345 results about "Anesthetic gases" patented technology

An electronic anesthesia delivery apparatus for mixing a carrier gas and first and second anesthetic agents comprises a chassis having an electronic vaporizer, the vaporizer having a first anesthetic chamber and a second anesthetic chamber retaining the first anesthetic agent and the second anesthetic agent, a carrier gas input port in flow communication with the first anesthetic chamber and the second anesthetic chamber, a precision orifice and an electronic control valve corresponding to each of the chambers being downstream of the gas input port, each of the chambers having a conduit in flow communication with the carrier gas input port, each of the conduits extending into each of the chambers below an upper level of anesthetic agent, wherein the carrier gas passes through a porous diffuser near an end of the conduit and bubbles through the anesthetic agent, the chamber further comprising an anesthetic gas outlet port, an electronic touchscreen display for controlling carrier gas flow rate to the first anesthetic chamber and the second anesthetic chamber, the electronic touchscreen display further allowing control of concentrations of the anesthetic agent in an anesthesia to a patient by intermittently opening and closing of the electronic control valve, a circuit board having an input / output portion, the circuit board in electronic communication with the electronic touchscreen display, the input / output portion receiving temperature of the anesthetic agent, the electronic anesthesia delivery apparatus allowing use of a first anesthetic agent while a second anesthetic agent is one of either replaced or substituted in the second chamber.

To provide a process and an apparatus for treating a waste anesthetic gas containing a volatile anesthetic and nitrous oxide discharged from an operating room by introducing the gas into an adsorbing cylinder filled with an adsorbent, where the volatile anesthetic contained in the waste anesthetic gas is adsorbed and thereby removed, and successively introducing the gas into a catalyst layer filled with a nitrous oxide decomposition catalyst, where nitrous oxide is decomposed into nitrogen and oxygen. By using the process and the apparatus for treating a waste anesthetic gas of the present invention, a volatile anesthetic having a possibility of destroying the ozone layer or nitrous oxide as a global warming gas can be made harmless while preventing the release into atmosphere.

A flow probe for use in a humidification system is disclosed. The flow probe is adapted to be positioned in a humidified gases flow (for example oxygen or anesthetic gases) such as that which is provided to a patient in a hospital environment. The flow probe is designed to provide both temperature and flow rate sensing of the gases flow by incorporating two sensors (preferably thermistors) and the shape and alignment of the probe enables accurate readings by reducing the occurrence of condensation on the sensors. A number of possible applications are disclosed wherein the flow sensor is included in humidification control systems which provide a patient with a desired humidity level or simplify the amount of user input required or wherein the flow sensor provides a controller with flow information which may then be used to determine certain, possibly dangerous, conditions (such as incorrect flow sensor placement, breathing circuit disconnected, no water in the humidification chamber or humidity out of required limits).

A detector for monitoring the low levels of differential pressures and the rate of mass flow rate of gas (air, e.g.) in a duct. The sensor's temperature is maintained at a constant gradient above temperature of the flowing gas, typically 4-7° C. higher. The detector consists of two thermally decoupled sensors—one is the air temperature sensor and the other is a temperature sensor coupled to a heater. The sensors are connected to an electronic servo circuit that controls electric power supplied to the heater. The sensors are positioned outside of the air duct and coupled to the duct via a relatively thin sensing tube protruding inside the duct. The end of the tube has an opening facing downstream of the gas flow, thus being exposed to a static gas pressure. The detector can be employed in fuel burners of the HVAC systems, internal combustion engines, medical equipment to control flow of anesthetic gases, in the security systems to monitor minute changes in air pressure resulted from opening and closing of doors and windows in a protected facility.

This invention discloses one paralyse gas type area sort identification device and method, wherein, the device uses multiple measurement filter slice and one reference filter to get multiple measurement signals and one reference signal to get signal to compute different concentration paralyse gas through each channel relative absorptive parameters; the relative absorptive parameter takes look of certain area polymer characters to establish two-dimensional or higher relative absorptive parameters coordinates according to the paralyse gas infrared property and to get each paralyse gas each relative map area.

The invention provides a catalyst obtained by loading at least one noble metal selected from the group consisting of rhodium, ruthenium and palladium on a support selected from silica and silica alumina, and a method for decomposing nitrous oxide using the catalyst thereof. The catalyst for decomposing nitrous oxide of the present invention cannot be easily affected by a volatile anesthetic contained in a waste anesthetic gas, can recover the activity by activation and regeneration even when deteriorated, and can reduce the amount of NOx generated to less than the allowable concentration.