Electronic vaporizer system and method of controlling the same
AssigneeGE Precision Healthcare LLC
InventorsJoseph J. Lacey, Russell J. Kuzelka
Life of this patent
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Abstract
An electronic vaporizer system includes an anesthetic sump containing anesthetic agent, a vaporizer unit that vaporizes the anesthetic agent from the sump and delivers the vaporized agent to a patient breathing circuit, and a gas sensor configured to measure end tidal concentration of the anesthetic agent and exhalation gasses from the patient. A control system is configured to receive the measured end tidal concentration of anesthetic agent and compare the measured end tidal concentration to a desired end tidal concentration to be maintained for the patient. The vaporizer unit is then automatically controlled to deliver an amount of vaporized agent to the patient based on the comparison.
Claims21
An electronic vaporizer system comprising:
- an anesthetic sump containing anesthetic agent;
- a vaporizer unit that vaporizes the anesthetic agent from the sump and delivers the vaporized agent to a patient breathing circuit;
- a gas sensor configured to measure end tidal concentration of the anesthetic agent in exhalation gases from a patient;
- a control system configured to:
- receive the measured end tidal concentration of the anesthetic agent;
- compare the measured end tidal concentration to a desired end tidal concentration to be maintained for the patient;
- and
- automatically control the vaporizer unit to deliver an amount of vaporized agent to the patient breathing circuit based on the comparison.
A method of controlling a vaporizer system configured to vaporize an anesthetic agent and deliver the vaporized agent to a patient breathing circuit, the method comprising:
- measuring end tidal concentration of the anesthetic agent in exhalation gases from a patient;
- comparing the measured end tidal concentration to a desired end tidal concentration to be maintained for the patient;
- and
- automatically controlling a vaporizer unit to deliver an amount of vaporized agent to the patient breathing circuit based on the comparison so as to maintain the measured end tidal concentration within a predetermined range of the desired end tidal concentration.
Dependencies are inferred from the claim text.