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.

Abstract: A system for tracking anesthetic agent in a vaporizer reservoir includes 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, a gas temperature sensor configured to measure a temperature of the mixed gas provided from the vaporizer chamber, and an agent time module executable on a processor. The agent time module is configured to calculate a remaining agent time based on at least the gas flow rate, the pressure of the mixed gas, the temperature of the mixed gas, and an anesthetic concentration in the mixed gas. The remaining agent time is then provided for display on a display device.

Abstract: A system for tracking anesthetic agent in a vaporizer reservoir includes 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, a gas temperature sensor configured to measure a temperature of the mixed gas provided from the vaporizer chamber, and an agent time module executable on a processor. The agent time module is configured to calculate a remaining agent time based on at least the gas flow rate, the pressure of the mixed gas, the temperature of the mixed gas, and an anesthetic concentration in the mixed gas. The remaining agent time is then provided for display on a display device.

Abstract: A system and to automate the integrity check of a breathing system and inform a ventilator to deliver a compensated gas volume, and alert the user if a vital component of a breathing circuit is absent or not fully connected. The system and method utilize an open RFID tag on a first point of connection and a conducting ring on the second point of connection such that when a circuit connection is made, the open RFID tag becomes active and provides an RFID reader with data regarding the circuit connection.

Abstract: The system and method of the present application automates the integrity check of the breathing system and informs the ventilator to deliver the compensated gas volume, and alert the user if a vital component of breathing circuit is absent or not fully connected. The present application utilizes an open RFID tag on a first point of connection and a conducting ring on the second point of connection such that when a circuit connection is made, the open RFID tag becomes active and provides an RFID reader with data regarding the circuit connection.

Abstract: An improved carbon dioxide absorber for use in a closed circuit patient breathing system has a canister insertable in the breathing circuit for receiving recirculating breathing gases. The canister contains a pelletized CO2 absorbent material that removes the CO2 from the breathing gases passing through the absorber. A quantity of the CO2 absorbent material is treated with a chemical indicator such that the chemical indicator makes a color change indicative of the state of the absorptive capacity of the absorbent material. A separate quantity of the CO2 absorbent material is treated with a second chemical indicator. The second chemical indicator changes color to indicate the degree of dryness of the CO2 absorbent material. The second chemical indicator may comprise cobalt chloride and serves to indicate the potential for excessive heat generation and toxic gas generation conditions within the CO2 absorbent canister.

Abstract: A control system is disclosed herein. The control system includes a touch screen, and a computer operatively connected to the touch screen. The computer is configured to identify a first position at which the touch screen is contacted. The computer can identify the first position at any portion of the touch screen such that a user can blindly establish the first position. The computer is also configured to identify a second position at which the touch screen is contacted; estimate the magnitude and direction of the difference between the first position and the second position; and regulate a control parameter based on the magnitude and direction of the difference between the first position and the second position.