above-mentioned CPR device is that it has low weight and thus can be transported. Another advantage is the elastic nature of compressed air, whereby gas-powered CPR devices cause less damage to the patient's chest than devices equipped with rigid compression means. The known device can be used as an emergency device in life-saving situations. Additionally, the known device can be supplied with drive gas from a hospital air supply line, which may be desirable for non-stop cardiopulmonary resuscitation when the patient is hospitalized.

However, even if the elastic properties of compressed air are used, the material of the compression means itself is hard, so when compressing the patient's chest, strong pressure is applied to the patient's chest, causing rib fractures and hemothorax during CPR. .

Therefore, in order to improve the conventional compression means, the purpose of the present invention is to provide a piston cover for a CPR device that can continuously provide a buffering action to relieve and distribute the pressure acting on the patient's chest during the process of compressing the patient's chest. There is.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

In the cover fitted to the piston 310 for compressing the patient's chest provided in the CPR device according to an embodiment of the present invention to achieve the above object, the cover has a piston fitting hole 6110 ) between the first piston fitting part 611a and the second piston fitting part 611b and between the third piston fitting part 611c and the fourth piston fitting part 611d forming a pair of

grooves

6024a , 6024b) is formed, and when the piston 310 is fitted into the piston fitting 6110, a fastening member formed on a portion of the outer peripheral surface of the piston 310 is inserted into the pair of

grooves

6024a and 6024b. When the first pad upper part 610 made of a piston fitting part 611 and the piston 310 are expanded, negative pressure is generated to press the patient's chest pressure point on the lower surface and the piston 310 is contracted. a first pad 600 integrally formed with a first pad lower part 620 that drags the patient's chest to the lower surface and moves it upward through the negative pressure; And a first plate 700 that is provided with a protruding member 720 to be fitted into the first pad lower part 620 and is fitted to the first pad lower part 620 to form an interspace A; It can be included.

In addition, in the cover fitted to the piston 310 for compressing the patient's chest provided in the CPR device according to another embodiment of the present invention, the cover includes the first cover forming the piston fitting hole 8110. A pair of

grooves

8024a and 8024b are formed between the 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 hole 8110, a piston fitting portion 811 into which a fastening member formed on a portion of the outer peripheral surface of the piston 310 is inserted into the pair of

grooves

8024a and 8024b. When the piston 310 expands, a negative pressure is generated and presses the patient's chest pressure point on the lower surface, and when the piston 310 is contracted, the negative pressure is generated through the second pad upper part 810. a second pad (800) integrally formed with a second pad lower part (820) that drags the patient's chest to the lower surface and moves it upward; And a first protruding member 920 and a second protruding member 930 are provided to be fitted into the second lower pad 820, and are fitted into the second lower pad 820 to form spaces between (A, B). ) may include a second plate 900 forming a.

The cover of the present invention has the effect of preventing rib fractures and hemothorax from occurring during the process of compressing the patient's chest by continuously providing the patient with a cushioning action that relieves and distributes the pressure acting on the patient's chest during the process of compressing the patient's chest. There is.

However, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the description below. You will be able to.

Figure 1 is a perspective view of a CPR device according to an embodiment of the present invention.

Figure 2 is a schematic diagram of the CPR device shown in Figure 1.

Figure 3 is a perspective view of a first pad constituting a cover according to an embodiment of the present invention.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3.

Figure 5 is a perspective view of the lower part of the first pad included in area B shown in Figure 4.

FIG. 6 is a plan view of the lower portion of the first pad included in area B shown in FIG. 4.

Figure 7 is a perspective view of a second pad constituting a cover according to another embodiment of the present invention.

Figure 8 is a cross-sectional view taken along line C-C of Figure 7.

FIG. 9 is a perspective view of the lower part of the second pad included in area D shown in FIG. 8.

FIG. 10 is a plan view of the lower portion of the second pad included in area D shown in FIG. 8.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is only an example for structural or functional explanation, the scope of the present invention should not be construed as limited by the examples described in the text. In other words, since the embodiments can be modified in various ways and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

The meaning of terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly, the second component may also be named a first component. When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is referred to as being “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly neighboring" should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to specify the existence of a combination, and should be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

FIG. 1 is a perspective view of a CPR device according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of the CPR device shown in FIG. 1.

Referring to Figures 1 and 2, the CPR device of the present invention is equipped with a support plate 100, a support 200, and a hood 300 for compressing the patient's chest.

