JP7227570B2 - IABP driver - Google Patents

Description

The present invention relates to an IABP driving device used to drive a driven device in IABP (intra-aortic balloon pumping) method.

In the IABP method, it is necessary to inflate and deflate the balloon placed in the aorta at appropriate timings with respect to the patient's pulsation in order to obtain a sufficient assisting effect (relief of the burden on the heart). Therefore, some drive devices used to drive the balloon of the balloon catheter in the IABP method display the internal pressure waveform of the balloon, which is the device to be driven, together with the patient's blood pressure waveform and electrocardiogram waveform. By comparing the displayed waveforms, the operator of such an IABP driver can determine whether the inflation and deflation of the balloon are timed appropriately with respect to the patient's heart beat ( See Patent Document 1).

Further, an IABP driving device has been proposed that includes an adjusting mechanism for adjusting the internal pressure of the balloon. The internal pressure adjustment mechanism of the balloon adjusts the internal pressure of the balloon when performing a procedure called volume weaning, which intentionally weakens the support function of the heart, or when the internal pressure of the balloon unintentionally becomes higher than expected. It can be used, for example, when decreasing to an appropriate range. For example, even if the same amount of shuttle gas is applied to a balloon of the same volume, the internal pressure of the balloon may become too high due to differences in the diameter and shape of the aorta where the balloon is placed, depending on the patient. In such cases, it is required to adjust the internal pressure of the balloon to an appropriate range by means of an adjustment mechanism.

However, even in a situation where it is required to adjust the internal pressure of the balloon, if the operator of the IABP driving device does not recognize that the adjustment by the adjustment mechanism is effective and does not perform appropriate operation, the balloon The state of internal pressure continues to be high. Furthermore, when the internal pressure of the balloon exceeds a predetermined upper limit value, the alarm unit of the IABP driving device performs an alarm operation, causing a problem that the driving of the balloon by the IABP driving device cannot be continued.

On the other hand, in order to avoid such an increase in the internal pressure of the balloon, it is conceivable that the controller automatically adjusts the internal pressure of the balloon. However, if a mechanism that automatically adjusts the internal pressure of the balloon is adopted, the alarm will be activated correctly in a situation where the alarm should originally detect an increase in internal pressure and perform an alarm operation, such as when the catheter tube is kink. may not be performed. Therefore, adopting a mechanism for automatically adjusting the internal pressure of the balloon poses a problem from the viewpoint of safety.

JP-A-6-315528

The present invention has been made in view of such circumstances, and relates to an IABP driving device capable of prompting the operator of the IABP driving device to recognize the timing and adjustment method for adjusting the internal pressure of the balloon.

In order to achieve the above object, the IABP driving device according to the present invention includes:
An IABP driver for mounting a balloon catheter to which a balloon is connected and for inflating and deflating the balloon,
a measurement unit that measures the internal pressure of the balloon, which is the internal pressure of the balloon;
an input unit for inputting an operation signal for adjusting the balloon internal pressure;
an adjustment unit that adjusts the amount of shuttle gas for inflating the balloon according to the operation signal, and adjusts the internal pressure of the balloon;
and a first display unit capable of constantly numerically displaying the plateau pressure of the balloon internal pressure measured by the measurement unit while the balloon is being driven.

The IABP driving device according to the first aspect of the present invention has a first display unit that always numerically displays the plateau pressure corresponding to the pressure at the time of inflation in the balloon internal pressure, so that the operator can display the numerical value of the plateau pressure. By visual recognition, the balloon internal pressure can be quickly and accurately recognized. Although the conventional IABP driving device displays the waveform of the balloon internal pressure, it is difficult to quickly read the accurate value of the plateau pressure from the waveform display of the balloon internal pressure. Therefore, it is not easy for the operator to recognize whether the balloon internal pressure is high or near the median value while the balloon is being driven. However, since the IABP driving device according to the first aspect of the present invention has the first display unit that numerically displays the plateau pressure, the operator can easily recognize the state if the balloon internal pressure is high. It is possible to obtain an opportunity to adjust the internal pressure of the balloon at a stage before the IABP driving device proceeds to an alarm operation or the like. Therefore, with such an IABP drive device, the possibility of stably continuing to drive the balloon increases.

