WO2020075212A1 - Sternal compression training dummy - Google Patents

Abstract

Provided is a sternal compression training dummy which has a novel structure, and with which it is possible to detect a location for compression with high precision during a sternal compression training. A sternal compression training dummy 10 is provided with a torso part 14 on which compression is to be exerted by a trainee during a training of sternal compression, wherein a surface pressure distribution sensor 24 for detecting a distribution of pressure applied on the torso part 14 when the sternum is subjected to compression is disposed in the anterior chest of the torso part 14 so as to be elastically supported by an elastic support 20, and a cover body 54 that is modelled on the surface of the anterior chest of a human body is provided in such a manner as to cover the anterior chest-side surface of the surface pressure distribution sensor 24.

Description

Chest compression training doll

The present invention relates to a chest compression training doll for detecting the distribution of pressure acting on the chest due to chest compression.

Conventionally, cardiopulmonary resuscitation (CPR) by chest compression has been known as one of life-saving measures for cardiac arrest. As is generally known, cardiopulmonary resuscitation using chest compressions involves chest compressions in which a rescuer intermittently compresses the chest of a victim who is in cardiac arrest and artificially produces a heartbeat. By doing so, the supply of oxygen to the brain and the like due to the circulation of blood is maintained and the resumption of heartbeat is promoted.

By the way, in cardiopulmonary resuscitation using chest compressions, the depth of chest compressions during compressions, the number of compressions per unit time, sufficient chest release (recoil) between chest compressions, and the ratio of chest compression time (duty cycle), etc. Since it is required to be appropriate, it is important to perform appropriate chest compression training with a chest compression training doll provided with a torso that imitates a human body. In the chest compression training doll, for example, as in the resuscitation education human body model disclosed in Japanese Patent Application Laid-Open No. 8-190340 (Patent Document 1), a chest plate (9) corresponding to the chest of the human body has a spring (17). It is elastically supported, and the chest plate is pushed to the back side by chest compression. Furthermore, the chest plate is connected to the load cell (6) so that the magnitude of the compression force exerted on the chest plate can be detected by the load cell.

However, in the structure of Patent Document 1, the depth of pushing of the chest plate due to chest compression can be detected by the load cell, but it cannot be determined by the load cell whether or not the compression position is appropriate. Note that Patent Document 1 also discloses a structure in which a tact switch (24) for determining a compression position is provided, but it is not possible to identify the compression position because only the compression position is correct. However, since it is necessary to provide a tact switch separately from the load cell, the structure becomes complicated. Moreover, since the protrusion (9b) that presses the tact switch is provided on the hard chest plate, it is difficult to accurately determine the suitability of the compression position, and when a position deviated from the appropriate compression position is compressed. However, there is a possibility that the tact switch is pushed in and it is determined that the compression position is appropriate.

JP-A-8-190340

The present invention has been made in view of the above circumstances, and a problem to be solved is to provide a chest compression training doll with a novel structure capable of highly detecting a compression position during a chest compression training. To provide.

The applicant of the present invention has proposed a cardiopulmonary resuscitation assisting device capable of detecting a compression position and the like in chest compression training in Japanese Patent Application Laid-Open No. 2016-123844. According to this cardiopulmonary resuscitation assisting device, it is possible to accurately detect the compression position based on the detection result of the flexible electrostatic capacitance type surface pressure distribution sensor. By the way, the cardiopulmonary resuscitation assisting device is also used for assisting cardiopulmonary resuscitation, and therefore, for example, if the pressure-sensitive portion of the cardiopulmonary resuscitation assisting device that is superposed on the chest surface is pressed, an appropriate region in the chest is obtained. The position of the assistive device for cardiopulmonary resuscitation itself points to the proper position for chest compressions. However, for example, in the case of training for the purpose of improving the technique for identifying an appropriate compression position from the structure of the human body, a cardiopulmonary resuscitation assisting device placed on the chest surface so as to indicate the compression position is used. Then, it was thought that it was difficult to obtain the effect of training efficiently.

The following describes aspects of the present invention made to solve such problems. The constituent elements used in each of the following aspects can be used in any combination as much as possible.

That is, the first aspect of the present invention is a chest compression training doll provided with a torso to be compressed by a trainee during chest compression training, and a distribution of pressure acting on the torso during chest compression. The surface pressure distribution sensor for detecting the pressure is elastically supported by an elastic support and disposed on the front chest of the body, and the cover body imitating the surface of the front chest of the human body is disposed on the front chest of the surface pressure distribution sensor. It is characterized in that it is provided so as to cover the surface on the side.

According to the chest compression training doll configured according to the first aspect, various parameters such as depth and rhythm of chest compression, recoil, duty cycle, and compression position are determined based on the detection result of the surface pressure distribution sensor. Therefore, efficient training of chest compressions is realized.

Further, since the surface pressure distribution sensor is covered by the cover body and the surface of the cover body imitates the surface of the anterior chest of the human body, the trainee can correct the compression of the chest according to the position of the surface pressure distribution sensor. By preventing the region from being grasped, the trainee can effectively perform the training to identify the proper region of the chest compression based on the structure of the human body.

According to a second aspect of the present invention, in the chest compression training doll described in the first aspect, the surface pressure distribution sensor is in the form of a flexible sheet.

According to the second aspect, since the surface pressure distribution sensor has a sheet shape, it can be arranged in a narrow space. Moreover, since the surface pressure distribution sensor has flexibility, for example, even if the surface pressure distribution sensor is arranged directly below the cover body, the trainee may feel a difference in tactile sensation depending on the presence or absence of the surface pressure distribution sensor. It is possible to more effectively prevent the position of chest compression that is difficult to feel and is specified by the arrangement position of the surface pressure distribution sensor.

