JP2000135294A - Defibrillator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably perform defibrillation even when power supply is interrupted by providing a defibrillator for removing fibrillation of a heart by applying a prescribed current from an electrode stuck to the skin to the heart with a manual generator generating electric energy generating current to be applied to the heart. SOLUTION: When a defibrillator 1 is used, an electrode 3 is stuck to a prescribed location of the body of a patient at first and the detection of an electrocardiographic waveform is performed by an electrocardiographic waveform detecting device 6 through an electrode for measurement within the electrode 3. The detected electrocardiographic waveform is projected on a display 7 and the electrocardiographic waveform of the patient is confirmed by watching the image. The electrocardiographic waveform is monitored by a control part 8, and when an abnormality appears in the electrocardiographic waveform, an instruction to the effect that current for performing defibrillation is required to be made to flow to the heart is given by sound from an instruction means 9. By operating a switch of an operation panel 10 and rotating a lever 16 by a treating person after receiving this instruction, current is made to flow to the heart from a battery 4 which can be charged by a manual generator 15 generating power and defibrillation is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defibrillator capable of removing cardiac fibrillation by applying a predetermined current to the heart percutaneously.

[0002]

2. Description of the Related Art The heart is an organ that functions as a pump for blood, and its function is exerted by inconsistent contraction of countless myocardial cells constituting the heart. Therefore, when the myocardial cells cannot perform their unified movement, the heart's original function will not be exhibited even if the respective myocardial cells are exercising. As described above, when the myocardial cells lose unity and each of them starts to move randomly, each part of the whole heart vibrates finely, and a state called ventricular fibrillation occurs. This ventricular fibrillation can cause myocardial infarction,
It is caused by cardiomyopathy and other arrhythmias that, if left unchecked, can result in a serious condition in just a few minutes.

A defibrillator that removes cardiac defibrillation by applying a predetermined current to the heart percutaneously is conventionally used to quickly remove this dangerous ventricular fibrillation. It is a device. The defibrillator is capable of applying a predetermined current to the heart via electrodes, thereby forcing the entire heart to be excited all at once, forcing the movement of each cardiomyocyte to be unified, Removal is possible. This defibrillator plays a major role in situations involving human lives, and has been widely used in the field of emergency medicine and the like.

Here, a general defibrillator has a built-in battery and generates electric current to be supplied to the heart by electric energy charged in the battery through a general power supply (for example, a home AC power supply). . Therefore, the conventional defibrillator uses electric energy from the general power supply connected to the battery when the general power supply can be secured, and uses the electric energy stored in the battery in advance when the general power supply cannot be secured. Defibrillation is performed using energy. The defibrillator is most needed at a site where a disaster such as an earthquake has occurred. In such a place, the power supply is mostly interrupted, so that the battery has to rely on a battery to secure electric energy for performing defibrillation. However, since the amount of energy stored in the battery is naturally limited, the number of times that defibrillation can be performed is also limited. It is well known that battery performance deteriorates due to repeated charging and discharging, and defibrillation is performed less than theoretically possible when defibrillation is attempted on site. Can not be performed. Such a limitation on the number of defibrillations can lead to a loss of the benefits of the defibrillator, and an immediate improvement is desired.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve a defibrillator so that defibrillation can be performed without any limitation even when power supply is interrupted.

[0006]

The present applicant proposes the following two defibrillators as defibrillators for solving the above-mentioned problems. The first one is based on a defibrillator that can remove fibrillation of the heart by applying a predetermined current to the heart from an electrode attached to the skin, while using an electric current for generating a current to be applied to the heart. It is a defibrillator with a manual generator that generates energy. Also, its second
Is a defibrillator that can remove fibrillation of the heart by applying a predetermined current to the heart from an electrode attached to the skin, and a manual power generator that generates electrical energy for generating a current to be applied to the heart. Electric energy for generating a current to be given to the heart from either the manual generator or the general power supply, comprising a manual generator connection part connectable to the power generator and a general power supply connection part connectable to the general power supply Is a defibrillator that allows the user to input With such a defibrillator, the energy required to generate the current flowing for defibrillation can be generated at any time on the spot by a manual generator and can be input. In addition, defibrillation can be performed without limitation on the number of times, regardless of power supply. Also, with this defibrillator,
Since electric energy is generated at the site where defibrillation is necessary, even if the capacity of the battery is lower than the rated value, at least one electric energy for performing defibrillation processing can be stored. As long as the battery has the performance, no particular problem occurs. The defibrillator according to the present invention does not necessarily require a battery, but is generally considered to be applied to a defibrillator having a battery.