The support plate 100 is formed in a shape to support the back of a patient requiring CPR, and includes a sliding guide 110 for sliding the support 200 and the hood 300, the support 200, and the hood 300. ) is provided with a stopper 120 to fix the position.

The support plate 100 has an internal space formed on the side into which the frame 115 provided on the sliding guide 110 can be inserted to adjust the height of the piston 310.

The sliding guide 110 is provided on both edges of the support plate 100, and one end and the other end of the support 200 are coupled to enable sliding movement, allowing the support 200 to slide forward or backward.

The sliding guide 110 is inserted into the inside of the support plate 100 or pulled out from the inside of the support plate 100, as shown in Figure 2 (b), which is an enlarged area A shown in Figure 2 (a). By providing the frame 115, the distance between both ends of the support 200 is adjusted, and the height of the piston 310 is adjusted through this.

At this time, the reason why the height of the piston 310 is adjusted is to prevent a situation from occurring in which the piston 310 cannot compress the chest of a specific patient because each patient has a different body type.

The stopper 120 is provided on the sliding guide 110 and has a form that can be coupled to one end and the other end of the support 200, so that it is coupled to one end and the other end of the support 200. The positions of the support 200 and the hood 300 are fixed through binding to the other end.

The support 200 is coupled to the sliding guide 110 to move the lower end of the piston 310 to a position that presses the patient's chest, and in one embodiment of the present invention, is configured to support the hood 300. It may be arched, but this is not limited.

As one end and the other end of the support 200 are movably coupled to a pair of sliding guides 110, the support 200 slides forward or backward with the sliding guide 110 as an axis, or moves in and out of the frame 115. The distance between both ends can be adjusted through .

It is preferable that the forward and backward sliding movement of the support 200 and the distance adjustment between both ends are performed before the piston 310 compresses the patient's chest, and the support 200 is used when the piston 310 compresses the patient's chest. And when it moves to the position for relaxation, one end and the other end are bound by a pair of stoppers 120.

The support 200 has one end and the other end detachable from a pair of sliding guides 110, and can be attached and detached from the pair of sliding guides 110. Through detachment, the support plate 100 along with the hood 300 are attached. ) can be detached from the device and used as a separate device.

The hood 300 is coupled to one side of the support 200, more specifically to the arch crown of the arch-shaped support 200, and includes a piston 310 for compressing the patient's chest, and the piston 310. ) is provided with a control unit 320 for contracting or expanding.

The control unit 320 may be exposed to the outside or installed inside the hood 300.

The piston 310 is spaced apart 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 and then being spaced apart to relax the patient's chest. can do.

The piston 310 operates in a continuous compression mode, which continuously compresses the patient's chest according to the chest compression mode set through the control unit 320, or performs 2 artificial respirations after 30 compressions of the patient's chest, thereby compressing the patient's chest and performing artificial respiration. It operates based on the compression 30:2 mode that combines breathing to provide emergency treatment based on chest compression to the patient.

The control unit 320 can control not only the operation of the piston 310 but also the operation of the CPR device, and may be provided with a plurality of buttons for this purpose.

The plurality of buttons are not shown in the drawing, but specific examples include a power button for turning on/off the power of the CPR device, a stop button for stopping the operation of the piston 310, and a piston 310. A compression mode setting button to perform chest compression (CPR) on this patient or to set the chest compression mode of the piston 310, and a compression depth setting button to set the chest compression depth of the piston 310. , It can be done with a compression speed setting button that sets the chest compression speed (number of times) of the piston 310.

When an input signal is input to the power button and the CPR device is turned on, the control unit 320 initializes the settings and performs a self test to determine whether normal operation is possible, When the CPR device is turned on and an input signal is input to the power button again, the settings are initialized and the CPR device is turned off.

If the chest compression mode set through the compression mode setting button is continuous compression mode, the control unit 320 controls the operation of the piston 310 to repeat compression and relaxation of the patient's chest. If the chest compression mode set through is compression 30:2 mode, the operation of the piston 310 can be controlled so that two artificial respirations are performed after the patient's chest is compressed 30 times.

The control unit 320 controls the operation of the piston 310 so that the patient's chest is compressed to a depth of at least one of 4 cm, 4.5 cm, 5 cm, and 5.5 cm when an input signal is input to the compression depth setting button. Furthermore, in the initialization state, when an input signal is input to the compression depth setting button, the patient's chest is 5 cm, when a signal is input thereafter, the patient's chest is 5.5 cm, and when the signal is input again, the patient's chest is 4 cm. cm, when the signal is input again, the operation of the piston 310 can be controlled so that the patient's chest is compressed by 4.5 cm.

