Portable cardiopulmonary resuscitation feedback device combined with safety whistle

Abstract

The present invention relates to a cardiopulmonary resuscitation feedback device and, more specifically, to a portable cardiopulmonary resuscitation feedback device that has a relatively small size compared to general cardiopulmonary resuscitation feedback devices and thus is easy to carry, has a compression portion corresponding to the position of the sternum such that the position of cardiopulmonary resuscitation can easily be identified, is applicable to both adults and children because the intensity can be adjusted, and has a safety whistle combined therewith that generates a sound when a specific level of compression is applied. In order to achieve the aforementioned objective, the portable cardiopulmonary resuscitation feedback device combined with a safety whistle, according to the present invention, comprises: a pushing unit; a supporting unit connected by being hooked to the pushing unit; a compressing unit formed of a non-slip material and located at the center of the supporting unit; an intensity adjusting unit located inside the pushing unit and the supporting unit and in which compression intensity is adjusted; and a feedback portion located inside the pushing unit and the supporting unit and generating a sound via the compression.

Description

Portable CPR feedback device with safety whistle

[0001] The present invention relates to a cardiopulmonary resuscitation feedback device, and more particularly, to a portable cardiopulmonary resuscitation feedback device that is relatively smaller than a typical cardiopulmonary resuscitation feedback device and thus easy to carry, has a compression portion corresponding to the position of the sternum to easily confirm the position of cardiopulmonary resuscitation, has an intensity adjustment capability so that it can be applied to both adults and children, and is combined with a safety whistle that generates a sound when a certain level of compression is applied.

[0002] CPR is a widely used emergency treatment method to revive people whose hearts have stopped beating or who are not breathing.

[0003] Recently, in Korea, the number of cardiac arrest patients has been steadily increasing due to the aging population and changes in eating habits, exceeding ten thousand per year. However, only a very small number of cardiac arrest patients receive CPR from bystanders.

[0004] For this reason, CPR is a substitute for the heart's role of supplying blood to the entire body, and requires tremendous physical strength as it is performed at a rapid rate of over 100 beats per minute, with an intensity that can break the patient's ribs, and must be performed without stopping until the patient is handed over to the paramedics. If the speed and intensity of CPR are not appropriate, the effect will be minimal, and if CPR is stopped before the patient is handed over to the paramedics, the patient's brain will be rapidly damaged, and the patient's life may be in danger due to lack of blood supply.

[0005] CPR is essential for patients with cardiac arrest in this critical condition. In Korea, everyone from elementary school students to adults receives safety training including CPR, and they are taught the importance and necessity of CPR from an early age.

[0006] However, the reason why only a very small number of people perform CPR on cardiac arrest patients is because non-expert bystanders have only received simple training and have no experience performing CPR on patients themselves, and they hesitate to perform CPR because they cannot confirm whether they are performing CPR properly.

[0007] Additionally, even when performing CPR, it is difficult to be sure whether the compression strength and rate are correct, and it is difficult to determine what effect the CPR performed has on the patient.

[0008] Additionally, it is difficult to perform proper CPR due to a lack of specialized knowledge to perform additional functions.

[0009] Accordingly, various CPR training methods are being developed and applied, and representative examples include professional instructors providing training and various devices being developed and applied to CPR training.

[0010] Conventional educational methods are expensive and have limited portability, so they mainly use equipment located in specific spaces, and it is difficult to use the equipment outdoors.

[0011] Accordingly, there is a growing need for a device that provides feedback during CPR and is easy to carry, allowing it to be performed without specialized knowledge.

[0012] The present invention was invented to improve the above-mentioned problems, and the purpose of the present invention is to provide a portable cardiopulmonary resuscitation feedback device that includes a pressing part, a support part connected to the pressing part, a pressing part formed of a non-slip material and located at the center of the support part, a strength adjustment part for adjusting the strength of the pressing, and a feedback part for generating a sound according to the strength of the pressing, and is formed with a simple structure for ease of use while improving portability compared to the prior art, and is combined with a safety whistle capable of providing feedback on cardiopulmonary resuscitation.

