Inspection Equipment

Abstract

To obtain a test device that enables a user to select an accurate test and a high speed test in testing air leakage of a cuff.SOLUTION: An acquisition unit 31 acquires a mode selection signal for selecting a first mode or a second mode. When the first mode is selected, a determination unit 32 determines presence / absence of air leakage of a cuff 22 on the basis of a result of comparing an internal pressure of the cuff 22 at a point of time at which a first time has passed after a point of time of compression termination of the cuff 22 with a first threshold. When the second mode is selected, the determination unit 32 determines the presence / absence of air leakage of the cuff 22 on the basis of a result of comparing the internal pressure of the cuff 22 at a point of time at which a second time shorter than the first time has passed after the point of time of compression termination of the cuff 22 with a second threshold lower than the first threshold.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an inspection device, and more particularly to an inspection device for inspecting air leakage from a cuff used for measuring blood pressure. [Background technology]

[0002] The following Patent Document 1 discloses a blood pressure monitor equipped with a self-diagnosis unit. The self-diagnosis unit judges whether the amount of air leakage from the cuff is good or bad by comparing the amount of air leakage from the cuff with a preset threshold value while the cuff is wound in a cylindrical shape and the volume of the cuff is regulated. Specifically, after the cuff reaches the reference pressure, the self-diagnosis unit keeps the fluid system including the cuff in a closed state for a certain period (60 seconds) from a first time to a second time. Then, the self-diagnosis unit calculates the pressure difference between the pressure value of the fluid system at the first time and the pressure value of the fluid system at the second time, and judges the amount of air leakage to be "good" if the pressure difference is equal to or less than a predetermined upper limit, and judges the amount of air leakage to be "bad" if the pressure difference exceeds the upper limit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-225697 A Summary of the Invention [Problem to be solved by the invention]

[0004] The air leak inspection of blood pressure cuffs is performed by hospital staff such as nurses in between their regular duties, and performing air leak inspections of a large number of cuffs would tie up the staff in charge of the work for a long time. Therefore, it is desirable to have a function that allows the user to select whether to perform a precise inspection when the staff in charge has time and a high-speed inspection when they are busy with their regular duties.

[0005] In the blood pressure monitor disclosed in the above-mentioned Patent Document 1, the waiting time for air leakage determination is a fixed value of a certain period of time (60 seconds), and therefore the user cannot select the accuracy or required time of the test.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide an inspection device that allows a user to select between high-precision inspection and high-speed inspection in an air leak inspection for a cuff. [Means for solving the problem]

[0007] An inspection device according to one aspect of the present invention is an inspection device that inspects for air leakage from a cuff used for blood pressure measurement, and includes a connector to which a cuff to be inspected is connected, a pump that pressurizes the cuff by supplying air to the cuff via the connector, a pressure sensor that measures the internal pressure of the cuff, an alarm unit that notifies the inspection result, and a control unit, wherein the control unit includes an acquisition unit that acquires a mode selection signal that selects a first mode or a second mode, and controls the pump to inflate the cuff up to a first specified value when the first mode is selected, and controls the pump to inflate the cuff up to a second specified value lower than the first specified value when the second mode is selected. a pump control unit which controls the pump to inflate the cuff until an internal pressure of the cuff reaches a predetermined pressure; a determination unit which, when the first mode is selected, determines whether or not there is air leakage from the cuff based on a comparison result between the internal pressure of the cuff at a time when a first time has elapsed since the completion of inflation of the cuff and a first threshold value, and, when the second mode is selected, determines whether or not there is air leakage from the cuff based on a comparison result between the internal pressure of the cuff at a time when a second time, which is shorter than the first time, has elapsed since the completion of inflation of the cuff and a second threshold value which is lower than the first threshold value; and an output unit which outputs the test result based on the determination result by the determination unit.

[0008] According to this aspect, in the cuff air leakage test, the user can select between a high-precision test in the first mode and a high-speed test in the second mode.