[0007] Here, there is no particular limitation on the structure of the manual generator itself. However, in view of the efficiency of power generation and the easiness of power generation work, the power for power generation is generated by gripping and continuous rotation. It is considered that a manual generator provided with a lever for performing the power generation or a manual generator provided with a pedal which generates power for power generation by continuously stepping on the lever is suitable for the defibrillator according to the present invention.

In addition, the defibrillator according to the present invention has an electrocardiographic waveform detector for detecting the state of the heart, monitors the electrocardiographic waveform detected by the electrocardiographic waveform detector, and determines the timing of applying a current to the heart. And a control unit for determining based on the electrocardiographic waveform. When performing defibrillation processing, it is necessary to perform the defibrillation processing at a predetermined timing in the electrocardiographic waveform. If the timing is incorrect, it may even lead to danger. Therefore, by providing the defibrillator with the above-described electrocardiographic waveform detector and control unit, defibrillation processing can be automatically performed at accurate timing, and the safety thereof can be improved. Become like In addition, even if the control unit in the defibrillator determines the timing of energization for defibrillation, it is necessary for a human to determine whether or not to perform defibrillation processing while looking at the electrocardiogram waveform. preferable. From such a viewpoint, it is necessary for the defibrillator according to the present invention to provide a display for displaying the electrocardiographic waveform detected by the electrocardiographic waveform detector and perform defibrillation in view of the electrocardiographic waveform. It is preferable to provide a mechanism for instructing the operator whether or not there is a patient. With such a mechanism, if the operator determines that it is necessary,
Since the defibrillation processing is performed at an accurate timing, the safety in the defibrillation processing is further improved. Here, the instruction to the operator regarding the necessity of performing defibrillation may be performed by any means. For example, the above-described instruction can be performed by displaying a certain mark on a display. In consideration of the fact that the processing can be performed without using the defibrillator, this instruction can be performed by voice by incorporating a speaker in the defibrillator. Conventional defibrillators are provided with an ECG waveform detector and a display for displaying ECG waveforms in order to shorten the non-use state as much as possible. Sometimes they are used as defibrillators. Therefore, by employing the above-described structure, the present defibrillator can be used at a high operation rate similar to that of the conventional product.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a defibrillator according to the present invention will be described below with reference to FIGS. The defibrillator 1 according to the present invention is roughly divided into a main body 2 and an electrode 3, and the electrode 3 is connected to a battery 4 provided in the main body 2 via a conducting wire 5.

An electrocardiographic waveform detector 6 is incorporated in the main body 2. The electrocardiographic waveform detector 6 is provided with the electrode 3
Is connected to a measurement electrode (not shown) incorporated in the
An electrocardiographic waveform can be obtained based on a signal input through the measurement electrode. The electrocardiographic waveform detector 6 includes a display 7 attached to the front of the main body, and a control unit 8 that monitors the electrocardiographic waveform and determines the timing of energizing for defibrillation based on the electrocardiographic waveform. And connected to.

The control unit 8 is connected to an instruction unit 9 including a speaker (not shown), and should perform defibrillation when the control unit 8 detects an abnormal electrocardiographic waveform. Instructions are sent from the speaker by voice. The display 7 has a backlight in consideration of night use of the defibrillator. An operation panel 10 including a number of switches for operating a defibrillator is provided next to a display provided on the front surface of the main body 2.
Is provided. FIG. 2 shows the connection states of the above-described electrocardiographic waveform detector 6, measurement electrodes, display 7, control unit 8, and instruction means 9.

The battery 4 incorporated in the main body 2 is connected to a transformer 11. This transformer 1
Inside 1, there is provided a general power supply connection portion 13 having a plug 12 connectable to a household AC power supply as a general power supply, and a manual generator connection portion 14 connectable to a manual generator. A circuit for voltage transformation is set inside each of the general power supply connection portion 13 and the manual generator connection portion 14, and the input voltage can be converted into a predetermined voltage for charging the battery 4.

The manual generator connection 14 inside the transformer 11
Is connected to a manual generator 15 incorporated in the main body 2. The manual generator 15 is provided with a rotatable lever 16 protruding from the side of the main body 2, and the electric power can be stored in the battery 4 by generating power by grasping and rotating the lever 16 continuously. It has become. In addition, the lever 16 is detachable in order to ensure easiness of transportation and handling of the defibrillator 1. As shown in FIG. 3, between the battery 4 and the electrode 3, a capacitor C and a coil L, which previously store electric energy flowing to the heart for each defibrillation process, are connected via a resistor R. An LC circuit is formed so as to include a predetermined current when the switch S is turned on.