Further, an IABP driving device according to a second aspect of the present invention is an IABP driving device that attaches a balloon catheter to which a balloon is connected and inflates and deflates the balloon,
a measurement unit that measures the internal pressure of the balloon, which is the internal pressure of the balloon;
an input unit for inputting an operation signal for adjusting the balloon internal pressure;
an adjustment unit that adjusts the amount of shuttle gas for inflating the balloon according to the operation signal, and adjusts the internal pressure of the balloon;
a second display unit for displaying the degree of adjustment by which the adjustment unit adjusts the internal pressure of the balloon according to the shuttle gas amount;
The second display unit displays when the degree of adjustment is in the first predetermined state and the plateau pressure is equal to or greater than a predetermined first value, and when the degree of adjustment is in the first state and the plateau pressure The display state is different when the pressure is less than the first value.

Even if a conventional IABP driving device has a display unit for displaying the degree of adjustment of the balloon internal pressure, the display state of the display unit is the same if the degree of adjustment is the same. However, the IABP driving device according to the second aspect of the present invention has a second display unit that displays the adjustment degree for adjusting the balloon internal pressure, and even if the adjustment degree is the same, the display state of the second display unit is , the plateau pressure is greater than or equal to a predetermined first value or less than the first value.

The first value preset in the IABP driving device is not particularly limited, but is preferably an intermediate value between a standard plateau pressure value and a high plateau pressure value that requires alarm action. . An operator of such an IABP driving device can recognize that it is effective or necessary to adjust the internal pressure of the balloon by visually recognizing the difference in the display state of the second display section. Furthermore, since the operator can obtain an opportunity to adjust the internal pressure of the balloon before the IABP driving device proceeds to an alarm operation, etc., such an IABP driving device can stably continue to drive the balloon. more likely to be possible.

Further, for example, the second display unit may have a light-emitting unit capable of switching between lighting, blinking and turning off,
The second display unit lights up the light emitting unit when the adjustment degree is in the first state and the plateau pressure is less than the first value, and the adjustment degree is in the first state. When the plateau pressure is equal to or greater than the first value, the light-emitting portion is blinked, and when the degree of adjustment is in a second state in which the amount of the shuttle gas is smaller than that in the first state, the light-emitting portion is extinguished. .

Such an IABP driving device attracts the operator's attention by blinking the light emitting part when the plateau pressure increases, and informs the operator that it is effective or necessary to adjust the internal pressure of the balloon. can be done. Further, when the operator adjusts the internal pressure of the balloon and sets the degree of adjustment to the second state, the light emitting portion is extinguished and the flashing state of the light emitting portion is cancelled. Therefore, the operator performed an operation to lower the balloon internal pressure by changing the degree of adjustment in response to the alert state in which the light-emitting portion is blinking, which was an appropriate operation required by the IABP driving device. can be recognized. Therefore, such an IABP driving device can inform the operator of the timing to adjust the internal pressure of the balloon and can inform the operator of the appropriate operation when the internal pressure of the balloon is high.

Further, for example, the IABP driving device according to the second aspect of the present invention may have a first display unit capable of always numerically displaying the plateau pressure during driving of the balloon.

Since such an IABP driving device has the first display unit that numerically displays the plateau pressure, if the balloon internal pressure is high, the operator can easily recognize the state. It is possible to obtain an opportunity to adjust the internal pressure of the balloon at the stage before proceeding to an alarm operation or the like.

Further, for example, the first display unit may display different display states when the plateau pressure is equal to or greater than a predetermined first value and when the plateau pressure is less than the first value. good.

In such an IABP driving device, the operator can recognize that the adjustment of the internal pressure of the balloon is effective or necessary by recognizing that the display state of the numerical display of the plateau pressure is different. can. Furthermore, since the operator can obtain an opportunity to adjust the internal pressure of the balloon before the IABP driving device proceeds to an alarm operation, etc., such an IABP driving device can stably continue to drive the balloon. more likely to be possible.

FIG. 1 is an overall external view of an IABP driving device according to one embodiment of the present invention. FIG. 2 is a block diagram showing the schematic structure of the IABP driving device shown in FIG. FIG. 3 is an external view of the monitor section in the first display state as viewed from the front. FIG. 4 is an external view of the monitor section in the second display state viewed from the front. FIG. 5 is an external view of the monitor section in the third display state as viewed from the front. FIG. 6 is an external view of the monitor section viewed from the front during an alarm operation by the alarm section. FIG. 7 is a flowchart showing switching control of lighting, blinking, and extinguishing of the first light emitting unit in the second display unit shown in FIG.

An IABP driving device according to the present invention will now be described in detail based on embodiments shown in the drawings.