The control unit 320 can control the operation of the piston 310 so that the patient's chest is compressed at least one of 100, 110, and 120 times when an input signal is input to the compression speed setting button. , Furthermore, in the initialization state, when an input signal is input to the compression speed setting button, the patient's chest is compressed 110 times, when a signal is input again, the patient's chest is compressed 120 times, and when a signal is input again, the patient's chest is compressed 100 times. The operation of the piston 310 can be controlled.

This CPR device is mounted on the lower part of the piston 310 and is made of a hard material with a different hardness than the piston 310 to continuously provide a cushioning action to relieve and distribute the pressure acting on the patient's chest. A cover may be provided.

As shown in FIGS. 3 to 6, the cover according to an embodiment of the present invention has a first pad 600 and a space A between which the lower end of the piston 310 is fitted and directly presses the patient's chest. It may be formed of a first plate 700 that is fitted into the first pad 600 and disposed inside the first pad 600.

Figure 3 is a perspective view of the first pad constituting the cover according to an embodiment of the present invention, Figure 4 is a cross-sectional view A-A of Figure 3, and Figure 5 is a lower part of the first pad included in area B shown in Figure 4. It is a perspective view, and FIG. 6 is a plan view of the lower part of the first pad included in area B shown in FIG. 4.

Referring to FIGS. 3 to 6, the first pad 600 includes an upper portion of the first pad 610 into which the lower end of the piston 310 is fitted, and a lower portion of the first pad for compressing the patient's chest with its lower surface. It has an external shape of 620, and a piston fitting portion 611 may be formed in the upper part of the first pad 610.

The first pad upper part 610 forms a piston fitting hole 6110 by a piston fitting part 611 integrally formed in a bent form from the first pad lower part 620, and the piston 310 is After the lower end is in contact with the first plate 700, the fastening member (not shown) formed on a part of the outer peripheral surface through rotation of the cover is fastened to the upper part of the first pad 610 when it is inserted into the piston fitting hole 6110. It can be.

The piston fitting portion 611 forms a piston fitting hole 6110, and the lower end of the piston 310 can be fitted into the upper part of the first pad 610 through the piston fitting hole 6110. .

And the piston fitting portion 611 is a part provided in a bent state from the first pad upper part 610 to form a piston fitting hole 6110 into which the piston 310 can be inserted, and is a first piston fitting portion 611a. , a second piston fitting part 611b, a third piston fitting part 611c, and a fourth piston fitting part 611d may be included.

In addition, the piston fitting part 611 is located between the first piston fitting part 611a and the second piston fitting part 611b, and between the third piston fitting part 611c and the fourth piston fitting part 611d. A pair of

grooves

6024a and 6024b are formed in the pair of

grooves

6024a and 6024b, and when the piston 310 is fitted into the piston fitting 6110, the outer peripheral surface of the piston 310 A fastening member formed in part may be inserted.

That is, the piston 310 may be fastened to the first pad 600 through the lower end contacting the first plate 700 and the fastening member entering the pair of

grooves

6024a and 6024b.

And the piston fitting portion 611 is such that during the process of engaging and disengaging the fastening member of the piston 310 and the pair of

grooves

6024a and 6024b, the fastening member of the piston 310 is connected to the pair of

grooves

6024a and 6024b. The lower part may expand (or flow) to the outside of the first pad upper part 610 to be drawn in or out from 6024b), and for this purpose, an expansion space 6101 is formed in the space between the first pad upper part 610. It can be.

The upper part of the first pad 610 is made of polyurethane, a material with strong hardness so that the contraction and expansion of the piston 310 and the force thereon can be transmitted to the cap regardless of various external forces that may be applied from the outside. It may be made of at least one of polypropylene and biocompatible silicone.

In addition, the first pad upper part 610 may have a hardness of 40 to 60 Shore A in the case of biocompatible silicone, and a hardness of 25 to 30 Asker C in the case of other materials, an embodiment of the present invention. In Asker C, hardness is measured based on the depth of insertion of the indenter into the sample in a state where the resistance of the sample and the force of the spring are balanced by inserting a predetermined type of indenter into the surface of the sample with the force of a spring and deforming it. It can be measured using a hardness meter, and shore hardness measures the height to which a falling object with a small diamond fixed to the end rises when dropped from a certain height.

