Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles within nasal pillows
Inventors
Wondka, Anthony D. • Allum, Todd • Cipollone, Joseph • Kapust, Gregory • Eghbal, Darius • Aguirre, Joey • Gerber, Anthony
Assignees
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Publication Number
US-10695519-B2
Publication Date
2020-06-30
Expiration Date
Abstract
A non-invasive ventilation system may include a nasal interface. The nasal interface may include a left outer tube with a left distal end adapted to impinge a left nostril, at least one left opening in the left distal end in pneumatic communication with the left nostril, and a left proximal end of the left outer tube in fluid communication with ambient air. The left proximal end of the left outer tube may curve laterally away from a midline of a face. A right outer tube may be similarly provided. One or more left jet nozzles may direct ventilation gas into the left outer tube, and one or more right jet nozzles may direct ventilation gas into the right outer tube. The jet nozzles may be in fluid communication with the pressurized gas supply.
Core Innovation
The invention relates to non-invasive open ventilation systems that provide ventilation gas through a nasal interface while the nose remains open to ambient air for natural inhalation and exhalation. The system includes a pressurized gas supply and a nasal interface having a left outer tube and a right outer tube, each having a distal end adapted to impinge a respective nostril and a proximal end opening in fluid communication with ambient air.
Ventilation gas is delivered into the proximal end openings of the respective outer tubes using one or more left jet nozzles and one or more right jet nozzles. The jet nozzles extend from a distal end of a gas delivery circuit to the proximal opening of the outer tube such that ambient air may flow into the opening around a periphery of the jet nozzles, enabling ambient air entrainment through at least one of the left and right outer tubes.
The outer tubes curve laterally away from a midline of a face, and the system includes embodiments with jet pump, throat, and diffuser geometry, sensing lumens, and ventilator control that uses a speaking mode sensing system to adjust ventilator output while a patient is speaking so ventilation is not asynchronous with spontaneous breathing. The description also includes remote monitoring/telecommunication and ventilator performance trends, as well as optional humidification and drug delivery lumens.
Claims Coverage
The consolidated document includes three independent claim sets. Across them, the core inventive structure is a non-invasive ventilation system with left and right laterally curved outer nasal tubes that impinge respective nostrils, and with pressurized gas injected by jet nozzles at the proximal openings so ambient air flows in around the nozzle peripheries to enable ambient air entrainment.
Laterally curved left and right outer nasal tubes
A non-invasive ventilation system comprising a left outer tube and a right outer tube, each having a distal end adapted to impinge a respective nostril and a proximal end having an opening in fluid communication with ambient air, wherein each outer tube curves laterally away from a midline of a face.
Jet nozzle injection at proximal outer-tube openings
One or more left jet nozzles and one or more right jet nozzles direct ventilation gas into the proximal end openings of the respective outer tubes, with the nozzles extending from distal ends of gas delivery circuits to the proximal openings and being in fluid communication with a pressurized gas supply such that ambient air may flow around the periphery of the nozzles.
Ambient air entrainment through outer tubes
A non-invasive ventilation system wherein ambient air is entrained through at least one of the left and right outer tubes while ventilation gas is directed into the proximal openings using the left and right jet nozzles.
Speaking mode sensing to adjust ventilator output
A ventilator control unit uses a speaking mode sensing system to adjust ventilator output while a patient is speaking so ventilation is not asynchronous with spontaneous breathing.
Overall claim coverage centers on laterally curved left and right outer nasal tubes with proximal openings to ambient air and jet nozzle delivery into those proximal openings to enable ambient-air inflow and entrainment. Additional claimed refinements include sensing-related control during speaking and optional diffuser, sensing lumen, and sound-reduction features.
Stated Advantages
Increased lung volumes.
Reduced work of breathing.
Improved efficiency and mobility.
Ventilation is not asynchronous with spontaneous breathing while the patient is speaking.
Documented Applications
Non-invasive ventilation using non-invasive open ventilation (NIOV) delivering ventilation gas via a nasal interface while ambient air remains available for natural inhalation and exhalation.
Remote monitoring/telecommunication and patient compliance monitoring associated with ventilation system operation and ventilator performance trends.
Sleep apnea treatment (OSA/CSA/MSA) using apnea detection/prediction and therapeutic control algorithms.
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