JPS5810573Y2 - Low-temperature gas injection device for local cooling to treat “pain” such as rheumatism - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a low-temperature gas injection device for local cooling in the treatment of pain such as rheumatism, which is used for pain relief and treatment by rapidly cooling the affected area of rheumatism and the like.

Generally, this type of treatment uses liquefied nitrogen (-196°C), which is then vaporized to a temperature of around -100°C and injected directly onto the affected area to maintain the affected area at a level that does not cause frostbite. However, in this case, if nitrogen gas is continuously released into the room in a treatment room of a hospital with little ventilation, the nitrogen concentration in the room will increase, resulting in a state of oxygen deficiency, which has a negative effect on the human body. There are drawbacks to giving.

Furthermore, conventional methods have been considered to use snow-like carbon (dry ice) or cryosurgical probes on the affected area, but in this case, the cooling effect cannot be obtained unless they come into contact with the skin, and direct contact can cause frostbite. There was a huge risk of it happening.

This invention solves the drawbacks of the above-mentioned treatment methods and prevents the risk of oxygen deficiency. A supply tube and a suction tube are inserted into the liquefied nitrogen container, and the end of the suction tube and a hose from the oxygen container are connected to a mixer. A spray body equipped with a switch is connected to a mixer via a flexible tube, and its features are that the spray body is extremely lightweight and can be easily operated for treatment. It is.

Furthermore, it reliably prevents the risk of oxygen deficiency in treatment rooms, etc., does not require extensive equipment, and can be easily moved to various locations to provide pain relief and treatment with reliable operation. It is.

Next, one embodiment of this invention will be explained with reference to the drawings. A machine base 1 made of metal or the like in various shapes has a liquefied nitrogen container 2 connected to a liquefied nitrogen tank 17 on the upper part, and an oxygen The container 3 is placed side by side.

The liquefied nitrogen container 2 has the liquefied nitrogen tank 17 inside.
The tip of the supply tube 8 and the lower end of the suction tube 9 are inserted and housed.

Further, inside the liquefied nitrogen container 2, a top and bottom liquid level sensor 10 is installed to detect the amount of liquefied nitrogen.

The suction tube 9 is made of direct air insulation, and its upper end is connected to the mixer 4 for mixing with oxygen.

The mixer 4 is connected to an oxygen gas hose 12 equipped with a solenoid valve 5 connected to the oxygen container 3 and a pressure regulator 11.

Further, a vacuum-insulated flexible chiny-pro is connected to the mixer, and a sprayer 7 is attached to the tip of the tube 6.

The spray body 7 has a grip 13 provided with a switch 14.
A nozzle 15 for injection is formed at the tip.

The spray body 7 is provided with a temperature sensor 16 connected to a power cord 22 at a predetermined position.

This temperature sensor 16 is connected to an alarm thermometer 20,
A solenoid valve 18 is installed in the middle of the supply tube 8 from the liquefied nitrogen tank 17, and a control device 19 with a liquid level alarm is connected to the solenoid valve 18.

The liquid level alarm control device 19 is connected to the upper and lower liquid level sensors 10 via a power cord 22.

Reference numeral 21 indicates casters attached to the bottom of the machine base 1.

This device has the above-mentioned configuration, and to explain the use of this device now, a large liquefied nitrogen tank 17 installed in a working position is sent to the inside of the liquefied nitrogen container 2 according to instructions from the upper and lower liquid level sensors 10. The liquefied nitrogen is supplied by opening the solenoid valve 18 via the liquid level warning control device 19, and reaches the mixer 4 after being pressurized by natural pressure or by a heater.

Next, when the switch 14 provided on the grip 13 of the injection body 7 is operated, the solenoid valve 5 provided in the gas hose 12 of the oxygen container 3 is opened by the power cord 22, and oxygen is transferred to the mixer 4.
to be pumped to.

In this mixer 4, the ratio of vaporized nitrogen and oxygen may be adjusted and fixed in advance at a ratio of 8:2, and by operating the switch 14, the solenoid valve 5 is opened and oxygen is force-fed to the mixer 4. ,
Liquefied nitrogen is drawn up, vaporized through heat exchange with room-temperature oxygen, and then injected from the nozzle 15 for use in treating affected areas and alleviating pain.

According to this idea, a miniaturized liquefied nitrogen container and an oxygen container were placed on top of a transportable machine base, and the two were mixed on the machine base, making it possible to significantly reduce the size and weight of the propellant. It has excellent practical effects in that it is very convenient to operate and allows for efficient treatment.

Since the liquefied nitrogen container on the machine base is connected to a large liquefied nitrogen tank installed at another location, the supply is complete and the machine base is lightweight and can be easily moved.

In addition, the ends of the supply tube and suction tube were connected to a mixer inside the liquefied nitrogen container, and the end of the oxygen gas hose was connected to the mixer, so vaporized nitrogen and oxygen were mixed on the machine stand. The ratio can be adjusted easily and reliably, making treatment possible with peace of mind.

Furthermore, by connecting a spray body equipped with a switch through a flexible tube to the mixer, treatment can be easily performed by spraying a fixed amount of mixed gas from the nozzle by operating the switch. It is very convenient because it can be used on the go.

In addition, this device eliminates the huge equipment costs such as ventilation equipment (mass ventilation with 100% fresh air) and exhaust equipment for injected nitrogen gas, compared to conventional methods of preventing oxygen deficiency in treatment rooms. It becomes unnecessary and has a practical effect of being very economical.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; FIG. 1 is a front view of the entire device of this invention, and FIG. 2 is a partially enlarged sectional view. 1 is a machine base, 2 is a liquefied nitrogen container, 4 is a mixer, 5 is a solenoid valve, 6 is a flexible tube, 7 is an injection body, 8 is a supply tube, 9 is a suction tube, 12 is an oxygen gas hose, 14 is 17 is a liquefied nitrogen tank, and 22 is a power cord.

Claims (1)

[Scope of utility model registration request] A liquefied nitrogen container connected to a liquefied nitrogen tank installed at another position and an oxygen container are placed on a movable machine platform, and a supply tube and a suction tube are inserted into the liquefied nitrogen container, The outer end of the suction tube is connected to a mixer, and an oxygen gas hose from an oxygen container is connected to the mixer, and a flexible tube is interposed in the mixer and a switch is provided. A low-temperature gas injection device for local cooling for pain treatment such as rheumatism, which is characterized by being connected to the body.