# US 11,433,206 B2 · Respiratory treatment isolation hood

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- Number: US 11,433,206 B2
- Document ID: US11433206B2
- Status: Granted
- Kind: B2
- Application number: 17/340,656
- Filed: 2021-06-07
- Published: 2022-01-06
- Granted: 2022-09-06
- Earliest claimed: 2020-07-05
- Applicants: Darren Peter Mareiniss
- Inventors: Darren Peter Mareiniss
- Web page: https://patentgrep.com/patent/US11433206B2

## CPC

- A61M 16/0627: {with sealing means on a part of the body other than the face, e.g. helmets, hoods or domes}
- A61G 10/005: {Isolators, i.e. enclosures generally comprising flexible walls for maintaining a germ-free environment}
- A61G 10/023: {Rooms for the treatment of patients at over- or under-pressure or at a variable pressure}
- A61M 16/0672: {Nasal cannula assemblies for oxygen therapy}
- A61M 16/1055: {bacterial}
- A61M 16/1065: {in the expiratory path}
- A61M 16/107: {in the inspiratory path}
- A61M 16/024: {including calculation means, e.g. using a processor}
- A61M 16/06: Respiratory or anaesthetic masks
- A61M 16/105: {Filters (A61M16/047, A61M16/22 take precedence; water traps A61M16/08)}
- A61M 2202/0028: fluid entering a filter
- A61M 2202/0208: Oxygen
- A61M 2205/7509: for virus
- A61M 2205/7518: bacterial
- 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)}
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)

## Abstract

An isolation hood for respiratory treatment is disclosed. The isolation hood may include a head enclosure defining an interior volume configured to receive the head of a patient, and a neck seal configured to couple the head enclosure to a neck of the patient. The isolation hood may include an inlet port configured to be coupled to a distal end of a treatment source tube and to a first end of a treatment delivery tube, and an outlet port configured to be coupled to an inline particle filter configured to permit air to flow through the head enclosure. The neck seal and the inline particle filter are each configured to prevent viral/bacterial aerosolization outside the hood. The inlet and outlet ports may be attached to respiratory tubing and non-invasive ventilatory equipment to permit aerosol-generating procedures within the hood while preventing viral/bacterial aerosolization outside the hood.

## Claims

### Claim 1

An isolation hood for respiratory treatment, the isolation hood comprising:
a head enclosure defining an interior volume therein and configured to receive the head of a patient within the interior volume, the head enclosure having an opening at a bottom thereof, the opening configured to receive the neck of the patient therein, the head enclosure having a diameter between 35 cm and 51 cm, the head enclosure configured to have a space between the mouth and nose of the patient and a nearest wall of the head enclosure between 5 cm and 20 cm;
a neck seal disposed at the opening, the neck seal configured to couple the head enclosure to the neck of the patient, the neck seal configured to prevent aerosolized viral or bacterial particles from flowing from the interior volume to an ambient environment outside of the head enclosure;
an inlet port extending through the head enclosure, an outer end of the inlet port outside the head enclosure configured to be coupled to a distal end of a treatment source tube, an inner end of the inlet port inside the head enclosure coupled to a first end of a treatment delivery tube of a non-invasive aerosol-generating treatment placed on the head of the
patient, while a second end of the treatment delivery tube coupled to the head of the patient; and
an outlet port extending through the head enclosure, an outer end of the outlet port outside of the head enclosure configured to be coupled to an inline particle filter, the inline particle filter configured to prevent the aerosolized viral or bacterial particles from flowing from the interior volume to the ambient environment outside of the head enclosure,
the inlet port configured to connect to the non-invasive aerosol-generating treatment within the interior volume, the non-invasive aerosol-generating treatment including: bilevel positive airway pressure ventilation, continuous positive airway pressure ventilation, nebulizer treatments, oxygen cannula, mask, or high-flow nasal cannula treatments to the patient.

### Claim 2 (depends on 1)

The isolation hood of claim 1, wherein the inlet port is a first inlet port, the isolation hood further comprising a second inlet port extending through the head enclosure and configured to be coupled to the non-invasive aerosol-generating treatment or an input of one or more of air, gas, or oxygen.

### Claim 3 (depends on 1)

The isolation hood of claim 1, wherein the neck seal comprises a neck ring that is configured to be removably coupled to an inner edge of the head enclosure at the opening, the neck seal having an outer periphery attached to the neck ring and an inner aperture remote from the outer periphery.

