Remove the fine actuator

Abstract

To provide a defibrillator which enables a user or a manager to easily recognize an abnormality of a battery even in a self test in which a current supplied from the battery is small.SOLUTION: The defibrillator comprises a processor 103, and a memory 104 for storing a computer-readable instruction. By execution of the computer-readable instruction by the processor 103, the processor 103 calculates a used amount of a battery supplying power to the defibrillator, and writes information on the used amount of the battery into a battery memory 11B. In a case where a voltage value of power supplied from the battery is a threshold value or less, the processor 103 writes battery information indicative of the absence of the remainder of the battery into the battery memory 11B.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to defibrillators. [Background technology]

[0002] Defibrillators that restore cardiac function by applying a strong electric shock for defibrillation to the heart of a patient who has suddenly suffered cardiac arrest due to ventricular fibrillation are now rapidly becoming popular. In addition, since a malfunction of a defibrillator directly threatens the life of a patient who has suffered cardiac arrest, defibrillators equipped with a self-test function that periodically self-diagnoses whether or not there is a malfunction are known. For example, Patent Document 1 discloses a defibrillator that performs a self-test at a first frequency or a second frequency. In addition, Patent Document 2 discloses a defibrillator that performs a self-test to detect battery malfunction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2016-500286 [Patent Document 2] JP 2006-043270 A Summary of the Invention [Problem to be solved by the invention]

[0004] The defibrillator disclosed in Patent Document 1 dynamically controls the frequency of self-tests to suppress battery power consumption caused by the self-tests while detecting defibrillator failures. Also, the defibrillator disclosed in Patent Document 2 notifies a maintenance center of information about a battery abnormality when a self-test is performed.

[0005] However, when a first self-test in which the current supplied from the battery is small is performed and a second self-test in which the current supplied from the battery is large is performed at an interval longer than the interval for performing the first self-test, even if a battery abnormality such as a large internal impedance is detected in the second self-test, the current supplied from the battery is small in the next first self-test, so the voltage drop is small and the battery abnormality may not be detected. Therefore, although a user or administrator can recognize a battery abnormality in the first self-test, it is desired to make it easier for users and administrators to recognize the battery abnormality.

[0006] An object of the present disclosure is to provide a defibrillator that allows a user, administrator, or the like to easily recognize an abnormality in the battery even during a self-test in which the current supplied from the battery is small. [Means for solving the problem]

[0007] A defibrillator according to one aspect of the present disclosure includes: A processor; and a memory storing computer readable instructions, Execution of the computer readable instructions by the processor causes the processor to: Calculating a battery usage of a battery that supplies power to the defibrillator; writing the information regarding the battery usage to a battery memory; When the voltage value of the power supplied by the battery is equal to or lower than a threshold value, battery information indicating that the battery has no remaining charge is written to the battery memory. Effect of the Invention

[0008] According to the present disclosure, it is possible to provide a defibrillator that allows a user, administrator, etc. to easily recognize an abnormality in the battery even during a self-test in which the current supplied from the battery is small. [Brief description of the drawings]

[0009] [Figure 1]FIG. 1 is an external view of a defibrillator according to an embodiment of the present disclosure. [Diagram 2] FIG. 1 is a block diagram showing a configuration of a defibrillator according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. For convenience of explanation, the description of the members having the same reference numbers as those already described in the description of the embodiment will be omitted. In addition, for convenience of explanation, the dimensions of each member shown in the drawings may differ from the actual dimensions of each member. <Defibrillator configuration>

[0011] 1 is an external view of a defibrillator according to an embodiment of the present disclosure. The defibrillator 1 according to the embodiment of the present disclosure includes a defibrillator body 10 (housing body) and a lid 12 that covers the defibrillator body 10, and is configured to be connectable to a battery pack 11, a cable 13, and electrode pads 14 and 15.

[0012] The battery pack 11 incorporates a battery cell 11A (see FIG. 2) and supplies power to the defibrillator body 10 for operating the defibrillator body 10 and the electrode pads 14, 15. The battery pack 11 is connected to the back side of the defibrillator body 10 in a detachable manner. The lid 12 is structured to cover the defibrillator body 10.