According to a third aspect of the present invention, in the chest compression training doll described in the second aspect, the surface pressure distribution sensor includes a plurality of first electrode layers and a plurality of second electrode layers extending in mutually opposing directions. The electrode layer has a structure in which it is superposed on each of the front and back surfaces of the dielectric layer, and the capacitance due to the change in the facing distance at each intersecting facing portion of the first electrode layer and the second electrode layer. Is a capacitance type sensor that detects pressure based on the change of

According to the third aspect, since the surface pressure distribution sensor is the capacitance type sensor, the pressure exerted by the chest compression can be accurately detected. Moreover, the number of intersecting and facing portions of the first electrode layer and the second electrode layer can be increased with a small number of electrode layers.

A fourth aspect of the present invention is the chest compression training doll described in the second or third aspect, wherein the surface pressure distribution sensor has an appropriate compression region and the periphery of the appropriate compression region. In addition, a detectable area having an area of 1.7 times or more is provided.

According to the fourth aspect, not only whether or not the compression position is in the proper compression region, even when the position deviated from the proper compression region is compressed, the pressure is detected by the detectable region having a sufficient area. Can be detected. Therefore, even when a position outside the proper compression region is compressed, various parameters such as the depth of compression can be obtained, and the extent (distance) at which the compression position deviates from the proper compression region is grasped. You can also

A fifth aspect of the present invention provides the chest compression training doll according to any one of the second to fourth aspects, wherein the surface pressure distribution sensor has an area equal to or larger than an average area of the lower half of the sternum of an adult. It is provided with the compression detection area which has.

According to the fifth aspect, the compression detection region is set to have a larger area than the proper compression region for chest compression, and not only whether or not the compression position is in the proper compression region but also the proper compression region is deviated. The pressure can be effectively detected even when the compressed position is pressed. Therefore, even when a position outside the proper compression region is compressed, various parameters such as the depth of compression can be obtained, and the extent (distance) at which the compression position deviates from the proper compression region is grasped. You can also

A sixth aspect of the present invention is the chest compression training doll described in any one of the first to fifth aspects, wherein the cover body is provided so as to cover substantially the entire anterior chest side of the body. It is what

According to the sixth aspect, it is possible to prevent an appropriate compression region from being specified by a cut or the like in the cover body, for example, by covering substantially the entire front chest side of the body with the continuous cover body. .

A seventh aspect of the present invention is the chest compression training doll described in any one of the first to sixth aspects, wherein a hard support member is provided between the elastic support and the surface pressure distribution sensor. The surface pressure distribution sensor is provided so as to be superposed on and supported by the support member.

According to the seventh aspect, since the surface pressure distribution sensor is superposed on the hard support member, the pressure detection accuracy of the surface pressure distribution sensor can be improved. In addition, since the support member functions so as to imitate the front part of the chest of the human body during chest compression, the trainee can be given a response similar to that when performing actual chest compression on the human body.

According to an eighth aspect of the present invention, in the chest compression training doll described in the seventh aspect, the surface pressure distribution sensor is integrally provided on the support member.

According to the eighth aspect, since the surface pressure distribution sensor is formed in a state of being positioned with respect to the support member, a special positioning structure such as adhesion is unnecessary. Moreover, since the surface pressure distribution sensor can be handled as an integral part with the hard support member, the management and handling of the surface pressure distribution sensor are facilitated, and the assembling work to the body is also simplified.

A ninth aspect of the present invention is the chest compression training doll described in any one of the first to eighth aspects, wherein the surface pressure distribution sensor is integrally provided on the cover body. is there.

According to the ninth aspect, since the surface pressure distribution sensor is formed in a state of being positioned with respect to the cover body, a special positioning structure such as adhesion is unnecessary. Moreover, since the surface pressure distribution sensor can be handled as a component integrated with the cover body, the management and handling of the surface pressure distribution sensor are facilitated, and the assembling work to the body is also simplified.

A tenth aspect of the present invention is the chest compression training doll described in any one of the first to ninth aspects, wherein the surface pressure distribution sensor is positioned in the surface direction with respect to the body. Is provided.

According to the tenth aspect, the surface pressure distribution sensor can be held at the correct position with respect to the body.

According to an eleventh aspect of the present invention, in the chest compression training doll described in any one of the first to tenth aspects, a display device for displaying information based on a detection result of the surface pressure distribution sensor is connected. It has been done.

According to the eleventh aspect, the training result based on the detection result of the surface pressure distribution sensor can be easily understood by the trainee or the like after the training or in real time.

A twelfth aspect of the present invention is the chest compression training doll described in any one of the first to eleventh aspects, wherein the surface pressure distribution sensor and the cover body are overlapped in a contact state. It is a thing.

According to the twelfth aspect, since the surface pressure distribution sensor and the cover body are in contact with each other without a space therebetween, the accuracy of pressure detection can be improved during compression of the chest, and the compression depth is particularly small. Even in this case, the compression can be effectively detected.

According to the present invention, in the chest compression training, not only the depth of compression but also the compression position can be detected highly.