[0009] In the above aspect, when the second mode is selected, if a first pressure value of the cuff at a first period of time after inflating the cuff begins is less than a first predetermined value, the determination unit further determines that there is an air leak in the cuff without waiting for completion of inflating the cuff to the second specified value.

[0010] According to this aspect, it is possible to further reduce the time required for inspection in the high-speed second mode.

[0011] In the above aspect, when the second mode is selected, if the second pressure value of the cuff at a second period of time that is longer than the first period from the start of inflating the cuff is less than a second predetermined value, the judgment unit further judges that an inspection error has occurred without waiting for completion of inflating the cuff to the second specified value.

[0012] According to this aspect, it is possible to further reduce the time required for inspection in the high-speed second mode.

[0013] In the above aspect, the control unit further has an alarm control unit that controls the alarm unit, and when the judgment unit determines that there is an inspection error, the alarm control unit causes the alarm unit to notify information prompting inspection in the first mode.

[0014] According to this aspect, if an inspection error occurs in the high-speed second mode, it is possible to prompt the operator to perform the inspection in the high-precision first mode.

[0015] In the above aspect, the device further includes an operation unit that is operated by an operator and inputs the operation information to the control unit, and the control unit further has an alarm control unit that controls the alarm unit, and when the alarm control unit starts to notify the test results, the alarm control unit continues to notify the test results until next operation information is input from the operation unit.

[0016] According to this aspect, even if the operator has left the testing device to perform his / her actual work after starting the execution of the test, the operator can check the test results. Effect of the Invention

[0017] According to the present invention, in testing for air leakage from a cuff, a user can select between a high-precision test and a high-speed test. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram showing a simplified external configuration of an inspection device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a simplified diagram showing the internal configuration of an inspection device. [Diagram 3] FIG. 2 is a diagram showing functions of a control unit. [Figure 4] 4 is a flowchart showing the process executed by a control unit. [Diagram 5] FIG. 11 is a diagram showing an example of pump output settings when the first mode is selected. [Figure 6] FIG. 11 is a diagram showing an example of a setting table when a first mode is selected. [Figure 7] 11 is a diagram for explaining a process of setting a first threshold value by a setting unit. FIG. [Figure 8] FIG. 11 is a diagram showing an example of pump output settings when the second mode is selected. [Figure 9] FIG. 13 is a diagram showing an example of a setting table when a second mode is selected. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that elements with the same reference numerals in different drawings indicate the same or corresponding elements.

[0020] 1 is a simplified diagram showing the external configuration of an inspection device 1 according to an embodiment of the present invention. The inspection device 1 has an alarm unit. The alarm unit includes an LCD 2, an LED 3, and a speaker 4. The inspection device 1 also has a switch 5 that is pressed when switching modes, and a switch 6 that is pressed when starting and ending an inspection. The inspection device 1 also has a plug insertion port 8 for an AC adapter, and a connector 7 to which an air hose 21 connected to a cuff 22 to be inspected is connected.

[0021] The inspection device 1 has a precision mode (first mode) and a high-speed mode (second mode) as its operation modes. An operator can operate the switch 5 to select the first mode or the second mode.

[0022] FIG. 2 is a simplified diagram showing the internal configuration of the inspection device 1. The inspection device 1 includes a control unit 11, a power supply unit 12, a pump 13, an air pressure stabilizer 14, a check valve 15, an exhaust valve 16, a branch pipe 17, and a pressure sensor 18. The control unit 11 is configured using a microcontroller or the like, and has a memory unit 50 and a voltage sensor 51. The inspection device 1 can be driven by DC power converted from a commercial power source by an AC adapter, or DC power supplied from a dry cell. When the inspection device 1 is driven by a dry cell, the voltage sensor 51 detects the output voltage value of the dry cell, which is the power supply unit 12. The air pressure stabilizer 14 is configured using a buffer tank or the like, and removes pulsating components caused by the operation of the pump 13 by smoothing. The check valve 15 allows air to flow from the air pressure stabilizer 14 toward the branch pipe 17, and regulates air to flow in the opposite direction. The exhaust valve 16 exhausts air from the cuff 22. When the pump 13 is driven with the exhaust valve 16 closed, air is sent into the cuff 22 to pressurize the cuff 22. When the pump 13 is stopped and the exhaust valve 16 is opened, the air in the cuff 22 is rapidly exhausted to the outside. The pressure sensor 18 is configured using a sensor chip including a diaphragm, a piezoelectric element, etc., and detects the pressure inside the cuff 22 (internal pressure).