The first lower pad 620 is a portion of area B in FIG. 4 and is formed integrally with the upper first pad 610, and is directly connected to the patient's chest pressure point when the piston 310 expands toward the patient's chest. By touching, the patient's chest can be compressed.

The first pad lower part 620 has an outer shape of a housing 621, and the housing 621 may include a plurality of air flow ports 623 and a seating portion 624.

In addition, the housing 621 consists of an outer housing 621a and an inner housing 621b that are integrally formed, and the lower surface is in contact with the patient's chest.

In addition, the housing 621 is formed at the boundary between the outer housing 621a and the inner housing 621b with a protruding member insertion hole 622 through which the protruding member 720 provided on the first plate 700 can be fitted.

The protruding member insertion hole 622 may be formed in a circular shape at the boundary between the outer housing 621a and the inner housing 621b to enable fitting of the protruding member 720.

The outer housing 621a and the inner housing 621b may be implemented in a bellows shape so that the volume of the space A between them can be changed.

In addition, the upper portions of the outer housing 621a and the inner housing 621b are coupled to the bottom portion 710 of the first plate 700, and the upper portions of the outer housing 621a and the inner housing 621b are connected to the bottom portion 710 of the first plate 700. An adhesive means (eg, adhesive) may be provided (or applied) to maintain the fitting structure of the pad 600 and the first plate 700. However, the adhesive means is not limited to being provided on the top of the outer housing 621a and the inner housing 621b, and may be provided on the bottom portion 710.

In addition, the side walls of the outer housing 621a and the inner housing 621b, which form the protruding member insertion hole 622, protrude upward, so that the inner housing 621a and the inner housing 621b have a fitting structure between the first pad 600 and the first plate 700. A space A is created between the housing 621b and the first plate 700.

The inner housing 621b has a plurality of air flow ports 623 on the lower surface such that when pressure is transmitted from the patient's chest to the lower surface during the patient's chest compression, a volume change occurs through the air flow in the space (A). ) is formed.

The space A between the upper side of the inner housing 621b and the first plate 700 is opened when air flows outward along the air flow port 623 by the piston 310 that expands during the patient's chest compression process. The volume may decrease, and on the other hand, when the patient is separated from the patient's chest after the chest compressions are completed, the volume may increase depending on the air flowing in through the air flow port 623.

The lower surface of the inner housing 621b is in contact with the patient's chest during compression of the patient's chest, and as the piston 310 expands, air flows outward from the space A to the space A. As the volume of the space decreases, when the seating portion 624 provided in the space A comes into contact with the bottom 710 of the first plate 700, negative pressure is generated in the space A, and When the piston 310 is contracted after negative pressure is generated in the space A, the lower surface in contact with the patient's chest pressure point may drag the patient's chest and move upward.

As such, the first pad lower part 620 is made of ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, It is made of at least one of chloroprene, polyurethane, and biocompatible silicone, and due to the characteristics of this material, it can be implemented as a foam that conforms to the shape of the patient's chest.

And of the first pad lower part 620, biocompatible silicone has a hardness of 10 to 30 Shore A, and other materials have a hardness of 10 to 30 Shore A. It may have a hardness of 10 to 20 Asker C.

Meanwhile, the lower part of the first pad 620 needs to conform to the patient's chest when compressing the patient's chest, and accordingly, the lower surface of the inner housing 621b, which is in contact with the patient's chest compression point, is made of an applicable material. It is preferable that it is made of biocompatible silicone, which is easy to adapt to the patient's chest. This continuously provides a cushioning effect that relieves and distributes the pressure acting on the patient's chest, preventing rib fractures and hemothorax during compression of the patient's chest. This can be prevented from occurring.

When the first plate 700 is fitted into the first pad lower part 620, the bottom part 710 faces the seating part 624 with a space A therebetween.

The lower surface of the bottom portion 710 may be in contact with the seating portion 624 when the volume of the space A decreases during compression of the patient's chest.

A protruding member 720 that can be fitted into the protruding member insertion hole 622 protrudes from the bottom portion 710 of the first plate 700 so as to be fitted with the first pad lower part 620.

The protruding member 720 may protrude in the shape of a circle to be fitted into the protruding member insertion hole 622.

As such, the cover of the present invention is not limited to being implemented only by fitting the first pad 600 and the first plate 700, and the second pad 800 is a modified version of the first pad 600. It may be implemented by fitting a second plate 900 that is a modified version of the first plate 700.

