JP2023088280A - Treatment auxiliary apparatus - Google Patents

Abstract

To provide a treatment auxiliary apparatus capable of effectively taking measures against an instantaneous voltage drop without increasing a size and a manufacturing cost.SOLUTION: A treatment auxiliary apparatus 1 that operates in order to assist an apparatus 10 used for medical treatment includes: a load device 16 that performs operation to assist the apparatus 10; a control device 15; and a power supply device 13 for supplying power to the control device 15 and the load device 16. The power supply device 13 includes a control side power supply 13A for supplying power to the control device 15 and a load side power supply 13B for supplying power to the load device 16. The load side power supply 3B has a larger power supply capacity than the control side power supply. When the amount of power supplied to the power supply device 13 is abruptly reduced, the load side power supply 3B stops operation and only the control side power supply 13A continues operation.SELECTED DRAWING: Figure 2

Description

The present invention relates to therapeutic aids.

Conventionally, a medical device (for example, an oxygenator) used in open-heart surgery, assisted circulation, etc. has a heat exchanger for adjusting the body temperature (blood temperature) of a patient. Since such a heat exchanger requires cold water or hot water, it is connected to treatment auxiliary equipment such as a cold water/hot water supply device that supplies cold water or hot water (see, for example, Patent Document 1).

Such treatment assisting equipment requires countermeasures against an instantaneous voltage drop (instantaneous sag) phenomenon in which the power supply to the medical equipment is momentarily stopped or reduced due to a lightning strike or the like. As a countermeasure against instantaneous voltage drops in conventional treatment assistance equipment, a secondary battery or an uninterruptible power supply (UPS: Uninterruptible Power Supply) is installed.

JP-A-09-026293

As described above, if the operation of the internal electrical components of a therapeutic assistance device stops due to a voltage drop, serious problems such as harm to the patient and delay in treatment will occur. Requires countermeasures. On the other hand, installing a secondary battery, a UPS, or the like as a countermeasure against the voltage drop is not desirable from the viewpoint of increasing the size and manufacturing cost of the treatment assistance equipment. In addition, it is necessary to move treatment assisting equipment between wards (for example, from ICU to general ward), and miniaturization of size is required.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a therapeutic assistance device capable of effectively coping with an instantaneous voltage drop without increasing the size and manufacturing cost.

A therapeutic assisting device according to the present invention is a therapeutic assisting device that operates to assist a device used in medical care, and includes a load device that operates to assist the device, a control device, the control device, and a power supply that supplies power to the load device, the power supply having a control-side power supply that supplies power to the control device and a load-side power supply that supplies power to the load device; The load-side power supply consumes more power than the control-side power supply, and when the amount of power supplied to the power supply device suddenly drops, the load-side power supply stops operating, and only the control-side power supply continue operation.

Moreover, it is preferable that the control-side power supply is designed so that the ratio of power supply capacity to power consumption is larger than that of the load-side power supply.

In addition, it is preferable that the treatment auxiliary equipment does not include a power supply device other than the power supply device.

In addition, the treatment assisting device further includes a tank for storing cold water or hot water, a circulation pump for circulating the cold water or hot water, and a temperature controller for adjusting the temperature of the cold water or hot water, and the load device is , the circulating pump, the blower fan and the Peltier module, and the treatment auxiliary device is preferably a device that supplies the cold water or hot water to the device.

ADVANTAGE OF THE INVENTION According to this invention, the treatment assistance apparatus which can effectively take measures against an instantaneous voltage drop can be provided, without increasing a size and manufacturing cost.

FIG. 2 is a schematic diagram showing the physical configuration of a treatment assistance device according to this embodiment; It is a figure which shows the electrical structure of the treatment assistance apparatus which concerns on this embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram showing the physical configuration of a treatment assistance device 1 according to this embodiment. The treatment assistance equipment 1 operates to assist equipment used in medical care. For example, the therapeutic assistance device 1 is a cold/hot water tank that supplies cold water or hot water to a heat exchanger of a medical device 10 (device) such as an oxygenator.

As shown in FIG. 1 , the treatment assistance equipment 1 includes a housing 2 , a tank 3 , a circulation pump 4 , a temperature control unit 5 and a valve 6 . In addition to the configuration shown in FIG. 1, the treatment assisting device 1 has another configuration for functioning as a cold/hot water tank, but the description of the other configuration is omitted in this embodiment.

The housing 2 accommodates therein a tank 3, a circulation pump 4, a temperature control unit 5, a valve 6 and the like.
The tank 3 stores cold water or hot water returned from the medical device 10 via the return line L1 and temperature-controlled in the temperature control unit 5, which will be described later. Moreover, the tank 3 sends out the stored cold water or warm water to the circulation pump 4 via the water supply line L2.

A return line L1 indicates a route of cold or hot water returned from the medical device 10 to the medical device 1, and a water supply line L2 indicates a route of cold or hot water supplied from the medical device 1 to the medical device 10. show. The return line L1 and the water supply line L2 are composed of tubes and pipes for circulating cold water or hot water.