FIG. 1 is an overall external view of an IABP driving device 10 according to one embodiment of the present invention, and FIG. 2 is a block diagram showing a schematic structure of the IABP driving device 10. As shown in FIG. The IABP driving device 10 is a driving device used to attach an IABP balloon catheter 80 to which a balloon 82 is connected and to inflate and deflate the balloon 82, as shown in FIG. The balloon catheter 80 is attached to the device body 20 of the IABP driving device 10 shown in FIG. 1 and used. A balloon 82 connected to the distal end of a balloon catheter 80 is left in the descending aorta for use. The IABP driver 10 can assist the blood circulation function of the heart by inflating and deflating the balloon 82 in time with the heartbeat.

As shown in FIG. 1, the IABP drive device 10 has a device body 20 and a monitor section 50 . Inside the device main body 20, pressure generating means for inflating and deflating the balloon 82, power source means for supplying electric power to the inflating/deflating means, and the like are accommodated. Casters 32 are attached to the lower part of the device main body 20 so that the IABP drive device 10 can be easily moved in a hospital or the like.

The monitor unit 50 is attached to the apparatus main body 20 via a monitor installation section 30 provided on the upper surface of the apparatus main body 20 . The monitor unit 50 is detachable from the device body 20 . However, the monitor unit 50 is connected to the device main body 20 via a cable or the like (not shown), receives power supply from the device main body 20, exchanges data with the device main body 20, and transmits signals. You can do input and output.

As shown in FIG. 2, inside the apparatus main body 20, pressure generating means for inflating and deflating the balloon 82 is accommodated. The pressure generating means includes a gas tank (not shown) that stores shuttle gas for inflating the balloon 82, a pressure chamber (not shown) that maintains a predetermined pressure, a pressure transmission partition device 25 (isolator) that transmits pressure, and the like. , a secondary pipe 21a connecting the pressure transmission partition device 25 and the balloon catheter 80, and a primary pipe 21b connecting the pressure transmission partition device 25, the solenoid valve 28 and the pressure chamber.

The pressure transmission partition device 25 separates the secondary pipe 21a connected to the balloon catheter 80 from the primary pipe 21b connected to the electromagnetic valve 28, and transmits pressure changes in the primary pipe 21b to the secondary pipe 21a. It has a diaphragm 26 . The primary pipe 21b is connected via an electromagnetic valve 28 to two pressure chambers having different pressures. The pressure generating means controls the connection of the solenoid valve 28, and switches and connects two pressure chambers to the primary pipe 21b to move the diaphragm 26 and transmit pressure to the secondary pipe 21a and the balloon 82. do. The fluid filled in the primary pipe 21b is not particularly limited, but air or the like is used, for example.

On the other hand, the secondary pipe 21a connected to the balloon catheter 80 is filled with a shuttle gas that flows through the balloon catheter 80 and inflates and deflates the balloon 82 . As the shuttle gas with which the balloon catheter 80 and the secondary pipe 21a are filled, helium gas having a small mass is preferably used in order to improve the responsiveness of the balloon 82, but is not particularly limited.

The secondary pipe 21a is provided with a measuring section 22 for measuring the balloon internal pressure, which is the internal pressure of the balloon 82, and an adjusting section 24 for adjusting the balloon internal pressure. The measurement unit 22 is composed of a pressure sensor or the like, and measures the internal pressure of the balloon catheter 80 filled with the shuttle gas. An internal pressure signal, which is a signal relating to the balloon internal pressure measured by the measurement unit 22 , is output to the control unit 52 of the monitor unit 50 .

The adjustment unit 24 adjusts the amount of shuttle gas flowing through the secondary pipe 21a and the balloon catheter 80 to inflate the balloon 82, and adjusts the internal pressure of the balloon. For example, the adjustment unit 24 supplies the shuttle gas to the secondary pipe 21a or discharges the shuttle gas from the secondary pipe 21a, so that the reference pressure 76b (Fig. 3 ) to adjust the balloon internal pressure.

As shown in FIG. 2, the monitor section 50 has a screen display section 54, a second display section 56, an operation signal input section 58, an alarm section 60, and an external signal input section 60c. As shown in FIG. 3, the screen display unit 54 is arranged in an area of about the upper half of the front surface of the monitor unit 50, and is composed of a display such as a liquid crystal display or an organic EL display.