[0023] 3 is a diagram showing functions of the control unit 11. The control unit 11 includes an acquisition unit 31, a determination unit 32, an output unit 33, a setting unit 34, a timing unit 35, a pump control unit 36, an exhaust valve control unit 37, and a notification control unit 38. The functions of each of these processing units are realized by a data processing device such as a CPU executing a predetermined program. The processing contents of each processing unit will be described later.

[0024] 4 is a flowchart showing the process executed by the control unit 11. The process is started when an operator operates the switch 6 to input a command to start execution of the test. Note that, before inputting the command to start execution, the operator operates the switch 5 to select the first mode or the second mode, and the selection information is stored in the storage unit 50.

[0025] First, in step S01, the acquisition unit 31 acquires from the storage unit 50 a mode selection signal for selecting the first mode or the second mode.

[0026] If the first mode is selected, then in step S02, the pump control unit 36 ​​starts driving the pump 13 with the pump output set to, for example, the maximum value, thereby starting to inflate the cuff 22. In addition, the timing unit 35 measures the elapsed time from the point in time when the pump 13 started to be driven.

[0027] Next, in step S03, the pump control unit 36 ​​determines whether the internal pressure of the cuff 22 measured by the pressure sensor 18 is a first specified value (a pressure value close to the withstand pressure of the cuff 22, for example 280 mmHg).

[0028] If the internal pressure of the cuff 22 has not reached the first specified value (step S03: NO), the pump control unit 36 ​​next determines whether or not a timeout has occurred in step S04. In the first mode, the timeout period is set to, for example, 90 seconds, and the pump control unit 36 ​​determines whether or not 90 seconds have elapsed since the start of driving the pump 13.

[0029] If the timeout has not occurred (step S04: NO), then in step S05, the pump control unit 36 ​​sets the pump output based on the voltage value detected by the voltage sensor 51 and the pressure value detected by the pressure sensor 18.

[0030] Fig. 5 is a diagram showing an example of pump output setting when the first mode is selected. Fig. 6 is a diagram showing an example of a setting table T1 that the pump control unit 36 ​​refers to for setting the pump output when the first mode is selected. The setting table T1 is created in advance and stored in the storage unit 50.

[0031] In this embodiment, when the inspection device 1 is driven by a dry cell, the maximum value of the output voltage of the power supply unit 12 is, for example, 6.0 V. When the first mode is selected, the first specified value is, for example, 280 mmHg. In the setting table T1, the pressure value of the internal pressure of the cuff 22 and the output voltage value of the dry cell are each divided into a plurality of levels, and the pump output is set corresponding to each pressure value and each output voltage value.

[0032] For example, when the output voltage value of the dry cell is 5.0V or more, if the pressure value of the cuff 22 is less than 200mmHg, the pump output is set to 100% (maximum output), if the pressure value of the cuff 22 is 200mmHg or more and less than 220mmHg, the pump output is set to 60%, if the pressure value of the cuff 22 is 220mmHg or more and less than 240mmHg, the pump output is set to 50%, if the pressure value of the cuff 22 is 240mmHg or more and less than 260mmHg, the pump output is set to 40%, and if the pressure value of the cuff 22 is 260mmHg or more, the pump output is set to 30%. In this way, if the output voltage value of the dry cell is the same level, the pump output is set to be smaller as the pressure value of the cuff 22 becomes higher.