The circulation pump 4 pressurizes cold water or hot water supplied from the tank 3 and supplies it to the medical device 10 via the valve 6 .
The temperature control unit 5 heats or cools the cold water or hot water returned from the medical device 10 to adjust it to a predetermined temperature. The water temperature-controlled by the temperature control unit 5 is stored in the tank 3 .

FIG. 2 is a diagram showing the electrical configuration of the treatment assistance device 1 according to this embodiment. As shown in FIG. 2 , the therapeutic assistance device 1 includes a power supply unit 7, an inlet unit 11, a switch unit 12, a power supply device 13, a control device 15, a load device 16, and a shield unit 17. Prepare.

The power supply unit 7 has a power cord and a power plug 8, and a protective grounding wire 9, acquires power (alternating current) from an external power source, and supplies the acquired power to each component of the treatment assistance device 1. .
The inlet section 11 has a fuse, a noise filter, an inlet filter, etc., and performs predetermined processing on the alternating current supplied from the power supply section 7 .

The switch section 12 is provided between the inlet section 11 and the power supply device 13 and switches ON/OFF of the connection between the inlet section 11 and the power supply device 13 .

The power supply device 13 converts an alternating current supplied via the power supply section 7, the inlet section 11 and the switch section 12 into a direct current. The power supply device 13 has a control-side power supply 13A and a load-side power supply 13B.

The control-side power supply 13A and load-side power supply 13B each have a primary circuit, a secondary circuit, and an isolation transformer. The control-side power supply 13A converts the supplied AC current into a DC current and supplies the converted AC current (power) to the control device 15 . The load-side power supply 13B converts the supplied alternating current into direct current and supplies the converted alternating current (power) to the load device 16 .

The control device 15 controls the main body of the therapeutic assistance device 1 . The control device 15 has a touch panel 151 , a temperature controller 152 , a temperature alarm 153 and a single-phase current relay 154 . The control device 15 is configured by a device with low power consumption.

The touch panel 151 accepts an input operation from the user and operates each component according to the accepted processing content.
The temperature adjuster 152 functions as part of the temperature adjustment unit 5 described above and performs control for temperature adjustment.
The temperature alarm 153 generates an alarm sound to notify danger when the temperature of cold water or hot water exceeds or falls below a preset temperature.
Single-phase current relay 154 monitors overcurrent in load device 16 .

The load device 16 operates to assist the medical device 10 . The load device 16 includes a circulation pump 4, a first blower fan 161, a second blower fan 162, a third blower fan 163, a fourth blower fan 164, a first Peltier module 165, and a second Peltier module 166. and a solid state relay (SSR) 167 .

The first blower fan 161 , the second blower fan 162 , the third blower fan 163 , and the fourth blower fan 164 blow air to cool each component in the therapeutic assisting device 1 .
The 1st Peltier module 165 and the 2nd Peltier module 166 function as a part of temperature control unit 5 mentioned above, and heat or cool cold water or hot water.

The first Peltier module 165 and the second Peltier module 166 each have a Peltier element. A Peltier device is a plate-shaped device in which P-type semiconductors and N-type semiconductors are alternately arranged. When a direct current is passed through the Peltier element, heat moves on both sides of the Peltier element, one side generates heat and rises in temperature, and the other side absorbs heat and drops in temperature. The first Peltier module 165 and the second Peltier module 166 heat and cool cold water or hot water by switching the direction of direct current input to the Peltier element.

The SSR 167 turns on the third blower fan 163, the fourth blower fan 164, the first Peltier module 165, and the second Peltier module 166 only while the DC current is applied as the input signal. The third blower fan 163, the fourth blower fan 164, the first Peltier module 165 and the second Peltier module 166 are turned off.

The shield section 17 is composed of a protective grounded metal shield, and electrically shields the inlet section 11 , the switch section 12 , the power supply device 13 , the control device 15 and the load device 16 .

The load-side power supply 13B according to the present embodiment consumes a large amount of power in the load device 16 (especially the first Peltier module 165 and the second Peltier module 166), so it consumes more power than the control-side power supply 13A. When an instantaneous voltage drop (instantaneous sag) phenomenon occurs due to a lightning strike or the like, and the amount of power supplied to the power supply device 13 suddenly drops, the load-side power supply 13B stops operating, and the control-side power supply with low power consumption stops its operation. Only power supply 13A continues to operate.

As described above, the treatment assisting device 1 according to the present embodiment includes the control-side power supply 13A that supplies power to the control device 15, which has a power supply device 13 configured to consume less power, and a device configuration that consumes a large amount of power. When the amount of power supplied to the power supply device 13 suddenly drops, the load power supply 13B, which consumes a large amount of power, stops operating. Then, only the control-side power supply 13A, which consumes less power, continues to operate.