As shown in FIG. 2, the screen display section 54 has a first display section 54a, a waveform display section 54b, and a blood pressure/heart rate display section 54c. As shown in FIG. 3, the first display unit 54a is arranged in the upper center of the screen display unit 54, and constantly displays the plateau pressure of the balloon internal pressure measured by the measurement unit 22 numerically while the balloon 82 is being driven. can do. Plateau pressure is the pressure inside the balloon when the balloon 82 is inflated. The plateau pressure is the pressure of the plateau 76 a seen in the internal pressure waveform 76 and is calculated by the control section 52 based on the internal pressure signal output from the measuring section 22 .

As shown in FIG. 3, the first display unit 54a displays, in addition to the plateau pressure, information on waveforms and peaks for detecting the timing of inflating and deflating the balloon 82, information on driving time, assist ratio, and the like. can be displayed. However, the display items of the first display section 54a may be changed according to driving conditions and the like. For example, the operator may be able to select the display items to be displayed on the first display section 54a.

As shown in FIG. 3, the waveform display section 54b is arranged in the center of the screen display section 54. The waveform display section 54b displays three waveforms in the order from top to bottom: an electrocardiogram waveform 72, a blood pressure waveform 74, and an internal pressure waveform 76. two waveforms are displayed side by side. Electrocardiogram waveform 72 is a display of electrocardiogram signals representative of the electrical activity of the patient's heart. An electrocardiogram signal is acquired by an electrocardiograph via electrode pads attached to the patient and input to the monitor section 50 via the external signal input section 60c shown in FIG. The control unit 52 of the monitor unit 50 displays the electrocardiogram signal input via the external signal input unit 60c as an electrocardiogram waveform 72 on the waveform display unit 54b. The electrocardiogram signal may be directly acquired by the IABP driving device 10 by incorporating an electrocardiograph in the IABP driving device 10, or via an electrocardiograph (polygraph, bedside monitor, etc.) outside the IABP driving device 10. may be obtained indirectly through

Blood pressure waveform 74 is a display of a blood pressure signal representing the patient's blood pressure. The blood pressure signal is measured using a blood pressure measuring device such as a pressure transducer attached to the balloon catheter 80 or other catheter connected to the artery and is sent to the monitor 50 via the external signal input 60c shown in FIG. is entered in The control unit 52 of the monitor unit 50 displays the blood pressure signal input via the external signal input unit 60c as the blood pressure waveform 74 on the waveform display unit 54b. Alternatively, the blood pressure signal may be obtained indirectly by having the IABP driving device 10 obtain the output signal from the polygraph after the output signal of the blood pressure measuring device is input to the polygraph.

An internal pressure waveform 76 displays an internal pressure signal representing the internal pressure of the balloon 82 . As shown in FIG. 2, the internal pressure signal is output by the measuring section 22 provided in the secondary pipe 21a of the apparatus main body 20 and input to the monitor section 50. As shown in FIG.

As shown in FIG. 3, on the right side of the screen display section 54, a blood pressure/heart rate display section 54c for numerically displaying blood pressure and heart rate is arranged. In the example shown in FIG. 3, heart rate, systolic pressure, diastolic pressure, mean pressure, and augmentation pressure are displayed in this order from the top of the blood pressure/heart rate display section 54c. The heart rate is calculated by the controller 52 based on the electrocardiogram signal, and the systolic pressure, diastolic pressure, mean pressure, and augmentation pressure are calculated by the control unit 52 based on the blood pressure signal.

As shown in FIG. 3 , the operation signal input section 58 is arranged below the front surface of the monitor section 50 . An operator of the IABP driving device 10 can input various signals related to driving the IABP driving device 10 , such as conditions for driving the balloon 82 and display conditions for the monitor 50 , via the operation signal input unit 58 .

As shown in FIG. 2, the operation signal input section 58 has an alarm cancellation section 58b for inputting a cancellation signal for canceling an alarm operation by the alarm section 60, which will be described later. As shown in FIG. 3, the alarm canceling section 58b has a push button arranged at the bottom right of the front surface of the monitor section 50. When the operator presses the push button of the alarm canceling section 58b, the alarm operation is canceled. A release signal for canceling is input to the monitor unit 50 . When a cancellation signal for canceling the alarm operation is input to the monitor unit 50, the control unit 52 controls the alarm unit 60 to stop or interrupt the alarm operation by the pilot lamp 60a and the alarm sound generator 60b.

As shown in FIG. 2, the operation signal input section 58 has an adjustment input section 58a for inputting an operation signal for adjusting the balloon internal pressure. As shown in FIG. 3, the adjustment input section 58a has two push buttons arranged on the lower right side of the front surface of the monitor section 50 and to the left of the alarm release section 58b. Among them, the upper button is a push button for increasing the balloon internal pressure, and the lower button is a push button for decreasing the balloon internal pressure.