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

Figure 7 is a perspective view of a second pad constituting a cover according to another embodiment of the present invention, Figure 8 is a cross-sectional view C-C of Figure 7, and Figure 9 is a lower part of the second pad included in area D shown in Figure 8. It is a perspective view, and FIG. 10 is a plan view of the lower part of the second pad included in area D shown in FIG. 8.

Referring to FIGS. 7 to 10, the second pad 800 includes an upper portion of the second pad 810 into which the lower end of the piston 310 is fitted, and a lower portion of the second pad for compressing the patient's chest with its lower surface. It has an external shape of 820, and a piston fitting portion 811 may be formed in the upper part of the second pad 810.

The second pad upper part 810 forms a piston fitting hole 8110 by a piston fitting part 811 integrally formed in a bent form from the second pad lower part 820, and the piston 310 is After the lower end is in contact with the second plate 900, the fastening member (not shown) formed on a part of the outer peripheral surface through rotation of the cover is fastened to the upper part of the second pad 810 when it is inserted into the piston fitting hole 8110. It can be.

The piston fitting portion 811 forms a piston fitting hole 8110, and the lower end of the piston 310 can be fitted into the upper part of the second pad 810 through the piston fitting hole 8110. .

And the piston fitting portion 811 is a part provided in a bent state from the second pad upper part 810 to form a piston fitting hole 8110 into which the piston 310 can be inserted, and is a first piston fitting portion 811a. , a second piston fitting part 811b, a third piston fitting part 811c, and a fourth piston fitting part 811d may be included.

In addition, the piston fitting portion 811 is located between the first piston fitting portion 811a and the second piston fitting portion 811b, and between the third piston fitting portion 811c and the fourth piston fitting portion 811d. A pair of grooves (8024a, 8024b) are formed in the pair of grooves (8024a, 8024b), and when the piston 310 is fitted into the piston fitting hole 8110, the outer peripheral surface of the piston 310 A fastening member formed in part may be inserted.

That is, the piston 310 may be fastened to the second pad 800 through the lower end contacting the second plate 900 and the fastening member entering the pair of

grooves

8024a and 8024b.

And the piston fitting portion 811 is configured so that the fastening member of the piston 310 is connected to the pair of

grooves

8024a and 8024b during the process of engaging and disengaging the fastening member of the piston 310 and the pair of

grooves

8024a and 8024b. The lower part may be expanded (or flowed) to the outside of the second pad upper part 810 to be drawn in or out from 8024b, and for this purpose, an expansion space 8101 is formed in the space between the second pad upper part 810. It can be.

The upper part of the second pad 810 is made of polyurethane, a material with strong hardness so that the contraction and expansion of the piston 310 and the force thereon can be transmitted to the cap regardless of various external forces that may be applied from the outside. It may be made of at least one of polypropylene and biocompatible silicone.

In addition, the second upper pad 810 may have a hardness of 40 to 60 Shore A in the case of biocompatible silicone, and a hardness of 25 to 30 Asker C in the case of other materials, an embodiment of the present invention. In Asker C, hardness is measured based on the depth of insertion of the indenter into the sample in a state where the resistance of the sample and the force of the spring are balanced by inserting a predetermined type of indenter into the surface of the sample with the force of a spring and deforming it. It can be measured using a hardness meter, and shore hardness measures the height to which a falling object with a small diamond fixed to the end rises when dropped from a certain height.

The second lower pad 820 is part of area D in FIG. 8 and is formed integrally with the upper second pad 810, and is directly connected to the patient's chest pressure point when the piston 310 is expanded toward the patient's chest. By touching, the patient's chest can be compressed.

The second pad lower part 820 has an external appearance of a housing 821, and the housing 821 can be divided into a first housing 821a and a second housing 821b that are integrally formed, and has a plurality of air flow ports. 823, a first seating portion 824, a second seating portion 825, and a partition portion 826 may be included.

The first housing 821a includes a first protruding member insertion hole 822a into which the first protruding member 920 of the second plate 900 is inserted, and the second pad 800 and the second plate 900 are provided. Ensure that the fit coupling is implemented.

The first housing 821a may be divided into a plurality of spaces A in which negative pressure is generated through a plurality of partitions 826, and through this, pressure may be transmitted from the patient's chest to create a space A in between the spaces A. When the volume of is reduced, not only can all of the plurality of lower surfaces move toward the bottom 910 of the second plate 900, but also, among the plurality of lower surfaces, they can be brought into contact with the patient's chest pressure points and move from the patient's chest to a certain extent. Only a portion of the lower surface that receives pressure greater than the intensity may be moved toward the bottom portion 712.

