Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles with an outer tube
Inventors
Kapust, Gregory • Allum, Todd • Wondka, Anthony D. • Cipollone, Joseph • Aguirre, Joey • Eghbal, Darius • Gerber, Anthony • Freitag, Lutz
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-10709864-B2
Publication Date
2020-07-14
Expiration Date
Abstract
A non-invasive ventilation system may include at least one outer tube with a proximal lateral end of the outer tube adapted to extend to a side of a nose. The at least one outer tube may also include a throat section. At least one coupler may be located at a distal section of the outer tube for impinging at least one nostril and positioning the at least one outer tube relative to the at least one nostril. At least one jet nozzle may be positioned within the outer tube at the proximal lateral end and in fluid communication with a pressurized gas supply. At least one opening in the distal section may be adapted to be in fluid communication with the nostril. At least one aperture in the at least one outer tube may be in fluid communication with ambient air. The at least one aperture may be in proximity to the at least one jet nozzle.
Core Innovation
The invention provides a non-invasive ventilation system for respiratory support using a ventilator and a gas delivery circuit. The system includes an outer tube with an open proximal end open to ambient air, at least one jet nozzle disposed upstream of and outside the outer tube, at least one sensor, and at least one nasal cushion at a distal end for impinging a nostril. Ventilation gas supplied to the jet nozzle enters the outer tube through the open proximal end, and entrained ambient air flows into the open proximal end around the periphery of the jet nozzle.
Spontaneous respiration is measured using the at least one sensor, and the ventilator is activated to supply ventilation gas in synchrony with phases of breathing through the gas delivery circuit and to the jet nozzle. The synchrony is configured so that the ventilation gas entrains ambient air at the open proximal end of the outer tube while the patient breathes spontaneously.
In related embodiments, the jet nozzle is flush with and smaller than the open proximal end, and the outer tube includes a jet pump throat with a throat diameter smaller than the diameter of the open proximal end. Additional sensor-driven operation adjusts the supply of ventilation gas based on patient condition information including speaking, apnea, or hypopnea, while maintaining entrainment and synchrony with breathing phases.
Claims Coverage
The independent claims are two in number. Each independent claim centers on non-invasive ventilation with an outer tube open to ambient air, jet-nozzle entrainment, and activation of ventilator delivery in synchrony with phases of breathing based on spontaneous respiration measured by at least one sensor.
Open proximal end outer tube with jet-nozzle entrainment
A non-invasive ventilation system comprising a ventilator, a gas delivery circuit, an outer tube with an open proximal end open to ambient air, at least one jet nozzle disposed upstream of and outside the outer tube, at least one sensor, and at least one nasal cushion at a distal end for impinging a nostril, with ventilation gas entering the outer tube through the open proximal end and entrained ambient air flowing around the periphery of the jet nozzle.
Synchronized ventilation based on measured spontaneous respiration
Measuring spontaneous respiration with the at least one sensor and activating the ventilator to supply ventilation gas in synchrony with phases of breathing through the gas delivery circuit and to the jet nozzle so that the ventilation gas entrains ambient air at the open proximal end of the outer tube.
Flush and smaller jet nozzle relative to the open proximal end
Providing the at least one jet nozzle disposed flush with and smaller than the open proximal end of the outer tube such that ventilation gas enters the outer tube through the open proximal end and entrained ambient air flows around the periphery of the jet nozzle.
Jet pump throat diameter smaller than the open proximal end
The outer tube includes a jet pump throat with a throat diameter smaller than the diameter of the open proximal end.
Sensor-driven adjustment for patient condition information
Adjusting the supply of ventilation gas based on patient condition information including speaking, apnea, or hypopnea, while maintaining entrainment and synchrony with breathing phases.
The claimed coverage is directed to non-invasive respiratory support in which sensor-measured spontaneous respiration controls synchronous ventilator delivery to a jet nozzle, with an outer tube open to ambient air so that ventilation gas entrains ambient air. The remaining inventive features refine nozzle placement and size, the jet pump throat geometry, and sensor-driven adjustment based on patient condition information.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
Interested in licensing this patent?