| 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 therapeutic gas delivery system, comprising:
at least one gas supply subsystem comprising,
a gas source coupling configured to receive a therapeutic gas source and form a fluid flow connection with the therapeutic gas source;a gas source valve adjacent to and in fluid communication with the gas source coupling, wherein the gas source valve is configured to have at least an open state and a closed state;a gas pressure sensor adjacent to and in fluid communication with the gas source valve, wherein the gas source valve provides a gas flow path from the gas source coupling to the gas pressure sensor, and the gas pressure sensor is configured to measure a gas pressure at the gas source coupling at least when the gas source valve is in an open state, to be in communication over a communication path with a therapeutic gas delivery system controller comprising a CPU, and to communicate a pressure value over the communication path to the therapeutic gas delivery system controller; anda therapeutic gas flow regulator down stream from the gas pressure sensor, gas source valve, and gas source coupling, and in fluid communication with the gas source coupling, gas source valve, and gas pressure sensor; one or more display(s) configured to be in communication over a communication path with the therapeutic gas delivery system controller, wherein the CPU of the therapeutic gas delivery system controller is configured to calculate a value for a run-time-to-empty from a volume value, a pressure value communicated from the gas pressure sensor, and an average therapeutic gas consumption rate calculated by the CPU from the gas flow rate value communicated from the therapeutic gas flow controller, and wherein the system display is configured to display the calculated run-time-to-empty value. |