The first protruding member insertion hole 822a is preferably formed on the first housing 821a in a circular shape so that the first protruding member 920 can be fitted into it.

The second housing 821b is connected to the first housing 821a through a plurality of partitions 826 in the structure of the housing 821, and the second protruding member 930 of the second plate 900 is inserted. A second protruding member insertion hole 822b to be coupled is included to enable fitting of the second pad 800 and the second plate 900 with the first housing 821a.

The second protruding member insertion hole 822b is preferably formed on the second housing 821b in a circular shape so that the second protruding member 930 can be fitted into it.

The first housing 821a and the second housing 821b have a space between the second pad 800 and the bottom 910 of the second plate 900 in the fitting structure of the second plate 900. The side wall may protrude upward to create (A, B).

Additionally, the first housing 821a and the second housing 821b may be implemented in a bellows shape so that the volume of the spaces A and B between them can be changed.

The upper portions of the first housing (821a) and the second housing (821b) are coupled to the bottom portion (910) of the second plate (900), and the upper portions of the first housing (821a) and the second housing (821b) are An adhesive means (eg, adhesive) may be provided (or applied) to maintain the fitting structure of the second pad 800 and the second plate 900. However, the adhesive means is not limited to being provided on the top of the first housing 821a and the second housing 821b, and may be provided on the bottom portion 910.

The plurality of air flow ports 823 are formed on the lower surfaces of the first housing 821a and the second housing 821b, respectively. A plurality of first air flow ports are formed on the lower surface of the first housing 821a ( 823a) and a plurality of second air flow ports 823b formed on the lower surface of the second housing 821b.

The first and second air flow ports (823a, 823b) are between the bottom 910 of the second plate 900 and the first housing 821a in the process of compressing the patient's chest through expansion of the piston 310. By flowing the air in the space A and the space B between the bottom 910 and the second housing 821b to the outside, the volume of the spaces A and B can be reduced.

The first seating portion 824 is provided in plural numbers to be respectively provided in the space A between the first housing 821a, which is divided into a plurality of parts through a plurality of partitions 826, and includes a plurality of first air flow ports ( When the air in the interspace A flows outward from 823a) and the volume of the interspace A decreases, it contacts the bottom part 910 of the second plate 900 and the interspace A becomes a negative pressure. make it into a state.

As a specific example, the first seating portion 824 surrounds the center of the lower surface of the bottom portion 910 of the second plate 900 and is vertically parallel to the first seating portion 824. ) When the lower surface circumference of the piston 310 moves downward due to downward pressure from the fastening member provided on the piston 310 through the expansion of the piston 310, the lower surface circumference of the bottom portion 910 and They come into contact, and through this, the space between them (A) can become a negative pressure state.

The second seating portion 825 is provided in the space B between the second housing 821b, and the air in the space B defined from the plurality of second air flow ports 823b flows outward to the When the volume of the space (B) decreases, the space (B) comes into contact with the bottom part (910) of the second plate (900) and becomes a negative pressure state.

As a specific example, the second seating portion 825 is located at the center of the lower surface of the bottom portion 910 of the second plate 900, which is parallel to the second seating portion 825 in the vertical direction. When downward pressure is applied through the expansion of the piston 310 and it moves downward, it comes into contact with the center of the lower surface of the bottom 910, and through this, the space B can become a negative pressure state. there is.

It is preferable that the partition 826 is provided in plural pieces to divide the space A between the first housing 821a into a plurality, and each partition 826 is divided into the first housing 821a and the second housing 821a. It may be provided in a form that connects the housing 821b.

As such, the second lower pad 820 is made of ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, neoprene, It is made of at least one of chloroprene, polyurethane, and biocompatible silicone, and due to the characteristics of this material, it can be implemented as a foam that conforms to the shape of the patient's chest.

And of the second pad lower part 820, biocompatible silicone has a hardness of 10 to 30 Shore A, and other materials have a hardness of 10 to 30 Shore A. It may have a hardness of 10 to 20 Asker C.

Meanwhile, the lower part of the second pad 820 needs to conform to the patient's chest when compressing the patient's chest, and accordingly, the lower parts of the first and

second housings

821a and 821b are in contact with the patient's chest compression point. Among the applicable materials, it is preferable that the cotton is made of biocompatible silicone, which is easy to adapt to the patient's chest. This continuously provides a cushioning effect that relieves and distributes the pressure acting on the patient's chest, thereby helping the patient's chest compression process. It can prevent rib fractures and hemothorax from occurring.