[0013] The purpose of the present invention is not limited to the purposes mentioned above, and other purposes not mentioned can be clearly understood from the description below.

[0014] In order to achieve the above object, the present invention provides a portable cardiopulmonary resuscitation feedback device combined with a safety whistle, comprising: a pressing portion; a support portion connected by being hooked to the pressing portion; a compression portion formed of a non-slip material and located at the center of the support portion; a strength adjustment portion located inside the pressing portion and the support portion and having a compression strength adjusted; and a feedback portion located inside the pressing portion and the support portion and generating a sound by compression.

[0015] In addition, the pressing part includes an exterior auxiliary means for additionally forming an exterior, and the exterior auxiliary means further includes a safety device and a carrying device, which is a technical feature.

[0016] In addition, the strength control unit is characterized by including an elastic means formed of a plurality of springs; and a depth control means formed in the shape of a square plate having a thickness penetrating from one side of the outer surface of the pressing unit to the inside, and including a plurality of protrusions having different heights on one side.

[0017] In addition, the compression member is formed in an oval shape so that it can be placed on the sternum, and one side is formed as a flat surface to be combined with the support member, and the other side is formed as a protruding round surface so that it can be placed on the sternum.

[0018] In addition, the feedback unit is characterized by including a contact means having one side separated from or in contact with the depth control means of the intensity control unit; and a sound means made of a metal material separated from or in contact with the other side of the contact means.

[0019] The present invention with the above-described configuration can expect the following effects.

[0020] Compared to conventional technology, it is relatively smaller in size, which improves portability and allows it to be carried around at any time. In addition, space constraints are reduced, which improves usability.

[0021] By applying a compression area that is formed in a shape corresponding to the sternum, it becomes possible to easily identify the location where compression is applied during cardiopulmonary resuscitation.

[0022] In addition, since the palm-shaped shape is included, the shape of the hand can be roughly identified when performing CPR, making it easy for even users without specialized knowledge to check and use.

[0023] A strength control unit is included to enable control of the compression strength and depth, and by applying a simple structure to control the compression strength and depth, it is possible to apply it to both children and adults.

[0024] When a safety whistle is applied, it is possible to warn or transmit information about the emergency to those around you in case of an emergency.

[0025] By using the present invention without direct contact with the body, it is possible to minimize physical contact, maintain hygiene, and reduce rejection due to gender differences.

[0026] When a certain level of pressure is applied, a sound is generated through the feedback section, enabling feedback on whether or not CPR is being performed correctly.

[0027] Considering that disasters and emergencies occur unpredictably, the physical design allows for use and feedback even in areas without power.

[0028] FIG. 1 is a configuration diagram of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0029] FIG. 2 is a schematic diagram of an external auxiliary means in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0030] FIG. 3 is a schematic diagram of a pressure unit in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0031] FIG. 4 is a schematic diagram of a feedback unit in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0032] FIG. 5 is a plan view of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0033] FIG. 6 is a side view of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0034] FIG. 7 is a schematic diagram of a depth control means in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0035] Hereinafter, a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0036] FIG. 1 is a configuration diagram of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, FIG. 2 is a schematic diagram of an external auxiliary means in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, FIG. 3 is a schematic diagram of a pressure unit in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, FIG. 4 is a schematic diagram of a feedback unit in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, FIG. 5 is a plan view of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, FIG. 6 is a side view of a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention, and FIG. 7 is a schematic diagram of a depth control means in a portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention.

[0037]

[0038] A portable cardiopulmonary resuscitation feedback device combined with a safety whistle according to a preferred embodiment of the present invention may be composed of a pressing part (100), a supporting part (200), a compression part (300), an intensity control part (400), and a feedback part (500) as shown in FIG. 1.

[0039]

[0040] In the description below, the subject using the present invention is referred to as a user, and the subject receiving compression through cardiopulmonary resuscitation by using the present invention is referred to as a subject user.

[0041]

[0042] First, let’s look at the pressing part (100).

