# US 11,896,766 B2 · Methods, systems and devices for non-invasive ventilation with gas delivery nozzles in free space

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- Number: US 11,896,766 B2
- Document ID: US11896766B2
- Status: Granted
- Kind: B2
- Application number: 17/386,292
- Filed: 2021-07-27
- Published: 2022-01-13
- Granted: 2024-02-13
- Earliest claimed: 2009-04-02
- Assignees: Breathe Technologies, Inc.
- Applicants: Breathe Technologies, Inc.
- Inventors: Gregory Kapust; Todd Allum; Anthony D. Wondka; Joseph Cipollone; Anthony Gerber; Darius Eghbal; Joey Aguirre; George A. Kassanis
- Web page: https://patentgrep.com/patent/US11896766B2

## CPC

- A61M 16/0666: {Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02)}
- A61M 16/0003: {Accessories therefor, e.g. sensors, vibrators, negative pressure}
- A61M 16/0006: {with means for creating vibrations in patients' airways}
- A61M 16/0057: {Pumps therefor}
- A61M 16/0066: {Blowers or centrifugal pumps}
- A61M 16/0069: {the speed thereof being controlled by respiratory parameters, e.g. by inhalation}
- A61M 16/0096: {High frequency jet ventilation}
- A61M 16/0493: {with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block}
- A61M 16/0605: {Means for improving the adaptation of the mask to the patient}
- A61M 16/0622: {having an underlying cushion}
- A61M 16/0677: {Gas-saving devices therefor}
- A61M 16/0683: {Holding devices therefor}
- A61M 16/0688: {by means of an adhesive}
- A61M 16/0841: {for sampling}
- A61M 16/0858: {Pressure sampling ports}
- A61M 16/0875: {Connecting tubes}
- A61M 16/0883: {Circuit type}
- A61M 16/101: {using an oxygen concentrator}
- A61M 16/127: {by Venturi effect, i.e. entrainment mixers}
- A61M 16/0825: {with ball-sockets}
- A61M 16/107: {in the inspiratory path}
- A61M 16/16: Devices to humidify the respiration air {(A61M16/1045 takes precedence)}
- A61M 16/201: {Controlled valves}
- A61M 16/208: {Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves}
- A61M 2016/0015: {inhalation detectors}
- A61M 2016/0021: {with a proportional output signal, e.g. from a thermistor}
- A61M 2016/0024: {with an on-off output signal, e.g. from a switch}
- A61M 2016/0027: {pressure meter}
- A61M 2016/0036: {in the breathing tube and used in both inspiratory and expiratory phase}
- A61M 2016/0661: {with customised shape}
- A61M 2202/0208: Oxygen
- A61M 2202/03: Gases in liquid phase, e.g. cryogenic liquids
- A61M 2205/0205: Materials having antiseptic or antimicrobial properties, e.g. silver compounds, rubber with sterilising agent
- A61M 2205/17: with redundant control systems
- A61M 2205/3334: Measuring or controlling the flow rate
- A61M 2205/8206: battery-operated
- A61M 2230/40: Respiratory characteristics
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## 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.

## Claims

### Claim 1

A ventilation system comprising:
a ventilator; and
a nasal interface in fluid communication with the ventilator, the nasal interface comprising:
an outer tube having 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 for 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.

### Claim 2 (depends on 1)

The ventilation system of claim 1, wherein the breath sensing lumen is formed integrally with the outer tube.

### Claim 3 (depends on 1)

The ventilation system of claim 1, wherein the breath sensing lumen comprises a separate tube coupled to the outer tube.

### Claim 4 (depends on 1)

The ventilation system of claim 1, wherein the breath sensing port is located within the outer tube at a position corresponding to a region of the outer tube nearer to the outlet than to the inlet.

### Claim 5 (depends on 1)

The ventilation system of claim 1, wherein the breath sensing port is located within the outer tube at a position corresponding to a region of the outer tube between a beginning of the jet pump throat and the outlet.

### Claim 6 (depends on 1)

The ventilation system of claim 1, wherein the breath sensing port is located within the outer tube at a position corresponding to a region of the outer tube nearer to the outlet than to a beginning of the jet pump throat.

### Claim 7 (depends on 1)

The ventilation system of claim 1, wherein the inlet defines an inlet diameter and the jet pump throat defines a throat diameter less than the inlet diameter.

### Claim 8 (depends on 1)

The ventilation system of claim 1, wherein the outer tube has a constantly tapering internal diameter from the inlet to the jet pump throat.

### Claim 9 (depends on 1)

The ventilation system of claim 1, wherein the outlet defines an outlet diameter greater than a throat diameter.

### Claim 10 (depends on 1)

The ventilation system of claim 1, wherein the outer tube includes a jet pump diffuser between the jet pump throat and the outlet.

### Claim 11 (depends on 10)

The ventilation system of claim 10, wherein the breath sensing port is located within the outer tube at a position corresponding to the jet pump diffuser.

### Claim 12 (depends on 1)

The ventilation system of claim 1, wherein the ventilator is configured to measure a pressure signal using the breath sensing lumen.

### Claim 13 (depends on 1)

The ventilation system of claim 1, wherein the ventilator is configured to measure a flow signal using the breath sensing lumen.

### Claim 14

A nasal interface for delivering ventilation gas to a patient, the nasal interface comprising:
an outer tube having 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 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.

### Claim 15 (depends on 14)

The nasal interface of claim 14, wherein the breath sensing lumen is formed integrally with the outer tube.

### Claim 16 (depends on 14)

The nasal interface of claim 14, wherein the breath sensing lumen comprises a separate tube coupled to the outer tube.

### Claim 17

A nasal interface for delivering ventilation gas to a patient, the nasal interface comprising:
an outer tube having 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 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.

### Claim 18 (depends on 17)

The nasal interface of claim 17, wherein the breath sensing port is located at a position corresponding to a region of the outer tube between a beginning of the jet pump throat and the outlet.

### Claim 19 (depends on 18)

The nasal interface of claim 18, wherein the breath sensing port is located at a position corresponding to a region of the outer tube nearer to the outlet than to the beginning of the jet pump throat.

### Claim 20 (depends on 17)

The nasal interface of claim 17, wherein the outer tube includes a jet pump diffuser between the jet pump throat and the outlet, and the breath sensing port is located at a position corresponding to the jet pump diffuser.