JPH0242282Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an oxygen inhalation saving adjustment device for constantly inhaling fresh oxygen to patients with spontaneous breathing and reduced lung function. The present invention relates to an oxygen inhalation saving adjustment device which is intended to reduce the gas consumption of oxygen cylinders used at home or in portable use so that they can be used for a long period of time.

(Prior technology) Conventional oxygen inhalation devices other than devices such as this type of respirator employ a method in which a constant amount of oxygen gas reaches the patient's mouth and nose from the source and is constantly breathed. has been done. However, in this method, oxygen constantly flows out during the exhalation phase or even during exhalation, so that it does not enter the patient's lungs and is wasted. Conventionally, therefore, a large rubber breathing bag is placed at the exit from the flowmeter to collect exhaled air, which is then inhaled during inspiration. In this case, if the oxygen flow rate is not equal to or greater than the patient's one-time expiratory volume, the patient's exhaled air will preferentially flow back into the respiratory sac, forcing the patient to rebreathe exhaled air, which poses a problem in terms of treatment effectiveness. It was hot.

(Problems that the invention attempts to solve) Therefore, this invention was devised to solve the above-mentioned problems.

In general, the amount of oxygen gas a patient breathes at one time is 0.2 even for those with low lung function, and if the exhalation time is about 1 second, expiratory rebreathing cannot be prevented unless a constant flow of 12/min is provided. If the actual respiratory rate of a patient with a tidal volume of 0.2 is 15 breaths/minute, then this is 3 breaths per minute, and 12-3=9 wasteful amounts of oxygen are released.

However, in this case, the patient will have to inhale 100% oxygen gas, and 100% inhalation is not necessary except for emergencies such as acute oxygen deficiency, and it is not necessary to inhale 100% concentrated oxygen for a long period of time. There is even a risk of oxygen poisoning.

In addition, patients with chronic respiratory failure may spend up to 12 hours a day
Continuous inhalation for 24 hours reduces the concentration of oxygen entering the lungs.
In many cases, it is desired to control the oxygen concentration to 30% to 40%, and the normal method is to dilute concentrated oxygen with air at the inhalation mask and inhale it. Even if the prescription varies from person to person
It ranges from 0.5/min to 2/min, but the most common patient is 1/min.

That is, it is around 0.02 per second. In the case of such a therapy in which a small amount of oxygen is inhaled, it is not appropriate to use the conventionally used rubber breathing bag mentioned above.

Furthermore, in recent years, health insurance has come to cover home oxygen therapy and visits to the hospital for outpatient treatment twice a month, and oxygen gas is essential for both trips, but large-capacity cylinders are not enough. Since it is too heavy to carry, the limit is a lightweight 2,000 ml, which can be filled to 100 atmospheres and can only be inhaled for about 3 hours, so something that can be inhaled for a long time is desired.

This invention is proposed in order to meet each of the above-mentioned demands.

(Means for solving the problems) In order to solve all the problems mentioned above, this invention has an oxygen inhalation adjustment container installed between the oxygen gas and various masks located in the mouth, nose, etc. It consists of a lid and a transparent case, from which a small-capacity elastic bag is suspended below, and an inflow hole and an outflow hole are formed above.

Further, a valve cylinder provided with a check valve communicating with the outflow hole is inserted into the inside of the lid body. A branch pipe that communicates with the elastic bag is formed in a part of the lid body, and by storing oxygen gas coming out from the gas source during exhalation in a small elastic bag, the accumulated amount is transferred during inspiration into a constant flow of oxygen. The above purpose is achieved by inhaling together with the elastic bag to avoid waste, and by using a check valve to effectively prevent the patient's exhaled air from flowing back into the elastic bag.

(Example) Next, an example of this invention will be described with reference to the drawings. The adjustment container 1 is screwed and fitted with a circular lid body 2 and a cylindrical case 3 having a hole communicating with the outside air. The outer periphery of the lid body 2 has an inflow hole 4 that enters the interior from one side and an outflow hole 5 that discharges the liquid to the other side.
and are formed respectively. Inside the outflow hole 5 of the lid body 2, a valve cylinder 6 is fitted with a check valve 7 made of rubber or the like so as to be openable and closable. This valve cylinder 6
A passage hole 15 communicating with the outflow hole 5 is bored in the drain hole 5, and a side cover 16 is screwed and fixed.