When the second plate 900 is fitted to the second pad lower part 820, the bottom part 910 is connected to the first seating part 824 and the second seating part ( 825).

The lower surface of the bottom portion 910 may be in contact with the seating portion 624 when the volume of the spaces between A and B decreases during compression of the patient's chest.

The second plate 900 includes a first protruding member 920 that can be fitted into the first protruding member insertion hole 822a so as to be fitted with the second pad lower part 820, and a larger body than the first protruding member 920. A second protruding member 930 is provided adjacent to the center of the bottom 910 and can be fitted into the second protruding member insertion hole 822b.

The first protruding member 920 may protrude from the bottom 910 in a circular shape to be fitted into the first protruding member insertion hole 822a.

The second protruding member 930 may protrude from the bottom 910 in a circular shape to be fitted into the second protruding member insertion hole 822b.

The cover according to another embodiment of the present invention fits and couples the second pad 800 and the second plate 900 through a relatively large number of protruding

members

920 and 930 compared to the cover of one embodiment of the present invention. By implementing this, there is an advantage that the fitting structure between the pad and the plate is strengthened.

A detailed description of preferred embodiments of the invention disclosed above is provided to enable any person skilled in the art to make or practice the invention. Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments by combining them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the technical spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation 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 shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit reference relationship in the patent claims can be combined to form an embodiment or included as a new claim through amendment after filing.

The piston cover of the CPR device of the present invention continuously provides the patient with a buffering action that relieves and distributes the pressure acting on the patient's chest during the patient's chest compression process, thereby preventing rib fractures and hemothorax from occurring during the patient's chest compression process. Since it can be prevented, it has industrial applicability.

Claims

In the cover fitted to the piston 310 for compressing the patient's chest,

The cover is,

Between the first piston fitting part 611a and the second piston fitting part 611b forming the piston fitting hole 6110 and between the third piston fitting part 611c and the fourth piston fitting part 611d. A pair of grooves 6024a and 6024b are formed, and when the piston 310 is fitted into the piston fitting 6110, the pair of grooves 6024a and 6024b are formed on a portion of the outer peripheral surface of the piston 310. When the first pad upper part 610, which consists of a piston fitting part 611 into which the fastening member is inserted, and the piston 310 are expanded, negative pressure is generated, pressing the patient's chest pressure point on the lower surface, and the piston ( A first pad 600 integrally formed with a first pad lower part 620 that drags the patient's chest to the lower surface and moves it upward through the negative pressure when 310) is contracted; and

A first plate 700 is provided with a protruding member 720 to be fitted into the first pad lower part 620, and is fitted to the first pad lower part 620 to form an interspace A. Piston cover of a CPR device, characterized in that.
According to claim 1,

The first pad lower part 620,

A housing 621 composed of an outer housing 621a and an inner housing 621b, the upper part of which is integrated with the bottom 710 of the first plate 700;

A plurality of air flow ports 623 formed on the lower surface of the inner housing 621b to allow air to flow in the space A between the inner housing 621b and the bottom 710; and

When the air in the interspace (A) flows outward through the air flow port 623 and the volume of the interspace (A) decreases, it is provided in the interspace (A) to contact the bottom portion (710). A piston cover of a CPR device comprising a seating portion 624.
According to claim 2,

The first pad lower part 620,

A piston cover for a CPR device, characterized in that a protruding member insertion hole (622) through which the protruding member (720) can be fitted is formed at a boundary between the outer housing (621a) and the inner housing (621b).
According to claim 3,

The outer housing 621a and the inner housing 621b are,

In the fitting structure of the first pad 600 and the first plate 700, the side wall forming the protruding member insertion hole 622 is formed on the upper side so that the space A is created between the bottom portion 710 and the first pad 600 and the first plate 700. A piston cover of a CPR device, characterized in that it protrudes.
According to claim 4,

The inner housing 621b is,

When the volume of the space A is reduced so that the bottom part 710 and the seating part 624 provided in the space A come into contact, negative pressure is generated in the space A, and (A) A piston cover of a CPR device, characterized in that when the piston 310 is contracted after negative pressure is generated in (A), it drags the patient's chest to the lower surface and moves upward.
According to claim 1,

The first pad lower part 620,

ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blenc, polystyrene, neoprene, chloroprene, polyurethane, biomaterial Consisting of at least one of biocompatible silicone,

