JP2013153847A - Cardiac massage support device and cardiac massage supporting computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cardiac massage support device capable of being easily used in a lifesaving practice, and allowing execution of a treatment without giving a uncomfortable feeling in the actual cardiac massage at a lifesaving site.SOLUTION: A cardiac massage support device 1 for supporting a proper treatment for cardiac massage includes: a video camera 4 provided in a position detector 5 fixed to a hand of a cardiac massage treating person P2 and capturing images of at least three markers; and a main device 2 connected to the video camera 4 and displaying movement of a measuring point representing a position of the position detector 5 based on the change of positions of the respective markers captured by the video camera 4. The cardiac massage support device 1 at least includes a measuring point determining means for determining the position of the measuring point, a measuring point tracing means for tracing the change of position of the measuring point, and a display processing means for displaying the change of position of the measuring point on a monitor. This invention also provides a cardiac massage supporting computer program which is readable and executable in the device 1.

Description

  The present invention relates to a cardiac massage support device and a computer program for cardiac massage support.

  Providing a rapid and correct heart massage to a person who has suddenly collapsed due to an abnormality in the heart or brain is an extremely important first aid for reducing the lifesaving and post-survival sequelae. For example, if there is a patient who has fallen at home, the person who has been at the location until the ambulance arrives at the location of the patient needs to perform a heart massage in the correct manner. In addition, even after the patient is put on the ambulance, an emergency medical technician or the like often has to continue the heart massage while delivering the patient to the hospital. However, if you have a heart massage training and have a lot of experience, you can do heart massage with the right technique, but for life-experienced or ordinary people who have little experience, do heart massage with the right technique. Is extremely difficult.

  In view of the current situation, heart massage classes are regularly held not only for lifesaving technicians but also for general people. In such a class, a human body model for heart massage is usually prepared, and a lifesaving technician serves as an instructor to teach students correct heart massage. As such a human body model, for example, one having a member that can elastically expand and contract inside the chest is known (see Patent Document 1 and Patent Document 2).

  Also, as a support device not only for training but also for actually saving a person, when a compression unit is placed at the heart position and the patient's chest is pushed through the compression unit from above, the inside of the compression unit There is also known an apparatus that evaluates the state of heart massage by using an acceleration sensor and feeds back to teach a lifesaving person a correct method (see Patent Document 3).

Japanese Patent Laid-Open No. 06-012013 Japanese National Patent Publication No. 05-504631 Special table 2008-529714

  However, the above known devices have the following drawbacks. When lifesaving training is performed using a human body model, there are problems that the human body model is expensive and that at least one experienced lifesaver is indispensable. For this reason, in practice, the frequency and location of training must be reduced, and it is difficult to spread heart massage using the correct technique. In addition, when using a support device using a compression unit at a training or lifesaving site, it is preferable in that a heart massage is performed while receiving support by voice or the like, but the device is placed between the chest of a patient and the palm of a lifesaving technician. Since the heart massage is performed with the fingers interposed, there is a problem that the burden on the palm is too great and the heart massage cannot be performed for a long time. In addition, there is a problem in that a heart massage is performed by directly placing the palm of the patient on the chest of a patient and performing a heart massage by interposing a device in terms of the sense of a lifesaving technician.

  The present invention has been made to solve such a problem, and can be used for lifesaving training easily, and can execute a measure that does not cause a sense of incongruity with an actual heart massage even in the lifesaving field, and a computer program used therefor The purpose is to provide.

  One form of this invention for solving the said objective is a cardiac massage assistance apparatus for assisting the correct treatment of cardiac massage, Comprising: At least 3 provided in the position detector fixed to the operator of the cardiac massage practitioner A video camera that captures two markers, and a main device that is connected to the video camera and displays the movement of a measurement point that represents the position of the position detector based on a change in the position of each marker imaged by the video camera And measuring point determination means for determining the position of the measurement point based on each position of each marker in the three-dimensional coordinates in the field of view of the video camera, and tracking the change in the position of the measurement point A cardiac massage assisting device comprising at least measurement point tracking means and display processing means for displaying a change in the position of the measurement point on a monitor.

  According to another aspect of the present invention, the cardiac massage assisting apparatus further determines the position of the measurement point based on the position of the reflected light in which the marker is a reflection marker and the measurement point determination means reflects the light from the light emitting means by the reflection marker. It is.

  In another embodiment of the present invention, the calculation data calculated from the change in the position of the measurement point is compared with the data of the acceptable standard stored in the memory, and whether the calculated data is in the acceptable standard. The cardiac massage assisting device further includes an evaluation unit that evaluates whether or not, and an alarm output processing unit that outputs an alarm when the calculated data is out of an acceptable standard as a result of the evaluation by the evaluation unit.

  In another embodiment of the present invention, the evaluation unit includes a number evaluation unit that evaluates the number of round trips of the measurement point within a predetermined time by comparing the number of round trips of the measurement point with the allowable number of times as an acceptance reference. When it is less than this, it is a cardiac massage assisting device that outputs and processes an alarm that assists the alarm output processing means to achieve an allowable number of times.

  According to another aspect of the present invention, the evaluation unit includes a compression length evaluation unit that evaluates the position of the lowest point of the forward path of the measurement point within a predetermined time by comparing with the range of the allowable depth as an allowable reference. This is a cardiac massage assisting device that outputs and processes an alarm that assists the alarm output processing means to fall within the allowable depth range when the lowest point position of the forward path of the point is not within the allowable depth range.

  According to another aspect of the present invention, the evaluation means includes a ratio of a forward time of a measurement point within a predetermined time or a speed of the forward path and a time of a return path following the forward path or a speed of the return path as a permissible reference range. Cardiac massage support that includes a round-trip time / speed evaluation means that evaluates in comparison with an alarm, and outputs an alarm that assists the alarm output processing means to fall within the allowable ratio range when the ratio is not within the allowable ratio range Device.

  Another aspect of the present invention includes a trajectory evaluation unit that evaluates the evaluation unit by comparing a trajectory of a measurement point within a predetermined time with an allowable zone as an allowable reference, and when the trajectory is out of the allowable zone, It is a cardiac massage assisting device that outputs and processes an alarm that assists an alarm output processing means to enter an allowable zone.

  According to another aspect of the present invention, there is further provided a cardiac massage assisting device that displays an acceptable zone on a monitor at least during tracking of a measurement point by a display processing means.

  In another embodiment of the present invention, the evaluation means compares whether or not the number of round trips of the measurement point within a predetermined period is smaller than the round trip count of the measurement point within a predetermined period prior to the predetermined period as an acceptance criterion. And a pace evaluation means for evaluating, and when the number of reciprocations within a predetermined period is smaller than the number of reciprocations within a predetermined period, an alarm output processing means outputs an alarm to assist in increasing the number of reciprocations. This is a cardiac massage support device.

  One embodiment of the present invention is a computer program for cardiac massage support that can be read and executed in a cardiac massage support apparatus for supporting a correct treatment of cardiac massage, and hardware that constitutes the cardiac massage support apparatus, The position of the measurement point is determined based on each position of each marker in the three-dimensional coordinates in the field of view of the video camera that images at least three markers provided in the position detection means fixed to the hand of the heart massage practitioner. It is a computer program for cardiac massage support that functions as a measurement point determination unit, a measurement point tracking unit that tracks a change in the position of the measurement point, and a display processing unit that displays the change in the position of the measurement point on a monitor.

  In another embodiment of the present invention, the hardware constituting the cardiac massage assisting device is further compared with calculation data calculated from a change in the position of the measurement point and tolerance reference data stored in the memory. A cardiac massage that functions as an alarm output processing means for outputting an alarm when the calculated data deviates from the acceptable standard as a result of the evaluation by the evaluation means, and an evaluation means for evaluating whether the calculated data is within the acceptable standard It is a computer program for support.

  In another embodiment of the present invention, the evaluation unit includes a number evaluation unit that evaluates the number of round trips of the measurement point within a predetermined time by comparing the number of round trips of the measurement point with the allowable number of times as an acceptance reference. If not, the computer program for assisting cardiac massage that outputs and processes an alarm for assisting the alarm output processing means to achieve an allowable number of times.

  According to another aspect of the present invention, the evaluation unit includes a compression length evaluation unit that evaluates the position of the lowest point of the forward path of the measurement point within a predetermined time by comparing with the range of the allowable depth as an allowable reference. This is a computer program for cardiac massage support that outputs an alarm for assisting the alarm output processing means to fall within the allowable depth range when the lowest point position of the forward path of the point is not within the allowable depth range.