[0013] The main power supply of the defibrillator 1 is turned ON by pressing a power button provided on the defibrillator main body 10. The defibrillator 1 may be an automated external defibrillator (AED) in which the main power supply of the defibrillator 1 is ON when the cover 12 is open and OFF when the cover 12 is closed.

[0014] The cable 13 electrically connects the defibrillator main body 10 and the electrode pads 14, 15. The electrode pads 14, 15 are attached to an injured or sick person (subject) to enable electrocardiogram analysis and treatment such as electric shock to the injured or sick person.

[0015] The defibrillator main body 10 includes a screen display unit 100, a sound output unit 101, and an indicator 102 as a user interface.

[0016] The screen display unit 100 is a display capable of displaying illustrations, text, etc., and visually displays to the rescuer information such as how to attach the electrode pads 14, 15, how to administer an electric shock, and information as to whether the status of the defibrillator 1 is normal or abnormal.

[0017] The sound output unit 101 is a speaker that audibly notifies the rescuer of information such as how to attach the electrode pads 14, 15, how to administer an electric shock, a warning sound indicating that high voltage is being charged inside the defibrillator main body 10, a timing sound until the electric shock is administered, and information indicating whether the status of the defibrillator 1 is normal or abnormal.

[0018] The indicator 102 is composed of a lamp or the like that can light up or blink, and visually displays to the rescuer information such as whether the state of the defibrillator 1 is normal or abnormal.

[0019] 2 is a block diagram showing the configuration of a defibrillator according to an embodiment of the present disclosure. The battery pack 11 has a battery cell 11A and a battery memory 11B. The defibrillator main body 10 has a screen display unit 100, a sound output unit 101, an indicator 102, a processor 103, a memory 104, a high voltage unit 105, an electrocardiogram analysis unit 106, a current sensor 107, a voltage sensor 108, and an external communication unit 109.

[0020] When the power button is pressed and the main power supply of the defibrillator 1 is turned ON, the processor 103 reads out programs and the like stored in the memory 104, executes the programs and the like, and controls various operations of the defibrillator 1.

[0021] The processor 103 reads out image data, such as information on how to attach the electrode pads 14, 15, how to administer an electric shock, and whether the state of the defibrillator 1 is normal or abnormal, that is pre-recorded in the memory 104, and transmits the read out image data to the screen display unit 100. The screen display unit 100 displays the received image data on the screen.

[0022] The processor 103 transmits a control signal to the indicator 102, such as a lamp of the indicator 102, to inform the rescuer of the normal or abnormal state of the defibrillator 1. The indicator 102 turns on, off, or flashes based on the control signal received.

[0023] The processor 103 reads out sound data pre-recorded in the memory 104, such as a method for attaching the electrode pads 14, 15, a method for administering an electric shock, a warning sound indicating that a high voltage is being charged inside the defibrillator main body 10, a timing sound until an electric shock is administered, and information indicating whether the status of the defibrillator 1 is normal or abnormal, and transmits the read sound data to the sound output unit 101. The sound output unit 101 outputs sound based on the received sound data.

[0024] The processor 103 controls the battery cell 11A and the internal capacitor so that the internal capacitor of the high voltage unit 105 is charged by the battery cell 11A and discharged from the electrode pads 14 and 15. The current sensor 107 and the voltage sensor 108 measure the current value Is and the voltage value Vs supplied from the battery cell 11A to the defibrillator main body 10.

[0025] The processor 103 determines whether the electrode pads 14, 15 are attached to the injured person, and controls the electrode pads 14, 15 and the electrocardiogram analysis unit 106 so as to cause the electrocardiogram analysis unit 106 to perform an electrocardiogram analysis.

[0026] The memory 104 stores programs and the like for controlling various operations of the defibrillator 1. The electrocardiogram analysis unit 106 performs electrocardiogram analysis of the injured person through the electrode pads 14 and 15.

[0027] The processor 103 performs a self-test to determine whether the defibrillator 1 operates normally, that is, to diagnose whether the state of the defibrillator 1 is normal or abnormal. The processor 103 writes the result of the self-test in the memory 104 and transmits it from the external communication unit 109 to an external server. <Self-test>

[0028] The self-test for self-diagnosing whether the condition of the defibrillator 1 is normal or abnormal will now be described in detail. The processor 103 performs at least two types of self-tests: a first self-test and a second self-test.