1 is a plan view showing a chest compression training doll as a first embodiment of the present invention. II-II sectional drawing of FIG. The top view which shows the state which removed the cover body in the chest compression training doll of FIG. The top view of the surface pressure distribution sensor which comprises the doll for chest compression training shown in FIG. FIG. 5 is a sectional view taken along line VV of FIG. 4. The figure which shows an example of a display of the surface pressure distribution and the action center position of pressure in training using the chest compression training doll shown in FIG. Sectional drawing which shows the chest compression training doll as another one Embodiment of this invention. The exploded perspective view which shows the chest compression training doll as another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a chest compression training doll 10 (hereinafter, training doll 10) as a first embodiment of the present invention. The training doll 10 is used in the training of cardiopulmonary resuscitation by compression of the chest, and as a whole imitates the upper half of the human body excluding the arms, and includes a head 12 and a body 14. In the following description, the vertical direction means the vertical direction in FIG. 2 in principle.

More specifically, the body portion 14 is a portion of the training doll 10 to be pressed by the trainee, is formed of hard synthetic resin, metal, or the like, and as shown in FIGS. The housing space 16 has a hollow structure, and the housing space 16 is opened to the outside through an opening 18 formed on the upper side (upper side in FIG. 2) on the precordial side. Although the front surface (upper surface) of the torso portion 14 is substantially flat in the present embodiment, for example, a convex curve that is convex upward as a whole so as to be closer to the shape of the front surface of the torso portion of the human body. It can also be a curved surface with a shaped cross section.

Further, an elastic support body 20 is arranged in the accommodation space 16 of the body portion 14. The elastic support 20 is a foam of rubber or synthetic resin and is elastically deformable in the vertical direction. In the present embodiment, for example, it is formed of urethane foam or polyethylene foam. The elastic support 20 has a lower surface that is superposed on the inner surface on the back side of the body portion 14 while being in contact therewith, and an upper portion that projects upward from the opening 18 of the body portion 14.

Also, a support member 22 is superposed on the upper surface of the elastic support body 20. The support member 22 is a plate-shaped member formed of a hard synthetic resin or the like, and has a flat plate shape in the present embodiment, but for example, irregularities imitating the ribs of a human body may be formed. . The elastic support body 20 is disposed between the support member 22 and a lower portion that constitutes the back side of the body portion 14, and the support member 22 is supported by the body portion 14 via the elastic support body 20. As a result, the support member 22 is allowed to be vertically displaced relative to the body portion 14 by the elastic deformation of the elastic support body 20. The entire support member 22 is exposed to the outside through the opening 18 on the upper side of the body portion 14.

A surface pressure distribution sensor 24 is superposed on the upper surface of the support member 22. The surface pressure distribution sensor 24 is in the form of a thin sheet having flexibility, and as shown in FIGS. 4 and 5, a first electrode layer sheet 28 is superposed on one surface of the dielectric layer 26. At the same time, the second electrode layer sheet 30 is laminated on the other surface of the dielectric layer 26. In FIGS. 2 and 5, the thickness of the surface pressure distribution sensor 24 is exaggeratedly shown for ease of viewing.

The dielectric layer 26 is formed of an electrically insulating elastomer such as rubber or resin to be a sheet having elasticity or flexibility, and is elastically deformable so that it can be easily deformed particularly in the thickness direction. It is supposed to be deformable. Examples of the material for forming the dielectric layer 26 include silicone rubber, acrylonitrile-butadiene copolymer rubber, acrylic rubber, epichlorohydrin rubber, chlorosulfonated polyethylene, chlorinated polyethylene, urethane rubber, polyethylene resin, polypropylene resin, polyurethane resin. Polystyrene resin, polyvinyl chloride-polyvinylidene chloride copolymer, ethylene-acetic acid copolymer, etc. are preferably adopted. Further, the dielectric layer 26 may be a foam, and the foam is not necessarily limited to a foam that exhibits a homogeneous phase by the closed cells as long as the necessary dielectric constant and flexibility are secured, and for example, a continuous foam. It may have a non-uniform phase due to the formation of bubbles. The thickness and forming material of the dielectric layer 26 are appropriately set according to the relative permittivity and flexibility required in the pressure detection unit 36 described later.

On the other hand, the first electrode layer sheet 28 is provided with a first electrode X as a first electrode layer extending in the vertical direction in FIG. A second electrode Y as a second electrode layer extending in the left-right direction in 4 is provided. Each of the first electrode X and the second electrode Y has a thin longitudinal strip shape and is provided so as to extend in a direction substantially orthogonal to each other. In the present embodiment, the 25 first electrodes X are arranged in parallel in the length direction of the x-axis (the coordinate axis extending in the left-right direction in FIG. 4) and are arranged in parallel with each other. X are referred to as 01X to 25X in order from the left side in FIG. Similarly, in the present embodiment, since the 28 second electrodes Y are arranged in parallel in the length direction of the y-axis (coordinate axis extending in the vertical direction in FIG. 4), they are arranged in parallel with each other. The second electrodes Y are referred to as 01Y to 28Y in order from the upper side in FIG.

Further, the first electrode X and the second electrode Y are formed of, for example, a flexible conductive elastomer obtained by adding a conductive filler (for example, metal powder such as carbon black or silver powder) to an elastomer such as rubber or resin. , Easily deformable. The elastomer used to form the first electrode X and the second electrode Y is, for example, silicone rubber, ethylene-propylene copolymer rubber, natural rubber, styrene-butadiene copolymer rubber, acrylonitrile-butadiene copolymer rubber. , Acrylic rubber, epichlorohydrin rubber, chlorosulfonated polyethylene, chlorinated polyethylene, urethane rubber, polyester resin, polyether urethane resin, polycarbonate urethane resin, vinyl chloride-vinyl acetate copolymer, phenol resin, acrylic resin, polyamideimide Resins, polyamide resins, nitrocellulose, modified celluloses and the like are preferably adopted.