  According to another aspect of the present invention, the evaluation means includes a ratio of a forward time of a measurement point within a predetermined time or a speed of the forward path and a time of a return path following the forward path or a speed of the return path as a permissible reference range. Cardiac massage support that includes a round-trip time / speed evaluation means that evaluates in comparison with an alarm, and outputs an alarm that assists the alarm output processing means to fall within the allowable ratio range when the ratio is not within the allowable ratio range Computer program.

  According to another aspect of the present invention, the evaluation means includes a trajectory evaluation means for evaluating the trajectory of the measurement point within a predetermined time by comparing with a permissible zone as a permissible reference, and the trajectory is out of the permissible zone. The computer program for assisting cardiac massage for outputting an alarm for assisting the user to enter the permissible zone by the alarm output processing means.

  According to another aspect of the present invention, there is provided a computer program for assisting cardiac massage, wherein the display processing means displays the tolerance zone on the monitor at least during tracking of the measurement point.

  In another embodiment of the present invention, the evaluation means compares whether or not the number of round trips of the measurement point within a predetermined period is smaller than the round trip count of the measurement point within a predetermined period prior to the predetermined period as an acceptance criterion. And a pace evaluation means for evaluating, and when the number of reciprocations within a predetermined period is smaller than the number of reciprocations within a predetermined period, an alarm output processing means outputs an alarm to assist in increasing the number of reciprocations. A computer program for cardiac massage support.

  According to the present invention, it can be used for lifesaving training easily, and measures that do not feel uncomfortable with an actual heart massage can be executed even in the lifesaving field.

FIG. 1 shows a situation where cardiac massage is performed using the cardiac massage support device according to the embodiment of the present invention. FIG. 2 shows a perspective view of an example of a position detector for use with a cardiac massage assisting device. FIG. 3 shows an example of a practitioner's glove configured to place the position detector on the back side of the practitioner's hand. FIG. 4 shows a front view of the cardiac massage assisting apparatus shown in FIG. FIG. 5 shows the initial position of the three reflected light images taken and the change in the position of the reflected light when the position detector moves downward from the initial position in the three-dimensional coordinate system of the video camera. FIG. 6 is a diagram illustrating a situation in which a change in the position of the center of gravity G illustrated in FIG. 5 is tracked. FIG. 7 is a diagram for explaining an example of correct heart massage criteria. FIG. 8 shows the structure of the cardiac massage assisting device shown in FIG. FIG. 9 is a diagram for explaining an example of alarm types output from the main device shown in FIG. 8 and their priorities. FIG. 10 shows a part of a flowchart of processing of the cardiac massage support apparatus shown in FIG. FIG. 11 shows a part of a flowchart of processing that follows the flowchart of FIG. FIG. 12 shows another part of the flowchart of the processing that follows the flowchart of FIG. FIG. 13 shows another part of the flowchart of the processing that follows the flowchart of FIG. FIG. 14 shows another part of the flowchart of the processing that follows the flowchart of FIG. FIG. 15 shows another part of the flowchart of the processing that follows the flowchart of FIG. FIG. 16 shows an example of a screen displayed on the monitor by the processing of the cardiac massage support apparatus shown in FIG. FIG. 17 is an example of a screen displayed on the monitor by the processing of the cardiac massage support apparatus shown in FIG. 1, and shows a screen different from the screen shown in FIG. FIG. 18 is an example of a screen displayed on the monitor by the processing of the cardiac massage support apparatus shown in FIG. 1, and shows a screen different from both screens shown in FIGS. FIG. 19 shows a situation where a heart massage is performed using a heart massage support device according to another embodiment different from the embodiment shown in FIG.

  Next, a cardiac massage support device and a cardiac massage support computer program according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a situation where cardiac massage is performed using the cardiac massage support device according to the embodiment of the present invention.

  The cardiac massage assisting apparatus 1 according to this embodiment includes a main body device 2, an infrared light emitting unit 3 as an example of a light emitting means mounted on the main body device 2, and a video camera 4 mounted on the main body device 2. . When performing cardiac massage on a patient or a training human body model (hereinafter referred to as “patient etc.”) P1 to be subjected to cardiac massage, the practitioner P2 who performs cardiac massage places a position detector 5 on the back of his hand on one side. It is preferable to arrange the main body device 2 in front of the practitioner P2 (corresponding to the side of the patient P1, etc.). However, the main device 2 does not necessarily have to be placed in front of the practitioner P2, and can emit infrared light toward the position detector 5 and can image the vicinity of the position detector 5. For example, the arrangement position is not limited. When the practitioner P2 activates the main body device 2 and repeatedly presses and releases the chest of the patient P1, etc. with the position detector 5 fixed to the back of his hand, the infrared light emitting unit 3 of the main body device 2 emits. The reflected infrared light is reflected by a part of the position detector 5, and the video camera 4 captures the reflected infrared light (referred to as reflected light). The main device 2 tracks the position variation of the reflected light and displays the position variation on the monitor. As a result, the practitioner P2 can objectively confirm whether or not his / her heart massage is performed correctly while looking at the monitor of the main device 2, and can improve it in real time if it is not correct.

  In this embodiment, as shown in FIG. 1, the heart massage support device 1 is composed of a main body device 2 on which both an infrared light emitting unit 3 and a video camera 4 are mounted. However, at least one of the light emitting device including the infrared light emitting unit 3 and the video camera 4 may be physically separated from the main device 2.

  FIG. 2 shows a perspective view of an example of a position detector for use with a cardiac massage assisting device.

  The position detector 5 used in this embodiment has a configuration in which three columns 7a, 7b, and 7c are erected on a pedestal 6, and reflection markers 8a, 8b, and 8c are fixed to the respective tips. Have. In this embodiment, the column 7a is longer (length: 2L) than the columns 7b and 7c, and the length of the column 7b and the length of the column 7c are substantially the same (length: L). As a result, the triangle formed by connecting the three reflective markers 8 a, 8 b, and 8 c becomes an isosceles triangle and is inclined with respect to the upper surface of the pedestal 6. When the reflective markers 8a, 8b, and 8c are arranged in this manner, the video mounted on the main device 2 with the back of the hand of the practitioner P2 and the height of the lens of the video camera 4 being substantially the same height with respect to the floor. When the reflection markers 8a, 8b, and 8c are imaged by the camera 4, the possibility that the three reflection markers 8a, 8b, and 8c are arranged in a straight line or the reflection markers 8a, 8b, and 8c overlap each other can be reduced. Further, when the reflective marker 8a is positioned higher than the other reflective markers 8b and 8c, the position of the reflective marker 8a can be easily specified in the field of view imaged by the video camera 4, so that the hand movement of the operator P2 can be accurately determined. Can be recognized. However, it is not essential to set the heights of the reflective markers 8a, 8b, and 8c as described above. This is because by changing the size and shape of the three reflection markers 8a, 8b, and 8c, the movement of the hand of the practitioner P2 can be accurately recognized without being restricted by the heights of the reflection markers 8a, 8b, and 8c. As the reflective markers 8a, 8b, and 8c, for example, a sphere made of foamed polystyrene having a surface coated with a high reflectance can be used easily, but is not limited thereto.

  FIG. 3 shows an example of a practitioner's glove configured to place the position detector on the back side of the practitioner's hand.

  As shown in FIG. 3, the position detecting device 5 can be fixed to the back side of the glove 9 for the practitioner P2. Various known methods can be adopted as the fixing method depending on the materials of the base 6 and the gloves 9. During the heart massage, the position detector 5 is fixed to the back side of the glove 9 so that the reflective marker 8a faces the base of the thumb so that the reflective marker 8a is positioned closer to the body of the practitioner P2. It is preferable to do this. The position detector 5 may be directly fixed to the back of the hand of the practitioner P2 without using the glove 9, but to make it easy to fix the position detector 5 to the hand, it is fixed to the glove 9. Is preferred. In addition, when the patient P1 is a person, the hand of the practitioner P2 directly touches the person's chest during the heart massage, and there is a possibility that either of them or each other may be infectious disease via blood. Yes. In order to prevent this, it is preferable to fix the position detector 5 to the glove 9.

  FIG. 4 shows a front view of the cardiac massage assisting apparatus shown in FIG.

  The main body device 2 constituting the cardiac massage assisting apparatus 1 includes an input unit 10 having input keys (including touch keys), various still images and moving images captured by the video camera 4, and screens for setting conditions. And a monitor 11 capable of displaying a screen. Further, as described above, the main device 2 includes the infrared light emitting unit 3 and the video camera 4. For example, a plurality of infrared light emitting units 3 can be provided around the lens of the video camera 4. The mounting positions of the infrared light emitting unit 3 and the video camera 4 are not limited to the mounting positions shown in FIG. 4, but it is easy to emit infrared light from a position higher than the chest of the patient P1 or the like and receive reflected light. It is preferable to set the position where the

  FIG. 5 shows the initial position of the three reflected light images taken and the change in the position of the reflected light when the position detector moves downward from the initial position in the three-dimensional coordinate system of the video camera.

