SU1450824A1 - Apparatus for determining lung capacity - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to provide the possibility of express examination of the lungs in field and expeditionary conditions while simplifying the design. The device comprises a cup 1 with a mouthpiece 2 and a valve 3 at the atmospheric end, n “communicating with the pressure gauge 4 via a spring-loaded valve 5 and a normally open disc seat - valve 6, with a membrane 7 fitted with a spring 8 with a screw, its force adjustment mechanism 9 , and with an additional sealed container 10 through the seat of a normally closed poppet valve 11. The gas distribution mechanism is a stem 12 with poppet valves 6 and 11, equipped with a spring 13, a latch rod 14 entering the stem recess 12 and fixed on the rigid center 15 of the membrane 7. In the pneumatic system of the container 10 there is installed a spring-loaded valve 16 with a push button 17 and a rod 18 located coaxially with the rod 12 with the possibility of its movement. The valve 3 prevents the measuring system of the device from involuntary inhalation attempts from the system, which eliminates measurement errors. 1 il. W (l my joint venture about 00 y 42b

Description

The invention relates to medical technology and can be used in mass examinations of the respiratory function.

The aim of the invention is to provide the possibility of express examination of the lungs in field and expeditionary conditions while at the same time simplifying the design,

The drawing schematically shows a device for determining lung capacity.

The device contains a cup 1 with a mouthpiece 2 and a valve 3 at the atmospheric end, pneumatically communicated with a pressure gauge 4, calibrated in units of volume, through a spring-loaded 1shapan 5 and a seat of a normally open poppet valve 6, with a membrane 7 fitted with a spring 8 with a screw of mechanism 9 adjusting its force, with an additional hermetic capacity 10 of known volume through the seat of a normally closed disc valve 11. The gas distribution mechanism is a stem 12 with disc valves 6 and -11, equipped with a spring 13, st A latch 14, which is inserted into the recess of the rod 12 and is fixed on the rigid center 15 of the membrane 7. In the pneumatic system of the hermetic container 10, a spring is installed. A flap valve 16 with an external push button 17 and a stem 18 located coaxially with the stem 12 s allows its movement.

The device works as follows.

The patient is connected to the device with the help of a mouthpiece 2 and attempts to expel into the closed cavity of the glass 1. The disc valve 6 of the gas distribution mechanism is open, the system is lower than the original at which the stem 12 moved, and this pressure decrease is recorded by a pressure gauge 4, due to the presence of a spring-loaded valve 5, which at the same time prevents the pressure gauge pneumatic system from applying pressure during repeated attempts after the measurement. The valve 3 prevents the measuring system of the device from attempts to inadvertently inhale from the system, which could lead to gross measurement errors.

The capacity of the lung is determined by a manometer, the scale of which is calibrated in units of volume.

The device is brought to its initial state of readiness for measurement after the patient has been switched off by pressing the push button 17. At the same time, a depressurization of the system occurs in which the atmospheric pressure is established. Simultaneously, the rod 18 moves the rod 12 before the rod latch 14 enters the recess of the rod 12. After releasing the outer push button 17, the spring-loaded valve 16 seals the pneumatic system of the additional tank 10, the actuator is reset.

Claims (1)

Invention Formula A device for determining the capacity of the lungs, containing a measuring container, including a glass with a mouthpiece, a pressure gauge, an additional sealed container with a spring-loaded valve with a stem, a gas distribution mechanism, and connecting pneumatic mains, characterized in that it is possible to quickly examine the patient. Therefore, pressure in glass 1 transfers to field and field conditions to the pneumatic system of gauge 4 and membrane 7. At a certain predetermined pressure, adjusted by means of a screw mechanism 9 and controlled by gauge 4, due to movement of the hard center 15, the rod is latch 14 gets out of engagement with the stem 12, which is moved by the action of the spring 13, opening the passage of gas into the container 10 and closing the passage to the pressure gauge 4. Due to the transfer of a portion of the gas from the patient’s lungs and cup 1 to tank 10, equalized aule view in. 50 55 VIAH while simplifying the design, the gas distribution mechanism is implemented in the form of a spring-loaded rod with small valves and a recess, a locking rod entering the recess of the rod, a membrane with an adjustable spring and a rigid center mechanically connected to the rod-latch and pneumatically connected to the measuring capacity including a valve at the mouthpiece, and by means of a spring-loaded valve with a pressure gauge with a volume scale, and the stem of the spring-loaded valve an additional 0 five VIAH while simplifying the design, the gas distribution mechanism is implemented in the form of a spring-loaded rod with small valves and a recess, a locking rod entering the recess of the rod, a membrane with an adjustable spring and a rigid center mechanically connected to the rod-latch and pneumatically connected to the measuring capacity including a valve at the mouthpiece, and by means of a spring-loaded valve with a pressure gauge with a volume scale, and the stem of the spring-loaded valve an additional 314508244. knop :; 7CT: CH ::; gas distribution with installed coaxially with the rod, the possibility of its movement.