[0043] The pressing part (100) is the part that comes into contact with a part of the user's palm during cardiopulmonary resuscitation, and may be formed in a cylindrical shape with one side flat, so that the outer shape of one side may be formed in a circular shape.

[0044] In detail, the pressing part (100) is formed to have a relatively smaller area than an adult's hand, but has a space inside and a part of the surface is formed to be open in the shape of a circular hole, so that it can be combined with the supporting part (200) described later in a hooked form, and when performing cardiopulmonary resuscitation, it is formed to have an appropriate size for the palm excluding the fingers, so that the position of the hand can be easily identified for performing compression, and the efficiency of compression can be improved.

[0045] In addition, a plurality of protruding fixing protrusions (110) of different shapes are combined on one side of the inner surface of the pressing part (100) so that a strength control part (400) to be described later can be positioned, and the outer edge may be formed in a round shape.

[0046] The pressing part (100) is formed in a structure in which a part and the other part are separated in order to be connected in a hooked manner with the support part (200) described later as described above, and various methods such as bolt connection, cross connection, and insertion connection can be applied to connect the separated structure, but it may be preferable to generally use bolt connection.

[0047] In addition, the pressing part (100) may include an external auxiliary means (130) so that even a user without specialized knowledge of cardiopulmonary resuscitation can easily confirm the shape and position of the hand.

[0048] In detail, the external auxiliary means (130) is formed in a manner of being fitted or joined to the outside of the pressing part (100) formed in a circular shape, and is formed in the shape of a palm including a shape of one side of both hands in the correct form formed during cardiopulmonary resuscitation, so that even a general user without specialized knowledge of cardiopulmonary resuscitation can perfectly understand the shape and position of the hands for performing cardiopulmonary resuscitation.

[0049] As described above, the external auxiliary means (130) is generally formed in the shape of a palm, but various shapes may be applied depending on the necessary environment or situation of the present invention, and depending on the presence or absence of specialized knowledge of cardiopulmonary resuscitation, it may be possible to form it in a plurality of types and different shapes for the convenience of use.

[0050] Accordingly, considering the purpose of the present invention, the pressing part (100) is generally formed in a state of being combined with the external auxiliary means (130), but it may be possible to form it in a structure that can be separated depending on the situation.

[0051] In addition, the exterior auxiliary means (130) included in the pressing part (100) may further include a safety device (150) and a portable device (170) to add functions of the present invention.

[0052] The safety device (150) is generally applied with a whistle, and the whistle is located on one side of the external auxiliary means (130), and can be helpful in identifying the user's location in various accidents, emergencies, critical situations, disasters, and isolation situations, and in order to output a safe and reliable rescue signal, it may be possible to use one that satisfies the safety whistle certification conditions corresponding to the international standard ISO 12402-8 adopted by the Korean Industrial Standard.

[0053] The portable device (170) is formed as an open hole located on the other side of the external auxiliary means (130), and the portability of the present invention can be improved by mounting a key ring, strap, etc.

[0054] The pressing portion (100) is a portion that directly transmits pressure when in contact with the user, and it may be desirable to form it from a material that has high durability against deformation and breakage and easily adheres to the user's palm.

[0055]

[0056] Next, we will look at the support (200).

[0057] The support member (200) is positioned and coupled to an open circular hole on the other side of the pressing member (100), and may be formed in a cylindrical shape with one side open, and the edge of one side may be formed in a shape that protrudes outward for coupling with the pressing member (100).

[0058] Accordingly, when the support part (200) and the pressing part (100) are combined, the internal space is formed in a closed form, and it may be possible for the strength control part (400) to be described later to be positioned inside.

[0059] The support member (200) is formed by combining a plurality of protruding fixing projections (110) of different shapes so that a strength adjustment member (400) to be described later can be positioned, similar to the pressing member (100), and a joining groove can be formed on the other surface so that a pressing member (300) to be described later can be joined.

[0060] The coupling grooves may be formed in multiple numbers for easy coupling with the compression member (300) described later, and the multiple coupling grooves may be formed in different shapes.

[0061] Accordingly, the shape of the connecting groove, which is generally located in the center, is an arrow shape and serves to fix and prevent separation, and a plurality of connecting grooves located on the outside are formed in the same shape and serve to designate the assembly position of the compression member (300) to be described later.

[0062] A mounting means (210) is formed on one inner surface of the support member (200) so that a feedback member (500) to be described later can be combined therewith. However, it may be possible to form it in a round shape to correspond to the feedback member (500) to be described later.

[0063] Additionally, the mounting means (210) may further include a plurality of positioning protrusions so as to be able to designate the coupling position of the feedback unit (500) to be described later.

[0064] The support means (210) may be formed in a shape that protrudes from one side of the inner surface of the support part (200), but in order to improve portability and reduce self-weight, the outer surface of the support part (200) may be formed in a sunken shape, so that one side is formed in a round shape and the inside is formed in a hollow shape.

[0065] The support part (200) is a part that is subjected to pressure by the pressing part (100) and is combined with a pressing part (300) to be described later and comes into contact with the user. It may be desirable to form the support part (200) with a material that has high durability against deformation and damage like the pressing part (100) and does not affect the safety of the user.

[0066]

[0067] Next, we will look at the pressure part (300).

[0068] The pressure part (300) is coupled to the other surface of the support part (200), but is formed to be relatively smaller in size than the support part (200), and may be formed of a different material from the support part (200).

[0069] In detail, the compression member (300) may be formed in an oval shape, with one side formed as a flat surface to be combined with the support member (200), and the other side formed as a protruding round surface to be placed on the sternum.

[0070] Accordingly, the compression unit (300) can be easily placed on the sternum of the user during cardiopulmonary resuscitation, and even a user without specialized knowledge of cardiopulmonary resuscitation can easily confirm the contact position of the present invention to perform cardiopulmonary resuscitation.

[0071] In addition, the compression member (300) is formed of a non-slip material with weak ductility, so that it can be used as a cushion to protect the user by reducing the pressure burden on the user during compression by cardiopulmonary resuscitation.

[0072] The pressure part (300) uses the joint groove of the support part (200) to be joined with the support part (200), and a plurality of joint protrusions (310) are formed on one surface to correspond to the shape of the joint groove described above, and it may be possible to form them in a different shape like the joint groove.

[0073] Accordingly, the pressure part (300) can be firmly connected at an accurate position using the connecting projection (310) and the connecting groove, and the pressing part (300) can be fixed to the support part (200) and prevented from being detached due to the arrow-shaped connecting projection (310) of the pressing part (300) corresponding to the arrow-shaped connecting groove described above.

[0074]

[0075] Next, we will look at the intensity control unit (400).

[0076] The intensity control unit (400) is a unit that controls the compression intensity during cardiopulmonary resuscitation using the present invention, and may be positioned between the pressing unit (100) and the support unit (200).

[0077] In detail, the strength control unit (400) basically adds elasticity, but by controlling the depth of compression according to the user's situation, it is possible to apply compression at a depth suitable for the user.

[0078] Accordingly, the strength control unit (400) may include an elastic means (410) that generates elasticity with a plurality of springs and a depth control means (430) that controls the depth of compression.

[0079] The elastic means (410) is formed by a plurality of springs as described above, and generally four springs are used in a radial shape, but depending on the situation, it may be possible to apply a different number of springs.

[0080] In addition, the elastic means (410) may be fixed and positioned in the present invention, and may be fixed by being inserted into or caught on a fixing projection (110) formed in the pressing portion (100) and the supporting portion (200).

[0081] Accordingly, it may be possible to prevent the elastic means (410) from being dislodged during the compression process during cardiopulmonary resuscitation.

[0082] The depth control means (430) is formed in the shape of a square plate having a thickness that penetrates from the outside to the inside of the pressing part (100), and it may be possible for one side to include a plurality of protrusions with different heights.

