344 results about "Anesthetic gases" patented technology

The present invention relates to the field of medical devices used in the procedures of orotracheal or nasotracheal intubation. Oral or nasal endotracheal intubation procedures are commonly employed to secure a controlled airway and to deliver inhalant oxygen, anesthetic gases, and other therapeutic agents into the trachea and lungs of human and veterinary patients. Such intubation procedures carry a significant risk of dental injury resulting from contact between the laryngoscope blade used for visualization during intubation. The present invention provides an apparatus to reduce dental injury including a modified laryngoscope blade and a disposable insert which is designed to be received and retained in a single step by the modified laryngoscope blade. The disposable insert may be quickly secured by the user, and reduces both direct pressure and shear forces on the maxillary incisor teeth when the laryngoscope blade is placed in a patient's mouth during intubation.

The present invention prevents the leakage of anesthetic gas, and enables in vivo observation of a specimen such as small laboratory animals over a long period of time. An anesthetizing chamber comprises a chamber main body for housing a specimen such as a laboratory animal; an anesthetic gas supply part for supplying anesthetic gas to the chamber main body; and an anesthetic gas recovery part for recovering the anesthetic gas that is supplied into the chamber main body from the anesthetic gas supply part; wherein a transparent window is provided to at least the chamber main body.

To provide 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.

An inhalation mask, an artificial nose unit, an anesthetic gas concentration detector, an extension tube, an anesthesia attachment, and an elastic bag are in communicative connection in sequence. The elastic bag has a mixing chamber formed therein and has an anesthetic inlet, an air inlet, and an outlet port each formed at the boundary to the exterior. The anesthesia attachment includes a hollow structure and an evaporation injector syringe. The outlet port of the elastic bag is in communicative connection with the hollow structure through its opening, and the evaporation injector syringe tightly mates with the interior of another opening. The anesthetic introduced into the mixing chamber is vaporized and then mixed with air introduced from the air inlet into mixed gas. The mixed gas is supplied from the outlet port to the inhalation mask by compressing the elastic bag or other procedures.

A method and system for the fractionation and removal of nitrous oxide and other volatile halocarbon gas components from waste anesthetic gases using liquid oxygen are disclosed. Liquid oxygen is warmed for use in a healthcare facility by cooling and condensing waste anesthetic gases. A cold trap/fractionator is provided wherein selective components of the waste anesthetic gas are collected as a frost on the coils of the cold trap/fractionator by desublimation/deposition and/or condensation/solidification. In a periodic batch process, the collected frost is first thawed and the melted liquids or gases are then collected at various increasing temperatures, thereby separating the nitrous oxide and other halocarbon gas components by their varying melting points. The thawed anesthetic components are collected in separate tanks based on their melting points. Warmed by the waste anesthetic gases in the cold trap/fractionator, the oxygen is supplied to the healthcare facility for its normal uses.

The invention relates to an object stage of a multi-modal imaging system, which is characterized in that a lifting table and a slide device are arranged on a revolving stage of the lifting table; a slide block mechanism of a screw mandrel is arranged on the lifting table; the revolving stage is fixed on a slide block; the slide block mechanism of the screw mandrel drives the revolving stage to do up-and-down movement on the lifting table; the revolving stage comprises a mounting bracket; a driving gripper mechanism is arranged on the mounting bracket; the driving gripper mechanism comprises a hollow shaft driven by an electronic motor via a transmission mechanism; the upper end of the hollow shaft is communicated with an inhalator anesthesia apparatus via an anesthetic gas pipe; the lower end of the hollow shaft is provided with a gripper used for fixing a small animal; a driven gripper mechanism corresponding to the driving gripper mechanism is arranged on the mounting bracket; and the driving and the driven gripper mechanisms revolve synchronously. The object stage of the multi-modal imaging system can not only ensure that each detector in the multi-modal imaging system can acquire the full circular information of a tested object, but also keep the vital sign of the tested object in optimum conditions all the time, thus ensuring that the process of multi-modal imaging goes smoothly.

An anesthetic gas intermediate storage unit is provided having a first gas duct for passing through inspiration gas, a second gas duct for passing through expiration gas and an adsorption material (2), which can be influenced electrically, for an anesthetic, which is carried by a gas. The adsorption material is arranged in at least one gas duct for passing through breathing gas, and with a device for admitting expiration gas and inspiration gas alternatingly to the adsorption material (2), at least at an identical area for the intermediate storage of the anesthetic from the expiration gas to the inspiration gas. The device has openings, which divert the expiration gas and inspiration gas flowing in and out such that expiration gas and inspiration gas are admitted to the stationary adsorption material (2) alternatingly at an identical area.

