Anesthetic vaporizers
Patent 5146915 Issued on September 15, 1992. Estimated Expiration Date: 
January 8, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 8, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3362404 3528418 3703172 3841560 Manufacture of salts of dicarboxylic acids and diamines Fresh gas device with mixer for medical and respiration apparatus Arrangement for adding liquid anesthetic to the respiratory gas supplied to a patient Electrically controllable anesthesia vaporizer Anesthetic vaporizer Vaporizer for an anesthetic medium Patent #: 5062999 InventorAssigneeApplicationNo. 638861 filed on 01/08/1991US Classes:128/203.14, Control means responsive to condition other than user's airway pressure128/203.12, Means for mixing treating agent with respiratory gas128/203.26, Means for heating treating agent, respiratory gas, or mixture thereof128/203.27, Electric128/204.14Respiratory gas passed over surface of liquid treating agent in reservoirExaminersPrimary: Burr, Edgar S.Assistant: Raciti, Eric P. Attorney, Agent or FirmForeign Patent References
International ClassA61M 011/00Foreign Application Priority Data1990-01-09 GBAbstractAn anesthetic vaporizer 1 for use particularly with anesthetic agents having a low boiling point comprises an inlet 2 for carrier gas an an outlet 4 for carrier gas and gaseous anesthetic agents. A first passage 6 extends between the inlet 2 and the outlet 4. A flow restrictor 8 is located within the passage 6. A second passage 10 extends between the first passage 6 at a location upstream of the flow restrictor 8 and a regulator 14. The regulator 14 controls the pressure of gaseous anesthetic agent when flowing through a third passage 26 extending from a vaporizing chamber 12 containing anesthetic agent to the first passage 6 at a location downstream of the flow restrictor 8. A flow control valve 28 is located in the third passage 26.Field of SearchMeans for heating treating agent, respiratory gas, or mixture thereofElectric Respiratory gas passed over surface of liquid treating agent in reservoir Means for mixing treating agent with respiratory gas Means for heating respiratory gas or respiration device Means for varying treating agent/respiratory gas ratio Control means responsive to condition other than user's airway pressure | |
