Respiratory exerciser and rebreathing device
First Claim
1. A respiration exerciser and rebreathing device comprising walls forming first and second chambers, connection means therebetween for the passage of air, a mouthpiece for breathing into and out of said device, valve means including first and second passages connected to said first and second chambers, respectively, for regulating air flow between said mouthpiece and said first and second chambers so as to permit the passage of exhaled air from said mouthpiece into said first chamber and to supply inhaled air from said second chamber to said mouthpiece, and air flow means for connecting said first chamber to ambient air and for mixing outside air with exhaled air flowing through said first chamber and through said connection means thereby varying the carbon dioxide level in the air entering said second chamber.
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Accused Products
Abstract
A respiratory exerciser and rebreathing device in which inhalation and exhalation chambers are provided for mixing exhaled air with ambient air to increase the carbon dioxide content of the air to be inhaled. A mouthpiece and a valve device between the mouthpiece and the chambers for directing the air flow are provided, and an adjustable mechanism is used to vary the amount of exhaled air which is mixed with ambient air to be rebreathed. Condensation plates in the inhalation chamber remove moisture from the air which is inhaled. The breathing pressures required to operate the device may be variable, in order to control the exercise of the muscles of respiration.
118 Citations
16 Claims
- 1. A respiration exerciser and rebreathing device comprising walls forming first and second chambers, connection means therebetween for the passage of air, a mouthpiece for breathing into and out of said device, valve means including first and second passages connected to said first and second chambers, respectively, for regulating air flow between said mouthpiece and said first and second chambers so as to permit the passage of exhaled air from said mouthpiece into said first chamber and to supply inhaled air from said second chamber to said mouthpiece, and air flow means for connecting said first chamber to ambient air and for mixing outside air with exhaled air flowing through said first chamber and through said connection means thereby varying the carbon dioxide level in the air entering said second chamber.
Specification