[0083] In detail, the depth control means (430) is positioned on one side outside the pressing part (100) and on the other side inside the pressing part (100) so that the pressing depth can be manually controlled from the outside of the present invention, and protrusions of different heights are formed spaced apart on one side to limit the height during pressing, thereby enabling the pressing depth to be controlled.

[0084] Accordingly, the depth control means (430) may include a plurality of protruding square-shaped protrusions composed of a first protrusion (431), a second protrusion (433), and a third protrusion (435).

[0085] The first protrusion (431) is formed on the depth control means (430) located on the outside of the pressing part (100), and is a part that the user grips to control the depth. It is used when pushing or pulling the depth control means (430), and it may be possible to form a protrusion protruding from one side of the depth control means (430) to facilitate gripping.

[0086] The second protrusion (433) is formed on one side of the depth control means (430) located inside the pressing part (100), and protrudes at a low height, so that when pressing, the contact distance with the feedback part (500) to be described later increases, thereby increasing the depth and intensity of the pressing, and thus enabling the pressing depth to be controlled to the compression depth of adult cardiopulmonary resuscitation.

[0087] The third protrusion (435) is formed on the other side of the depth control means (430) located inside the pressing part (100), and protrudes at a relatively higher height than the second protrusion (433), so that when pressing, the contact distance with the feedback part (500) to be described later is reduced, so that the depth and intensity of the pressing are reduced, and thus it is possible to control the compression depth for CPR of infants and children.

[0088] The strength control unit (400) is a part where continuous pressure is applied, and a material or product with high durability against deformation and breakage is applied. However, it may be preferable that the elastic means (410) is additionally made of a product with high elasticity and excellent resilience, and the depth control means (430) is additionally made of a material with high durability against continuous contact with the feedback unit (500) described later.

[0089]

[0090] Next, we will look at the feedback section (500).

[0091] The feedback unit (500) is positioned on the support unit (200) mounting means (210), and when appropriate compression is performed, a sound is generated, so that it is possible to provide feedback on whether cardiopulmonary resuscitation is appropriate.

[0092] In detail, the feedback unit (500) is positioned on the support unit (200) mounting means (210) and is positioned apart from the depth control means (430). However, when compression occurs due to cardiopulmonary resuscitation, the feedback unit (500) comes into contact with the second protrusion (433) or the third protrusion (435) of the depth control means (430), and it may be possible for a sound to be generated by deformation of the feedback unit (500).

[0093] Accordingly, the compression depth and intensity are changed according to the settings of the intensity control unit (400), and when appropriate compression is performed according to the changed settings, a sound is generated, so that feedback can be provided so that even a user without specialized knowledge of cardiopulmonary resuscitation can determine whether appropriate compression is being performed.

[0094] To enable the above-described content, the feedback unit (500) may include a contact means (510) and a sound means (530).

[0095] The contact means (510) is formed as a protruding projection that is separated from or in contact with the depth control means (430) of the strength control unit (400) during the pressing process, but is combined with the sound means (530). In order to prevent breakage and deformation, one side of the contact means (510) may be formed in a round shape with a relatively larger area than the contact surface with the second protrusion (433) and the third protrusion (435).

[0096] The sound means (530) is formed as a round surface having a thickness and is spaced apart from or in contact with the other side of the contact means (510), and may be capable of generating sound by deformation.

[0097] In detail, the sound means (530) may be configured to have a structure in which, when the contact means (510) comes into contact with the depth control means (430), a round shape is deformed by a force of pressure, and a sound is generated as the shape is deformed.

[0098] Accordingly, the sound means (530) may be made of various materials that generate sound by deformation, but it may be preferable to use a metal material that is generally highly durable against deformation and breakage and can generate sound of an appropriate size.

[0099] In addition, the sound means (530) may be formed with a plurality of through holes through which the positioning protrusions penetrate so that the sound means (530) is fixed and positioned by the positioning protrusions of the support member (200) mounting means (210), and it may be possible for the plurality of through holes to be formed with different shapes to correspond to the shape of the positioning protrusions.

[0100]

[0101] Based on the above-described configuration, the operating state of the present invention will be examined.