As a result, even when an instantaneous voltage drop (instantaneous drop) phenomenon occurs, the treatment assisting device 1 continues the operation of the control device 15 by the control-side power supply 13A, and effectively takes measures against the instantaneous voltage drop. be possible. Furthermore, since the power supply device 13 of the treatment assistance device 1 does not have any extra equipment for countermeasures against instantaneous voltage drops, the size of the treatment assistance device 1 can be made compact, and the manufacturing cost can be reduced. .

Furthermore, in the past, the control system such as the control device stopped operating when there was a momentary power failure, so in order to restart it, a human operation such as pressing the power button or the like was required. was. However, in the therapeutic assisting device 1 according to the present embodiment, the operation of the control device 15 can be continued even after recovery from the voltage sag, so the control of the load device 16 can be automatically restarted. Therefore, the therapeutic assisting device 1 can continue medical treatment without requiring human operation.

Moreover, the ratio of the power supply capacity to the power consumption in the control-side power supply 13A is designed to be larger than the ratio of the power supply capacity to the power consumption in the load-side power supply 13B. For example, when the power consumption is 10 W, the power supply capacity of the control-side power supply 13A is set to 100 W, and when the power consumption is 300 W, the power supply capacity of the load-side power supply 13B is set to 400 W. Also, the ratio of the power supply capacity to the power consumption in the control-side power supply 13A is preferably 300% or more and 1250% or less.

In this manner, the treatment assisting device 1 is designed so that the ratio of the power supply capacity to the power consumption of the control-side power supply 13A is larger than the ratio of the power supply capacity to the power consumption of the load-side power supply 13B. In the event that an instantaneous sag occurs, the operation of the control-side power source 13A can be continued.

In addition, the treatment assistance device 1 according to this embodiment does not include a power supply device (for example, a secondary battery, a UPS, etc.) other than the power supply device 13 . As a result, since the treatment assistance device 1 does not include a power supply device other than the power supply device 13, the size of the treatment assistance device 1 can be made compact, and the manufacturing cost can be reduced.

In addition, in the therapeutic assisting device 1 according to this embodiment, the load device 16 includes the circulation pump 4, the first blower fan 161, the second blower fan 162, the third blower fan 163, the fourth blower fan 164, and the first Peltier Having a module 165 and a second Peltier module 166 , the treatment auxiliary device 1 is a cold/hot water tank that supplies cold water or hot water to the medical device 10 . By having such a configuration, the treatment assistance device 1 is small in size and can function as a hot and cold water bath with low power consumption.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. Moreover, the effects described in the present embodiment are merely enumerations of the most suitable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the present embodiment.

For example, in the above-described embodiment, the power supply device 13 is divided into two, ie, the control-side power supply 13A and the load-side power supply 13B, but the present invention is not limited to this. That is, the power supply device may be divided into two or more control-side power supplies and/or two or more load-side power supplies.

In addition, in the above-described embodiment, an example of a hot and cold water tank as the therapeutic assistance device 1 has been described, but the present invention is not limited to this, and can be applied to other therapeutic assistance devices that are not equipped with a secondary battery or UPS. It is possible. Note that the treatment assisting equipment refers to a device that does not directly participate in treatment, but detects/displays information necessary for treatment, and as a result brings about an effect in treatment or medical equipment. Specifically, therapeutic assisting devices include devices for monitoring blood components such as gas blenders, and monitors such as pressure monitors and drip monitors.

1 Treatment Auxiliary Device 2 Housing 3 Tank 4 Pump 5 Temperature Control Unit 6 Valve 7 Power Supply Unit 8 Power Cable 9 Power Cord and Power Plug 10 Medical Equipment (Equipment)
REFERENCE SIGNS LIST 11 inlet section 12 switch section 13 power supply device 13A control side power supply 13B load side power supply 15 control device 16 load device 17 shield section

Claims (5)

A treatment assisting device that operates to assist a device used in medical care,
a load device that performs an operation to assist the equipment;
a controller;
a power supply device that supplies power to the control device and the load device,
The power supply device
a control-side power source that supplies power to the control device;
a load-side power supply that supplies power to the load device;
The load-side power supply has a larger power supply capacity than the control-side power supply,
When the amount of power supplied to the power supply device suddenly drops, the load-side power supply stops operating, and only the control-side power supply continues to operate.
therapeutic aids. 2. The treatment assisting device according to claim 1, wherein the ratio of power supply capacity to power consumption in said control-side power supply is designed to be greater than the ratio of power supply capacity to power consumption in said load-side power supply. 3. The treatment assisting device according to claim 1, wherein a ratio of power supply capacity to power consumption in said control-side power supply is 300% or more and 1250% or less. The treatment assistance device according to any one of claims 1 to 3, wherein the treatment assistance device does not include a power supply device other than the power supply device. The therapeutic assisting device comprises:
a tank for storing cold water or hot water;
a circulation pump for circulating the cold water or hot water;
A temperature controller that adjusts the temperature of the cold water or hot water,
The load device has the circulation pump, a blower fan and a Peltier module,
The treatment auxiliary device is a device that supplies the cold water or hot water to the device,
5. A therapeutic aid device according to any one of claims 1 to 4.

Images