Surgery – Respiratory method or device
Patent
1999-05-07
2000-10-17
Weiss, John G.
Surgery
Respiratory method or device
12820212, 12820423, 12820525, 12820526, 600520, A61M 1500
Patent
active
061315699
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a method for preparation of respiratory air of an oxygen air mixture with the addition of substantially pure oxygen gas into air to be inhaled by organisms, in particular human beings, and having a device for physical exercise during inhalation. This type of respiratory air preparation using substantially pure or purely ionized oxygen is primarily used, with great success, for elderly people having low nominal arterial oxygen partial pressure (pO.sub.2) to permanently increase this nominal pO.sub.2 (the principle of Ardennen-O.sub.2, multi-step therapy).
In the conventional method, an oxygen-air mixture is administered to the individual to be supplied with the oxygen-air mixture using a device providing oxygen. The oxygen volume fraction of the oxygen-air mixture to be prepared is set, as a constant time-independent value, at the device providing the oxygen. In particular, oxygen pressure vessels, central oxygen supply installations, devices for the extraction of oxygen through the decomposition of oxygen-rich chemicals, oxygen separation systems having membranes or the like are thereby utilized as the oxygen delivering device. The air mixture having increased oxygen content is applied using breathing masks, nose probes, open applicators or the like.
These conventional methods for preparing respiratory air of an oxygen-air mixture have the following disadvantages. Since the oxygen volume fraction of the oxygen-air mixture to be prepared is set as a fixed quantity at the device delivering the oxygen, the constant oxygen intake is independent of changeable quantities influencing the individual being supplied with the oxygen-air mixture. These quantities are e.g. a changing physical power output of the person being supplied with oxygen. In addition, difficult and time consuming investigations must be initiated to determine the percentage of oxygen volume fraction in the oxygen-air mixture to be prepared in dependence on the physiologically constant quantities of the person being supplied with the oxygen-air mixture, e.g. age, gender, size, weight, physical condition and the like. Adjustment to the instantaneous power being expended by the person supplied with the oxygen-air mixture and of the oxygen fraction of the oxygen-air mixture does not occur or, if at all, in a very poor fashion through manual adjustment.
SUMMARY OF THE INVENTION
The method in accordance with the invention, wherein the enrichment is controlled in dependence on the current physical personal data measured (age, power output) of the person being supplied has, in contrast thereto, the advantage that the oxygen volume fraction of the prepared oxygen-air mixture to be administered is controlled in dependence on the instantaneous measured physical power output of the organism to be supplied with the oxygen-air mixture in such a fashion that when the physical power increases, the oxygen volume fraction of the oxygen-air mixture increases and when the physical power decreases the oxygen volume fraction of the oxygen-air mixture decreases. The oxygen volume fraction can thereby be adjusted to the physical power increase of the person being supplied as a result of which, a larger amount of oxygen can be taken up to thereby increase the arterial pO.sub.2. Towards this end, the oxygen volume fraction can lie between 20% and 75% of the total input oxygen-air mixture, wherein the organism being supplied with the oxygen-air mixture expends the physical power to be measured in cooperation with a home exerciser or the like with adjustment to the individual power level (a bicycle ergometer, a rowing machine, a rotating jogging belt or the like). An important advantage is that the oxygen intake of the blood depends on the actual power output of the organism. It has turned out that a long term increase in the partial oxygen pressure in the blood can only be achieved by means of oxygen intake during power output and is substantially dependent thereon.
In accordance with an advantageous configuration of
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Srivastava V.
Weiss John G.
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