초록 ▼

An anesthesia machine output monitor (AMOM) which performs the functions of measuring the flow and composition of anesthesia gases delivered by the anesthesia machine, measuring on-line the amount of inhaled anesthetic used during a procedure requiring an anesthetic agent, measuring on-line the cost

An anesthesia machine output monitor (AMOM) which performs the functions of measuring the flow and composition of anesthesia gases delivered by the anesthesia machine, measuring on-line the amount of inhaled anesthetic used during a procedure requiring an anesthetic agent, measuring on-line the cost of inhaled anesthetic used during a procedure requiring an anesthetic agent, and integrating with an automated anesthesia recorder (AAR) to allow the recording of anesthetic gas flow rates and composition during a procedure and the cumulative cost of the anesthetic gases used during the procedure. The anesthesia gas flow rates and composition are measured using a modified infrared anesthetic gas analyzer that measures anesthetic gas composition and a pitot tube that is inserted in the common gas outlet of the anesthesia machine in order to measure the composition and flow rates of gases as they exit the anesthesia machine. Anesthetic gas sampling is accomplished by aspirating anesthetic gases from a sampling port integrated into the pitot tube. The measured gas analog signals are then captured from an I/O port of the capnograph and provided to a processor for on-line processing. An automated anesthesia recorder is preferably provided to permit cost and compliance records to be maintained for each use of the anesthesia machine.

대표청구항 ▼

[ We claim:] [1.] A device for measuring anesthetic gas concentration delivered to a patient during a medical procedure requiring an anesthetic gas, comprising:a supply which provides an anesthetic gas to a patient during a medical procedure;a capnograph which determines flow rates and concentration

[ We claim:] [1.] A device for measuring anesthetic gas concentration delivered to a patient during a medical procedure requiring an anesthetic gas, comprising:a supply which provides an anesthetic gas to a patient during a medical procedure;a capnograph which determines flow rates and concentrations of respective gases input thereto;a gas sampling device which provides a sample of gas output from said supply to said capnograph;a processor which processes the flow rates and concentrations of gases in said sample provided to said capnograph by said gas sampling device to determine a cumulative cost of at least anesthetic gas used during said medical procedure; anda display which displays at least said flow rates and gas concentrations of said sample to an operator of said device.