System and method for tracking anesthetic agent in a vaporizer reservior
AssigneeGeneral Electric Company
InventorsJulie Anne Mills, Joseph Lacey, Thomas Bender, II, Russell Kuzelka, David Michael Wahl
Life of this patent
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Abstract
A system for tracking anesthetic agent in a vaporizer reservoir can include a mass flow sensor configured to measure a flow rate entering or exiting a vaporizer chamber, a gas pressure sensor configured to measure a pressure of a mixed gas provided from the vaporizer chamber, and a processor to calculate a remaining agent time based on at least the gas flow rate, the pressure of the mixed gas, and an anesthetic concentration in the mixed gas. The processor can also provide the remaining agent time for display to a clinician.
Claims20
An anesthetic agent tracking system for tracking anesthetic agent in a vaporizer reservoir within an anesthesia vaporizer system, the anesthetic agent tracking system comprising:
- a mass flow sensor configured to measure a flow rate entering or exiting a vaporizer chamber;
- a gas pressure sensor configured to measure a pressure of a mixed gas provided from the vaporizer chamber;
- and
- a processor to:
- calculate a remaining agent time based on at least the gas flow rate, the pressure of the mixed gas, and an anesthetic concentration in the mixed gas;
- and
- provide the remaining agent time for display to a clinician.
An anesthetic agent tracking system for tracking anesthetic agent in a vaporizer reservoir within an anesthesia vaporizer system, the system comprising:
- an injector pressure sensor configured to sense a pressure of the anesthetic agent provided to an injector delivering liquid anesthetic agent to the vaporizer reservoir;
- an injector temperature sensor configured to sense a temperature of the anesthetic agent provided to the injector;
- and
- a processor to:
- identify a current agent amount;
- calculate a remaining agent time based on the pressure of the anesthetic agent, the temperature of the anesthetic agent, an orifice size of the injector or a known injector stroke volume, and at least one of an injection frequency or an injection duration of the injector;
- and
- provide the remaining agent time for display to a clinician.
A method for tracking anesthetic agent in a vaporizer reservoir within an anesthesia vaporizer system, the method comprising:
- measuring a gas flow rate entering or exiting a vaporizer chamber;
- measuring a pressure of a mixed gas provided from the vaporizer chamber;
- identifying an anesthetic concentration in the mixed gas provided from the vaporizer chamber;
- identifying a current agent amount of an anesthetic agent in the vaporizer reservoir;
- calculating a dispense rate based on the anesthetic concentration, the gas flow rate, and the pressure of the mixed gas;
- calculating a remaining agent time based on at least the current agent amount and the dispense rate;
- and
- providing the remaining agent time for display to a clinician.
Dependencies are inferred from the claim text.