Patent ID: 11951251
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A respiratory delivery system providing a bi-level pressure, the respiratory delivery system comprising:
a container configured to support a volume of liquid;
a pipe disposed in said container and configured to be at least partially submerged into the volume of liquid, said pipe defining at least one vent opening at a midsection thereof, wherein said pipe is configured to receive a flow of breathable gas from a gas source;
a variable buoyancy float disposed along said pipe and inside said container, said float configured to cyclically float up and down said pipe between a lower position and a higher position, wherein said at least one vent opening is occluded by said float in the higher position; and
an adjustable pressure regulator in fluid communication with said pipe;
wherein said float is configured to cyclically shift a pressure level of the breathable gas in said respiratory delivery system between a baseline pressure level when said float is in the lower position and gas bubbles are permitted to escape from said at least one vent opening, and a peak pressure level that is higher than the baseline pressure level when said float is in the higher position and said at least one vent opening is occluded by said float; and
wherein the peak pressure level is defined by a setting of said adjustable pressure regulator.