[0102] First, in the present invention, the upper part is positioned as a pressing part (100) and the lower part is positioned as a support part (200) as a standard.

[0103] Before using the present invention, the user can adjust the depth control means (430) of the intensity control unit (400) to set the device to suit the user's situation and correct the user's position, thereby completing preparations for cardiopulmonary resuscitation using the present invention.

[0104] The user positions the present invention at a point where compression for cardiopulmonary resuscitation is to be performed, and the compression unit (300) can be positioned parallel to the sternum so that it contacts the sternum of the victim and is properly contacted.

[0105] After the position of the present invention for the user is completed by the compression member (300), the user can check the palm-shaped compression member (100) positioned in the direction of collection with the sternum, and the position and shape of the hand for cardiopulmonary resuscitation can be confirmed by the palm-shaped applied to the compression member (100).

[0106] The position and shape of the hand described above are in contact with the pressing part (100), and the user can perform CPR compressions.

[0107] When applying pressure using the present invention, if the user applies appropriate pressure, a sound is generated by the sound means (530), and if inappropriate pressure is applied, no sound is generated, so that the user can receive feedback to ensure that appropriate pressure is applied.

[0108] Based on the above-described information, the location where CPR compressions will be performed, the position and shape of the hands, the depth and intensity of compression, etc. can be easily confirmed, so that even users without specialized knowledge of CPR can easily perform CPR.

[0109] Additionally, it is small in size and can be attached to a key ring or strap, making it easy to carry.

[0110] In addition, the present invention can be driven without a separate power supply through a physical design, and feedback is provided through driving, thereby reducing restrictions on the usage environment and location.

[0111]

[0112] The above-described embodiments are merely exemplary, and those skilled in the art may devise other embodiments with various modifications therefrom.

[0113] Therefore, the true technical protection scope of the present invention should include not only the above-described embodiments but also other embodiments modified in various ways by the technical idea of ​​the invention described in the claims below.

[0114] The present invention relates to a cardiopulmonary resuscitation feedback device, which is relatively small in size and easy to carry, has a compression part corresponding to the position of the sternum so that the position of cardiopulmonary resuscitation can be easily confirmed, and can be applied to both adults and children because the intensity can be adjusted, and is combined with a safety whistle that generates a sound when a certain level of compression is applied, so that it can be manufactured and used as a portable first aid kit in the form of an accessory for emergency use, and can also be widely used as a teaching aid for determining whether cardiopulmonary resuscitation is being performed correctly for educational purposes.

Claims

1. Pressing part; A support part connected by a hook-and-loop connection with the above pressing part; A compression member formed of a non-slip material and positioned at the center of the above support member; A strength control unit located inside the above pressing unit and supporting unit, wherein the pressure strength is controlled; and A portable cardiopulmonary resuscitation feedback device having a safety whistle formed of a feedback section that generates sound by pressure and is located inside the above-mentioned pressing section and support section.

2. In paragraph 1, A portable cardiopulmonary resuscitation feedback device combined with a safety whistle, characterized in that the pressing part includes an external auxiliary means for additionally forming an external appearance, and the external auxiliary means further includes a safety device and a portable device.

3. In paragraph 1, The above intensity control unit An elastic means formed by a plurality of springs; and A portable cardiopulmonary resuscitation feedback device combined with a safety whistle, characterized in that it includes a depth control means formed in the shape of a square plate having a thickness penetrating from the outer side of the pressing part to the inner side, and including a plurality of protrusions having different heights on one side.

4. In paragraph 1, A portable cardiopulmonary resuscitation feedback device combined with a safety whistle, characterized in that the compression member is formed in an oval shape so as to be seated on the sternum, one side is formed as a flat surface to be combined with the support member, and the other side is formed as a protruding round surface so as to be seated on the sternum.

5. In paragraph 1, The above feedback section A contact means that is separated from or in contact with the depth control means of the above strength control unit; and A portable cardiopulmonary resuscitation feedback device combined with a safety whistle, characterized in that it includes a sound means made of a metal material that is separated from or in contact with the other side of the above contact protrusion means.

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