[0033] Also, for example, when the pressure value of the cuff 22 is equal to or greater than 200 mmHg and less than 220 mmHg, the pump output is set to 60% if the output voltage value of the dry battery is equal to or greater than 5.0 V, the pump output is set to 70% if the output voltage value of the dry battery is equal to or greater than 4.5 V and less than 5.0 V, and the pump output is set to 80% if the output voltage value of the dry battery is equal to or greater than 4.0 V and less than 4.5 V. In this way, if the pressure value of the cuff 22 is at the same level, the smaller the output voltage value of the dry battery (i.e., the more depleted the dry battery is), the smaller the reduction rate with respect to the maximum output is set.

[0034] The values ​​shown in Fig. 6 are merely examples and are not limiting. The pressure and voltage levels may be further divided. When the test device 1 is driven by an AC adapter, the output voltage is fixed to a level of 5.0V or higher, and the pump output is set based only on the pressure value of the cuff 22.

[0035] As described above, if the output voltage value of the dry cell is at the same level, the pump control unit 36 ​​sets the pump output to be smaller as the pressure value of the cuff 22 increases. Therefore, as shown in Fig. 5, as the pressure value of the cuff 22 gradually increases with time, the pump output gradually decreases, and the internal pressure of the cuff 22 gradually approaches the first specified value (280 mmHg). In Fig. 5, the pump output is set to, for example, 100% until time T11, 60% during the period from time T11 to T12, 50% during the period from time T12 to T13, 40% during the period from time T13 to T14, and 30% after time T14. At time T15, the pressure value of the cuff 22 reaches the first specified value (280 mmHg).

[0036] With reference to FIG. 4, after the pump output setting process (step S05), the pump control unit 36 ​​executes the process of step S03 again.

[0037] If the internal pressure of the cuff 22 has reached the first specified value (step S03: YES), the pump control unit 36 ​​stops driving the pump 13, and then in step S06, the setting unit 34 sets a first threshold value.

[0038] 7 is a diagram for explaining the setting process of the first threshold value by the setting unit 34. When the internal pressure of the cuff 22 reaches the first specified value (pressure value P31) at time T31, the pump control unit 36 ​​stops driving the pump 13. However, since the supply of air to the cuff 22 does not immediately stop even when the driving of the pump 13 is stopped, the internal pressure of the cuff 22 rises to a pressure value P32 higher than the pressure value P31 at time T32 due to the remaining overshoot. When a certain time has passed from time T31, the temporary pressure rise due to the overshoot is alleviated, and the internal pressure of the cuff 22 drops to the pressure value P33 at time T33. The optimum value of the certain time from time T31 to time T33 is, for example, 3 seconds. Therefore, the setting unit 34 sets the first threshold value as a pressure value that is a predetermined value (e.g., 20 mmHg) lower than the reference value P33 at time T33, which is a certain time (3 seconds) after time T31 when the pump 13 is stopped, as a reference value.

[0039] In step S06, the timing unit 35 measures the elapsed time from time T33.

[0040] Next, in step S07, the determination unit 32 determines whether or not a first time has elapsed since time T33. In the first mode, the first time is set to, for example, 60 seconds, and the determination unit 32 determines whether or not 60 seconds have elapsed since time T33.

[0041] If the first time period has not elapsed (step S07: NO), the determination unit 32 repeatedly executes the process of step S07.

[0042] If the first time has elapsed (step S07: YES), then in step S08, the judgment unit 32 judges whether the internal pressure of the cuff 22 at the point in time when the first time has elapsed from time T33 (pressure value P34 at time T34 in Figure 7) is greater than or equal to the first threshold value set in step S06.

[0043] If the internal pressure of cuff 22 is equal to or higher than the first threshold value (step S08: YES), then in step S09, determination unit 32 determines that there is no air leakage in cuff 22, which is the test target.

[0044] If the internal pressure of the cuff 22 is less than the first threshold value (step S08: NO), then in step S10, the determination unit 32 determines that there is air leakage in the cuff 22 to be inspected.