### Claim 4 (depends on 1)

The isolation hood of claim 1, further comprising the inline particle filter coupled to the outer end of the outlet port.

### Claim 5 (depends on 4)

The isolation hood of claim 4, further comprising an inline positive end expiratory pressure valve coupled to the inline particle filter or the outer end of the outlet port and configured to maintain the interior volume above atmospheric pressure.

### Claim 6 (depends on 1)

The isolation hood of claim 1, wherein the neck seal comprises a hook and loop closure configured to fasten the neck seal around the neck of the patient.

### Claim 7 (depends on 1)

The isolation hood of claim 1, further comprising a pressure port, an outer end of the pressure port outside the head enclosure configured to be coupled to a distal end of a suction tube, the suction tube configured to remove gas from the interior volume within the head enclosure to maintain the interior volume below atmospheric pressure.

### Claim 8 (depends on 7)

The isolation hood of claim 7, further comprising a viral filter in line with the suction tube.

### Claim 9 (depends on 1)

The isolation hood of claim 1, further comprising a pressure port and an inline positive end expiratory pressure valve, an outer end of the pressure port outside the head enclosure configured to be coupled to a distal end of a high-pressure tube, the high-pressure tube configured to supply a pressurized gas into the interior volume within the head enclosure to maintain the interior volume above atmospheric pressure, the inline positive end expiratory pressure valve coupled to the pressure port or the outer end of the outlet port and configured to maintain the interior volume above atmospheric pressure.

### Claim 10 (depends on 1)

The isolation hood of claim 1, further comprising the mask, wherein the mask is a nebulizer treatment mask.

### Claim 11 (depends on 1)

The isolation hood of claim 1, further comprising the mask, wherein the mask is a continuous positive airway pressure system mask or a bilevel positive airway pressure system mask.

### Claim 12 (depends on 1)

The isolation hood of claim 1, further comprising the nasal cannula, wherein the nasal cannula is a high flow nasal cannula.

### Claim 13 (depends on 1)

The isolation hood of claim 1, wherein the inlet port is configured to provide a gas flow to washout excess CO2 from the interior volume of the isolation hood, the gas flow being provided at a flow rate that is sufficient to prevent hypercarbia.

### Claim 14 (depends on 1)

A kit comprising the isolation hood of claim 1 and an alternate neck seal, wherein the neck seal and the alternate neck seal have inner apertures having different diameters, the neck seal and the alternate neck seal each configured to be removably coupled to an inner edge of the head enclosure at the opening.

### Claim 15

A method of using an isolation hood for respiratory treatment, the method comprising:
placing a neck seal around a neck of a patient;
after the placing of the neck seal, coupling a first end of a treatment delivery tube to a head of the patient;
after the coupling of the first end of the treatment delivery tube, placing a head enclosure around a head and neck of a patient, the head enclosure defining an interior volume in which the head of the patient is received;
after the placing of the head enclosure, coupling the head enclosure to the neck seal, the head enclosure having an opening at a bottom thereof extending around the neck of the patient, an inner edge of the opening being coupled to a peripheral edge of the neck seal, the isolation hood having an inlet port and an outlet port each extending through the head enclosure, an outer end of the inlet port coupled to a distal end of a treatment source tube, an outer end of the outlet port coupled to an inline particle filter, an inner end of the inlet port coupled to a second end of the treatment delivery tube; and
flowing a medicine in a carrier gas or another aerosol-generating treatment through the treatment source tube and through the treatment delivery tube, wherein the
neck seal and the inline particle filter together prevent the aerosolized viral or bacterial particles from flowing from the interior volume to the ambient environment outside of the head enclosure.

### Claim 16 (depends on 15)

The method of claim 15, further comprising suctioning gas out of the interior volume through a pressure port extending through the head enclosure, the suctioning maintaining the interior volume below atmospheric pressure.

### Claim 17 (depends on 15)

The method of claim 15, further comprising flowing a pressurized gas into the interior volume through a pressure port extending through the head enclosure, the pressurized gas maintaining the interior volume above atmospheric pressure using at least one of: a pressure valve or a positive end expiratory pressure valve inline on the outlet port.

### Claim 18 (depends on 15)

The method of claim 15, wherein the second end of the treatment delivery tube comprises a nebulizer treatment mask, and the medicine is a nebulizer treatment compound.

### Claim 19 (depends on 15)

The method of claim 15, wherein the second end of the treatment delivery tube comprises a continuous positive airway pressure system mask, a bilevel positive airway pressure system mask, or a nasal cannula.