Anaesthetic vaporizer
June 22, 2014. 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 3251361 3351057 3741208 Low oxygen flow alarm for anesthesia systems Oxygen regulator and alarm system for an anesthesia machine Overpressure relief system Safety means for administration of anesthetic gas Apparatus for admixing liquid anesthetics and respiratory gas Device for evaluating the mixing of liquid anesthetic and a respiratory gas for patients Anesthetic vaporizer InventorAssigneeApplicationNo. 264112 filed on 06/22/1994US Classes:128/203.12, Means for mixing treating agent with respiratory gas128/203.14, Control means responsive to condition other than user's airway pressure128/203.25Means for varying treating agent/respiratory gas ratioExaminersPrimary: Lewis, Aaron J.Attorney, Agent or FirmForeign Patent References
International ClassA61M 015/00Foreign Application Priority Data1990-08-02 GBAbstractAn anesthetic vaporizer is disclosed having an inlet for receiving carrier gas and an outlet for delivering carrier gas with an anesthetic agent to a patient. The vaporizer has a passage that extends between the inlet and the outlet, a vaporizing chamber and a passageway extending from the vaporizing chamber to the outlet. A means such as a differential pressure transducer monitors the differences in pressure between the carrier gas in the passage and the anesthetic agent in the passageway to control the flow of the anesthetic agent through the passageway.Field of SearchMeans for indicating improper condition of apparatusMeans for mixing treating agent with respiratory gas Means for varying treating agent/respiratory gas ratio Treating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.) Means for sensing partial pressure, or amount, of component in gas mixture Means for heating treating agent, respiratory gas, or mixture thereof Electric Control means responsive to condition other than user's airway pressure | |
