46 results about "Volatile anesthetic" patented technology

Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.

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.

The present invention provides methods for reducing pain in a subject in need of such pain reduction by delivering, e.g., intrathecally or epidurally, a volatile anesthetic dissolved in a solution comprising an extractive solvent, e.g., DMSO or NMP, in an amount effective to reduce pain. Chronic or acute pain may be treated, or the anesthetic may be delivered as a regional anesthesia to a subject to anesthetize a portion the subject prior to a surgery, hi certain embodiments, isoflurane, halothane, enflurane, sevoflurane, desflurane, methoxyflurane, or mixtures thereof may be used. Dosing regimens including a one-time administration, continuous and/or periodic administration are contemplated.

The invention provides a method for managing experimental animal respiration, which utilizes a clinic anesthesia machine for the anesthetization of the animal experiment, performs tracheal cannula on an animal, adopts an animal temperate maintenance instrument to keep warm, and keeps the body temperature at the physical level (37 plus or minus 0.5 DEG C) all the time during the anesthesia process. The method is used for solving the animal respiration management problem during the traditional anesthesia process, the same inhalation anesthesia concentration and the stable body environment are also maintained during the whole anesthesia process. By the method, not only is the stress response of the experimental animal reduced, but also the vital sign stability of the experimental animal can be maintained during the inhalation anesthesia process of a long time (such as 4 hours), the mortality is low and the reviving can be stable, and the influences of trauma stress, hypoxia-ischemia, hypercapnia, acidosis and other interference factors on the experimental result can be eliminated. The method effectively controls the respiratory tract of the experimental animal, and also maintains the inhalation anesthesia of the volatile anesthetics with constant concentration, which is output to the animal.

The invention relates to a passive portable anesthesia machine. The passive portable anesthesia machine comprises a box, a breathing pipeline, an exhaling loop and an oxygen pipe, and is characterized in that an anesthetic gas concentration regulating and controlling device is arranged on the upper part inside the box; an anesthetic waste gas absorbing device is mounted at the bottom inside the box; the anesthetic waste gas absorbing device comprises an anesthetic storage tank, a waste gas absorbing particle storage tank A and a waste gas absorbing particle storage tank B; a waste gas pressure reducing valve A is connected with the bottom of the waste gas absorbing particle storage tank A; a primary anesthetic exhausting pipe and a secondary anesthetic exhausting pipe are connected with the bottom of the anesthetic gas concentration regulating and controlling device; one end of the exhaling loop extends out of the box, and the other end of the exhaling loop is communicated with the waste gas absorbing particle storage tank B; the oxygen pipe is communicated with the anesthetic gas concentration regulating and controlling device; the breathing pipeline is communicated with the secondary anesthetic exhausting pipe. The passive portable anesthesia machine has the advantages of being light in weight, wide in application range, free of an external power supply, capable of maintaining the concentration of a volatile anesthetic constant, and capable of maintaining the temperature of the anesthetic constant by heat generated during reaction of water and carbon dioxide in gas exhaled by a patient with the waste gas absorbing device.

The invention discloses a method for measuring concentration of volatile anesthetics in samples by automatic headspace gas chromatography. The method is suitable for measuring the concentrations of volatile anesthetics like methoxyflurane, enflurane, isoflurane, sevoflurane and desflurane in samples. The samples can be solutions containing the substances to be measured, as well as can be in vitro biological samples containing the substances to be measured, such as blood, urine, tissue fluid. The method is simple, fast and exact, suitable for measuring and analyzing laboratory samples, and suitable for result measurement of a plurality of samples in clinical monitoring.

An anaesthetic halocarbon capture system is provided. The system comprises a pressure-intolerant sleeve containing filter material for capturing one or more types of anaesthetic halocarbon prior to supercritical fluid extraction, and a pressure-tolerant housing into which the sleeve can be inserted so as to permit exposure of the sleeve contents to pressures required for supercritical fluid extraction.

Devices and methods of making and using the device for the non-invasive detection of volatile anesthetics are provided. The devices are capable of measuring the concentration of volatile anesthetics transdermally and in a non-invasive manner. The devices and methods can be applied in detection of volatile anesthetics in samples collected from human skin perspiration.

An electric continuous flow device of a circulation circuit relates to a continuous flow device of a circulation loop, and solves the problems that a semi-open anesthetic loop for pediatric anesthesia causes low respiratory efficiency, the unutilized oxygen and volatile anesthetics are discharged into the atmosphere, medical resources are wasted, the environment is polluted, and a pediatric anesthetic close circulation loop has large resistance and high respiratory power consumption. A disc flow deflector is fixedly installed on a fan blade and is positioned at one side of an air inlet side, the external diameter of the disc flow deflector is d1, the external diameter of the fan blade is d2, and di equals to d2 minus 4mm; and the control signal output end of a touch screen is connected with the control signal input end of an external rotor electric machine, the signal output end of the external rotor electric machine is connected with the signal input end of the touch screen, the loop inspiration port of a respiration loop is communicated with the inspiration end of a disposable anesthetic loop through the external rotor electric machine, and the loop expiration port of the disposable anesthetic loop is communicated with a respiration loop through a dioxide carbon absorption unit. The electric continuous flow device is used in the anesthetic loop systems for children and adults.

The invention discloses a preparation method of a fat emulsion composition for volatile anesthetic injection, which comprises the following steps: distributing emulsifiers into a first emulsifier and a second emulsifier according to a weight ratio of 1: 10-10: 1, and forming blank emulsion by the first emulsifier and oil for injection, the blank emulsion and the second part of emulsifier participate in forming a pre-emulsion, and the pre-emulsion and the volatile anesthetic participate in forming the fat emulsion composition for volatile anesthetic injection. In addition, the invention also provides an improved fat emulsion composition for volatile anesthetic injection, and the fat emulsion composition can not generate a bottle flushing phenomenon during high-temperature sterilization, and can be stored at room temperature for a long time.