Portable oxygen concentrator
First Claim
1. A compact and portable oxygen delivery apparatus for medical uses by producing from ambient air a product gas having a high concentration of oxygen and delivering the product gas to a user of the apparatus, the apparatus comprising a chassis, a pressure swing adsorption unit mounted on the chassis and comprising at least one adsorber bed to receive ambient air and adsorb nitrogen from the ambient air to produce the oxygen concentrated product gas, a product delivery unit for receiving at least a substantial portion of the product gas from the pressure swing adsorption unit, and control means for delivering the product gas to the user at selectable rates during inhalation by the user.
6 Assignments
0 Petitions
Accused Products
Abstract
A compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable times and in selectable doses.
43 Citations
18 Claims
- 1. A compact and portable oxygen delivery apparatus for medical uses by producing from ambient air a product gas having a high concentration of oxygen and delivering the product gas to a user of the apparatus, the apparatus comprising a chassis, a pressure swing adsorption unit mounted on the chassis and comprising at least one adsorber bed to receive ambient air and adsorb nitrogen from the ambient air to produce the oxygen concentrated product gas, a product delivery unit for receiving at least a substantial portion of the product gas from the pressure swing adsorption unit, and control means for delivering the product gas to the user at selectable rates during inhalation by the user.
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16. A combined pressure swing adsorption apparatus and product gas conservation device for medical use, having operating components and baffles substantially positioned as illustrated in the drawing and substantially of a size as described in the specification.
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17. An electronic circuit to control a combined pressure swing adsorption apparatus and product gas conservation device, substantially as illustrated in the drawing and substantially as described in the specification.
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18. A warning and alarm system for a combined pressure swing adsorption and conservation apparatus for delivering product gas of a particular concentration range to a user, comprising a power source, means for measuring voltage input from the power source, means for selecting differing flow rates for delivering the product gas to the user, valve means responsive to inhalation by the user for activating the flow of product gas, and means responsive to the voltage, selecting means and the rate of activation of the valve means for signaling a warning and/or an alarm when the concentration of the product gas is outside the range.
Specification