When the operator presses the push button of the adjustment input section 58 a , an operation signal for adjusting the balloon internal pressure is input to the monitor section 50 . When an operation signal for increasing the balloon internal pressure is input, the control unit 52 of the monitor unit 50 controls the adjustment unit 24 of the apparatus main body 20 to adjust the amount of shuttle gas flowing through the secondary pipe 21a and the balloon catheter 80. is increased, the reference pressure 76b of the balloon internal pressure is increased. However, if the degree of adjustment, which will be described later, is already at the upper limit, the adjustment for increasing the balloon internal pressure is not executed.

On the other hand, when an operation signal for reducing the balloon internal pressure is input, the control unit 52 of the monitor unit 50 controls the adjustment unit 24 of the apparatus main body 20 to control the shuttle that flows through the secondary pipe 21a and the balloon catheter 80. By reducing the amount of gas, the reference pressure 76b of the balloon internal pressure is lowered. However, if the degree of adjustment, which will be described later, is already at the lower limit, the adjustment for lowering the balloon internal pressure is not executed.

The second display section 56 displays the degree of adjustment by which the adjustment section 24 in the apparatus main body 20 adjusts the balloon internal pressure according to the amount of shuttle gas. As shown in FIG. 3, the second display section 56 is arranged in the lower front portion of the monitor section 50 in the same manner as the operation signal input section 58, and in particular, is arranged directly above the adjustment input section 58a. The second display section 56 has a first light emitting section 56a, a second light emitting section 56b, and third to tenth light emitting sections. The first to tenth light-emitting portions 56a and 56b have bar-shaped light-emitting portions extending in the horizontal direction. arrayed. The first light emitting section 56a can switch between lighting, blinking and extinguishing, and the second to tenth light emitting sections 56b can switch between lighting and extinguishing.

The light emitting states of the first to tenth light emitting portions 56a and 56b of the second display portion 56 change according to the degree of adjustment of the balloon internal pressure. In the monitor unit 50 shown in FIG. 3, the degree of adjustment of the balloon internal pressure is 10 stages from 1st to 10th. (tenth stage), the second to tenth light-emitting portions 56b light up, and the first light-emitting portion 56a lights up or blinks. Further, when the adjustment degree of the balloon internal pressure is in the second state (ninth step), which is one step lower than the first state, the second to tenth light-emitting portions 56b are turned on, and the first light-emitting portion 56a is turned off. Furthermore, when the degree of adjustment of the balloon internal pressure is lowered in the eighth stage and the seventh stage, the third and fourth light emitting units are turned off in order from the top, and conversely, when the degree of adjustment of the balloon internal pressure increases, the light emitting units are turned upward. lights up.

As described above, the adjustment degree of the balloon internal pressure is changed by the operator inputting an operation signal via the adjustment input section 58a. Therefore, when an operation signal for adjusting the balloon internal pressure is input, the control unit 52 of the monitor unit 50 drives the adjustment unit 24 to adjust the amount of shuttle gas, thereby simultaneously adjusting the balloon internal pressure. , changes the display state of the second display unit 56 . The conditions for changing the lighting, blinking, and extinguishing states of the first light-emitting portion 56a will be described in detail later by showing a specific example of adjusting the balloon internal pressure.

The alarm unit 60 shown in FIG. 2 makes the operator recognize the abnormality detected by the IABP driving device 10 by performing an alarm operation. The alarm unit 60 performs visual and auditory alarm operations, for example, when the plateau pressure is equal to or higher than a predetermined second value (the details of the second value will be described later). The alarm unit 60 has a pilot lamp 60a arranged in the upper central portion of the monitor unit 50 and an alarm sound generating unit 60b. When the plateau pressure reaches or exceeds a predetermined second value, the alarm unit 60 blinks the pilot lamp 60a in red, generates a high-pitched intermittent sound from the alarm sound generating unit 60b, and the abnormality persists even after the alarm operation. Alternatively, if a cancel signal for canceling the alarm operation is not input, the driving of the balloon 82 by the pressure generating means is stopped.

The control unit 52 shown in FIG. 2 is composed of a microprocessor or the like, and controls the pressure generating means, the screen display unit 54, and other components included in the IABP driving device 10 by performing various kinds of arithmetic processing. 2 receives signals from devices other than the IABP driving device 10, such as an electrocardiograph, a blood pressure measuring device, a polygraph, and a bedside monitor. A signal input to the external signal input unit 60c may be a digital signal that can be processed by the control unit 52, or an analog signal that has not been A/D converted. When the signals are analog signals, the signal input unit 51 converts them into digital signals that can be processed by the control unit 52 and then transmits each signal to the control unit 52 .