[0045] Furthermore, if a timeout occurs before the internal pressure of cuff 22 reaches the first specified value (step S04: YES), pump control unit 36 ​​stops driving pump 13, and then in step S10, judgment unit 32 judges that there is an air leak in cuff 22 being inspected.

[0046] Following step S09 or step S10, the exhaust valve control unit 37 opens the exhaust valve 16 to rapidly exhaust the air in the cuff 22 to the outside, and then in step S11, the notification control unit 38 starts notifying the test result by the notification unit. If it is determined that there is no air leakage, for example, the LCD 2 displays "No air leakage", the LED 3 lights up green, and the speaker 4 outputs a completion sound indicating that the test is complete. If it is determined that there is an air leakage, for example, the LCD 2 displays "Air leakage present", the LED 3 lights up red, and the speaker 4 outputs an alarm sound indicating that there is an air leakage.

[0047] Next, in step S12, the notification control unit 38 determines whether or not operation information has been input by the operator pressing the switch 6 (or the switch 5).

[0048] If the switch 6 is not pressed (step S12: NO), the notification control unit 38 continues to execute the notification started in step S11.

[0049] If the switch 6 is pressed (step S12: YES), the notification control unit 38 stops the notification started in step S11 and ends the test.

[0050] In the first mode, the determination unit 32 constantly monitors the internal pressure of the cuff 22 based on the measured value of the pressure sensor 18. If the internal pressure of the cuff 22 exceeds an abnormality determination value (e.g., 300 mmHg), the pump control unit 36 ​​immediately stops driving the pump 13, and the exhaust valve control unit 37 immediately opens the exhaust valve 16. This prevents the cuff 22 from being damaged or bursting due to overpressure.

[0051] Returning to the explanation of step S01, when the second mode is selected, next in step S13, the pump control unit 36 ​​starts driving the pump 13 with the pump output set to, for example, the maximum value, thereby starting the inflation of the cuff 22. In addition, the timer unit 35 measures the elapsed time from the point in time when the pump 13 started to be driven.

[0052] Next, in step S14, the determination unit 32 determines whether or not a first inflation speed of the cuff 22 within a first period from the start of inflation of the cuff 22 is equal to or greater than a first predetermined value. For example, if the internal pressure of the cuff 22 is equal to or greater than 20 mmHg 15 seconds after the start of inflation of the cuff 22, the determination unit 32 determines that the first inflation speed is equal to or greater than the first predetermined value, and otherwise determines that the first inflation speed is less than the first predetermined value.

[0053] If the first inflation speed is equal to or greater than the first predetermined value (step S14: YES), then in step S15, the determination unit 32 determines whether or not a second inflation speed of the cuff 22 within a second period from the start of inflation of the cuff 22 is equal to or greater than the second predetermined value. For example, if the internal pressure of the cuff 22 is equal to or greater than 200 mmHg 30 seconds after the start of inflation of the cuff 22, the determination unit 32 determines that the second inflation speed is equal to or greater than the second predetermined value, and otherwise determines that the second inflation speed is less than the second predetermined value.

[0054] If the second inflation speed is greater than or equal to the second predetermined value (step S15: YES), then in step S16, the pump control unit 36 ​​determines whether the internal pressure of the cuff 22 measured by the pressure sensor 18 is a second specified value (a pressure value smaller than the first specified value, for example, 240 mmHg).

[0055] If the internal pressure of the cuff 22 has not reached the second specified value (step S16: NO), the pump control unit 36 ​​next determines whether or not a timeout has occurred in step S17. In the second mode, the timeout period is set to, for example, 70 seconds, and the pump control unit 36 ​​determines whether or not 70 seconds have elapsed since the start of driving the pump 13.

[0056] If the timeout has not occurred (step S17: NO), then in step S18, the pump control unit 36 ​​sets the pump output based on the voltage value detected by the voltage sensor 51 and the pressure value detected by the pressure sensor 18.

