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US 2008/0156328 A1Published application
Solenoid air/oxygen system for use with an adaptive oxygen controller and therapeutic methods of use
OwnerJohn TAUBEinventor
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OwnerJohn TAUBEinventor
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A pair of solenoid air/oxygen mixing systems used by an adaptive controller for delivering fractional inspired oxygen to a patient is described. The solenoid control system comprises either a bi-modal solenoid or a proportional solenoid air/oxygen mixing system to derive a fraction of inspired oxygen delivered to a patient. In the bi modal solenoid air/oxygen mixing system, a derived fraction of insipid oxygen is delivered to a patient. The bi-modal mixer uses a three-way valve solenoid. The solenoid has two input gas ports and one output gas port. Toggling between the two input port gases generates an output gas oxygen concentration. In contrast with the bi-modal solenoid, variation or proportionality between the two input port gases generates an output gas oxygen concentration. Both solenoid systems use a mini-computer and digital controller with software to control the fraction of inspired oxygen delivered to a patient. Finally, several therapeutic applications are described.
A solenoid mixing system that uses two input gases of 21% and 100% oxygen to produce an output gas that varies between 21% and 100% oxygen concentration.
A solenoid mixing system comprising a solenoid and an adaptive controller, wherein said adaptive controller is further employed for delivering fractional inspired oxygen to a patient, said adaptive controller comprising a pulse oximeter adapted to be connected by an optical sensor to said patient for measuring said patient's blood hemoglobin saturation and pulse rate, said pulse oximeter generating signals representative of said blood hemoglobin saturation and said pulse rate, calculation means responsive to said signals from said pulse oximeter for determining the fractional inspired oxygen level to be delivered to the patient, a source of oxygen, a source of air and means connected to said source for mixing oxygen and air, said means for mixing being controlled by said calculation means and having an output adapted to be connected to the patient, said calculation means controlling the oxygen concentration that said means for mixing feeds to the patient to cause the blood in the patient to reach a predetermined hemoglobin saturation level which adapts to the patient's requirements.
A method of using a solenoid mixing system with an adaptive oxygen controller, comprising using a pulse oximeter as a feedback signal for a patient in need of supplemental oxygen therapy.
Dependencies are inferred from the claim text.