The first and second electrode layer sheets 28 and 30 are formed of, for example, the same elastomer as the first electrodes 01X to 25X and the second electrodes 01Y to 28Y. The first and second electrode layer sheets 28 and 30 of this embodiment are transparent or translucent in order to facilitate understanding of the structure of the surface pressure distribution sensor 24. Although the electrodes 01X to 25X and the second electrodes 01Y to 28Y are illustrated, the first and second electrode layer sheets 28 and 30 are not necessarily limited to transparent or semitransparent.

Further, the first and second electrode layer sheets 28 and 30 extend to the outside of the area where the first and second electrodes X and Y are arranged, and the first and second electrode layer sheets 28 and 30 are provided. Outside the first and second electrodes X and Y, the first wiring 32 and the second wiring 34 are formed of a conductive material. Then, the first wiring 32 and the first electrode X are integrally and continuously connected, the first electrode X and the first wiring 32 are electrically connected, and the second wiring 34 is the second wiring 34. The second electrode Y and the second wiring 34 are electrically connected to the electrode Y integrally and continuously. The first and second electrodes X and Y and the first and second wirings 32 and 34 are, for example, wirings printed on the surfaces of the first and second electrode layer sheets 28 and 30 with conductive ink. Can be obtained as a pattern. Further, 25 first wirings 32 are provided and connected to each one of the first electrodes 01X to 25X, and 28 second wirings 34 are provided, and the second wirings 34 are provided. It is connected to each of the electrodes 01Y to 28Y.

Then, the first electrode layer sheet 28 is superposed on one surface of the dielectric layer 26, so that the first electrodes 01X to 25X are arranged between the dielectric layer 26 and the first electrode layer sheet 28. Thus, the first electrodes 01X to 25X are superposed on one surface of the dielectric layer 26. On the other hand, the second electrode layer sheet 30 is laminated on the other surface of the dielectric layer 26, so that the second electrodes 01Y to 28Y are arranged between the dielectric layer 26 and the second electrode layer sheet 30. The second electrodes 01Y to 28Y are superposed on the other surface of the dielectric layer 26. The first and second electrode layer sheets 28 and 30 are provided with the first electrodes 01X to 25X and the second electrodes 01Y to 28Y, and the formation of first and second wirings 32 and 34 described later. The outer peripheral portions outside the region are fixed to each other by welding, adhesion, fixing with double-sided tape, or the like.

As a result, the first electrodes 01X to 25X and the second electrodes 01Y to 28Y are arranged so as to cross each other so as to be substantially orthogonal to each other with the dielectric layer 26 in between, and the first electrodes 01X to 25X are arranged. Capacitors are respectively formed at the intersecting facing portions of the second electrodes 01Y to 28Y. The pressure detection unit 36 is configured by this capacitor, and the acting pressure on the pressure detection unit 36 can be detected based on the change in the electrostatic capacitance of the pressure detection unit 36. That is, when downward pressure (downward in FIG. 5) is applied to the pressure detection unit 36, the dielectric layer 26 is compressed and deformed in the pressure detection unit 36 to which the pressure is applied, thereby forming the pressure detection unit 36. Since the facing distance between the first electrode X and the second electrode Y becomes short, the electrostatic capacitance changes in the pressure detection unit 36. It is possible to detect the pressure exerted on each pressure detection unit 36 by detecting the change in the capacitance in each pressure detection unit 36 using a controller 44 (described later) that is an electrical control device. It is said that.

Therefore, the 700 intersecting facing portions (pressure detecting portion 36) of the first electrodes 01X to 25X and the second electrodes 01Y to 28Y each function as a capacitance type pressure detecting element (cell), The 700 pressure detection units 36 are arranged two-dimensionally to form the electrostatic capacitance type surface pressure distribution sensor 24 that detects the surface pressure distribution. In FIG. 4, the pressure detection unit 36 is hatched for the sake of clarity.

Moreover, the area of the pressure-sensitive portion where the 700 pressure detection portions 36 are arranged is set to be equal to or larger than the average area of the chest compression portion of the human palm. That is, it is set to be equal to or larger than the average area (for example, about 900 mm ² ) of the ball of the foot (the bulge of the palm at the base of the thumb), which is a substantially chest compression portion of a human palm, and more preferably, It is considered to be more than the average area of the carpal part of the human palm. Thereby, it is possible to sufficiently cope with the displacement of the compression position. In addition, more preferably, it is possible to confirm whether or not the pressure is applied by an appropriate portion of the palm by setting the area to be equal to or larger than the average area of the entire palm of the person.

In the present embodiment, the region surrounded by a thick solid line in FIG. 3 is the proper compression region 38, and 42 pressure detection units 36 are arranged in the proper compression region 38 to provide the proper compression region. The area of 38 is approximately 900 mm ² . Further, around the appropriate compression region 38, a detectable region 40 composed of the pressure detection unit 36 in a region that does not correspond to the appropriate compression region 38 spreads, and the area of this detectable region 40 is suitable. Is 1.7 times or more, and more preferably 3 times or more, the area of the appropriate compression region 38. As a result, in the present embodiment, the compression detection region 42, which is a combination of the proper compression region 38 and the detectable region 40, is set to be equal to or larger than the average area of the entire palm of the human, and the middle part of the sternum (sternal body of the adult) ) It is considered to be more than the average area of the lower half. The average area of the lower half of the sternum of an adult is the average area of the lower half of the sternum in the set of adults set based on specific conditions, for example, height, weight, age, sex, race, etc. The average area of the lower half of the sternum can be measured or estimated by analogy from the physique of the adult population specified by at least one condition. Further, the appropriate compression region 38 is set at an appropriate position on the precordial region of the training doll 10 based on CPR guidelines or the like. Generally, for example, it is set in the central part of the precordial region such as above the two fingers with respect to a sword-like projection 58 described later.