[0029] In the first and second self-tests, at least two types of check items are performed: a check of the remaining battery capacity of battery cell 11A and a check of the battery voltage of battery cell 11A. Furthermore, based on the results of the remaining battery capacity check and the voltage check, a comprehensive determination is made as to whether the defibrillator is in a normal state or not. (Check battery level)

[0030] First, the processor 103 checks the remaining battery capacity at the start of the self-test. Specifically, the processor 103 reads the remaining battery capacity Ir of the battery cell 11A and the full battery capacity If of the battery cell 11A, which are recorded in the battery memory 11B. Here, the full battery capacity If is, for example, 2000 mAh.

[0031] Next, the processor 103 calculates the battery remaining capacity ratio Irr by comparing the battery remaining capacity Ir with the full battery capacity If, and checks the battery remaining capacity by comparing the calculated battery remaining capacity ratio Irr with a predetermined threshold Ith. Here, the predetermined threshold Ith is, for example, 5%. If the battery remaining capacity ratio Irr exceeds the predetermined threshold Ith, the processor 103 determines that the battery remaining capacity is normal. If the battery remaining capacity ratio Irr is equal to or less than the predetermined threshold Ith, the processor 103 determines that the battery remaining capacity Ir is abnormal. After the determination, the processor 103 records the determination result of the battery remaining capacity Ir in the memory 104.

[0032] The processor 103 also checks the remaining battery capacity at the end of the self-test. Specifically, the processor 103 measures the current value Is supplied from the battery cell 11A to the defibrillator main body 10. The processor 103 calculates the battery usage change amount ΔIu by integrating the measured current value Is over time. The processor 103 calculates the battery remaining capacity Ir at the end of the self-test by subtracting the battery usage change amount ΔIu from the battery remaining capacity Ir at the start of the self-test. Furthermore, the processor 103 calculates the battery remaining capacity ratio Irr at the end of the self-test by comparing the calculated battery remaining capacity Ir with the full battery capacity If, and checks the battery remaining capacity by comparing the calculated battery remaining capacity ratio Irr with a predetermined threshold Ith. If the battery remaining capacity ratio Irr exceeds the predetermined threshold Ith, the processor 103 determines that the battery remaining capacity Ir is normal. If the battery remaining capacity ratio Irr is equal to or less than the predetermined threshold Ith, the processor 103 determines that the battery remaining capacity Ir is abnormal. The processor 103 records the remaining battery charge Ir at the time of completion of the self-test in the battery memory 11B, and records in the memory 104 the determination result of the remaining battery charge.

[0033] In addition, instead of the remaining battery capacity Ir and the remaining battery capacity ratio Irr, the battery usage capacity Iu and the battery usage ratio Iur may be used as the determination targets for the battery remaining capacity check, and the processor 103 may record both the remaining battery capacity ratio Irr and the battery usage ratio Iur in the battery memory 11B. The memory 104 may store the identification information of each battery in association with the full battery capacity If of each battery, and the battery memory 11B may hold the identification information of the battery. In this case, the processor 103 may obtain the remaining battery capacity Ir and the identification information of the battery from the battery memory 11B, and read the full battery capacity If of the corresponding battery from the memory 104 based on the obtained identification information.

[0034] In this manner, by checking the remaining battery charge, it is possible to detect a battery abnormality such as the battery cell 11A not having enough power to operate the defibrillator 1. (battery voltage check)

[0035] The processor 103 checks the battery voltage by comparing the measured voltage value Vs with a predetermined threshold value Vth. If the voltage value Vs exceeds the predetermined threshold value Vth, the processor 103 determines that the battery voltage is normal. If the voltage value Vs is equal to or less than the predetermined threshold value Vth, the processor 103 determines that the battery voltage is abnormal. The processor 103 records the battery voltage determination result in the memory 104.

