Drug delivery system for conscious sedation

摘要

System for supplying gas to a patient for the purpose of producing analgesia in the patient, comprising: a) a source of oxygen (16); b) a reservoir (12) containing gas that produces analgesia, in which the gas that produces analgesia is selected from the group consisting of halothane and halogenated ethers, the halogenated ethers being selected from the enflurane, isoflurane group, sevoflurane and desflurane; (c) a supply manifold (22) that has a pair of inputs connected to the oxygen source (16) and to the reservoir (12), respectively, and that has an outlet, the manifold (22) providing a mixture of oxygen and of gas that produces analgesia, said manifold (22) comprising a pressure regulator (18) and a flowmeter (20) connected in fluid communication, the manifold (22) being configured to accurately measure the dose of the gas that produces analgesia from the tank (12), up to +/- 0.1% of the gas flow or less, to mix said gas that produces analgesia in strict proportions with the oxygen; and d) means for transporting the mixture from the outlet of the supply manifold (22) to the patient, in which the manifold (22) is configured to regulate the gas flow and the concentration of the gas that produces analgesia to the sedation limit aware.