Also, an insulator layer may be overlaid on the second electrode layer sheet 30 to reduce noise that adversely affects the detection result. The insulator layer is made of, for example, a soft synthetic resin or a rubber elastic body having electrical insulation in addition to flexibility and elasticity, and has a sheet shape or a plate shape, and is grounded. It is desirable to have a noise guard electrode. According to this, it is possible to reduce the influence of the conductivity of the trainee's hand on the detection result of the surface pressure distribution sensor 24. When the noise guard electrode is provided, it is desirable to provide an electrically insulating spacer layer between it and the second electrode layer sheet 30. Thereby, the distance between the second electrode layer sheet 30 and the noise guard electrode is set sufficiently large, and the influence of the capacitance of the capacitor having the second electrode layer sheet 30 and the noise guard electrode on the detection result. Can be reduced.

The first wiring 32 connected to the first electrode X and the second wiring 34 connected to the second electrode Y are electrically connected to the controller 44. The controller 44 includes, for example, as shown in FIG. 3, a power supply circuit 46 for supplying an operating voltage and a detection circuit 48 for electrostatic capacitance detection, and is connected to a computer 50. The power supply circuit 46 is adapted to selectively supply power to the first electrodes 01X to 25X and the second electrodes 01Y to 28Y, and is controlled by a central processing unit (CPU) (not shown) of the computer 50 to control capacitors. A periodic waveform voltage is applied as a voltage for measurement to each of the 700 intersections constituting the above.

Then, the detection signal of the electrostatic capacitance detected under the action of the voltage is sequentially detected by the detection circuit 48, and the detected value is stored in a RAM (Random Access Memory) (not shown) of the computer 50. The detection of the capacitance by the detection circuit 48 is performed by obtaining the capacitance value using the impedance obtained from the current value, for example.

Further, in the ROM (Read Only Memory) (not shown) of the computer 50, the characteristics of the capacitor formed at each intersecting facing portion (pressure detecting portion 36) of the first electrodes 01X to 25X and the second electrodes 01Y to 28Y. Data is stored, and the compression force, which is the external force exerted on each pressure detection unit 36, is calculated by the CPU of the computer 50 based on the detected value of the capacitance based on the characteristic data. Therefore, by scanning the electrostatic capacities of the 700 pressure detection units 36, the pressure acting on each pressure detection unit 36 can be detected separately, and the two-dimensional pressure distribution is detected as a whole. It is possible.

Incidentally, preferably, the first and second wirings 32 and 34 are detachably connected to the controller 44, and the controller 44 is detachably connected to the computer 50.

The surface pressure distribution sensor 24 having such a structure is overlapped so as to cover the upper surface of the support member 22 and detects the pressure exerted on the support member 22. That is, as shown in FIG. 3, the surface pressure distribution sensor 24 is provided so as to cover almost the entire upper surface of the support member 22, and in the present embodiment, is configured to include the second electrodes 27Y and 28Y. The 650 pressure detection units 36 except the pressure detection unit 36 are arranged on the support member 22. In this way, by overlapping the surface pressure distribution sensor 24 on the upper surface of the support member 22, the surface pressure distribution sensor 24 is indirectly supported by the elastic support body 20 and corresponds to the precordial region of the training doll 10. It is held in the position. In other words, the support member 22 is disposed between the elastic support body 20 and the surface pressure distribution sensor 24, and the surface pressure distribution sensor 24 is superposed on and supported by the support member 22. Note that, as shown in FIG. 2, in the surface pressure distribution sensor 24, the right end portion of the second electrode layer sheet 30 on which the second wiring 34 is formed is bent downward.

Further, in the present embodiment, the surface pressure distribution sensor 24 is positioned with respect to the support member 22 by being fixed with the double-sided tape 52 (see FIG. 2), etc., so that the surface pressure distribution sensor 24 is positioned in the body portion 14. Positioning means for positioning in the plane direction (direction orthogonal to the vertical direction in FIG. 2) is configured. By providing such a positioning means, the surface pressure distribution sensor 24 is held in a correct position with respect to the torso portion 14, and an appropriate compression region 38 in the surface pressure distribution sensor 24 is appropriately located in the precordial region of the torso portion 14. It can be placed in any position. The positioning means is not limited to fixing with the double-sided tape 52, and various fixing means such as adhesion, mechanical locking, fixing with a binding band, etc. can be adopted.

In the present embodiment, as described above, at least a part of the 50 pressure detection units 36 configured to include the second electrodes 27Y and 28Y is arranged at a position off the upper surface of the support member 22. The compression detection region 42 where the pressure effectively acts during compression is not configured. However, for example, all the pressure detectors 36 may be arranged on the support member 22 to form the compression detection region 42, or only the smaller pressure detectors 36 may be arranged on the support member 22. Thus, the compression detection region 42 may be configured by the pressure detection unit 36 having a smaller number.

Further, the controller 44 connected to the surface pressure distribution sensor 24 is housed in the housing space 16 of the training doll 10 and is arranged at a position deviated from the support member 22 in the vertical projection. In the present embodiment, the body part 14 of the training doll 10 is housed at the end opposite to the head part 12. However, the controller 44 may be arranged outside the training doll 10 as long as it is connected to the surface pressure distribution sensor 24.