  When the reflected lights 18a, 18b, 18c from the three reflective markers 8a, 8b, 8c fixed on the position detector 5 are displayed in a predetermined three-dimensional coordinate (XYZ coordinate system), For example, it is displayed as shown in FIG. Here, the X axis is the shooting direction of the video camera 4, the Z axis is the vertical direction (gravity direction), and the Y axis is the direction orthogonal to the X axis and the Z axis. The coordinates at the initial positions of the reflected lights 18a, 18b, and 18c are (x1, y1, z1), (x2, y2, z2), and (x3, y3, z3), respectively. When the coordinates of the three points are determined, the triangle T connecting these points is uniquely determined, and the center of gravity G of the triangle T is also uniquely determined. Now, the position of the reflected light 18a, 18b, 18c from the three reflective markers 8a, 8b, 8c is changed to the reflected light 18a ′ (coordinates: x1 ′, y1 ′, z1 ′) by the downward movement of the position detector 5. ), 18b ′ (coordinates: x2 ′, y2 ′, z2 ′), 18c ′ (coordinates: x3 ′, y3 ′, z3 ′). At this time, the coordinates of the triangle T ′ and its center of gravity G ′ are also determined by the coordinates of the reflected light 18 a ′, 18 b ′, and 18 c ′. Therefore, it is possible to grasp that the center of gravity G at the initial position has moved to the center of gravity G ′ along with the movement of the position detector 5. That is, a heart massage is performed, and the reflection markers 8a, 8b, and 8c that move as the position detector 5 continuously moves in the vertical direction are continuously photographed by the video camera 4, so that the reflected lights 18a, 18b, and 18c are reflected. The change in the position of the center of gravity G of the triangle T formed in this way can be captured.

  FIG. 6 is a diagram illustrating a situation in which a change in the position of the center of gravity G illustrated in FIG. 5 is tracked.

  Assuming that the video camera 4 has a function of imaging at 100 frames / second, 100 centroids G can be captured per second. When the center of gravity G moves downward (in the direction of B in FIG. 6) from the initial position, a total of n center of gravity positions of G, G1, G2,... Gn are obtained in (0.01 × n) seconds. Can be identified. When these are connected, the locus of the center of gravity G for (0.01 × n) seconds can be drawn in a line. The main device 2 performs such processing, and displays the locus R of the center of gravity G during the heart massage on the monitor 11. Note that the number of frames per second for shooting is not limited to 100.

  FIG. 7 is a diagram for explaining an example of correct heart massage criteria.

Now, let the initial position of the center of gravity G be the origin (0, 0, 0) of the three-dimensional coordinates. Ideally, the heart massage is approximately up to a depth where the compression length becomes 5 cm or more with the number of reciprocations of 100 times / min or more in the vertically downward direction of the palms of the hands of P1 and the like. needs to be done over 5 minutes at compression velocity V _{F =} the release rate V _R condition. Moreover, it is desirable that the initial pace be maintained substantially. Such ideal conditions are regarded as an example of the acceptance criteria, and the memory of the main device 2 stores the acceptance criteria data. The main device 2 compares the data (calculation data) obtained by tracking the center of gravity G with the data of the permissible standard while tracking the center of gravity G, and if the cardiac massage deviates from the permissible standard, It is possible to output an alarm that corrects the problem. “Calculated data” means both position data of a measurement point and data obtained from the position and its change.

Permissible reference data regarding the number of round trips within a predetermined time is stored in the memory as “N times / min ≧ 100”. The data of the acceptance standard regarding the compression length (L) is stored in the memory as “L ≧ 5 cm”. The data of the tolerance standard regarding the ratio between the compression speed (V _F ) and the release speed (V _R ) is stored in the memory as “V _F / V _R = 0.9 to 1.1”. In addition, tolerance standard data regarding the ratio between the compression time (T _F ) and the release time (T _R ) may be prepared and stored in the memory as “T _F / T _R = 0.9 to 1.1”. . The data of the tolerance standard regarding the swing from the vertically downward position of the heart massage comes from the bottom surface of the diameter D centered on the center of gravity Gn (0, 0, L) at the vertically downward position of the initial position G (0, 0, 0). Since the heart massage is performed in a range that does not exist, “D ≦ 5 cm” is stored in the memory. In other words, correct heart massage with small shake is an action in which the center of gravity G continuously reciprocates in the virtual cylinder 19 shown in FIG. In addition, the acceptable standard data regarding the duration of the initial pace is set such that the predetermined time is set to, for example, 30 seconds, and the number of reciprocations in the subsequent 30 seconds does not fall below the number of reciprocations in 30 seconds after starting the heart massage. From the point of view, it is stored in the memory as “N times / initial set ≦ N times / next set”. “Acceptable standard data” means both data indicating a predetermined acceptable standard and data that changes every moment.

  Instead of “N times / min ≧ 100”, a numerical range having an upper limit and a lower limit, such as “100 ≦ N times / min ≦ 130”, may be set as acceptable reference data regarding the number of round trips within a predetermined time. good. Further, instead of “L ≧ 5 cm”, a numerical range having an upper limit and a lower limit, such as “5 cm ≦ L ≦ 6 cm”, may be used as the data of the acceptable standard regarding the compression length. In addition, the acceptance criterion data regarding the duration of the initial pace may not always be the number of reciprocations within the predetermined period at the beginning of the start, but may be the number of reciprocations within the predetermined period immediately before the start. Instead of comparing the number of round trips for 30 seconds from the second to 90 seconds with the number of round trips for 30 seconds from the start, the number of round trips for 30 seconds from the start 30 seconds to 60 seconds may be compared. good. Furthermore, even if the number of reciprocations is less than the acceptable reference data, it may be permitted if it is a predetermined decrease. For example, a decrease of 5% may be permitted.

  FIG. 8 shows the structure of the cardiac massage assisting device shown in FIG.

  The main body device 2 constituting the cardiac massage support device 1 is preferably a speaker 20, an outlet 21, a bus 22, an interface (I / F) 23, a light emission instruction unit 24, a light reception recognition unit 25, a measurement point determination unit 26, and a measurement. Point tracking unit 27, imaging unit 28, display processing unit 29, audio output processing unit 30, storage unit 31, program storage memory 32, external memory loading unit 33, highest point / lowest point determination unit 34, evaluation start unit 35, Number evaluation unit 36, compression length evaluation unit 37, top point position evaluation unit 38, bottom point position evaluation unit 39, round-trip time / speed evaluation unit 40, pace evaluation unit 41, pace signal transmission unit 42, alarm output processing unit 43 A battery 44, a switching unit 45, and a power supply unit 46. The main device 2 includes hardware such as a central processing unit (CPU) and various memories (ROM, RAM, EEPROM, hard disk drive, etc.). At least the light emission instruction unit 24, the light reception recognition unit 25, the measurement point determination unit 26, the measurement point tracking unit 27, the imaging unit 28, the display processing unit 29, the audio output processing unit 30, the highest point / lowest point determination unit 34, evaluation Start unit 35, frequency evaluation unit 36, compression length evaluation unit 37, uppermost point position evaluation unit 38, lowermost point position evaluation unit 39, reciprocation time / speed evaluation unit 40, pace evaluation unit 41, pace signal transmission unit 42, alarm The output processing unit 43, the switching unit 45, and the power supply unit 46 are units that realize processing by cooperation between the CPU and the computer program. The imaging unit 28 is preferably one configuration in the video camera 4. The storage unit 31 means a memory generically including ROM, RAM, EEPROM, hard disk drive, and the like. In the case of storing information that is simply read, the storage unit 31 is configured by a ROM. On the other hand, when information is stored in a readable / writable state, the storage unit 31 includes a RAM, an EEPROM, and a hard disk (referred to as “RAM etc.”). The storage unit 31 may include a ROM and a RAM. The program storage memory 32 is a memory for storing a computer program for assisting cardiac massage, and is preferably a readable / writable memory. The program storage memory 32 is configured by a hard disk drive, for example. The external memory loading unit 33 is a component that loads the information recording medium 50.

