Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1998-03-12
2000-08-22
Weiss, John G.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820421, A61M 1600, A62B 700, F16K 3102
Patent
active
061055751
ABSTRACT:
A system including methods and apparatus for treatment of a medical disorder such as obstructive sleep apnea or congestive heart failure. The system involves applying separate and independent gains to flow rates of pressurized gas delivered to a patient during inspiratory and expiratory phases of a respiratory cycle to deliver the pressurized gas in proportion to the respective gains during inspiration and expiration. A base pressure may be applied in addition to the gain-modified pressures and an elevated pressure profile may be employed to assist or control inspiration. The system may be fully automated responsive to feedback provided by a flow sensor that determines the estimated patient flow rate. A leak computer can be included to instantaneously calculate gas leakage from the system. The system may be utilized in connection with conventional continuous positive airway pressure (bi-level PAP) equipment to effect various beneficial treatment applications.
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Estes Mark C.
Fiore John H.
Mechlenburg Douglas M.
Respironics Inc.
Weiss John G.
Weiss Joseph F.
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