US 12,491,331 B2 · Dual-pressure respiratory assistance device

Abstract

A respiratory delivery system providing a bi-level pressure airflow. The system includes respiratory and pneumatic circuits. The respiratory circuit includes a respiratory gas supply, a patient interface, and a bi-level pressure regulator. The respiratory gas supply supplies a respiratory gas to the patient interface via a first conduit. The bi-level pressure regulator is coupled to the patient interface via a second conduit and is configured to cyclically alternate the respiratory gas passing through the bi-level pressure regulator between a low-pressure level and a high-pressure level. The pneumatic circuit includes a pneumatic gas supply and a pneumatic cycler configured to output a cycling pressure level. The cycler is coupled to the bi-level pressure regulator via a third conduit. The bi-level pressure regulator cyclically alternates the pressure level of the respiratory gas between the low-pressure level and the high-pressure level with the timing defined by the cycling of the pneumatic gas.

Claims18

Dependent claims

A respiratory delivery system providing a bi-level pressure level airflow, the respiratory delivery system comprising:

a gas supply and a patient interface, wherein the gas supply is coupled to the patient interface via a first conduit;
and
a low-pressure regulator and a high-pressure regulator, wherein the patient interface is coupled to both regulators via a second conduit;
and
a pneumatic cycler comprising a variable buoyancy float;
wherein the pneumatic cycler is configured to alternately allow a release of gas through the low-pressure regulator, and wherein a low pressure is maintained, or to obstruct the release of gas through the low-pressure regulator, causing a release of gas through the high-pressure regulator, wherein a high-pressure level is maintained.

3 more elements

A respiratory delivery system providing a bi-level pressure airflow, the respiratory delivery system comprising:

a respiratory circuit comprising:
a respiratory gas supply and a patient interface, wherein the respiratory gas supply is configured to supply a respiratory gas airflow to the patient interface, and wherein the respiratory gas supply is coupled to the patient interface via a first respiratory conduit;
and
a low-pressure regulator and a high-pressure regulator, wherein the patient interface is coupled to both regulators via a second respiratory conduit, wherein the low-pressure regulator and the high-pressure regulator are configured to determine a pressure level of the respiratory gas airflow passing through the low-pressure regulator and the high-pressure regulator between a low-pressure level and a high-pressure level;
and
a pneumatic circuit comprising a pneumatic cycler comprising a variable buoyancy float which is configured to cycle the pressure of a pneumatic gas airflow in the pneumatic circuit, wherein because the pneumatic circuit is coupled to the respiratory circuit via a pneumatic conduit, the pneumatic cycler is configured to cyclically alternate the pressure level of the respiratory gas airflow in the respiratory circuit between the low-pressure level and the high-pressure level as defined by the cycling pressure level of the pneumatic gas airflow.

3 more elements

Dependencies are inferred from the claim text.

Dual-pressure respiratory assistance device

Life of this patent

Dual-pressure respiratory assistance device

Life of this patent

Abstract

Claims18