[0036] By carrying out the battery voltage check in this manner, it is possible to detect a battery abnormality such as a large internal impedance of the battery cell 11A. (Defibrillator status determination)

[0037] Processor 103 reads out the judgment results of the remaining battery capacity and the judgment results of the battery voltage recorded in memory 104, and comprehensively judges whether the state of defibrillator 1 is normal or abnormal based on at least the judgment results of the remaining battery capacity and the judgment results of the battery voltage. For example, if the judgment results of the remaining battery capacity and the judgment results of the battery voltage are normal, processor 103 judges the state of defibrillator 1 to be normal, and if at least one of the judgment results of the remaining battery capacity and the judgment results of the battery voltage is abnormal, processor 103 judges the state of defibrillator 1 to be abnormal. Processor 103 records the judgment result of the battery voltage in memory 104.

[0038] The processor 103 displays the result of the determination as to whether the state of the defibrillator 1 is normal or abnormal on the screen display unit 100 or the indicator 102, outputs it from the sound output unit 101, and transmits it from the external communication unit 109 to an external server.

[0039] In this manner, by determining the state of the defibrillator 1, a user, an administrator, or the like can recognize whether the state of the defibrillator 1 is normal or abnormal. (First and second self-test)

[0040] The first self-test periodically checks at least two items, namely, a remaining battery charge check and a voltage check of the battery cell 11A, at intervals such as once a day. In the first self-test, the processor 103 causes the battery cell 11A to supply a first current to the defibrillator main body 10 and measures the current value Is, thereby performing a battery remaining charge check.

[0041] The second self test periodically checks at least two types of items, the remaining battery charge check and the voltage check of the battery cell 11A, at intervals longer than the first self test, for example, once a month. In the second self-test, the processor 103 causes the battery cell 11A to supply a second current, which is greater than the first current, to the defibrillator main body 10, and measures the current value Is, thereby checking the remaining battery charge.

[0042] Comparing the first self-test and the second self-test, the magnitude of the current (first current and second current) supplied from the battery cell 11A to the defibrillator main body 10 and the interval at which the tests are performed are different.

[0043] Specifically, the second self-test charges the high-voltage unit 105 from the battery cell 11A and tests whether the high-voltage unit 105 can be properly charged, whereas the first self-test does not charge the high-voltage unit 105 from the battery cell 11A. Therefore, the second current is larger than the first current. In addition, the second self-test cannot be performed frequently because it consumes a lot of power from the battery cell 11A, and the interval at which the second self-test is performed is set longer than the interval at which the first self-test is performed. (Example)

[0044] Table 1 shows the self-test results of the defibrillator 1 according to this embodiment when the battery cell 11A is normal (the internal impedance is small).

[0045] [Table 1]

[0046] As shown in Table 1, when the first self-test is performed while the battery cell 11A is normal, the battery cell 11A does not charge the high-voltage unit 105, and a small first current is supplied from the battery cell 11A to the defibrillator main body 10. Therefore, the battery usage rate Iur and the battery remaining capacity rate Irr (hereinafter, the battery usage rate Iur and the battery remaining capacity rate Irr are also referred to as battery information) have normal values. Furthermore, since the amount of the first current is small and the voltage drop of the voltage value Vs in the voltage sensor 108 is small, the voltage value Vs does not become equal to or lower than the predetermined threshold value Vth, and the threshold determination result of the battery voltage is normal. Therefore, the state determination result of the defibrillator 1 is normal.

[0047] Based on the results of the self-test, information indicating that the defibrillator 1 is in a normal state is written to the memory 104, and battery information indicating that the battery cell 11A is normal (in Table 1, the battery usage rate Iur is 1% to 6%, and the battery remaining rate Irr is 94% to 99%) is written to the battery memory 11B.

[0048] When the second self-test is performed while the battery cell 11A is normal, a second current having a large current amount is supplied from the battery cell 11A to the defibrillator main body 10 in order to charge the high voltage unit 105 from the battery cell 11A. However, since the interval at which the second self-test is performed is long (infrequent), the battery usage change amount ΔIu is small, and the battery usage ratio Iur and the battery remaining capacity ratio Irr are normal values. Furthermore, since the battery cell 11A is normal and the internal impedance of the battery cell 11A is small, the voltage drop of the voltage value Vs at the voltage sensor 108 is small, and the voltage value Vs does not become equal to or lower than the predetermined threshold value Vth, so the threshold determination result of the battery voltage is normal. Therefore, the state determination result of the defibrillator 1 is normal.

[0049] Based on the results of the self-test, information indicating that the defibrillator 1 is in a normal state is written to the memory 104, and battery information indicating that the battery cell 11A is normal (in Table 1, the battery usage rate Iur is 5% and the battery remaining rate Irr is 95%) is written to the battery memory 11B.

[0050] To explain the self-test results of the defibrillator 1 of this embodiment when the battery cell 11A is abnormal (high internal impedance), for comparison, Table 2 shows the self-test results of a conventional defibrillator 1 when the battery cell 11A is abnormal (high internal impedance).

[0051] [Table 2]

[0052] As shown in Table 2, when the second first self-test is performed in the case where the battery cell 11A is abnormal, the battery cell 11A does not charge the high-voltage unit 105, and a small first current is supplied from the battery cell 11A to the defibrillator main body 10. Therefore, the battery usage rate Iur and the battery remaining charge rate Irr become normal values. Furthermore, because the amount of the first current is small and the voltage drop of the voltage value Vs at the voltage sensor 108 is small, the voltage value Vs does not become equal to or lower than the predetermined threshold value Vth, and the threshold determination result of the battery voltage becomes normal. Therefore, the state determination result of the defibrillator 1 becomes normal.

[0053] From the result of the self-test, information indicating that the state of the defibrillator 1 is normal is written to the memory 104, and battery information indicating that the battery cell 11A is normal (in Table 2, the battery usage ratio Iur is 2% and the battery remaining capacity ratio Irr is 98%) is written to the battery memory 11B. In this way, even if the battery cell 11A is abnormal, the amount of the first current is small in the first self-test and the voltage drop of the voltage value Vs in the voltage sensor 108 is small, so that an abnormality in the battery voltage of the battery cell 11A is not detected and information indicating that the state of the defibrillator 1 is normal is written.

[0054] In the second self-test, in order to charge the high voltage unit 105 from the battery cell 11A, a second current having a large current amount is supplied from the battery cell 11A to the defibrillator main body 10. However, since the intervals at which the second self-test is performed are long (the frequency is low), the battery usage change amount ΔIu is small, and the battery usage ratio Iur and the battery remaining capacity ratio Irr are normal values. Furthermore, since the internal impedance of the battery cell 11A is large and abnormal, the voltage drop of the voltage value Vs at the voltage sensor 108 is large, and the voltage value Vs becomes equal to or less than the predetermined threshold value Vth, and the threshold determination result of the battery voltage is abnormal. Therefore, the state determination result of the defibrillator 1 is abnormal.

[0055] Based on the results of the self-test, information indicating that the status of the defibrillator 1 is abnormal is written to the memory 104, and battery information indicating that the battery cell 11A is normal (in Table 2, the battery usage rate Iur is 5% and the battery remaining rate Irr is 95%) is written to the battery memory 11B.

[0056] In this way, the second self test is performed with a large amount of current, and therefore, an abnormality in the battery voltage of the battery cell 11A that cannot be detected by the first self test can be detected.

[0057] Incidentally, as shown in Table 2, in the self-test of the conventional defibrillator 1, if the first self-test is performed after information indicating that the defibrillator 1 is in an abnormal state is written in the second self-test to the memory 104, information indicating that the defibrillator 1 is in a normal state is overwritten in the memory 104, even though the battery cell 11A is actually abnormal. This is because the second self-test may temporarily result in an abnormality due to an abnormality in the ambient temperature, etc., and so the data is overwritten to reflect the latest test results. However, it becomes difficult to grasp the internal impedance abnormality of the battery cell 11A.

[0058] Such inconveniences have been improved by the defibrillator 1 according to this embodiment. Table 3 shows the self-test results of the defibrillator 1 according to this embodiment when the battery cell 11A is abnormal (internal impedance is large).

[0059] [Table 3]

[0060] As shown in Table 3, in the first self test, charging from the battery cell 11A to the high voltage unit 105 is not performed, and a small first current is supplied from the battery cell 11A to the defibrillator main body 10. Therefore, the battery usage rate Iur and the battery remaining charge rate Irr are normal values. Furthermore, because the amount of the first current is small and the voltage drop of the voltage value Vs at the voltage sensor 108 is small, the voltage value Vs is equal to or less than the predetermined threshold value Vth, and the threshold determination result of the battery voltage is normal. Therefore, the state determination result of the defibrillator 1 is normal.

[0061] Based on the result of the self-test, information indicating that the state of the defibrillator 1 is normal is written to the memory 104, and battery information indicating that the battery cell 11A is normal is written to the battery memory 11B.

[0062] In the second self-test, in order to charge the high voltage unit 105 from the battery cell 11A, a second current having a large current amount is supplied from the battery cell 11A to the defibrillator main body 10. However, because the interval between execution of the second self-test is long, the battery usage change amount ΔIu when the second current flows is small, and the battery usage ratio Iur and the battery remaining capacity ratio Irr are normal values. Here, because the battery cell 11A is abnormal and has a large internal impedance, the voltage drop of the voltage value Vs at the voltage sensor 108 is large, the voltage value Vs becomes equal to or smaller than the predetermined threshold value Vth, and the threshold determination result of the battery voltage is abnormal. Therefore, the state determination result of the defibrillator 1 is abnormal.

[0063] In this case, the battery usage ratio Iur and battery remaining capacity ratio Irr indicating that the battery cell 11A is abnormal (in Table 3, the battery usage ratio Iur is 100% and the battery remaining capacity ratio Irr is 0%) are written to the battery memory 11B, instead of the battery usage ratio Iur and battery remaining capacity ratio Irr calculated by the processor 103. Therefore, information indicating that the state of the defibrillator 1 is abnormal is written to the memory 104, and battery information indicating that the battery cell 11A is abnormal is written to the battery memory 11B.

[0064] As shown in Table 3, in the self-test of the defibrillator 1 according to this embodiment, battery information indicating that the battery cell 11A is abnormal in the second self-test (the third self-test in Table 3) is written in the battery memory 11B. Therefore, when the first self-test (the fourth self-test in Table 3) is subsequently performed, the remaining battery charge is determined to be abnormal in the remaining battery charge check performed at the start of the self-test because the remaining battery charge ratio Irr is equal to or less than the predetermined threshold value Ith. As a result, information indicating that the state of the defibrillator 1 is abnormal is overwritten in the memory 104.

[0065] This allows a user, administrator, etc. to easily recognize information that the state of the defibrillator 1 is abnormal even in the first self-test in which the amount of current (first current) supplied from the battery is small. Note that the fourth self-test is the first self-test in which the amount of the first current is small, and therefore the battery usage change amount ΔIu is small. However, since battery information indicating that the battery cell 11A is abnormal has already been written to the battery memory 11B, battery information indicating that the battery cell 11A is abnormal is also written to the battery memory 11B in the fourth self-test.

[0066] In the above example, when the voltage abnormality of the battery cell 11A is detected, the processor 103 writes the battery usage ratio Iur and the battery remaining capacity ratio Irr (in Table 3, the battery usage ratio Iur is 100% and the battery remaining capacity ratio Irr is 0%) indicating that the battery cell 11A is abnormal to the battery memory 11B, but this is not necessarily limited to this. For example, the processor 103 may write a flag to which a specific value (for example, "1") is set when a voltage abnormality occurs to the battery memory 11B. However, when the battery usage ratio Iur or the battery remaining capacity ratio Irr indicating an abnormality is written to the battery memory 11B, even if the battery pack 11 is used in a defibrillator of a different model number, the battery remaining capacity becomes abnormal, and the abnormality of the battery pack 11 can be grasped. In other words, when the battery usage ratio Iur or the battery remaining capacity ratio Irr indicating an abnormality is written to the battery memory 11B, the abnormality can always be detected in a defibrillator having a battery remaining capacity check function using the value of the battery memory 11B.

[0067] In addition, when a normal battery pack 11 is attached, if the attachment state is not sufficient, it may be treated as if an internal impedance abnormality occurs temporarily. Therefore, when the processor 103 detects that the battery pack 11 is attached to the defibrillator 1, the processor 103 executes the first self-test or the second self-test for a predetermined time from the time of detection, but may not write the battery information to the battery memory 11B, or may not compare the voltage value Vs with the predetermined threshold value Vth. This makes it possible to avoid battery information indicating that the battery cell 11A is abnormal being erroneously written to the battery memory 11B, even if battery removal occurs when the battery pack 11 is attached.

