Methods, systems and devices for non-invasive ventilation with gas delivery nozzles in free space
Inventors
Kapust, Gregory • Allum, Todd • Wondka, Anthony D. • Cipollone, Joseph • Gerber, Anthony • Eghbal, Darius • Aguirre, Joey • Kassanis, George A.
Assignees
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Publication Number
US-11896766-B2
Publication Date
2024-02-13
Expiration Date
Abstract
A system for reducing airway obstructions of a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle, and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency. The system may be open to ambient. The control unit may determine more than one gas output velocities. The more than one gas output velocities may be synchronized with different parts of a spontaneous breath effort cycle, and a gas output velocity may be determined by a need for supporting airway patency.
Core Innovation
The invention relates to a ventilation system that includes a ventilator and a nasal interface in fluid communication with the ventilator. The nasal interface comprises an outer tube with an inlet and an outlet and a jet pump throat positioned between the inlet and the outlet, the outer tube being dimensioned to fit at least partially inside a patient's nostril. A nozzle delivers gas from the ventilator into the inlet of the outer tube.
The nasal interface further includes a breath sensing lumen that terminates in a breath sensing port located within the outer tube. The breath sensing lumen is configured to be part of the nasal interface such that breath sensing occurs through a port disposed in the outer tube, and in embodiments the breath sensing lumen is formed integrally with the outer tube or provided as a separate tube coupled to the outer tube.
In further embodiments, the breath sensing port is positioned corresponding to a region of the outer tube that is nearer to the outlet than to the inlet, and more specifically at a location relative to the jet pump throat. The jet pump throat includes geometric relationships between the inlet, throat, and outlet, including diameter relationships and internal diameter geometry.
Claims Coverage
The partial set of relevant claims includes three independent claims. Each independent claim centers on a nasal interface with an outer tube, a jet pump throat, a nozzle that delivers gas into the tube, and a breath sensing lumen terminating in a breath sensing port within the outer tube, with differences primarily in the breath sensing lumen construction and the breath sensing port location.
Ventilation system with nasal interface including jet pump throat and breath sensing port
A ventilation system comprising a ventilator and a nasal interface in fluid communication with the ventilator, where the nasal interface includes an outer tube with an inlet, an outlet, and a jet pump throat between the inlet and the outlet, the outer tube being dimensioned to fit at least partially inside a patient's nostril; a nozzle delivering gas from the ventilator into the inlet of the outer tube; and a breath sensing lumen terminating in a breath sensing port within the outer tube.
Nasal interface with jet pump throat and in-tube breath sensing lumen
A nasal interface for delivering ventilation gas to a patient includes an outer tube having an inlet, an outlet, and a jet pump throat between the inlet and the outlet, the outer tube dimensioned to fit at least partially inside a patient's nostril; a nozzle for delivering gas from a ventilator into the inlet of the outer tube; and a breath sensing lumen terminating in a breath sensing port within the outer tube.
In-tube breath sensing port positioned nearer the outlet than the inlet
A nasal interface for delivering ventilation gas to a patient includes an outer tube having an inlet, an outlet, and a jet pump throat between the inlet and the outlet, the outer tube dimensioned to fit at least partially inside a patient's nostril; a nozzle for delivering gas from a ventilator into the inlet of the outer tube; and a breath sensing lumen formed integrally with the outer tube and terminating in a breath sensing port located at a position corresponding to a region of the outer tube nearer to the outlet than to the inlet.
Across the independent claims, the core coverage is a nasal interface that delivers ventilation gas via an outer tube with a jet pump throat and a ventilator nozzle, while providing a breath sensing lumen that terminates in a breath sensing port within the outer tube. The claim set further differentiates by requiring either the general in-tube breath sensing lumen construction, or an integrally formed breath sensing lumen with a breath sensing port positioned nearer the outlet than the inlet.
Stated Advantages
Supports airway patency.
Increases lung volume/pressure.
Reduces work of breathing (WOB).
Provides comparative performance against prior art oxygen therapy, HFOT, and CPAP/BiPAP using lung pressure/volume and WOB reduction metrics.
Documented Applications
Illustrative treatment algorithms for obstructive sleep apnea including reaction/correction, preemption, and prevention driven by airflow sensor changes.
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