# US 2014/0150781 A1 · Automated ventilator with assisted compressions

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- Number: US 2014/0150781 A1
- Document ID: US20140150781A1
- Status: Published application
- Kind: A1
- Application number: 14/058,365
- Filed: 2013-10-21
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Inventors: Christopher A. Di Capua; John F. Di Capua, JR.
- Web page: https://patentgrep.com/patent/US20140150781A1

## CPC

- A61H 31/005: {with feedback for the user}
- A61H 31/00: Artificial respiration by a force applied to the chest; Heart stimulation, e.g. heart massage (applying electric currents by contact electrodes for stimulation, e.g. heart pace-makers, A61N1/36 {; teaching or training models, demonstration models for medical purposes G09B23/288})
- A61H 31/006: {Power driven}
- A61M 16/022: {Control means therefor}
- A61M 16/04: Tracheal tubes (catheters in general A61M25/00)
- A61M 16/0409: {with mean for closing the oesophagus}
- A61M 16/0493: {with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block}
- A61M 16/06: Respiratory or anaesthetic masks
- A61M 16/20: Valves specially adapted to medical respiratory devices
- A61M 16/201: {Controlled valves}
- A61M 16/202: {electrically actuated}
- A61M 16/204: {used for inhalation control}
- A61M 16/205: {used for exhalation control}
- A61M 16/206: {Capsule valves, e.g. mushroom, membrane valves}
- A61M 16/209: {Relief valves}
- A61N 1/39044: {in combination with cardiopulmonary resuscitation [CPR] therapy}
- A62B 7/02: with compressed oxygen or air
- A61H 2201/107: Respiratory gas
- A61H 2201/5007: computer controlled
- A61H 2201/5058: Sensors or detectors
- A61H 2201/5071: Pressure sensors
- A61H 2201/5084: Acceleration sensors
- A61H 2201/5087: Flow rate sensors
- A61M 16/0003: {Accessories therefor, e.g. sensors, vibrators, negative pressure}
- A61M 2016/0027: {pressure meter}
- A61M 2202/0208: Oxygen
- A61M 2205/18: with alarm
- A61M 2205/33: Controlling, regulating or measuring
- A61M 2205/3331: Pressure; Flow
- A61M 2205/3334: Measuring or controlling the flow rate
- A61M 2205/3344: Measuring or controlling pressure at the body treatment site
- A61M 2205/581: by audible feedback
- A61M 2205/583: by visual feedback
- A61M 2205/587: Lighting arrangements
- A61M 2205/80: voice-operated command
- A61M 2205/8206: battery-operated
- A61M 2209/06: Packaging for specific medical equipment
- A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N)
- 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)}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)

## Abstract

A system for performing simultaneous ventilation and resuscitation of a patient includes an oxygen source, at least one inspiration control valve, a breathing apparatus, at least one expiration control valve, at least one indicator, and at least one timer. The breathing apparatus is configured to form an air seal with at least a portion of the patient's respiratory tract such that a gas including oxygen can flow from the oxygen source to the lungs. The at least one expiration control valve being configured to selectively actuate an exhalation valve. The at least one indicator for indicating when a rescuer should perform a chest compression. The at least one timer for synchronizing actuation of the at least one inspiration control valve, the at least one expiration control valve, and the indicator, thereby enabling continuous compressions to be provided to the patient while the patient undergoes inspiration and expiration.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A method of facilitating resuscitation of a patient by a lightweight, compact, and portable apparatus, the method comprising the steps of:
providing a laryngeal mask airway device to form an air seal with at least a portion of the patient's respiratory tract so that a gas including oxygen flows from an oxygen source to lungs of the patient through the laryngeal mask airway device;
disposing an inspiration control valve between the oxygen source and the patient;
selectively actuating a one-way exhalation valve by an expiration control valve;
allowing the gas including oxygen to flow from the oxygen source to the laryngeal mask airway device in a first state;
in a second state opposite the first state, allowing gas expelled from the patient to flow from the laryngeal mask airway device to the atmosphere while preventing the gas including oxygen from flowing from the oxygen source;
indicating, by an indicator device, when chest compressions on the patient should be performed; and
synchronizing actuation of the inspiration control valve, the expiration control valve, and the indicator so that continuous chest compressions are applied to the patient synchronized with the indications from the indicator device while the patient undergoes both inspiration and expiration, so that, during a downward compression phase of a chest compression, the patient receives positive-pressure ventilation during the first state, and expelled gas is exhausted to the atmosphere during the second state.