The invention discloses an anesthetic dosage calculation method and an anesthetic dosage calculation system for an anesthesia machine. The method includes steps: using a monitoring device to measure anesthetic gas concentration and mixed gas flow, and using a main controller to record measuring time; using the main controller to calculate gaseous anesthetic dosage Q according to the anesthetic gas concentration, the mixed gas flow and the measuring time; and using the monitoring device to identify anesthetic gas types, and using the main controller to calculate liquid anesthetic dosage Q corresponding to the gaseous anesthetic dosage Q according to a gas molar volume calculation method. Errors caused by manual calculation can be avoided, accuracy and precision of anesthetic dosage calculation results can be improved effectively, and basis is provided for patient safety guaranteeing, operation costing and medical insurance claim.

The invention relates to the technical field of medical apparatus and instruments, and discloses an anesthetization spraying device with a quantitative spraying function. The device comprises a shell;a collecting box is fixedly mounted at the top end in the shell; a first exhaust pipe is fixedly connected to the left side of the collecting box; a baffle is hinged to the bottom end in the collecting box; first contact switches are fixedly installed at the top end of the baffle and the inner wall of the collecting box; first springs are fixedly installed at the top end of the baffle and the inner wall of the collecting box; an air bag is fixedly connected to the output end of the collecting box through a hose; a fixed ring is placed on the outer side of the air bag; and four sliding rods arranged at equal intervals are connected to the interior of the fixed ring in a sliding manner. According to the device, the situation that in a ventilation process of a patient in an anesthetization process, atomized airflow interacts with gas exhaled out of the body of the patient, so that the pressure intensity of the patient in the ventilation process is relatively large and shortness of breathof the patient is caused is avoided; and real-time adjustment can be conveniently carried out according to the anesthetic gas demand of the patient.

A demand valve is fixedly and rigidly mounted on an anesthetic gas mixer stand in close proximity to the gas mixer. A single-patient-use disposable breathing and scavenging circuit is adapted to be removably connected to the demand valve output for permitting a patient to breath gas, or a mixture gases, supplied by the gas mixer through a remotely located disposable face mask included as a portion of the breathing circuit. The breathing circuit further includes a scavenger portion for collecting exhaled waste gas from the face mask. The scavenger portion of the circuit also is disposable.

A gas concentration measuring apparatus is in miniaturized form and permits the measurement of anesthetic gas components. A variable interferometer is provided on the basis of a Fabry Perot interferometer (1) wherein the mirrors (2, 3) can be changed in spacing with respect to each other. The mirrors (2, 3) have coatings which make possible the transmission in two spectral ranges (Δλ₁, Δλ₂).

A method for measuring the anesthetic agent consumption in a ventilation system has a breathing circuit which contains a gas mixer (1) and an anesthetic agent metering device (2). The anesthetic agent quantity, which is consumed over a pregiven time interval in the ventilation system, is determined from the sum of the determined anesthetic gas volume flows in the ventilation system which are integrated over the pregiven time interval.

The invention discloses an anesthetic gas purification device for anesthesiology department clinics. The anesthetic gas purification device comprises a storage can, an oxygen inlet pipe is arranged atthe left end of the storage can, a first one-way valve is arranged at the right end of the oxygen inlet pipe, an anesthetic gas inlet pipe is arranged at the upper end of the side face of the storagecan, a second one-way valve is arranged at the lower end of the anesthetic gas inlet pipe, a PLC is arranged at the front end of the side face of the storage can, an oxygen concentration detector isarranged at the lower end of the side face of the storage can, a connecting pipe is arranged at the right end of the storage can, a valve is arranged at the side face of the connecting pipe, and a filter is arranged at the end, away from the storage can, of the connecting pipe. The anesthetic gas purification device for the anesthesiology department clinics is simple in structure, mixed gas of oxygen and anesthetic gas can be sterilized, disinfected and filtered, the purification effect of the mixed gas is improved, harmful substances in gas are prevented from harming the human body, excessiveanesthetic gas can be adsorbed and purified, and the anesthetic gas purification device is easy to operate and high in practicability.