  The speaker 20 is a part that outputs the sound of an alarm and pace signal described later. The outlet 21 is a part that receives power from an external power source. The bus 22 is a signal path of each component in the main device 2. The interface (I / F) 23 is a part that is connected to the input unit 10, receives a signal from the input unit 10, converts it to another signal as necessary, and sends the signal to another configuration. . The light emission instructing unit 24 is a part that transmits a signal so that the infrared light emitting unit 3 emits light in accordance with an instruction from the input unit 10 or a description of a computer program stored in a program storage memory 32 described later. The light receiving recognition unit 25 is a part that recognizes the reflected lights 18a, 18b, and 18c from the reflection markers 8a, 8b, and 8c, which are present in the video by the video camera 4.

  The measurement point determination unit 26 determines the measurement point (in this embodiment, the center of gravity G) based on the respective positions of the reflection markers 8a, 8b, and 8c in the three-dimensional coordinates fixed in the field of view of the video camera 4. ) Is a portion that functions as a measurement point determination means for determining the position of the The position of the center of gravity G as a measurement point is determined by calculating the center of gravity of the triangle T based on the positions of the reflected lights 18a, 18b, and 18c. However, the measurement point is not limited to the center of gravity G. For example, the measurement point may be the center of an inscribed circle inscribed inside the triangle T or the center of an inscribed circle circumscribed to the outside of the triangle T.

  The measurement point tracking unit 27 functions as a measurement point tracking unit that tracks a change in the position of the measurement point. Specifically, the reflected light changes momentarily based on moving image data from the imaging unit 28 described later. From the positions 18a, 18b, and 18c, the position of the center of gravity Gn as a measurement point is calculated and connected. The calculation method of the center of gravity Gn is the same as the calculation method of the center of gravity G by the measurement point determination unit 26.

  The imaging unit 28 is a part that is imaged by the video camera 4 and can produce a still image and a moving image. When creating a moving image, an image is captured at a predetermined number of frames per second (for example, 100 frames).

  The display processing unit 29 is a part that displays captured still images, moving images, and other images on the monitor 11, and is a part that functions as a display processing unit that displays changes in the position of the center of gravity G as a measurement point on the monitor 11. is there. As an option, the display processing unit 29 can also display the allowable zone of the locus of the measurement point on the monitor 11 at least during the tracking of the measurement point. Acceptable zones are only three-dimensional coordinates, only two-dimensional coordinate planes (at least one of the XY plane, YZ plane, and XZ plane) created from the three-dimensional coordinates, and the three-dimensional coordinates. And two-dimensional coordinate planes. In order to facilitate visual recognition from the practitioner P2, it is more preferable to display the tolerance zone on at least the two-dimensional coordinate plane. However, the display of the tolerance zone is not an essential process.

  The sound output processing unit 30 is a part that performs processing for outputting a sound of an alarm and a pace signal described later from the speaker 20.

  The storage unit 31 is a part for storing various programs and various data. Data relating to various alarms, data on acceptable standards necessary for performing cardiac massage evaluation (allowable times, allowable depths, allowable ratios, Including the tolerance zone), the locus of the measurement point obtained by imaging the heart massage, the calculated data calculated from the locus, various imaged image data, the data of various condition setting screens displayed on the monitor 11, the measurement point This is a part for storing a frame image or the like having three-dimensional coordinates or two-dimensional coordinates for displaying a locus.

  The program storage memory 32 is a storage area for storing the cardiac massage support computer program according to this embodiment. The external memory loading unit 33 is configured to be able to load an information recording medium (CD-R, flash memory, etc.) 50 in which a computer program for cardiac massage support is stored, reads the computer program for cardiac massage support, and stores a program storage memory. 32 is a part for storing it.

  The uppermost point / lowermost point determination unit 34 is a part that determines the positions of the uppermost point and the lowermost point from the relative positions of a plurality of measurement points. For example, it is possible to always compare with one coordinate before and after and determine the coordinate having the minimum value or the maximum value as the lowest point or the highest point, respectively. The comparison target may be two or more coordinates before and after. Further, the uppermost point / lowermost point determination unit 34 can also calculate the time of the forward path and the time of the backward path based on the specification of the positions of the lowest point and the uppermost point.

  The evaluation start unit 35 determines whether or not a predetermined time set in advance (for example, 2 seconds) is reached, and starts various evaluations for changes in the position of the measurement point when the predetermined time is reached. This is the part that sends out the command to be executed. For example, in a computer program for cardiac massage support, when it is described that a certain type of evaluation is performed every 2 seconds, the evaluation start unit 34 determines whether or not 2 seconds have elapsed and determines whether 2 seconds have elapsed. A command to start the certain kind of evaluation is issued as a condition. Further, when it is described that another type of evaluation is performed every 30 seconds, the evaluation start unit 34 determines whether or not 30 seconds have elapsed, and on the condition that 30 seconds have elapsed, the other type You can also issue a command to start the evaluation. Moreover, the evaluation start part 35 can also judge whether it is the end of a process. The end of the processing is preferably triggered by the fact that the reflected light 18a, 18b, 18c has stopped moving for a certain period of time (for example, 5 seconds), or has reached a predetermined time (for example, 10 minutes) set in advance. As an example.

  The frequency evaluation unit 36, compression length evaluation unit 37, uppermost point position evaluation unit 38, lowermost point position evaluation unit 39, round-trip time / speed evaluation unit 40, and pace evaluation unit 41 each have a predetermined time (for example, 2 seconds or It is a part that functions as an evaluation unit that compares and evaluates the calculated data calculated from the change in the position of the measurement point tracked in 30 seconds) and the data of the acceptance criteria stored in the storage unit 31. It should be noted that the acceptance criteria data may be described in a cardiac massage support computer program in the program storage memory 32 instead of the storage unit 31.

  The number evaluation unit 36 is a part that functions as a number evaluation unit that evaluates the number of round trips of the measurement point within a predetermined time by comparing with the allowable number stored in the storage unit 31. The number of reciprocations can be counted by the number evaluation unit 36, or the measurement point tracking unit 27 may count the tracking number together with the tracking. For example, when the predetermined time is set to 2 seconds and the allowable reference data indicating the lower limit of “N ≧ 3.3 times / 2 seconds” is stored in the storage unit 31, the frequency evaluation unit 36 sets 2 It is evaluated whether the number of reciprocations (N times) of the measurement points per second is 3.3 times / 2 seconds or more.

  The compression length evaluation unit 37 functions as a compression length evaluation unit that evaluates the position of the lowest point of the forward path of the measurement point within a predetermined time by comparing with the allowable depth range stored in the storage unit 31. It is. The measurement of the compression length can be executed by the compression length evaluation unit 37 or can be executed by the measurement point tracking unit 27 and the uppermost / lowermost point determination unit 34. For example, when the predetermined time is set to 2 seconds and the allowable reference data indicating the lower limit depth “L ≧ 5 cm” is stored in the storage unit 31, the compression length evaluation unit 37 includes a plurality of 2 seconds. It is evaluated whether at least one of the lowest points of the measurement points is a position less than 5 cm. Note that the compression length evaluation unit 37 may evaluate whether the number of two or more of the lowest points is less than 5 cm.

  The uppermost point position evaluation unit 38 functions as one of trajectory evaluation means that evaluates the trajectory of the measurement point within a predetermined time by comparing the trajectory of the measurement point with the data of the tolerance standard stored in the storage unit 31. It is. Specifically, the uppermost point position evaluation unit 38 has a plurality of uppermost point positions determined by the uppermost point / lowermost point determination unit 34 within a predetermined time and a diameter Dcm (for example, Evaluate whether all exist within the circle of D = 5). Note that the highest point position evaluation unit 38 may evaluate whether most of the uppermost points except for the highest points exist in a circle having a diameter Dcm. Further, the top point position evaluation unit 38 is preferably configured so that the top point outside the circle is the front side of the practitioner P2 (front), the body side (rear side) of the practitioner P2, It can also be specified whether there are many regions on the left side (left) of the practitioner P2 or the right side (right) of the practitioner P2. In addition, instead of a circle having a diameter of Dcm, an area having another shape such as a square having a side of Dcm may be used as an acceptance criterion.

  The lowest point position evaluation unit 39 functions as one of trajectory evaluation means that evaluates the trajectory of the measurement point within a predetermined time by comparing with the data of the tolerance standard called the tolerance zone stored in the storage unit 31. Part. Specifically, the lowest point position evaluation unit 39 has a plurality of lowest point positions determined by the highest point / lowest point determination unit 34 within a predetermined time, and the diameter Dcm centered on the initial measurement point. It is evaluated whether or not all exist within a circle (for example, D = 5). Note that the lowest point position evaluation unit 39 may evaluate whether most of the points except the lowest point exist in a circle having a diameter Dcm, instead of all the lowest points. Further, the lowest point position evaluation unit 39 is preferably configured so that the lowest point out of the circle has a front side (front) of the practitioner P2 and a body side (rear side) of the practitioner P2 in the field of view when the circle is viewed from directly above. ), It can be specified whether there are many in the left side (left) of the practitioner P2 or the right side (right) of the practitioner P2.