3 to 6 are external views of the monitor unit 50 of the IABP driving device 10 driving the balloon 82 as seen from the front, FIG. 3 showing the first display state, and FIG. 4 showing the second display state. 5 shows the third display state, and FIG. 6 shows the display state during alarm operation. FIG. 7 is a flow chart for explaining the process of switching the lighting, blinking, and extinguishing of the first light-emitting portion 56a in the second display portion 56. As shown in FIG. Display processing and balloon internal pressure adjustment processing in the IABP driving device 10 will be described below with specific examples using FIGS. 3 to 7. FIG. However, the present invention is not limited to the following specific examples.

When performing the IABP method using the IABP driving device 10 shown in FIG. 2, the balloon catheter 80 is inserted from the patient's femoral artery or brachial artery and the balloon 82 is placed in the descending aorta before starting to drive the balloon 82. . Further, an electrocardiogram signal and a blood pressure signal are input to the IABP driving device 10, and the control section 52 of the IABP driving device 10 recognizes the patient's cardiac cycle. After that, the control unit 52 drives the pressure generating means of the device main body 20 to inflate and deflate the balloon 82 in accordance with the patient's cardiac cycle, thereby starting to drive the balloon 82 that assists the patient's heart function. do.

FIG. 3 shows the first display state of the monitor section 50. As shown in FIG. The control unit 52 shown in FIG. 2 displays the balloon internal pressure measured by the measurement unit 22 as the internal pressure waveform 76 on the waveform display unit 54b while the balloon 82 is being driven, and displays the plateau 76a pressure of the balloon internal pressure. The pressure is always numerically displayed on the first display section 54a. In the example shown in FIG. 3, the first display section 54a numerically displays that the plateau pressure is 140 mmHg.

The plateau pressure numerically displayed on the first display unit 54a may be calculated and updated by the control unit 52 based on the internal pressure signal from the measurement unit 22 so that the operator can recognize the internal pressure of the balloon 82 in real time. A specific calculation method is not particularly limited. For example, the control unit 52 may numerically display the plateau pressure of the balloon internal pressure corresponding to the immediately preceding cardiac cycle on the first display unit 54a, or display the plateau pressure of the balloon internal pressure corresponding to several immediately preceding cardiac cycles. may be averaged and the average value of the plateau pressure may be numerically displayed on the first display portion 54a.

The second display section 56 at the bottom right of the monitor section 50 displays the degree of adjustment of the balloon internal pressure. In the first display state shown in FIG. 56b are all illuminated. That is, the second display section 56 indicates that the degree of adjustment of the balloon internal pressure is in the first state (10th step out of 10 steps), which is the upper limit. In the specific examples shown in FIGS. 3 to 7, it is assumed that when the IABP driving device 10 starts driving the balloon 82, the adjustment degree of the balloon internal pressure is set to the first state (tenth stage), and the operator When the balloon internal pressure is not adjusted, the adjustment degree of the balloon internal pressure is in the first state (tenth stage).

FIG. 7 is a flowchart showing switching control of lighting, blinking, and extinguishing of the first light emitting portion 56a (see FIG. 3) in the second display portion 56. As shown in FIG. When the balloon 82 starts to be driven, the control unit 52 shown in FIG. 2 starts the process shown in FIG. 7 (step S001).

When determining the state of the first light emitting section 56a, the control section 52 determines whether or not the adjustment degree of the balloon internal pressure is in the first state (tenth stage) (step S002). If the adjustment degree of the balloon internal pressure is not in the first state (tenth stage), the controller 52 turns off the first light emitter 56a (step S004). On the other hand, if the adjustment degree of the balloon internal pressure is in the first state (tenth stage), the process proceeds to step S003, and the control unit 52 determines whether or not the plateau pressure is equal to or greater than a predetermined first value ( step S003).

When the adjustment degree of the balloon internal pressure is in the first state (tenth stage) (step S003), if the plateau pressure is not equal to or greater than a predetermined first value, the control unit 52 turns on the first light emitting unit 56a. (step S006), and if the plateau pressure is equal to or higher than the predetermined first value, the control unit 52 blinks the first light emitting unit 56a (step S005).

