초록 ▼

A device for administering oxygen or other respirating gases to a patient premeters and temporarily stores single dose quantities of respirating gas and dispenses each dose in synchronization with the patient\s inspiratory cycle. A sensor produces a signal upon the onset of each inhalation and those

A device for administering oxygen or other respirating gases to a patient premeters and temporarily stores single dose quantities of respirating gas and dispenses each dose in synchronization with the patient\s inspiratory cycle. A sensor produces a signal upon the onset of each inhalation and those signals cause single doses of gas to be dispensed to the patient in unison with the patient\s respiration cycle.

대표청구항 ▼

A device for supplying premeasured doses of respirating gas to a patient in synchronization with the respiratory cycle of the patient comprising: a source of respirating gas at relatively high pressure; containment means having a volume sized to measure a prescribed single dose quantity of said resp

A device for supplying premeasured doses of respirating gas to a patient in synchronization with the respiratory cycle of the patient comprising: a source of respirating gas at relatively high pressure; containment means having a volume sized to measure a prescribed single dose quantity of said respirating gas at source pressure and to temporarily store said measured dose; means for sensing the onset of inhalations of the patient and for producing signals in response to said sensing; valve means arranged to move between a first position and a second position in response to said produced signals, said valve means comprising a three-way valve having two option ports and a common port; cannula means; first gas flow routing means for connecting said gas source to one of said option ports; second gas flow routing means for connecting said containment means to said common port; third gas flow routing means for connecting one end of said cannula means to the other of said option ports; and means connected to the other end of said cannula means and adapted for communication with the nasal cavity of the patient, said valve means in its first position connecting said first gas flow routing means to said second gas flow routing means and placing said gas source in communication with said containment means thereby filling said containment means with respirating gas at source pressure, said valve means in its second position connecting said second gas flow routing means to said third gas flow routing means and placing said containment means in communication with said means connected to the other end of the cannula means thereby releasing said measured dose quantity of respirating gas from said containment means and conveying said gas dose to the patient.