[0068] In addition, in the first self test and the second self test, the processor 103 may transmit battery information from the external communication unit 109 to the external server 110. This allows a user or an administrator to easily recognize the battery usage ratio Iur and the battery remaining capacity ratio Irr of the battery cell 11A.

[0069] Although the embodiment of the present disclosure has been described above, it goes without saying that the technical scope of the present disclosure should not be interpreted as being limited by the description of the embodiment. The present embodiment is merely an example, and it is understood by those skilled in the art that various modifications of the embodiment are possible within the scope of the invention described in the claims. The technical scope of the present disclosure should be determined based on the scope of the invention described in the claims and its equivalents.

[0070] For example, in the above description, the defibrillator 1 is an AED (fully automated external defibrillator), but this is not necessarily limited to this, and may be, for example, a semi-automatic external defibrillator. [Explanation of symbols]

[0071] 1 Defibrillator 10 Defibrillator body (main body) 11 Battery pack 11A Battery Cell 11B Battery Memory 12 Lid 13 Cable 14, 15 Electrode pads 100 Screen display section 101 Sound output unit 102 Indicator 103 Processors 104 Memory 105 High Pressure Unit 105A internal capacitor 106 Electrocardiogram Analysis Unit 107 Current Sensor 108 Voltage Sensor 109 External Communications Department 110 External Server

Claims

1. 1. A defibrillator configured to deliver an electric defibrillation shock to a subject's heart, comprising: The defibrillator comprises: A processor; and a memory storing computer readable instructions, Execution of the computer readable instructions by the processor causes the processor to: Calculating a battery usage of a battery that supplies power to the defibrillator; writing the information regarding the battery usage to a battery memory; when a voltage value of the power supplied from the battery is equal to or lower than a threshold value, writing battery information relating to an abnormality in the battery into the battery memory; Defibrillator.

2. Execution of the computer readable instructions by the processor causes the processor to: conducting a first self-test to obtain the voltage value by supplying a first current from the battery to the defibrillator; a second self-test is performed to obtain the voltage value by supplying a second current from the battery to the defibrillator, the second current being greater than the first current; writing the battery information relating to an abnormality of the battery to the battery memory when the voltage value is equal to or lower than the threshold value during execution of the second self-test; 2. The defibrillator of claim 1.

3. The processor controls the interval at which the second self-test is performed to be longer than the interval at which the first self-test is performed.

3. The defibrillator of claim 2.

4. Execution of the computer readable instructions by the processor causes the processor to: When the battery information relating to an abnormality of the battery is recorded in the battery memory, it is determined that the battery has an abnormality regardless of the voltage value.

4. A defibrillator as claimed in claim 2 or 3.

5. Execution of the computer readable instructions by the processor causes the processor to: writing the battery information representing that the battery usage is equal to or greater than a predetermined value, into the battery memory, when the voltage value of the power supplied from the battery is equal to or less than the threshold value; A defibrillator according to any one of claims 2 to 4.

6. The defibrillator comprises: The device further includes a capacitor that receives power from the battery and stores power for administering an electric shock, Execution of the computer readable instructions by the processor causes the processor to: In the first self-test, power is not supplied from the battery to the capacitor; In the second self-test, power is supplied from the battery to the capacitor for applying an electric shock. A defibrillator according to any one of claims 2 to 5.

7. Execution of the computer readable instructions by the processor causes the processor to: transmitting the battery information to a management server; A defibrillator according to any one of claims 1 to 6.

8. Execution of the computer readable instructions by the processor causes the processor to: Detecting that a battery pack including the battery is attached to the defibrillator; the battery information is not written to the battery memory for a predetermined time from when it is detected that the battery pack is attached to the defibrillator; A defibrillator according to any one of claims 1 to 7.

9. Execution of the computer readable instructions by the processor causes the processor to: Detecting that a battery pack including the battery is attached to the defibrillator; not comparing the voltage value with the threshold value for a predetermined time from when it is detected that the battery pack is attached to the defibrillator; A defibrillator according to any one of claims 1 to 8.

10. Execution of the computer readable instructions by the processor causes the processor to: a current value supplied from the battery is integrated with respect to time to calculate a change in the battery usage amount; 10. A defibrillator according to any one of claims 1 to 9.

Images