JP2000102616A - Medical nitrogen monoxide inhalation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical nitrogen monoxide inhalation device incorporated to a respirator for generating only a necessary quantity of nitrogen monoxide from air or dried air at a necessary time, thus avoiding the use of a nitrogen monoxide cylinder which probably causes serious accidents on a site of medical care. SOLUTION: A capacitor 2 is charged with a high-voltage power supply 1 and a switch 3 is closed to apply a high voltage between opposite bar electrodes 4 and repeat pulse arc discharge. Air or dried air 5 is allowed to flow in the discharge to generate nitrogen monoxide. A resistor 6 is disposed for reducing the voltage of the electrodes 4 during the charging of the capacitor 2. Generated nitrogen dioxide is removed by a gas passing through heated molybdenum 7. This structure serves as a medical nitrogen monoxide inhalation device when it is incorporated to a respirator 8. 9 in the figure represents a lung for tests.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for treating patients with severe respiratory failure by producing nitric oxide from air or dry air by means of electric discharge and incorporating it into a ventilator.

[0002]

2. Description of the Related Art Nitrogen monoxide cylinders diluted with nitrogen are incorporated in a ventilator and used for treating patients with severe respiratory failure.

[0003]

Conventionally, a nitrogen-diluted nitric oxide cylinder is difficult to handle. If a cylinder regulator is mishandled or nitric oxide leaks, a serious accident at a medical site may occur. Could be.
The challenge is to develop a safe nitric oxide generator that does not use nitrogen-diluted nitric oxide cylinders.

[0004]

[0007] Air or dry air is caused to flow in a discharge area to generate nitric oxide by a discharge reaction. Simultaneous nitrogen dioxide is removed by reaction with the heated molybdenum. The nitric oxide generator is incorporated into a ventilator and used for treating patients.

[0005]

When air or dry air flows through the discharge region, nitric oxide is generated by a discharge reaction such as ionization, dissociation, and heating of oxygen and nitrogen. At the same time, a small amount of toxic nitrogen dioxide is produced, but when gas is passed through the discharge zone into the heated molybdenum, the nitrogen dioxide is converted to nitric oxide. By incorporating this into a conventional ventilator, it is possible to generate as much nitric oxide as needed and inhale it to the patient, which contains nitric oxide, which can be a serious accident at the medical site. Eliminates the need for high pressure cylinders.

[0006]

FIG. 1 shows an embodiment of the present invention. When the capacitor 2 is charged by the high-voltage power supply 1 and the switch 3 is closed, a high voltage is applied to the opposing electrode 4 to cause a pulse arc discharge. Flowing air or dry air 5 during discharge,
Produces nitric oxide. While the resistor 6 is charging the capacitor 2,
This is for reducing the voltage of the electrode 4. Capacitor is 2
0 nF and the charging voltage were 22 kV. Pulse arc discharge occurred several times a second. The concentration of nitric oxide generated at this time is adjusted to 500 ppm by changing the capacitor capacity, charging voltage, repetition frequency, flow rate, and the like. By passing the heated molybdenum 7, the generated nitrogen dioxide could be removed. By incorporating it into the respirator 8, a medical nitric oxide inhaler is obtained. The figure also shows a test lung 9.

[0007]

According to the present invention, since nitric oxide can be generated from air in a required amount when required, a storage of nitric oxide is not required, and a medical nitric oxide inhaler which does not use a NO cylinder has been developed. it can. Nitric oxide from the high-pressure cylinder leaked into the air and turned into toxic nitrogen dioxide, which made it possible to prevent serious accidents at medical sites.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 High voltage power supply 2 Capacitor 3 Switch 4 Electrode 5 Air 6 Resistance 7 Molybdenum 8 Ventilator 9 Test lung

Claims (3)

[Claims] 1. A method for producing medical nitric oxide using discharge from air or dry air. 2. A method for removing harmful nitrogen dioxide using heated molybdenum. 3. A respirator incorporating a nitric oxide generator.