By determining the state of the first light-emitting portion 56a as shown in FIG. 7, the second display portion 56 indicates that the plateau pressure is equal to or higher than the first value even in the first state in which the adjustment degree of the balloon internal pressure is the same. The display state differs between when the plateau pressure is less than the first value and when the plateau pressure is less than the first value. In this case, the first value, which is the plateau pressure boundary value for switching between lighting and blinking of the first light emitting portion 56a, is preferably 180 to 200 mmHg (gauge pressure). In this embodiment, the case where the first value is 180 mmHg (gauge pressure) will be described as an example.

That is, the second display portion 56 in the first display state shown in FIG. , the first light emitting portion 56a in the second display portion 56 lights up. On the other hand, the second display portion 56 in the second display state shown in FIG. , the first light emitting portion 56a in the second display portion 56 blinks.

As described above, in the IABP driving device 10, when the plateau pressure increases, the display state of the second display unit 56, which indicates the degree of adjustment of the balloon internal pressure, changes. It is possible to prompt the user to do so, thereby preventing the occurrence of an alarm that the internal pressure of the balloon becomes abnormally high.

In the second display state shown in FIG. 4, the operator visually recognizes that the first light-emitting portion 56a of the second display portion 56 is blinking, thereby confirming the need for adjustment to reduce the balloon internal pressure. When recognized, the operator can input an operation signal from the adjustment input section 58a to adjust the balloon internal pressure. That is, when the operator recognizes an increase in the balloon internal pressure and inputs an operation signal to reduce the balloon internal pressure, the IABP driving device 10 adjusts the amount of shuttle gas flowing through the secondary pipe 21a and the balloon catheter 80 shown in FIG. By decreasing, the balloon internal pressure is lowered. As a result, the degree of adjustment for adjusting the balloon internal pressure changes from the first state (tenth stage) to the second state (ninth stage) in which the amount of shuttle gas is smaller than that in the first state.

When the operator inputs an operation signal from the adjustment input unit 58a and the degree of adjustment of the balloon internal pressure changes to the second state, the control unit 52 performs the processing shown in FIG. Change. FIG. 5 shows the display state (third display state) of the monitor section 50 after the balloon internal pressure is adjusted. As shown in FIG. 5, in the second display section 56 in the third display state, the first light emitting section 56a in the second display section 56 is turned off due to the adjustment degree of the balloon internal pressure being changed to the second state. (step S004 in FIG. 7).

As shown in FIG. 4, although the plateau pressure rises and the first light emitting portion 56a in the second display portion 56 blinks, if the operator does not perform an operation to adjust the balloon internal pressure, Plateau pressure may further increase. When the plateau pressure exceeds the first value at which the first light emitting portion 56a of the second display portion 56 starts blinking and reaches a second value higher than the first value, the alarm portion 60 shown in FIG. take action. The second value, which is the boundary value at which the alarm unit 60 performs the alarm operation, is, for example, 200 mmHg (gauge pressure).

As shown in FIG. 6, the alarm operation of the alarm unit 60 is visual and visual, such as blinking the pilot lamp 60a in red and intermittent alarm sounds from the alarm sound generating unit 60b (see FIG. 2). It is done by an auditory method. The operator who notices the alarm operation can cancel the alarm operation by the alarm unit 60 by inputting a cancellation signal from the alarm cancellation unit 58b of the operation signal input unit 58. FIG.

As shown in FIGS. 3 to 6, the IABP driving device 10 numerically displays the plateau pressure on the first display unit 54a. Even if there is, it can be easily recognized whether the value is close to an abnormal value. Therefore, in the IABP driving device 10, the operator can recognize that the balloon internal pressure is in a high state before the balloon internal pressure rises beyond the normal range and the alarm unit 60 performs an alarm operation. is. Further, the operator recognizes that the balloon internal pressure is high at an early stage, and inputs an operation signal as necessary to adjust the balloon internal pressure. The occurrence of this can be avoided, and the driving of the balloon 82 can be stably continued.

Further, in the IABP driving device 10, even if the display state of the second display unit 56 that displays the degree of adjustment of the balloon internal pressure is the first state (tenth stage) with the same degree of adjustment, the plateau pressure is the first state. (see FIG. 3) or the plateau pressure is less than the first value (see FIGS. 4 and 6). Therefore, by visually recognizing the difference in the display state of the second display unit 56, the operator can recognize that the adjustment of the internal pressure of the balloon 82 is effective or necessary.

