METHOD AND DEVICE FOR ABSORBING HUMIDITY FROM UNIT OF VOLUME OF EXPIRED AIR Russian patent published in 2005 - IPC

FIELD: medicine; medical engineering.

SUBSTANCE: method involves connecting patient to device via bite-board. The patient makes expiration via tube connected to inlet valve of respiratory sack. The expired air is accumulated in the respiratory sack in the amount of equal to the respiratory sack volume. Timer is set for 15 min after being filled. Microcompressor pumps the air expired by the patient via tube filled with silicagel at constant flow rate. The patient goes on filling the respiratory sack with expired air while the microcompressor is operating. After the timer expires, 0.5-1.0 ml of humidity is obtained from the expired air adsorbed on silicagel. Single-use tube containing silicagel is soldered and kept in frost chamber until its biochemical examination is carried out. The device has airtight respiratory sack having inlet and outlet valves. The inlet valve is connected to tube provided with bite-board. The outlet valve is connected to tube containing silicagel layer.

EFFECT: humidity sampling independence of patient state.

2 cl, 1 dwg