The round-trip time / speed evaluation unit 40 stores in the storage unit 31 the ratio between the forward time (or forward speed) of the measurement point within a predetermined time and the return time (or backward speed) of the return path following the forward path. This is a part that functions as a preferred example of the round-trip time / speed evaluation means that is evaluated in comparison with the allowable ratio range. Specifically, the round-trip time / speed evaluation unit 40 stores “T _F / T” in which the ratio of the forward path time (T _F ) and the return path time (T _R ) in each round trip of the measurement point is stored as an allowable ratio. It is evaluated whether it is in the range of “ _R = 0.9 to 1.1”. In the case of introducing the forward speed and the backward speed in place of the forward time and the backward time, the round trip time / speed evaluation unit 40 determines the forward speed (V _F ) and the backward speed (V _R ) in each round trip of the measurement point. Is in the range of “V _F / V _R = 0.9 to 1.1” which is an allowable ratio. _{Incidentally,} T F / _{T R} or _V F / _{V R} is not limited to 0.9 to 1.1, it may be other numerical range such as 0.95 to 1.05. Further, the round trip time / velocity evaluation unit 40 can calculate the forward trip time, the forward trip speed, the return trip time, and the return trip speed in place of or overlapping with the highest point / lowest point determination unit 34 or measurement. The point tracking unit 27 may calculate with tracking.

  The pace evaluation unit 41 functions as a pace evaluation unit that compares and evaluates whether or not the number of reciprocations of measurement points within a predetermined period is less than the number of reciprocations of measurement points within a predetermined period prior to the predetermined period. Part. The number of reciprocations of the measurement point in the previous predetermined period, which is the acceptance reference data, can be easily read from the storage unit 31 because the reciprocal locus of the measurement point is recorded during cardiac massage. For example, when the predetermined period is set to 30 seconds, the pace evaluation unit 41 measures the number of round trips of the measurement points for 30 seconds from 90 seconds after the start of tracking of the measurement points to 120 seconds later, Evaluate if the number of points is less than the number of round trips. In the case of the above example, the acceptance criterion data is the number of round trips of the measurement point for 30 seconds immediately after the start of tracking. Instead, just before the evaluation, such as 30 seconds from 60 seconds to 90 seconds after the start of tracking. It is also possible to set the number of reciprocations of the measurement points within a predetermined period.

  The pace signal sending unit 42 outputs the reference ideal cardiac massage compression and release pace from the speaker 20 and / or the monitor 11 in the form of sound and / or light emission. Or it is a part which sends a signal to the display processing unit 29. Since the cardiac massage practitioner P2 can adjust his / her own compression and release pace in accordance with the output, cardiac massage with a correct rhythm can be easily performed. Based on the description in the computer program for assisting cardiac massage, the pace signal sent by the pace signal sending unit 42 may be sent simultaneously with the start of the heart massage or may be sent earlier than the start. That is, it is only necessary that a pace signal is output when tracking of the measurement point is started. However, the transmission of the pace signal is not essential, and only the measurement point trajectory may be displayed on the monitor 11.

  The alarm output processing unit 43 is based on evaluation means such as a frequency evaluation unit 36, a compression length evaluation unit 37, an uppermost point position evaluation unit 38, a lowermost point position evaluation unit 39, a round-trip time / speed evaluation unit 40, and a pace evaluation unit 41. As a result of the evaluation, when the calculated data to be evaluated deviates from the acceptance criteria, it is a part that functions as an alarm output processing unit that reads data of a specific alarm from the storage unit 31 and outputs the alarm. In response to the evaluation by the frequency evaluation unit 36, the alarm output processing unit 43 outputs an alarm that assists by voice so that the number of round trips of the measurement point is less than the allowable number. Is sent to the audio output processing unit 30. When the alarm is in a form such as character display, image display, or light emission, the alarm output processing unit 43 sends a signal for outputting the alarm from the monitor 11 to the display processing unit 29. The alarms for the evaluations of the compression length evaluation unit 37, the uppermost point position evaluation unit 38, the lowermost point position evaluation unit 39, the round-trip time / speed evaluation unit 40, and the pace evaluation unit 41, which will be described later, are displayed as characters, images, or light emission. Also in this case, a signal is similarly sent to the display processing unit 29.

  In response to the evaluation by the compression length evaluation unit 37, the alarm output processing unit 43 performs a voice so as to enter the allowable depth range when the lowest point position of the forward path of the measurement point is not within the allowable depth range. A signal for outputting an alarm to be supported by the speaker 20 from the speaker 20 is sent to the audio output processing unit 30.

  In response to the evaluation by the highest point position evaluation unit 38, the alarm output processing unit 43 outputs an alarm for assisting entry into the allowable zone when the locus of the measurement point is out of the allowable zone. Functions as an example. Specifically, the alarm output processing unit 43 uses voice to enter the circle when the highest point of the measurement points does not exist in a circle with a diameter Dcm centered on the initial measurement point. A signal for outputting an assisting alarm from the speaker 20 is sent to the audio output processing unit 30. For example, in the evaluation of the highest point position evaluation unit 38, when the highest point of the measurement point is out of the circle to the left side of the practitioner P2, there is a possibility that it is squeezed diagonally toward the right in the opposite direction. . For this reason, the alarm output processing unit 43 selects such an alarm that conveys the situation of the oblique push or assists the improvement, and performs an output process.

  In response to the evaluation by the lowest point position evaluation unit 39, the alarm output processing unit 43 outputs an alarm for assisting entry into the allowable zone when the locus of the measurement point is out of the allowable zone. It functions as an example of means. Specifically, when the lowest point of the measurement point does not exist in a circle having a diameter Dcm centered on the initial measurement point, the alarm output processing unit 43 makes a sound so as to enter the circle. Then, a signal for outputting an alarm to be supported from the speaker 20 is sent to the audio output processing unit 30. For example, in the evaluation of the lowest point position evaluation unit 39, when the lowest point of the measurement point is out of the circle to the left side of the practitioner P2, there is a possibility that it is squeezed diagonally to the left. For this reason, the alarm output processing unit 43 selects such an alarm that conveys the situation of the oblique push or assists the improvement, and performs an output process.

  In response to the evaluation by the round-trip time / speed evaluation unit 40, the alarm output processing unit 43 calculates the forward time (or forward speed) of the measurement point within a predetermined time and the return time (or return speed) of the return path following the forward path. When the ratio is out of the allowable ratio range, a signal for causing the speaker 20 to output an alarm for assisting in entering the allowable ratio range is sent to the audio output processing unit 30.

  In response to the evaluation by the pace evaluation unit 41, the alarm output processing unit 43 provides an alarm for assisting the speaker 20 to improve when the number of reciprocations in the predetermined period is smaller than the number of reciprocations in the previous predetermined period. Is sent to the audio output processing unit 30.

  In a situation where power can be supplied from the outside, the switching unit 45 does not consume the battery 44 and sends power from the outside to the power supply unit 46, but cannot receive power from the outside. In the case of a situation, the switch mechanism unit sends power from the battery 44 to the power supply unit 46. The power supply unit 46 is a part that sends external power and power from the battery 44 to the circuit of the main device 2.

  FIG. 9 is a diagram for explaining an example of alarm types output from the main device shown in FIG. 8 and their priorities.

  The storage unit 31 stores various types of alarm data for the alarm output processing unit 43 to read. For example, an alarm (referred to as alarm 1) that is read when the number of round trips of a measurement point within a predetermined period is less than the allowable number is voice data “please press earlier” as an example. For example, an alarm (referred to as alarm 2) that is read when the compression length of a measurement point within a predetermined period is not within the allowable depth range is, for example, voice data “please press deeper”. For example, the ratio of the forward time (or forward speed) of the measurement point within a predetermined time and the return time (or backward speed) of the return path following the forward path is out of the allowable ratio range, and the forward time is relatively An alarm (referred to as alarm 3a belonging to alarm 3) that is read when it is long (or when the forward speed is low) is, for example, voice data “please increase the pressing speed”. Further, the ratio of the forward time (or forward speed) of the measurement point within the predetermined time and the return time (or return speed) of the return path following the forward path is out of the allowable ratio range, and the return time is relatively As an example, the alarm (referred to as alarm 3b belonging to alarm 3) read out when the time is long (or the return speed is low) is voice data “Please increase the release speed”.