Further, in the IABP driving device 10, when the balloon internal pressure becomes equal to or higher than the first value, the first light emitting unit 56a flashes to call the operator's attention, so that the operator is required to operate to lower the balloon internal pressure. You can easily recognize something. Further, when the balloon internal pressure is adjusted to the second state, the first light emitting unit 56a is turned off and the blinking state of the first light emitting unit 56a is canceled. , the user can easily recognize that an appropriate operation required by the IABP driving device 10 has been performed in response to the alert state in which the first light emitting portion 56a blinks.

As described above, the IABP driving device 10 has been described with reference to the embodiments and specific operations using the same, but the present invention is not limited to the above-described embodiments. For example, in the IABP driving device 10, the first display section 54a that displays the plateau pressure is arranged in the upper center of the screen display section 54, but the arrangement of the first display section 54a is not limited to this. It may be arranged near the display position of 76 or near the blood pressure/heart rate display section 54c.

In addition, in the IABP driving device 10, only the first light emitting unit 56a among the light emitting units included in the second display unit 56 is configured to switch between lighting and blinking according to changes in the plateau pressure. In terms of configuration, the second light-emitting portion 56b and the second to tenth light-emitting portions may also be switched between lighting and blinking according to changes in the plateau pressure. Further, the method of changing the display state of the first light emitting portion 56a that is performed in accordance with the increase in the plateau pressure is not limited to switching between lighting and blinking, and may be a change in display color or other methods.

Furthermore, in the IABP driving device 10, the first display unit 54a for numerically displaying the plateau pressure also displays when the plateau pressure is equal to or greater than the first value and when the plateau pressure is less than the first value. The states can be different. For example, when the plateau pressure is equal to or greater than a first value, the first display unit 54a numerically displays the plateau pressure in yellow blinking, and when the plateau pressure is less than the first value, numerically displays in green lighting. You may

DESCRIPTION OF SYMBOLS 10... IABP drive device 20... Device main body 21b... Primary piping 21a... Secondary piping 22... Measurement part 24... Adjustment part 26... Diaphragm 28... Solenoid valve 30... Monitor installation part 32... Caster 50... Monitor part 52... Control part 54 Screen display section 54a First display section 54b Waveform display section 54c Blood pressure/heart rate display section 56 Second display section 56a First light emission section 56b Second light emission section 58 Operation signal input section 58a Adjustment input unit 58b Alarm cancellation unit 60 Alarm unit 60a Pilot lamp 60b Alarm sound generation unit 60c External signal input unit 72 Electrocardiogram waveform 74 Blood pressure waveform 76 Internal pressure waveform 76a Plateau 76b Reference pressure 80 Balloon Catheter 82...Balloon

Claims (4)

An IABP driver for mounting a balloon catheter to which a balloon is connected and for inflating and deflating the balloon,
It is filled with a shuttle gas for inflating and deflating the balloon, has a tube connected to the balloon catheter so that the shuttle gas can flow, and is adapted to inflate and deflate the balloon in accordance with the heartbeat. pressure generating means for circulating the shuttle gas in the pipe and the balloon catheter;
a measurement unit that measures the internal pressure of the balloon, which is the internal pressure of the balloon;
an input unit for inputting an operation signal for adjusting the reference pressure of the balloon internal pressure;
an adjustment unit that adjusts the amount of shuttle gas flowing through the pipe and the balloon catheter according to the operation signal , and adjusts the level of the reference pressure of the balloon internal pressure;
a second display unit for displaying the degree of adjustment , which is the degree to which the adjustment unit adjusts the reference pressure of the balloon internal pressure,
In the second display unit, when the degree of adjustment is in a predetermined first state and the plateau pressure at the balloon internal pressure measured by the measurement unit is a standard plateau pressure value, it is necessary to perform an alarm operation. and when the degree of adjustment is in the first state and the plateau pressure is less than the first value. and different display states. The second display unit has a light-emitting unit that can switch between lighting, blinking and turning off,
The second display unit turns on the light emitting unit when the degree of adjustment is in the first state and the plateau pressure is less than the first value, and when the degree of adjustment is in the predetermined first state. and blinking the light emitting unit when the plateau pressure is equal to or higher than a predetermined first value, and blinking the light emitting unit when the degree of adjustment is in a second state in which the amount of the shuttle gas is smaller than that in the first state. 2. The IABP driving device according to claim 1, wherein the light is extinguished. 3. The IABP driving device according to claim 1, further comprising a first display unit capable of displaying numerical values of the plateau pressure at all times during driving of the balloon. 3. The display state of the first display unit differs depending on whether the plateau pressure is equal to or greater than a predetermined first value and when the plateau pressure is less than the first value. 4. The IABP driver according to 3.

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