Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1988-04-01
1990-06-12
Burr, Edgar S.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820314, 12820423, 12820426, 12820518, 12820524, A61M 1500
Patent
active
049324012
ABSTRACT:
A displacement metering device for administering a mixture of oxygen and an anesthetic gas to a patient measures single dose quantities of each of the two gases in separate sets of gas displacing means and dispenses a dose of each gas in admixture to a patient during the inspiration phase of the patient's respiratory cycle. Coordinating means ensure that the two gases are delivered in constant ratio and also provide means for changing the ratio between the two gases. Means are also provided to change the volume, or dose size, of the two administered gases.
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Burr Edgar S.
Lewis Aaron J.
Shubert Roland H.
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