### Claim 22 (depends on 21)

The method of claim 21, further comprising the step of relieving gas between the inspiration control valve and the laryngeal mask airway device when a second pressure thereat exceeds a predetermined threshold.

### Claim 23 (depends on 21)

The method of claim 21, further comprising the step of continuously indicating by the indicator device when the each of the chest compressions should be performed throughout the resuscitation of the patient.

### Claim 24 (depends on 23)

The method of claim 23, wherein the continuously indicating is carried out at a rate of at least 100 indications per minute.

### Claim 25 (depends on 21)

The method of claim 21, wherein the synchronizing actuation includes actuating the inspiration control valve and the expiration control valve together at a rate less than 15 times per minute.

### Claim 26 (depends on 21)

The method of claim 21, wherein the steps are carried out using an apparatus that is lightweight, compact, and portable.

### Claim 27 (depends on 26)

The method of claim 26, wherein the oxygen source is an oxygen tank that is lightweight, compact, and portable, such that the apparatus together with the oxygen tank form a system that is lightweight, compact, and portable.

### Claim 28 (depends on 21)

The method of claim 21, wherein the indicator includes an audible device or a visual device or both.

### Claim 29 (depends on 28)

The method of claim 28, wherein if the indicator includes the audible device, the audible device produces an audible sound at a rate of at least 100 indications per minute, and if the indicator includes the visual device, the visual device produces a visible signal at the rate of at least 100 indications per minute.

### Claim 30 (depends on 21)

The method of claim 21, wherein the inspiration control valve remains in the first state for a period corresponding to about for one chest compression before changing to the second state.

### Claim 31 (depends on 21)

The method of claim 21, further comprising providing an Automatic External Defibrillator with the apparatus.

### Claim 32 (depends on 21)

The method of claim 21, wherein the inspiration control valve includes a second inspiration control valve such that the two inspiration control valves result in a peak inspiratory pressure that does not exceed 26 cm H2O relative to atmospheric pressure.

### Claim 33 (depends on 21)

The method of claim 21, wherein the laryngeal mask airway device is a supraglottic airway device.

### Claim 34 (depends on 21)

The method of claim 21, wherein the inspiration control valve is actuated every seven times the indicator is actuated.

### Claim 35 (depends on 21)

The method of claim 21, wherein the first state is ON, and the second state is OFF.

### Claim 36 (depends on 21)

The method of claim 21, wherein the first state is an inspiration state and the second state is an expiration state.

### Claim 37 (depends on 22)

The method of claim 22, wherein the predetermined threshold does not exceed 26 cm H2O relative to atmospheric pressure.

### Claim 38 (depends on 21)

The method of claim 21, wherein the gas including oxygen from the oxygen source is substantially pure oxygen.

### Claim 39

A method of assisting in resuscitating a patient, comprising the steps of:
inserting, through a mouth and into at least part of a respiratory tract of a patient to be resuscitated, a laryngeal mask airway device so that a substantially airtight seal is formed in the patient's supraglottic area to allow a gas including oxygen to flow from an oxygen source to lungs of the patient; and
applying continuous chest compressions at a rate as indicated by an indicator device simultaneously as the patient automatically receives positive-pressure ventilation during an inspiration state and as the patient automatically undergoes expiration during an expiration state.

### Claim 40 (depends on 39)

The method of claim 39, wherein the rate is at least 100 indications per minute, and wherein the inspiration state occurs a rate less than 15 times per minute.

### Claim 41 (depends on 39)

The method of claim 39, wherein the laryngeal mask airway device is a supraglottic airway device.