[0057] Fig. 8 is a diagram showing an example of pump output setting when the second mode is selected. Fig. 9 is a diagram showing an example of a setting table T2 that the pump control unit 36 ​​refers to for setting the pump output when the second mode is selected. The setting table T2 is created in advance and stored in the storage unit 50.

[0058] In this embodiment, when the inspection device 1 is driven by a dry cell, the maximum value of the output voltage of the power supply unit 12 is, for example, 6.0 V. When the second mode is selected, the second specified value is, for example, 240 mmHg. In the setting table T2, similar to the setting table T1, the pressure value of the internal pressure of the cuff 22 and the output voltage value of the dry cell are each divided into a plurality of levels, and the pump output is set corresponding to each pressure value and each output voltage value.

[0059] For example, when the output voltage value of the dry cell is 5.0V or more, if the pressure value of the cuff 22 is less than 160mmHg, the pump output is set to 100% (maximum output), if the pressure value of the cuff 22 is 160mmHg or more and less than 180mmHg, the pump output is set to 90%, if the pressure value of the cuff 22 is 180mmHg or more and less than 200mmHg, the pump output is set to 70%, if the pressure value of the cuff 22 is 200mmHg or more and less than 220mmHg, the pump output is set to 50%, and if the pressure value of the cuff 22 is 220mmHg or more, the pump output is set to 30%. In this way, if the output voltage value of the dry cell is the same level, the pump output is set to be smaller as the pressure value of the cuff 22 becomes higher.

[0060] Also, for example, when the pressure value of the cuff 22 is equal to or greater than 180 mmHg and less than 200 mmHg, the pump output is set to 70% if the output voltage value of the dry battery is equal to or greater than 5.0 V, the pump output is set to 80% if the output voltage value of the dry battery is equal to or greater than 4.5 V and less than 5.0 V, and the pump output is set to 90% if the output voltage value of the dry battery is equal to or greater than 4.0 V and less than 4.5 V. In this way, if the pressure value of the cuff 22 is at the same level, the smaller the output voltage value of the dry battery (i.e., the more depleted the dry battery is), the smaller the reduction rate with respect to the maximum output is set.

[0061] 9 are merely examples and are not limiting. The pressure and voltage levels may be further divided. When the test device 1 is driven by an AC adapter, the output voltage is fixed to a level of 5.0 V or higher, and the pump output is set based only on the pressure value of the cuff 22.

[0062] As described above, if the output voltage value of the dry cell is at the same level, the pump control unit 36 ​​sets the pump output to be smaller as the pressure value of the cuff 22 increases. Therefore, as shown in Fig. 8, as the pressure value of the cuff 22 gradually increases with time, the pump output gradually decreases, and the internal pressure of the cuff 22 gradually approaches the second specified value (240 mmHg). In Fig. 5, the pump output is set to, for example, 100% until time T21, 90% during the period from time T21 to T22, 70% during the period from time T22 to T23, 50% during the period from time T23 to T24, and 30% after time T24. At time T25, the pressure value of the cuff 22 reaches the second specified value (240 mmHg).

[0063] Referring to FIG. 4, after the pump output setting process (step S18), the pump control unit 36 ​​executes the process of step S16 again.

[0064] If the internal pressure of the cuff 22 reaches the second specified value (step S16: YES), the pump control unit 36 ​​stops driving the pump 13, and then in step S19, the setting unit 34 sets the second threshold value. As in the case of the first mode described above, the setting unit 34 sets the second threshold value as a pressure value that is a predetermined value (e.g., 20 mmHg) lower than the reference value, using as a reference value the pressure value at time T33, which is a certain time (e.g., 3 seconds) after the time when the driving of the pump 13 is stopped.

[0065] Furthermore, in step S19, the timer unit 35 measures the time that has elapsed since time T33.

[0066] Next, in step S20, the determination unit 32 determines whether or not a second time has elapsed since time T33. In the second mode, the second time is set to, for example, 30 seconds, and the determination unit 32 determines whether or not 30 seconds have elapsed since time T33.

