Breathing apparatus for hypoxic pre-acclimatization and training
First Claim
1. An apparatus for breathing an air mixture expired by a user, providing an air mixture which has lower oxygen concentration than the ambient air, said apparatus comprising:
- an expiratory path, said expiratory path communicating with a reservoir, said reservoir being of adjustably variable volume;
an inspiratory path communicating with said reservoir through a CO2 absorption chamber; and
a directional valve, said directional valve allowing single direction flow of air through both said expiratory path and said inspiratory path; and
means of communication of said expiratory path and said inspiratory path in sealed engagement with the respiratory system of a user.
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Abstract
A hand-held rebreather/breathing apparatus for high altitude pre-acclimatization and training. Air exhaled by a user is directed to a reservoir bag for cooling and condensate collection. At inhalation negative pressure created a mixing chamber forces the air stored in the reservoir bag to pass via CO2 absorption chamber where it may be mixed with a fresh portion of the ambient air that influxes via orifice(s) communicating with this chamber. Baseline of the minimum oxygen concentration in inspired air can be pre-set by means of adjustment of the maximum volume of the reservoir bag and/or by means of altering of the number or diameter of one or a plurality of orifices for commination of the ambient air. Biofeedback may be provided by an oxygen monitor.
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Citations
22 Claims
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1. An apparatus for breathing an air mixture expired by a user, providing an air mixture which has lower oxygen concentration than the ambient air, said apparatus comprising:
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an expiratory path, said expiratory path communicating with a reservoir, said reservoir being of adjustably variable volume;
an inspiratory path communicating with said reservoir through a CO2 absorption chamber; and
a directional valve, said directional valve allowing single direction flow of air through both said expiratory path and said inspiratory path; and
means of communication of said expiratory path and said inspiratory path in sealed engagement with the respiratory system of a user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification