ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,333, issued on July 29, was assigned to Ventec Life Systems Inc. (Bothell, Wash.).

"Portable medical ventilator system using portable oxygen concentrators" was invented by Samir Saleh Ahmad (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A portable medical ventilator using pulse flow from an oxygen concentrator to gain higher oxygen concentration includes a positive pressure source to deliver pressurized air to the patient and a negative pressure source to trigger the oxygen concentrator. A patient circuit attached to a patient interface mask connects the ventilator to the patient. The ventilator includes a controller module that is config...