Systems and Methods for Delivery of Therapeutic Gas

摘要

Therapy gas delivery systems that provide run-time-to-empty information to a user of the system and methods for administering therapeutic gas to a patient. The therapeutic gas delivery system may include a gas pressure sensor attachable to a therapeutic gas source that communicates therapeutic gas pressure data to a therapeutic gas delivery system controller, a gas temperature sensor positioned to measure gas temperature in the therapeutic gas source that communicates therapeutic gas temperature data to the therapeutic gas delivery system controller, at least one flow controller that communicates therapeutic gas flow rate data to the therapeutic gas delivery system controller, at least one flow sensor that communicates flow rate data to the therapeutic gas delivery system controller, and at least one display that communicates run-time-to-empty to a user of the therapeutic gas delivery system. The therapeutic gas delivery system controller of the system includes a processor that executes an algorithm to calculate the run-time-to-empty from the data received from the gas pressure sensor, temperature sensor, flow controller and flow sensor, and directs the result to the display.

主权项

1. A electronically controlled gas blending device, comprising:
a flow control channel in fluid communication with a therapeutic gas supply, wherein the flow control channel comprises:
at least one secondary subsystem flow control valve, wherein the at least one secondary subsystem flow control valve is configured to be in communication over a communication path with a therapeutic gas delivery system controller; andat least one secondary subsystem flow sensor, wherein the at least one secondary subsystem flow sensor is in fluid communication with the at least one secondary subsystem flow control valve, and the at least one secondary subsystem flow sensor is configured to be in communication over a communication path with a therapeutic gas delivery system controller; one or more inlets configured to connect to a gas supply; one or more inlet flow sensors in fluid communication with at least one of the one or more inlets; a blending junction in fluid communication with the one or more inlet flow sensors, and the blending junction is connected to and in fluid communication with the flow control channel; and a therapeutic gas delivery system controller configured to be in electrical communication with at least the secondary subsystem flow control valve and the at least one secondary subsystem flow sensor to form a feedback loop, and configured to receive a flow value from the at least one inlet flow sensors and calculate a flow rate of therapeutic gas through the at least one secondary subsystem flow sensor to provide an intended dose of therapeutic gas exiting the blending junction.