  For example, an alarm (an alarm belonging to alarm 4) that is read when most of the lowest points of the measurement points within a predetermined period are on the front side of the circle as the tolerance zone or most of the highest points are on the rear side of the circle. 4a) is, for example, voice data “inclined and pushed forward”. Similarly, an alarm (belonging to alarm 4) that is read when most of the lowest points of the measurement points within a predetermined period are on the rear side of the circle as the tolerance zone or when most of the highest points are on the front side of the circle. The alarm 4b) is, for example, voice data “inclined and pushed backward”. Also, an alarm (alarm 4c belonging to alarm 4) that is read when most of the lowest points of the measurement points within a predetermined period are on the left side of the circle as the permissible zone or when most of the highest points are on the right side of the circle. Is, for example, voice data that “they are tilted and pushed toward the left”. Furthermore, an alarm (alarm 4d belonging to alarm 4) that is read when most of the lowest points of the measurement points within a predetermined period are on the right side of the circle as the tolerance zone or when most of the highest points are on the left side of the circle. Is, for example, voice data that “they are tilted and pushed to the right”.

  In addition, an alarm (Alarm 5) that is read when the number of round-trips within a given period is less than the number of round-trips within a given period is, for example, “The pace has dropped. Is voice data.

  There are also situations in which multiple alarms are output as a result of the measurement point evaluation. In such a case, the alarm output processing unit 43 outputs the alarms in the order of alarm 1, alarm 2, alarm 3, alarm 4, and alarm 5 in order from the higher priority to the lower priority. 30. Note that the priority order of alarms can be arbitrarily set from the input unit 10.

  10 to 15 show flowcharts of processing of the cardiac massage support apparatus shown in FIG.

  The light emission instructing unit 24 instructs the infrared light emitting unit 3 to emit light based on the input from the input unit 10 or the description of the time schedule of the computer program for assisting cardiac massage (step 101). As a result of imaging the infrared rays reflected by the reflection markers 8a, 8b, and 8c by the video camera 4, the light reception recognition unit 25 recognizes the three reflected lights 18a, 18b, and 18c in the imaging field of view (step 102). The measurement point determination unit 26 is an initial measurement point (in this embodiment, the center of gravity G) based on the positions of the three reflected lights 18a, 18b, and 18c scattered in a three-dimensional coordinate system prepared in advance. Is determined (step 103). After determining the initial measurement point, the pace signal sending unit 42 issues an instruction to start outputting the pace signal (step 104). In addition to the perspective view of the three-dimensional coordinate system, the display processing unit 29 is a front view of the YZ plane from the X axis, a side view of the XZ plane from the Y axis, and an XY plane from the Z axis. Three kinds of two-dimensional coordinate planes of the plan view of the above are created and displayed on the monitor 11 (step 105). The measurement point tracking unit 27 starts tracking measurement points that change with the movement of the three reflected lights 18a, 18b, and 18c (step S106).

  The highest point / lowest point determination unit 34 determines the lowest point of the forward path from the measurement point being tracked (step 107), and determines the highest point of the return path (step 108). Step 107 and step 108 may be executed alternately in accordance with the transition of time in addition to the above-described order, and the latter is particularly preferable. Further, the highest point / lowest point determination unit 34 calculates the forward time and the backward time based on the specification of the positions of the lowest point and the highest point (step 109). The evaluation start unit 35 determines whether or not a predetermined time (for example, 2 seconds) set in advance has been reached (step 110). As a result of the determination, if the predetermined time has not been reached, the process returns to step 107 and the processes from step 107 to step 109 are repeated. On the other hand, when the predetermined time is reached as a result of the determination, in addition to returning to step 107, the process proceeds to step 111, step 121, step 131, step 141, and step 151 for starting various evaluations.

(Evaluation of the number of round trips)
The number evaluation unit 36 calculates the number of reciprocations within a predetermined time (step 111) and evaluates whether the number of reciprocations is equal to or greater than the allowable number (step 112). When the allowable number of times is not reached, the alarm output processing unit 43 selects the alarm 1 illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 113). The audio output processing unit 30 outputs the selected alarm 1 from the speaker 20 in the designated order based on the instruction from the alarm output processing unit 43 (step 114). Since alarm 1 generally has the highest priority, it is preferable that alarm 1 is output first even if output of another alarm is required. Next, the evaluation start unit 35 determines whether or not the process is finished (step 115). As a result of the evaluation in step 112, when the allowable number is satisfied, the process proceeds to step 115. As a result of the determination in step 115, if the end condition is not satisfied, the evaluation start unit 35 returns to step 110, and if the end condition is satisfied, the process ends.

(Evaluation of compression depth)
The compression length evaluation unit 37 calculates each compression length (step 121), and evaluates whether each compression length is greater than or equal to the allowable depth (step 122). When the allowable depth is not reached, the alarm output processing unit 43 selects the alarm 2 illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 123). The audio output processing unit 30 outputs the selected alarm 2 from the speaker 20 in the designated order based on the instruction from the alarm output processing unit 43 (step 124). Next, the process proceeds to step 115. Even if the allowable depth is satisfied as a result of the evaluation in step 122, the process proceeds to step 115.

(Evaluation of round trip time)
The round-trip time / speed evaluation unit 40 calculates the ratio of the time of each forward path and each return path of the measurement point (step 131), and evaluates whether or not the forward path time / return time is in the range of 0.9 to 1.1. (Step 132). If the outgoing time / return time is not in the range of 0.9 to 1.1, the round trip time / speed evaluation unit 40 determines whether the outgoing time is longer than the return time (step 133). As a result of the determination, if the forward time is longer than the return time, the alarm output processing unit 43 selects the alarm 3a illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 134). As a result of the determination in step 133, if the forward time is shorter than the return time, the alarm output processing unit 43 selects the alarm 3b illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 135). Following step 134 or step 135, the audio output processing unit 30 outputs the alarm 3a or the alarm 3b from the speaker 20 in the designated order based on the instruction from the alarm output processing unit 43 (step 136). Next, the process proceeds to step 115. As a result of the evaluation in step 132, the process proceeds to step 115 even when the forward / return time is in the range of 0.9 to 1.1. The steps 131 to 133 may be steps for calculating the ratio of the forward speed and the backward speed, evaluating the ratio relative to the allowable ratio, and determining the magnitude of the forward speed and the backward speed.

(Evaluation of runout)
The lowest point position evaluation unit 39 evaluates whether or not all forward route lowest points are in the tolerance zone (step 141). As a result, when the condition that all the lowermost points of the forward path are in the allowable zone is not satisfied, the lowest point position evaluation unit 39 determines in which of the front, rear, left, and right areas the lowest point outside the allowable zone is large. (Step 142). As a result of the determination, if there are many on the front side, the alarm output processing unit 43 selects the alarm 4a illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 143). If there are many on the rear side, the alarm output processing unit 43 selects the alarm 4b illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 144). When there are many on the left side, the alarm output processing unit 43 selects the alarm 4c illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 145). When there are many on the right side, the alarm output processing unit 43 selects the alarm 4d illustrated in FIG. 9 from the storage unit 31 and performs output processing (step 146). Following step 143, step 144, step 145, or step 146, the audio output processing unit 30 designates alarm 4 a, alarm 4 b, alarm 4 c, or alarm 4 d from the speaker 20 based on an instruction from the alarm output processing unit 43. Output in order (step 147). Next, the process proceeds to step 115. As a result of the evaluation in step 141, if all the lowest points are within the allowable zone, the process proceeds to step 115. Instead of the processing of the lowest point position evaluation unit 39, the same determination as the above step 141 and step 142 may be performed based on the position of the highest point by the processing of the highest point position evaluation unit 38. In this case, when there are many top points on the front side, the alarm output processing unit 43 selects the alarm 4b illustrated in FIG. 9 from the storage unit 31 and performs output processing. When there are many uppermost points on the rear side, the alarm output processing unit 43 selects the alarm 4a illustrated in FIG. 9 from the storage unit 31 and performs output processing. When there are many top points on the left side, the alarm output processing unit 43 selects the alarm 4d illustrated in FIG. 9 from the storage unit 31 and performs output processing. When there are many top points on the right side, the alarm output processing unit 43 selects the alarm 4c illustrated in FIG. 9 from the storage unit 31 and performs output processing.

(Pace assessment)
The evaluation start unit 35 determines whether or not a predetermined time for performing pace evaluation (for example, 60 seconds after the start) has been reached (step 151). As a result, when the predetermined time has been reached, the pace evaluating unit 41 determines the number of reciprocations for a predetermined time (for example, 30 seconds to 30 seconds after the start) and the comparison target. It is evaluated whether or not the number of times of reciprocation within a predetermined time (for example, 30 seconds immediately after the start) (referred to as an initial pace) has decreased (step 152). If the result of determination in step 151 is that the predetermined time for performing the pace evaluation has not been reached, the routine proceeds to step 115. As a result of the evaluation in step 152, when the pace within the predetermined period is lower than the initial pace, the alarm output processing unit 43 selects the alarm 5 illustrated in FIG. 9 from the storage unit 31 and performs output processing. (Step 153). The audio output processing unit 30 outputs the alarm 5 from the speaker 20 in the designated order based on the instruction from the alarm output processing unit 43 (step 154). Next, the process proceeds to step 115. Even if the initial pace is maintained or exceeded as a result of the evaluation in step 152, the process proceeds to step 115.

