초록 ▼

A method and apparatus for intermittent administration of supplemental oxygen to chronic obstructive pulmonary disease patients programmed for specific oxygen needs for each patient. Patient\s arterial blood oxygen level is measured while supplying oxygen to determine the time required to reach a de

A method and apparatus for intermittent administration of supplemental oxygen to chronic obstructive pulmonary disease patients programmed for specific oxygen needs for each patient. Patient\s arterial blood oxygen level is measured while supplying oxygen to determine the time required to reach a desired level and it is again measured without supplemental oxygen to determine the time required to diminish to a second, lower particular level. These two time intervals are applied as a program to apparatus connected to a supply of oxygen having valve and time controls to provide a regulated flow of supplemental oxygen to a nasal cannula for a preset time and to shut off the flow for a preset time sequentially and repetitively. The apparatus is powered by the energy of the gas itself either directly by gas powered controls and valves or indirectly with electrically powered controls and valves with gas power operating an electric generator to supply the necessary electrical power.

대표청구항 ▼

Apparatus for conserving oxygen by providing, sequentially and repetitively, an ON time period and OFF time period of measured flow of supplemental oxygen gas from an oxygen supply conduit and through a delivery conduit adapted for delivering said gas to a spontaneously breathing patient without sub

Apparatus for conserving oxygen by providing, sequentially and repetitively, an ON time period and OFF time period of measured flow of supplemental oxygen gas from an oxygen supply conduit and through a delivery conduit adapted for delivering said gas to a spontaneously breathing patient without substantially obstructing said patient\s normal ambient air intake for improved function in certain disorders, as exemplified by chronic obstructive pulmonary disease, according to a program based upon such patient\s characteristics relative to saturation time and desaturation time in said patient\s use of such oxygen, comprising in combination: automatically operated on/off valve means connected in said supply conduit to permit the flow of oxygen therethrough for a first, or ON time period and to provide said supplemental oxygen to said patient substantially at atmospheric pressure and without substantially obstructing ambient air intake and to prevent said flow for a second, or OFF time period to conserve said oxygen gas; time control means operatively connected to said valve means to actuate said valve means in accordance with said program, including independently adjustable ON time interval adjustment means and OFF time interval adjustment means, wherein each said time interval is independent of said patient\s respiratory cycle, extends over a plurality of respiratory cycles, and is preset; time clock means operatively connected to said time control means to provide time period information to said time control means; and means to operate said valve means and said time control means with energy derived from the expanding and flowing oxygen gas.