Further, the cover body 54 is attached to the body portion 14 of the training doll 10 in a state where the surface pressure distribution sensor 24 is superposed on the support member 22. The cover 54 is in the form of a sheet, and is made of a flexible and elastic elastomer such as rubber or synthetic resin. Furthermore, more specifically, a display imitating the surface of the precordial region of the human body is provided on the upper surface of the cover body 54 by, for example, unevenness or printing, and in the present embodiment, the rib arch 56 and the sword are used. The protrusions 58, clavicle 60, etc. are printed. Based on the positions of the rib arch 56, the xiphoid process 58, and the clavicle 60, it is possible to specify an appropriate position for chest compression in the chest of the training doll 10. It is said that. In addition to the rib arch 56, the xiphoid process 58, and the clavicle 60 described above, a papilla or the like may be adopted as the structure of the precordial surface displayed on the upper surface of the cover body 54.

Then, in the cover body 54, the locking pin 62 provided on the side surface of the body portion 14 is inserted into an insertion hole (not shown) provided in the outer peripheral end portion, and the head of the locking pin 62 is inserted into the insertion hole. It is attached so as to cover the front chest side surface (upper surface) of the body portion 14 by being locked to the cover body 54 at the peripheral edge portion thereof. As a result, as shown in FIGS. 1 and 2, the support member 22 attached to the body portion 14 and the front chest side of the surface pressure distribution sensor 24 are covered with the cover body 54 and cannot be seen from the outside. The positions of 22 and the surface pressure distribution sensor 24 are not visually specified from the outside.

In particular, since the cover body 54 of the present embodiment has a structure that covers the front chest side of the body portion 14 almost entirely, the support member 22 and the surface pressure distribution sensor 24 are arranged from the position of the cover body 54. Since the positions are not specified, it is more difficult to visually specify the positions where the support member 22 and the surface pressure distribution sensor 24 are arranged.

Further, the cover body 54 mounted on the body portion 14 is arranged in contact with the surface pressure distribution sensor 24 in the vertical direction, and in particular, the pressure sensitive portion on which the pressure detection portion 36 is arranged is substantially the whole. Overlaid over the cover body 54 in a contact state. As a result, in the training doll 10 of the present embodiment, the cover body 54, the surface pressure distribution sensor 24, the support member 22, the elastic support body 20, and the back portion of the body portion 14 are overlapped with each other without a space therebetween. Has been done.

The training doll 10 having such a structure is used in a state where it is installed on a floor, a stretcher, or the like with the vertical direction in FIG. For chest compressions, the pressure is measured by the surface pressure distribution sensor 24.

When the trainee presses the support member 22 and the surface pressure distribution sensor 24 downward, the elastic support body 20 disposed between the support member 22 and the back of the body 14 is compressed in the vertical direction, and the support member is supported. 22 and the surface pressure distribution sensor 24 are pushed downward. As a result, the trainee can feel resistance (repulsion) based on the elasticity of the elastic support 20 and obtain a feeling similar to that when an actual human body is subjected to chest compression. In particular, since the hard support member 22 on which the surface pressure distribution sensor 24 is superposed is adopted, the support member 22 functions so as to imitate the front part of the thorax of the human body and the elastic support body 20 is elastically deformed. Since it is displaced up and down in response to this, it is possible to give the trainee a feeling of being close to chest compression on the human body, and to carry out training closer to that of actual life-saving resuscitation.

Further, in the surface pressure distribution sensor 24, since the dielectric layer 26 is vertically compressed between the support member 22 and the hand of the trainee, the first electrode X is compressed in the portion where the dielectric layer 26 is compressed. And the second electrode Y approach each other in the vertical direction. As a result, in the pressure detection unit 36 in which the first electrode X and the second electrode Y are close to each other, the capacitance is changed due to the approach of the first electrode X and the second electrode Y. As a result, the surface pressure distribution sensor 24 detects the magnitude and position of the pressure exerted on the training doll 10 by the chest pressure of the trainee. Since the surface pressure distribution sensor 24 of the present embodiment is not directly supported by the elastic support body 20 but is supported by the hard support member 22, the surface pressure distribution sensor 24 is locally supported by the elastic support body 20. The surface pressure distribution sensor 24 is unlikely to be bent due to the deformation, and the change in the electrostatic capacitance according to the input is stably generated.

Based on the detection result of the surface pressure distribution sensor 24, the computer 50, which is a calculation device, causes the pressing depth during chest compression, the pressing depth during recoil, the center position of pressure action, the rhythm of chest compression in one cycle. Calculate the compression time ratio (duty cycle), etc.

Then, by displaying each of the calculated data described above on the monitor 64 of the computer 50 as a display device, the trainee, the training instructor, and the like grasp the situation and effects of the training by looking at the monitor 64. be able to. Thereby, the training result based on the detection result of the surface pressure distribution sensor 24 can be easily understood by the trainee, the training instructor, or the like in real time after the training or during the training. The data displayed on the monitor 64 of the computer 50 is not particularly limited, and all or part of the above-exemplified data may be displayed, or data other than the above may be displayed. . Specifically, as shown in FIG. 6, it is possible to display the pressure distribution in different colors and directly display the action center position of the pressure on a coordinate plane by a circle or the like. It is also possible to display only whether or not the position of the action center of the pressure was appropriate, using characters or symbols. Note that in FIG. 6, 25 squares are arranged side by side and 28 squares are arranged side by side, and these squares correspond to each one of the pressure detection units 36 in the surface pressure distribution sensor 24. Further, in the display of FIG. 6, the pressure distribution is shown in a color closer to red as the pressure becomes larger, and also closer to blue as the pressure becomes smaller, showing the action center position of the pressure. The pressure is larger on the lower side and the left side than the circle in the figure.