  The flow of processing by the cardiac massage support device 1 has been described above. In this processing, a computer program for cardiac massage support is stored in the program storage memory 32 of the cardiac massage support device 1, and the program is read and executed by the CPU. This is possible. As a preferred example of such a computer program for assisting cardiac massage, hardware constituting the cardiac massage assisting apparatus 1 is based on the positions of the reflected lights 18a, 18b, and 18c in the three-dimensional coordinates within the field of view of the video camera 4. Functions as a measurement point determination unit 26 that determines the position of the measurement point, a measurement point tracking unit 27 that tracks a change in the position of the measurement point, and a display processing unit 29 that displays the change in the position of the measurement point on the monitor 11 It is.

  As another preferred example of the computer program for cardiac massage support, in addition to the above functions, hardware constituting the cardiac massage support device 1 includes calculation data calculated from the change in the position of the measurement point and an example of a memory. The number of times evaluation unit 36, the compression length evaluation unit 37, the highest point position evaluation unit 38, the lowest point, which evaluates whether or not it is within the allowable standard by comparing with the data of the allowable standard stored in a certain storage unit 31 Evaluation means represented by the position evaluation unit 39, the round-trip time / speed evaluation unit 40, or the pace evaluation unit 41, and an alarm output process for outputting an alarm when the calculated data does not meet the acceptance criteria as a result of the evaluation by the evaluation unit The unit 43 functions as a unit.

  As another preferred example of the computer program for cardiac massage support, in addition to the above function, the display processing unit 29 displays an allowable zone on the monitor 11 at least during tracking of the measurement point. The computer program for cardiac massage support may be distributed in a state of being stored in the information recording medium 50, and is stored in a computer server arranged at a location physically separated from the cardiac massage support device 1 for communication. You may install in the program storage memory 32 in the cardiac massage assistance apparatus 1 by (for example, internet communication).

  16 to 18 show examples of various screens displayed on the monitor by the processing of the cardiac massage support device shown in FIG.

  A screen 61 shown in FIG. 16 is an example of a screen displayed on the monitor 11 when an experienced lifesaving person performs cardiac massage using the cardiac massage support device 1 according to this embodiment. The screen 61 includes a three-dimensional coordinate area 62 for displaying the locus of the measurement point in three dimensions, and a YZ coordinate area 63 that is one of the two-dimensional coordinate areas created based on the three-dimensional coordinate system. Similarly, an XZ coordinate area 64, which is one of the two-dimensional coordinate areas, an XY coordinate area 65, which is also one of the two-dimensional coordinate areas, and measurement points in the Z-axis direction with the time axis as the horizontal axis. A measurement point trajectory display area 66 whose displacement is indicated on the vertical axis and a trajectory enlargement area 67 showing a partial time zone in the measurement point trajectory display area 66 in an enlarged manner. The locus expansion area 67 is preferably an area that enables real-time display including the status of the heart massage currently being performed. In addition, a trajectory of a desired time zone may be displayed in the trajectory expansion area 67 according to the selection. The three-dimensional coordinate area 62 and the three types of two-dimensional coordinate areas 63, 64, and 65 include a triangle T that connects each position of the reflected light 18a, 18b, and 18c, and a trajectory R of the measurement point, and a visual field in each coordinate system. Is displayed. The two-dimensional coordinate areas 63, 64, and 65 display the trajectory allowable zones 63a, 64a, and 65a in the field of view in the respective coordinate systems. The measurement point trajectory display area 66 displays the position of zero height with the initial measurement point as the origin on the Z axis along the time axis by a line 66a, and further 5 to 6 cm as an allowable depth of compression. The area 66b is displayed along the time axis. The locus expansion area 67 displays the same line 67a as the line 66a and the same area 67b as the area 66b.

  Experienced life-saving heart massage is performed at a constant rhythm with a compression length of about 5 cm, as is apparent from the locus 70 and locus 71 displayed in the measurement point locus display area 66 and locus enlargement area 67, respectively. You can see that In addition, since the trajectory R of the two-dimensional coordinate areas 63, 64, 65 is within the trajectory allowable zones 63a, 64a, 65a, an experienced life-saving heart massager has less swinging back and forth and from side to side. It can be seen that this is an ideal one that reciprocates in the vertical direction.

  The screen 61 shown in FIG. 17 is a heart massage assisting apparatus 1 according to this embodiment that is used by a general person with little experience, but performs cardiac massage without displaying the status of cardiac massage on the monitor 11. It is an example of the screen which displayed on the monitor 11 the locus | trajectory of the recorded measurement point. The configuration of the screen 61 is the same as the screen 61 shown in FIG. The locus expansion area 67 displays the state of the heart massage in the vicinity after 120 seconds. As is clear from the locus 70 in the measurement point locus display area 66, in the case of a general person's heart massage, the compression length immediately after the start is about 5 cm, but the compression length decreases with the passage of time. In addition, there is a time zone in which the measurement points are not completely returned to the line 66a. In addition, since the trajectory R of the two-dimensional coordinate areas 64 and 65 protrudes from the trajectory allowable zones 64a and 65a, in the case of a general person's heart massage with little experience, the shake from front to back and left and right is large, and the vertical direction It can be seen that compression / release is not performed at a constant rhythm.

  The screen 61 shown in FIG. 18 is displayed on the monitor 11 when the same general person who has performed heart massage of the trajectories 70 and 71 shown in FIG. 17 performs heart massage using the heart massage support device 1 according to this embodiment. It is an example of the screen displayed on. As apparent from the two-dimensional coordinate areas 63, 64, 65, the measurement point trajectory display area 66 and the trajectory enlargement area 67 in FIG. 18, the monitor 11 shows the status of his / her heart massage using the cardiac massage support device 1. When performing heart massage while displaying, it can be seen that the number of compressions, compression length, forward and backward speeds, forward / backward / left / right fluctuations, pace fluctuations, etc. can be brought close to ideal. Although the heart massage shown in FIG. 18 is not as good as that of the experienced life-saving technician shown in FIG. 16, it can be seen that it is much better than that shown in FIG.

<Other embodiments>
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, the cardiac massage assisting apparatus 1 according to the above embodiment includes a frequency evaluation unit 36, a compression length evaluation unit 37, an uppermost point position evaluation unit 38, a lowermost point position evaluation unit 39, a round-trip time / speed evaluation unit 40, and Although the apparatus includes a plurality of evaluation means called the pace evaluation unit 41, only one of the components or any combination of two or more components may be provided. In that case, it is preferable that the alarm output processing unit 43 is a component that instructs output according to the evaluation unit.

  Moreover, the cardiac massage assistance apparatus 1 according to the above embodiment reflects the infrared rays from the infrared light emitting unit 3 by the reflection markers 8a, 8b, and 8c, and receives the reflected lights 18a, 18b, and 18c. The measurement point is determined. However, light other than infrared light, for example, visible light, may be reflected by the reflection markers 8a, 8b, and 8c. In this case, the video camera 4 captures other objects (patients P1, practitioners P2, etc.) in the imaging field in addition to the visible light, but the brightness of the reflected light 18a, 18b, 18c is around it. If it is sufficiently higher than the brightness of the object, the heart massage assisting apparatus 1 can specify each position of the reflected light 18a, 18b, 18c. Furthermore, instead of the reflective markers 8a, 8b, and 8c, a marker painted in a specific color (for example, yellow) can be used. In that case, by setting the computer program in the storage unit 31 of the cardiac massage support device 1 or the cardiac massage support computer program in the program storage memory 32 in advance so as to recognize a specific color, A specific color can be recognized and its position can be determined. However, if there is a yellow object other than the marker, there is a risk of false detection. Therefore, when determining a specific color, it is preferable to use a color that does not exist in other objects in the imaging field of view. Further, four, five, or six or more markers on the position detector 5 may be provided. In that case, it is preferable to set the center of gravity in a quadrangular, pentagonal or hexagonal polygon as a measurement point.

