초록 ▼

A xenon inhalation apparatus for introducing a mixed gas of xenon and oxygen into the lungs of a patient includes a respiration face mask, bellows having exhalation and inhalation ports, storing the mixed gas therein, and capable of varying its volume depending on the volume of the mixed gas stored

A xenon inhalation apparatus for introducing a mixed gas of xenon and oxygen into the lungs of a patient includes a respiration face mask, bellows having exhalation and inhalation ports, storing the mixed gas therein, and capable of varying its volume depending on the volume of the mixed gas stored therein, gas volume managing means, a series of conduit means for connecting the mask and the bellows, carbon dioxide removing means for removing carbon dioxide from exhalation gas in a closed loop system formed by the conduit means, gas flow rate control means, xenon concentration detecting means, xenon-supplying means, oxygen-supplying means, a controller for controlling the xenon-supplying means, oxygen-supplying means, electromagnetic valves and gas volume managing means, and an operation panel capable of at least setting the volume of the mixed gas stored in the bellows and the concentrations of xenon and oxygen to their respective optional values.

대표청구항 ▼

A diagnostic gas inhalation apparatus for introducing a mixed gas of a diagnostic gas and oxygen into the lungs of a patient, which apparatus comprises: a respiration face mask for introducing the mixed gas into the lungs of a patient; a mixed gas circulating system having a variable volume chamber

A diagnostic gas inhalation apparatus for introducing a mixed gas of a diagnostic gas and oxygen into the lungs of a patient, which apparatus comprises: a respiration face mask for introducing the mixed gas into the lungs of a patient; a mixed gas circulating system having a variable volume chamber having an exhalation port and an inhalation port and which is for holding a volume of mixed gas therein, and conduit means including an inhalation and exhalation tube extending in a loop between said exhalation port and said inhalation port, and a respiration tube branched from said inhalation and exhalation tube and extending to said respiration face mask, said inhalation and exhalation tube being free of check valves; gas flow rate control means connected to said conduit means for controlling the flow rate of the mixed gas in the inhalation and exhalation tube, said gas flow rate control means including a blower connected in said inhalation and exhalation tube between said respiration tube and said inhalation port for flowing gas toward said inhalation port, and gas flow sensors connected to said inhalation and exhalation tube at positions immediately upstream and downstream of said respiration tube for sensing gas flow through said inhalation and exhalation tube in response to respiration of the patient and connected to said blower for controlling the speed of said blower for maintaining flow in said inhalation and exhalation tube in response to the sensed flows in a direction from said exhalation port to said inhalation port; diagnostic gas concentration detecting means connected to said respiration face mask for detecting the concentration of diagnostic gas in the gas flowing into said respiration face mask; diagnostic gas supplying means for supplying diagnostic gas into said mixed gas circulating system; and oxygen supplying means for supplying oxygen into said mixed gas circulating system.