Furthermore, a passage 8 is formed in the lid body 2 from the inflow hole 4 to the outflow hole 5 in front of the check valve 7, and a downwardly directed flange piece 9 is formed to protrude from a position communicating with the passage 8. Suspended from the collar piece 9 is an elastic bag 10 made of rubber or the like that can expand and store oxygen flowing into the patient's exhalation in balance with the back pressure of the exhalation. 10 shows the elastic bag 10 in an inflated state. The case 3 has holes 11, 11, . . . for communication with outside air formed at the lower end thereof.

Further, a transparent soft hose 12 and a soft hose 13 are connected to the inflow hole 4 and the outflow hole 5, respectively. A mask or nostril insert 17 or the like is connected to the tip of a predetermined length of the soft hose 13 to be placed in the patient's mouth, nose, etc. Next, the tip of the soft hose 12 is connected to a humidifier 24, and the humidifier 24 is connected to an oxygen container 1.
9, a pressure flow regulator 20, and a flow meter 22 via a pressure gauge 21 are connected to each other. Reference numeral 25 indicates a float located inside the flow meter 23.

(Function) This device has the above-mentioned configuration, and to explain how to use it now, the pressure is adjusted to a predetermined pressure from the oxygen container 19 by the pressure flow regulator 20, and the flow meter 2
3, and the soft hose 12 passes through the humidifier 24.
The supplied oxygen presses the internal check valve 7 through the inflow hole 4, passes through the outflow hole 5 through a soft hose, and is inhaled into the patient through a mask or nostril insert 17 or the like. When the patient exhales, a portion of the oxygen being delivered from the inflow port 4 is temporarily collected in the small diameter elastic bag 10. If this accumulated oxygen is inhaled together with a constant flow of oxygen during the next intake, it is possible to temporarily inhale concentrated oxygen and it is not wasted.

Furthermore, a check valve 7 of the valve cylinder 6 provided on the outflow hole 5 side
Even if the patient's exhalation is reversed, the check valve 7 is closed and the exhalation does not accumulate in the elastic bag 10, so the patient does not have to worry about rebreathing the exhalation.

In addition, since the check valve 7 is closed during exhalation, oxygen does not pass through and is not wasted, resulting in great savings.

(Effects of the invention) As described above, according to the adjustment container of this invention, the oxygen delivered during exhalation is not wasted, and therefore,
Even a small-diameter oxygen container can be used for a long time, making it extremely convenient for portable and home use.

In addition, since the exhaled air does not flow backwards, there is no need to worry about rebreathing the exhaled air, and it is very effective when inhaled by patients undergoing treatment in which a small amount of oxygen is inhaled. The elastic bag suspended below the lid is located inside the transparent case, so when it expands due to the inflow of oxygen during exhalation, it can be easily seen from the outside and the bag can be easily seen from the outside. The progress can be seen at a glance, making it extremely convenient and safe to use. Furthermore, this elastic bag can send out accumulated oxygen even with a slight negative pressure when inhaling, and since it is housed in a case, it is not easily deformed from the outside during use and has the effect of operating safely. Furthermore, by installing a valve cylinder with a check valve in a position that communicates with the outflow hole, oxygen is ensured to pass through during inspiration, and the check valve closes during exhalation to prevent oxygen from passing through. It has the excellent effect of being temporarily cut off and significantly reducing waste.

As described above, this invention has the practical effect of reducing the oxygen flow rate by approximately 50% compared to conventional breathing apparatus.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view with a part cut out of the regulating container of this invention, Fig. 2 is an enlarged sectional view with a part cut out, Fig. 3 is a slope view of the valve barrel, and Fig. 4 shows the state in use. FIG. 5 is a side view of the entire device showing a part thereof, and FIG. 5 is a plan view showing a part of the main part. Code 1 is the adjustment container, 2 is the lid, 3 is the case, 4
is an inflow hole, 5 is an outflow hole, 6 is a valve cylinder, 7 is a check valve,
8 is a passage, 10 is an elastic bag, 12 and 13 are soft hoses, 17 is a mask or nasal insert, and 19 is an oxygen container.

Claims (1)

[Scope of utility model registration request] In an oxygen inhalation saving adjustment device installed between oxygen gas and a mask, etc. that inhales into the human body, the adjustment container consists of a lid and a transparent case, and an elastic bag is suspended from the bottom of the lid. At the same time, an inflow hole and an outflow hole are formed in the upper part, and a valve cylinder provided with a reverse valve that communicates with the outflow hole is inserted into the inside of the lid body, and a part of the lid body is provided with an inverted valve that communicates with the outflow hole. An oxygen inhalation saving adjustment device characterized by forming a branch pipe communicating with an elastic bag.