Here, in the training doll 10, since the front surface of the body portion 14 is covered with the cover body 54, the trainee looks at the position where the surface pressure distribution sensor 24 is arranged, and thereby the proper position for chest compression can be determined. It is possible to prevent the trainee from being aware of it. Therefore, the trainee specifies the position where the chest compression is applied based on the structure of the human body provided on the surface of the cover body 54, that is, the positions of the rib arch 56, the xiphoid process 58, and the clavicle 60 in this embodiment. It is necessary to improve the training effect by carrying out the training according to the resuscitation method using actual chest compressions. In particular, in the present embodiment, since the cover body 54 is provided so as to cover the front surface of the torso portion 14 almost entirely, the trainee specifies the appropriate position of chest compression by the position of the cover body 54. You can prevent it.

Also, the surface pressure distribution sensor 24 is a sensor that detects the pressure exerted by chest compressions. This makes it possible to specify not only the magnitude of the pressure exerted by the chest compression but also the position where the chest compression is applied, such as the surface pressure distribution and the action center position of the pressure. By adopting such a surface pressure distribution sensor 24 in combination with the cover body 54, the position of the chest compression specified by the trainee based on the structure of the front of the chest drawn on the cover body 54 can be determined as an appropriate chest compression position. It is possible to know whether or not the positions match, how much they are deviated, and in which direction they are deviated. Therefore, by performing the chest compression training using the training doll 10, it is possible to efficiently improve the skill of identifying the proper position of the chest compression based on the structure of the front surface of the chest of the human body.

Further, by adopting the surface pressure distribution sensor 24, it is possible to detect the compression position and the magnitude of the compression force by one sensor, and compared with the case where separate sensors are provided, the structure Can be simplified.

In the present embodiment, the surface pressure distribution sensor 24 and the support member 22 that supports the surface pressure distribution sensor 24 are provided in a wide area that constitutes substantially the entire front chest and a part of the abdomen of the body 14. Therefore, even when a trainee who has insufficient knowledge about chest compressions compresses a position that deviates significantly from the proper position, the pressure can be effectively measured.

Further, since the cover body 54 is superposed on almost the entire compression detection region 42 of the surface pressure distribution sensor 24 located on the support member 22 in a state of being in contact therewith without interposing a space, the cover body 54. The compressive force input to the surface of the is efficiently transmitted to the surface pressure distribution sensor 24. As a result, the accuracy of pressure detection can be improved during chest compression, and compression can be effectively detected even when the compression depth is particularly small.

Further, since the surface pressure distribution sensor 24 is in the form of a flexible thin sheet, it can be arranged in a narrow space, and the surface pressure distribution sensor 24 is superposed on the cover body 54 in an abutting state. However, it is difficult for the trainee to perceive the difference in the tactile sensation depending on the presence or absence of the surface pressure distribution sensor 24, and more effectively prevent the proper position of chest compression from being specified by the arrangement position of the surface pressure distribution sensor 24. You can

Moreover, since the surface pressure distribution sensor 24 is a capacitance type sensor, the pressure exerted by chest compression can be accurately detected.

The compression detection region 42 of the surface pressure distribution sensor 24 has an area equal to or larger than the average area of the middle part of the sternum (sternal body) of an adult, and the compression detection region 42 is wider than the proper compression region 38 for chest compression. It is set by area. Moreover, the compression detection region 42 of the surface pressure distribution sensor 24 includes an appropriate compression region 38 and a detectable region 40 having an area that is 1.7 times or more the circumference of the appropriate compression region 38. Therefore, not only whether or not the proper compression region 38 is being compressed, but also when the position outside the proper compression region 38 is compressed, the pressure can be detected by the detectable region 40 having a sufficient area. As a result, various parameters such as the compression depth can be obtained, and the degree to which the compression position deviates from the proper compression region 38 can be grasped.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited by the specific description thereof. For example, the specific structure of the surface pressure distribution sensor can be appropriately changed. For example, the number and shape of the electrodes and the pressure detection unit are not particularly limited, and a spot-shaped electrode such as a circle may be adopted. it can. Further, the surface pressure distribution sensor is not limited to the capacitance type sensor, and another detection method such as an electric resistance type can be adopted. Further, the surface pressure distribution sensor is preferably in the form of a flexible sheet as in the above embodiment, but even a sensor having a large thickness or a hard sensor may be used as long as it does not interfere with the chest compression training. .

The cover body 54 is preferably provided so as to cover substantially the entire front surface of the body portion 14, but may be provided so as to partially cover the front surface of the body portion 14, for example. That is, it suffices that it is provided so as to cover the opening 18 of the body portion 14, and the surface of the body portion 14 may be exposed around the cover body 54. In this case, for example, by covering the exposed surface of the body portion 14 with the same material as the cover body 54 or coloring the same with the cover body 54, the surface of the body portion 14 and the cover body 54 are separated from each other. It is desirable to make the boundaries less visible.

In the above-described embodiment, an elastic body such as rubber or synthetic resin is exemplified as the elastic support body, but the elastic support body is configured by the coil spring 72 as in the chest compression training doll 70 shown in FIG. 7, for example. You can also According to this, even if the elastic support is used for a long period of time, it is difficult for the elastic support to suffer from fatigue (change in vertical dimension due to deterioration, change in spring, etc.), and the detection accuracy can be stably maintained. Note that, in FIG. 7, the thickness dimension of the surface pressure distribution sensor 24 is shown large similarly to FIG. 2.