The biocompatible silicone has a hardness of 10 to 30 Shore A, and includes ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, and neoprene ( A piston cover for a CPR device, wherein at least one of neoprene, chloroprene, and polyurethane has a hardness of 10 to 20 Asker C.
According to claim 6,

The first pad lower part 620,

A piston cover for a CPR device, wherein the lower surface that compresses the patient's chest compression points is made of the biocompatible silicone.
According to claim 1,

The first pad 600,

A piston cover for a CPR device, characterized in that it is made of at least one of polyurethane, polypropylene, and biocompatible silicone.
In the cover fitted to the piston 310 for compressing the patient's chest,

The cover is,

Between the first piston fitting part 811a and the second piston fitting part 811b forming the piston fitting hole 8110 and between the third piston fitting part 811c and the fourth piston fitting part 811d. A pair of grooves (8024a, 8024b) are formed, and when the piston 310 is fitted into the piston fitting 8110, the pair of grooves (8024a, 8024b) are formed on a portion of the outer peripheral surface of the piston 310. A second pad upper part 810 consisting of a piston fitting part 811 into which a fastening member is inserted, and when the piston 310 is expanded, a negative pressure is generated and the patient's chest pressure point is pressed to the lower surface, and the piston ( a second pad 800 integrally formed with a second lower pad 820 that drags the patient's chest to the lower surface and moves it upward through the negative pressure when 310) is contracted; and

A first protruding member 920 and a second protruding member 930 are provided to be fitted into the second lower pad 820, and are fitted into the second lower pad 820 to create spaces (A, B) between them. A piston cover of a CPR device comprising a second plate 900 forming a .
According to clause 9,

The second pad lower part 820,

a first housing (821a) whose upper part is coupled to the bottom part (910) of the second plate (900) and which forms a first protruding member insertion hole (822a) into which the first protruding member (920) is inserted;

a second housing (821b) whose upper part is coupled to the bottom part (910) of the second plate (900) and which forms a second protruding member insertion hole (822b) into which the second protruding member (930) is inserted;

A first air flow port 823a that allows air to flow in the space A between the first housing 821a and the bottom 910, and between the second housing 821b and the bottom 910 A plurality of second air flow ports (823b) are formed on each lower surface of the first housing (821a) and the second housing (821b) to allow the air in the space (B) to flow;

A plurality of partition parts 826 for dividing the space A between the first housing 821a into a plurality of partitions 826;

When the air in the interspace (A) flows outward through the first air flow port (823a) and the volume of the interspace (A) decreases, the partition portion (826) is formed to contact the bottom portion (910). a plurality of first seating portions 824 provided in each space (A) divided into a plurality of spaces; and

When the air in the interspace (B) flows outward through the second air flow port (823b) and the volume of the interspace (B) decreases, it is placed in the interspace (B) so as to contact the bottom part (910). A piston cover of a CPR device comprising a second seating portion 825.
According to claim 10,

The first housing 821a and the second housing 821b are,

In the fitting structure of the second pad 800 and the second plate 900, the first protruding member insertion hole 822a and the 2 A piston cover of a CPR device, characterized in that the side wall forming the protruding member insertion hole (822b) protrudes upward.
According to claim 11,

The first housing 821a and the second housing 821b are,

When the volume of the space between A and B is reduced so that the bottom part 910 and the first seating part 824 and the second seating part 825 come into contact with each other, negative pressure is generated in the space between A and B. A piston cover of a CPR device, which is generated and moved upward, dragging the patient's chest to the lower surface when the piston (310) is contracted after negative pressure is generated in the spaces (A, B).
According to clause 9,

The second pad lower part 820,

ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blenc, polystyrene, neoprene, chloroprene, polyurethane, biomaterial Consisting of at least one of biocompatible silicone,

The biocompatible silicone has a hardness of 10 to 30 Shore A, and includes ethylene-vinyl acetate, polyethylene, polyethylene-polypropylene blend, polystyrene, and neoprene ( A piston cover for a CPR device, wherein at least one of neoprene, chloroprene, and polyurethane has a hardness of 10 to 20 Asker C.
According to claim 13,

The second pad lower part 820,

A piston cover for a CPR device, wherein the lower surface that compresses the patient's chest compression points is made of the biocompatible silicone.
According to clause 9,

The second pad 800,

A piston cover for a CPR device, characterized in that it is made of at least one of polyurethane, polypropylene, and biocompatible silicone.