[0067] If the second time has not elapsed (step S20: NO), the determination unit 32 repeatedly executes the process of step S20.

[0068] If the second time has elapsed (step S20: YES), then in step S21, the judgment unit 32 judges whether the internal pressure of the cuff 22 at the point in time when the second time has elapsed from time T33 is equal to or greater than the second threshold value set in step S19.

[0069] If the internal pressure of the cuff 22 is equal to or higher than the second threshold value (step S21: YES), then in step S22, the determination unit 32 determines that there is no air leakage in the cuff 22 to be inspected.

[0070] If the internal pressure of the cuff 22 is less than the second threshold value (step S21: NO), then in step S23, the determination unit 32 determines that there is air leakage in the cuff 22 to be inspected.

[0071] If the first inflation speed is less than the first predetermined value (step S14: NO), or if a timeout occurs before the internal pressure of the cuff 22 reaches the second specified value (step S17: YES), the pump control unit 36 ​​stops driving the pump 13, and then in step S23, the judgment unit 32 judges that there is an air leak in the cuff 22 being inspected.

[0072] Furthermore, if the second pressurization speed is less than the second predetermined value (step S15: NO), the pump control unit 36 ​​stops driving the pump 13, and then in step S24, the determination unit 32 determines that an inspection error has occurred.

[0073] Following steps S22 to S24, the exhaust valve control unit 37 opens the exhaust valve 16 to rapidly exhaust the air in the cuff 22 to the outside, and then in step S11, the notification control unit 38 starts notifying the test result by the notification unit. If it is determined that there is no air leakage, for example, the LCD 2 displays "No air leakage", the LED 3 lights up green, and the speaker 4 outputs a completion sound indicating the completion of the test. If it is determined that there is an air leakage, for example, the LCD 2 displays "Air leakage", the LED 3 lights up red, and the speaker 4 outputs an alarm sound indicating the presence of an air leakage. If it is determined that there is an inspection error, for example, the LCD 2 displays "Inspection error. Please retest in precision mode", the LED 3 flashes red, and the speaker 4 outputs an alarm sound indicating the inspection error.

[0074] Next, in step S12, the notification control unit 38 determines whether or not operation information has been input by the operator pressing the switch 6 (or the switch 5).

[0075] If the switch 6 is not pressed (step S12: NO), the notification control unit 38 continues to execute the notification started in step S11.

[0076] If the switch 6 is pressed (step S12: YES), the notification control unit 38 stops the notification started in step S11 and ends the test.

[0077] In the second mode, the determination unit 32 constantly monitors the internal pressure of the cuff 22 based on the measured value of the pressure sensor 18. If the internal pressure of the cuff 22 exceeds an abnormality determination value (e.g., 260 mmHg), the pump control unit 36 ​​immediately stops driving the pump 13, and the exhaust valve control unit 37 immediately opens the exhaust valve 16. This prevents the cuff 22 from being damaged or bursting due to overpressure.

[0078] As described above, according to the inspection device 1 of the present embodiment, the acquisition unit 31 acquires a mode selection signal for selecting the first mode (precise mode) or the second mode (high-speed mode). When the first mode is selected, the determination unit 32 determines the presence or absence of air leakage from the cuff 22 based on a comparison result between the internal pressure of the cuff 22 at a time when a first time (60 seconds) has elapsed since the completion of pressurization of the cuff 22 and a first threshold value. When the second mode is selected, the determination unit 32 determines the presence or absence of air leakage from the cuff 22 based on a comparison result between the internal pressure of the cuff 22 at a time when a second time (30 seconds) shorter than the first time has elapsed since the completion of pressurization of the cuff 22 and a second threshold value lower than the first threshold value. This allows the user to select between a high-precision inspection in the first mode and a high-speed inspection in the second mode in the air leakage inspection of the cuff 22.