Next, a method of using the defibrillator 1 will be described. When using the defibrillator 1, first, the electrode 3 is attached to a predetermined position on the patient's body where defibrillation treatment is likely to be performed, and the power of the defibrillator 1 is turned on. The electrode 3 has a built-in measuring electrode through which an electrocardiographic waveform detector 6 detects an electrocardiographic waveform.
Since the detected electrocardiographic waveform is displayed on the display 7, the operator confirms the electrocardiographic waveform of the patient. At this time, the control unit 8 monitors the electrocardiographic waveform, and when an abnormality appears in the electrocardiographic waveform, the instruction unit 9 to which information indicating the abnormality is input from the control unit 8 performs defibrillation. An instruction is given by voice to the effect that the current must be passed through the heart. Then, when the instruction is given, the operator operates the operation panel 1
By operating the 0 switch, a current can be passed to the heart. In this state, the control unit 8 turns on the switch S for flowing a current to the heart at a predetermined timing. As a result, the electric energy stored in the capacitor C from the battery 4 becomes a current and is supplied to the heart via the electrode 3.

The battery 4 is used as a power source for performing defibrillation or monitoring an electrocardiographic waveform.
Therefore, when the electric energy stored in the battery 4 becomes insufficient, the battery 4 is charged by rotating the lever 16 of the manual generator 15 connected to the battery 4. By repeating this charging, the defibrillation process can be performed without any limitation. On the other hand, if a general power supply can be obtained, charging is performed from the general power supply by inserting the plug 12 into an outlet (not shown).

In the defibrillator according to the present embodiment, a manual generator 15 having a lever 16 for generating power for power generation by squeezing and rotating continuously is built in the main body 1. However, instead of this, a foot-operated manual generator 15 provided with a bellows-shaped pedal and capable of generating electric power by depressing the pedal is arranged outside the main body 1, and this foot-operated manual generator 15 is provided. May be connected to the general power supply connection section 14. In addition, the defibrillator 1 described in the above embodiment includes the battery 4 for storing electric energy for performing defibrillation, but this is omitted and one defibrillation is performed. It is also possible to adopt a configuration in which necessary electric energy is directly charged into the capacitor C. However, in this case, it is necessary to provide a small battery capable of driving the electrocardiographic waveform detector 6 and the like.

[0017]

Since the defibrillator according to the present invention has a manual generator, even if the battery is deteriorated or a general power supply cannot be taken out, the defibrillator can be removed by the power generated on the spot. Fibrillation can be performed, and defibrillation can be performed without limitation by generating power as much as necessary. Therefore, the defibrillator according to the present invention is particularly effective in a disaster where it is difficult to secure power supply.

[Brief description of the drawings]

FIG. 1 is a perspective view including a partial perspective view showing a defibrillator according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a connection state of an electrocardiographic waveform detector, a measurement electrode, a display, a control unit, and an instruction unit in the defibrillator according to the embodiment of the present invention.

FIG. 3 is a circuit diagram showing a circuit provided between a battery and an electrode in the defibrillator according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Defibrillator 2 Main body 3 Electrode 4 Battery 5 Conductor 6 Electrocardiogram waveform detector 7 Display 8 Control part 9 Instruction means 10 Operation panel 11 Transformer 12 Plug 13 General power supply connection part 14 Manual power generator connection part 15 Manual power generation Machine 16 lever

Claims (5)

[Claims] 1. A defibrillator capable of removing a fibrillation of a heart by applying a predetermined current to the heart from an electrode attached to the skin, wherein the defibrillator generates electric energy for generating a current applied to the heart. A defibrillator comprising a manual generator that causes the defibrillator to operate. 2. The defibrillator according to claim 1, wherein the manual generator includes a lever that generates power for power generation by squeezing and continuously rotating. 3. The manual generator includes a pedal that generates power for power generation by continuously stepping on the power generator.
A defibrillator as described. 4. An electrocardiographic waveform detector for detecting a state of a heart, and a control unit for monitoring an electrocardiographic waveform detected by the electrocardiographic waveform detector and determining a timing of supplying a current to the heart based on the electrocardiographic waveform. The defibrillator according to any one of claims 1 to 3, comprising: 5. A defibrillator capable of removing a fibrillation of a heart by applying a predetermined current to the heart from an electrode attached to the skin, wherein the defibrillator generates electric energy for generating a current applied to the heart. A manual generator connection that can be connected to a manual generator to be connected, and a general power supply connection that can be connected to a general power supply, to generate a current to be given to the heart from either the manual generator or the general power supply Defibrillator that can input electrical energy.