  The cardiac massage assisting apparatus 1 according to the above embodiment is an apparatus including the infrared light emitting unit 3, the video camera 4, and the main device 2, but lacks at least one of the infrared light emitting unit 3 and the video camera 4. It may be a device. When both the infrared light emitting unit 3 and the video camera 4 are missing, the heart massage support device 1 is only the main body device 2. On the other hand, the marker of the position detector 5 can be a light emitting source constituted by an LED or the like instead of a reflector. In that case, the heart massage support device 1 may be a device including the position detector 5. The position detector 5 may be connected to the main device 2 in a wired manner, or may not be physically connected, and may be configured to be communicable by infrared communication or the like.

  FIG. 19 shows a situation where a heart massage is performed using a heart massage support device according to another embodiment different from the embodiment shown in FIG.

  Although the cardiac massage support device 1 includes the main body device 2 and the video camera 4, the infrared light emitting unit 3 has a different configuration. Here, the infrared light emission part 3 has no role other than the light emission to the reflective markers 8a, 8b, 8c. Further, the infrared light emitting unit 3 becomes unnecessary when the marker itself emits light as described above. Therefore, the light emitting unit represented by the infrared light emitting unit 3 does not have to be an essential component of the heart massage assisting device 1.

DESCRIPTION OF SYMBOLS 1 Cardiac massage assistance apparatus 2 Main body apparatus 3 Infrared light emission part (an example of light emission means)
4 Video camera 5 Position detector 8a, 8b, 8c Reflective marker (an example of a marker)
11 Monitors 18a, 18b, 18c Reflected light 26 Measurement point determination unit (measurement point determination means)
27 Measurement point tracking unit (Measurement point tracking means)
29 Display processing unit (display processing means)
31 Storage unit (an example of memory)
36 Number evaluation section (an example of the number evaluation means, an example of the evaluation means)
37 Compression length evaluation unit (an example of compression length evaluation means, an example of evaluation means)
38 Top point position evaluation unit (an example of a trajectory evaluation unit, an example of an evaluation unit)
39 Lowermost point position evaluation unit (an example of a trajectory evaluation unit, an example of an evaluation unit)
40 Round-trip time / velocity evaluation unit (an example of round-trip time / velocity evaluation means)
41 Pace evaluation unit (an example of pace evaluation means)
43 Alarm output processing unit (an example of alarm output processing means)
63a, 63b, 63c Allowable zones G, G1, G2, Gn Center of gravity (an example of measurement points)
P2 practitioner R locus

Claims (17)

A cardiac massage support device for supporting correct treatment of cardiac massage,
A video camera for imaging at least three markers provided in a position detector fixed to the hand of a cardiac massage practitioner;
A main unit that is connected to the video camera and displays the movement of the measurement point representing the position of the position detector based on a change in the position of each of the markers imaged by the video camera;
With
In the main device,
Measurement point determination means for determining the position of the measurement point based on the position of each marker in the three-dimensional coordinates in the field of view of the video camera;
Measuring point tracking means for tracking the change in position of the measuring point;
Display processing means for displaying a change in the position of the measurement point on a monitor;
A cardiac massage support device comprising at least The marker is a reflective marker,
2. The cardiac massage assisting apparatus according to claim 1, wherein the measurement point determining unit determines the position of the measurement point based on a position of reflected light that reflects light from the light emitting unit by the reflection marker. . The main device compares the calculated data calculated from the change in the position of the measurement point with the data of the acceptable standard stored in the memory and evaluates whether the calculated data is in the acceptable standard. An evaluation means;
As a result of the evaluation by the evaluation means, an alarm output processing means for outputting an alarm when the calculated data deviates from the acceptable standard;
The cardiac massage support device according to claim 1, further comprising: The evaluation means includes number evaluation means for evaluating the number of round trips of the measurement point within a predetermined time by comparing with the allowable number of times as the allowable reference,
4. The cardiac massage support according to claim 3, wherein when the number of reciprocations of the measurement point is less than the permissible number, the alarm output processing means outputs an alarm for assisting to reach the permissible number. apparatus. The evaluation means includes a compression length evaluation means that evaluates the lowest point position of the forward path of the measurement point within a predetermined time by comparing with a range of allowable depth as the allowable reference,
When the lowest point position of the forward path of the measurement point is not within the allowable depth range, the alarm output processing means performs an output process of an alarm for assisting in entering the allowable depth range. The cardiac massage assisting device according to claim 3 or 4. The evaluation means compares the ratio of the forward time of the measurement point within the predetermined time or the speed of the forward path and the time of the return path following the forward path or the speed of the return path with the range of the allowable ratio as the allowable reference. Including round-trip time and speed evaluation means to evaluate
6. The alarm output processing unit according to claim 3, wherein when the ratio is not within the range of the allowable ratio, the alarm output processing means performs an output process of an alarm for assisting in entering the range of the allowable ratio. The cardiac massage support device according to claim 1. The evaluation means includes a trajectory evaluation means for evaluating a trajectory of the measurement point within a predetermined time by comparing with a tolerance zone as the tolerance reference,
7. The alarm output processing unit according to claim 3, wherein the alarm output processing means outputs an alarm for assisting the user to enter the tolerance zone when the locus is out of the tolerance zone. The heart massage support device according to Item.   The cardiac massage assisting apparatus according to claim 7, wherein the display processing unit displays the tolerance zone on the monitor at least during tracking of the measurement point. The evaluation unit evaluates whether or not the number of round trips of the measurement point within a predetermined period is smaller than the number of round trips of the measurement point within a predetermined period prior to the predetermined period as the acceptance criterion. Including a pace assessment means,
When the number of round trips within the predetermined period is less than the number of round trips within the previous predetermined period, the alarm output processing means outputs an alarm for assisting to increase the number of round trips. The cardiac massage support device according to any one of claims 3 to 8. A computer program for assisting cardiac massage, which can be read and executed in a cardiac massage assisting device for supporting correct treatment of cardiac massage,
Hardware constituting the cardiac massage support device
The position of the measurement point based on the position of each marker in the three-dimensional coordinates in the field of view of the video camera that images at least three markers provided in the position detection means fixed to the hand of the heart massage practitioner Measuring point determining means for determining
Measuring point tracking means for tracking the change in position of the measuring point;
A computer program for assisting cardiac massage, which functions as display processing means for displaying a change in the position of the measurement point on a monitor. Hardware constituting the cardiac massage support device,
An evaluation unit that compares the calculated data calculated from the change in the position of the measurement point with the data of the acceptance criteria stored in the memory and evaluates whether the calculated data is in the acceptance criteria;
As a result of the evaluation by the evaluation means, an alarm output processing means for outputting an alarm when the calculated data deviates from the acceptable standard;
The computer program for assisting cardiac massage according to claim 10, further functioning. The evaluation means includes number evaluation means for evaluating the number of round trips of the measurement point within a predetermined time by comparing with the allowable number of times as the allowable reference,
12. The cardiac massage support according to claim 11, wherein, when the number of round trips of the measurement point is less than the allowable number, the alarm output processing means performs an output process of an alarm that supports the allowable number of times. Computer program. The evaluation means includes a compression length evaluation means that evaluates the lowest point position of the forward path of the measurement point within a predetermined time by comparing with a range of allowable depth as the allowable reference,
When the lowest point position of the forward path of the measurement point is not within the allowable depth range, the alarm output processing means performs an output process of an alarm for assisting in entering the allowable depth range. The computer program for cardiac massage support according to claim 11 or 12. The evaluation means compares the ratio of the forward time of the measurement point within the predetermined time or the speed of the forward path and the time of the return path following the forward path or the speed of the return path with the range of the allowable ratio as the allowable reference. Including round-trip time and speed evaluation means to evaluate
14. The alarm output processing means outputs an alarm for assisting to enter the range of the allowable ratio when the ratio is not within the range of the allowable ratio. A computer program for cardiac massage support according to claim 1. The evaluation means includes a trajectory evaluation means that evaluates a trajectory of the measurement point within a predetermined time by comparing with a tolerance zone as the tolerance reference.
15. The alarm output processing unit according to claim 11, wherein when the locus is out of the permissible zone, the alarm output processing means performs an output process of an alarm that assists the user to enter the permissible zone. The computer program for cardiac massage support according to item.   16. The computer program for cardiac massage support according to claim 15, wherein the display processing means displays the tolerance zone on the monitor at least during the tracking of the measurement point. The evaluation unit evaluates whether or not the number of round trips of the measurement point within a predetermined period is smaller than the number of round trips of the measurement point within a predetermined period prior to the predetermined period as the acceptance criterion. Including a pace assessment means,
When the number of round trips within the predetermined period is less than the number of round trips within the previous predetermined period, the alarm output processing means outputs an alarm for assisting to increase the number of round trips. The computer program for cardiac massage support according to any one of claims 11 to 16.

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