Regulation of delivery of multiple anesthetic agents to a patient from an anesthetic breathing apparatus
AssigneeMaquet Critical Care AB
InventorUrban Blomberg
Life of this patent
Estimating the term…
Abstract
In a method and system of regulating multiple anesthetic agents in a breathing circuit of an anesthetic breathing apparatus is disclosed, a primary anesthetic agent added to the breathing circuit is regulated to a set desired value of the amount of the primary anesthetic agent, and a secondary anesthetic agent in the breathing circuit is regulated to an amount of said secondary anesthetic agent that it is equal to or less than a defined threshold level, e.g. of the concentration, of the secondary anesthetic agent.
Claims15
A system comprised in an anesthetic breathing apparatus, for regulating multiple anesthetic agents in a breathing circuit of said anesthetic breathing apparatus, said system comprising:
- a gas analyzer configured to measure concentrations of two or more anesthetic agents simultaneously;
- at least one vaporizer configured to add anesthetic agent(s) to a fresh gas flow;
- and
- a control system configured to regulate a dose of at least one primary anesthetic agent added to said breathing circuit via said fresh gas flow and a dose of at least one secondary anesthetic agent already present in said breathing circuit by controlling a ratio of re-breathed gas and fresh gas in said breathing circuit,
- wherein said at least one primary anesthetic agent and at least one secondary anesthetic agent are volatile anesthetic agents, said at least one primary anesthetic agent was previously not present in the breathing circuit, and said ratio ensures that an effect of mixed anesthetic agents is on a controlled level.
A non-transitory, computer-readable data storage medium encoded with programming instructions, said storage medium being loaded into a control computer that is configured to operate a breathing circuit of an anesthetic breathing apparatus, and said programming instructions causing said control computer to execute steps comprising:
- regulate at least one primary anesthetic agent added to the breathing circuit via a fresh gas flow;
- and
- regulate at least one secondary anesthetic agent that is already present in said breathing circuit by controlling a ratio of re-breathed gas and fresh gas in said breathing circuit,
- wherein said at least one primary anesthetic agent and said at least one secondary anesthetic agent are volatile anesthetic agents, said at least one primary anesthetic agent was previously not present in the breathing circuit, and said ratio ensures that an effect of mixed anesthetic agents is on a controlled level.
Dependencies are inferred from the claim text.