[0079] Furthermore, in the testing device 1 according to the present embodiment, when the second mode is selected and the first inflation speed is less than the first predetermined value, the determining unit 32 determines that there is air leakage in the cuff 22 without waiting for the completion of inflation of the cuff 22 up to the second specified value. This makes it possible to further shorten the time required for testing in the high-speed second mode.

[0080] Furthermore, in the testing device 1 according to the present embodiment, when the second mode is selected and the second inflation speed is less than the second predetermined value, the determination unit 32 determines that a test error has occurred without waiting for the completion of inflation of the cuff 22 up to the second specified value, thereby making it possible to further shorten the time required for testing in the high-speed second mode.

[0081] Furthermore, according to the inspection device 1 of this embodiment, when the determining unit 32 determines that an inspection error has occurred in the second mode, the notification control unit 38 causes the notification unit to notify information urging the operator to perform inspection in the first mode. This makes it possible to prompt the operator to perform inspection in the high-precision first mode when an inspection error would occur in the high-speed second mode.

[0082] Furthermore, according to the inspection device 1 of this embodiment, when the notification control unit 38 causes the notification unit to start notifying the inspection result, the notification control unit 38 causes the notification unit to continue notifying the inspection result until the next operation information is input from the operation unit (switches 5 and 6). This allows the operator to check the inspection result even if the operator has left the inspection device 1 for his / her actual work after the start of the inspection. [Explanation of symbols]

[0083] 1. Inspection equipment 2 LCD 3 LED 4 Speakers 5,6 Switch 7 Connectors 11 Control section 12 Power supply section 13. Pump 18 Pressure Sensor 31 Acquisition Department 32 Judgment section 33 Output section 34 Setting section 35 Timing section 36 Pump control section 37 Exhaust valve control section 38 Notification control section 51 Voltage Sensor

Claims

1. An inspection device for inspecting air leakage from a cuff used for blood pressure measurement, comprising: a connector to which the cuff to be tested is connected; a pump that pressurizes the cuff by supplying air to the cuff through the connector; a pressure sensor for measuring the internal pressure of the cuff; A notification unit that notifies the test result; A control unit; Equipped with The control unit is an acquisition unit that acquires a mode selection signal that selects the first mode or the second mode; a pump control unit that controls the pump to inflate the cuff to a first specified value when the first mode is selected, and controls the pump to inflate the cuff to a second specified value lower than the first specified value when the second mode is selected; a determination unit which, when the first mode is selected, determines the presence or absence of air leakage from the cuff based on a comparison result between the internal pressure of the cuff at a time when a first time has elapsed since the completion of inflation of the cuff and a first threshold value, and when the second mode is selected, determines the presence or absence of air leakage from the cuff based on a comparison result between the internal pressure of the cuff at a time when a second time, which is shorter than the first time, has elapsed since the completion of inflation of the cuff and a second threshold value, which is lower than the first threshold value; an output unit that outputs the inspection result based on the determination result by the determination unit; An inspection device having the above features.

2. 2. The inspection device according to claim 1, wherein, when the second mode is selected, if a first pressure value of the cuff at a first period of time after inflation of the cuff begins is less than a first predetermined value, the determination unit determines that there is an air leak in the cuff without waiting for completion of inflation of the cuff to the second specified value.

3. 3. The testing device of claim 2, wherein the determination unit further determines that a test error has occurred when the second mode is selected and a second pressure value of the cuff at a second period of time that is longer than the first period from the start of inflating the cuff is less than a second predetermined value, without waiting for completion of inflating the cuff to the second specified value.

4. The control unit further includes a notification control unit that controls the notification unit, The inspection device according to claim 3 , wherein the notification control unit causes the notification unit to notify information prompting inspection in the first mode when the determination unit determines that an inspection error has occurred.

5. An operation unit that is operated by an operator and inputs operation information to the control unit, The control unit further includes a notification control unit that controls the notification unit, The inspection device according to any one of claims 1 to 4, wherein when the notification control unit causes the notification unit to start notifying the inspection result, the notification unit continues to notify the inspection result until the next operation information is input from the operation unit.

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