Further, in the above-described embodiment, the surface pressure distribution sensor 24 is separate from the support member 22 and the cover body 54, and they are superposed so as to be sandwiched between the support member 22 and the cover body 54. The surface pressure distribution sensor may be integrally provided on at least one of the support member 22 and the cover body 54. That is, in the chest compression training doll 80 shown in FIG. 8, the first electrodes 01X to 05X forming the surface pressure distribution sensor 24 are integrally formed on the upper surface of the support member 22, and the surface pressure distribution sensor 24 is also formed. The second electrodes 01Y to 05Y forming the above are integrally formed on the lower surface of the cover body 54 (the upper surface in FIG. 8 since the cover body 54 is shown in the upside-down state in FIG. 8). Has been done. Then, the support member 22 having the first electrodes 01X to 05X and the cover member 54 having the second electrodes 01Y to 05Y, with the dielectric layer 26 as a separate body interposed therebetween, are used as the support member. By overlapping 22 and the cover body 54, the first electrode X and the second electrode Y are disposed so as to cross and face each other with the dielectric layer 26 in between, and the support member 22 and the cover body 54 are provided with a surface. The pressure distribution sensor 24 is integrally configured. As described above, when the surface pressure distribution sensor 24 is integrally formed with the support member 22 and the cover body 54, the surface pressure distribution sensor 24 is not displaced from an appropriate position with respect to the support member 22 and the cover body 54. A structure and a process for mutually positioning the surface pressure distribution sensor 24, the support member 22, and the cover body 54 are unnecessary.

In the embodiment of FIG. 8, the structure in which the surface pressure distribution sensor 24 is provided integrally with both the support member 22 and the cover body 54 has been described. However, for example, the surface pressure distribution sensor 24 is provided as the support member 22. It may be integrally provided with either one of the cover body 54.

Note that, as shown in FIG. 8, the chest compression training doll is not necessarily limited to the one having the head 12, and may have the body 14. On the other hand, the present invention is also applicable to a chest compression training doll provided with arms and a lower body.

Further, in the above-described embodiment, an example in which the monitor 64 as a display device is provided independently of the chest compression training doll 10 is shown. However, for example, the display device is incorporated in the chest compression training doll. You can also That is, a monitor serving as a display device may be provided on the head, torso, cover, support member of the chest compression training doll, and information such as the compression position may be displayed on the monitor. In addition, the arithmetic unit configured by the computer 50 in the above-described embodiment may be built in the chest compression training doll 10. In addition, the display device and the arithmetic device may be connected to the chest compression training doll 10 (the surface pressure distribution sensor 24, the controller 44, etc.) by wire or wirelessly.

10, 70, 80: Doll for chest compression training, 14: Body, 20: Elastic support, 22: Support member, 24: Surface pressure distribution sensor, 26: Dielectric layer, 38: Proper compression region, 40: Detectable area, 42: compression detection area, 52: double-sided tape (positioning means), 54: cover body, 64: monitor (display device), 72: coil spring (elastic support body), X: first electrode (first) One electrode layer), Y: second electrode (second electrode layer)

Claims (12)

A chest compression training doll provided with a torso subject to compression by a trainee during chest compression training,
A surface pressure distribution sensor that detects the distribution of pressure acting on the torso during chest compressions is elastically supported by an elastic support and arranged on the anterior chest of the torso,
A chest compression training doll, wherein a cover imitating the surface of the front chest of the human body is provided so as to cover the surface of the front pressure distribution sensor on the front chest side. The doll for chest compression training according to claim 1, wherein the surface pressure distribution sensor is in the form of a flexible sheet. The surface pressure distribution sensor has a structure in which a plurality of first electrode layers and a plurality of second electrode layers extending in the direction opposite to each other are laminated on each of the front and back surfaces of the dielectric layer. The capacitance type sensor according to claim 2, wherein the capacitance type sensor detects pressure based on a change in capacitance with a change in a facing distance at each intersecting facing portion of the first electrode layer and the second electrode layer. Chest compression training doll. The chest compression training according to claim 2 or 3, wherein the surface pressure distribution sensor includes an appropriate compression region and a detectable region having an area of 1.7 times or more around the appropriate compression region. Doll. The chest compression training doll according to any one of claims 2 to 4, wherein the surface pressure distribution sensor includes a compression detection region having an area equal to or larger than the average area of the lower half of the sternum of an adult. The chest compression training doll according to any one of claims 1 to 5, wherein the cover body is provided so as to cover substantially the entire front chest side of the body. 7. A hard support member is disposed between the elastic support and the surface pressure distribution sensor, and the surface pressure distribution sensor is superposed on and supported by the support member. The chest compression training doll according to the item 1. The chest compression training doll according to claim 7, wherein the surface pressure distribution sensor is provided integrally with the support member. The chest compression training doll according to any one of claims 1 to 8, wherein the surface pressure distribution sensor is integrally provided on the cover body. The doll for chest compression training according to any one of claims 1 to 9, further comprising positioning means for positioning the surface pressure distribution sensor with respect to the torso in a surface direction. The chest compression training doll according to any one of claims 1 to 10, to which a display device for displaying information based on a detection result of the surface pressure distribution sensor is connected. The chest compression training doll according to any one of claims 1 to 11, wherein the surface pressure distribution sensor and the cover body are overlapped in a contact state.

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