Portable anesthesia machine
Patent 6021777 Issued on February 8, 2000. Estimated Expiration Date: 
March 13, 2017. 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.
March 13, 2017. 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 3420232 3438372 3687137 3838687 3851645 Anaesthetic vaporizer Anesthetic vaporizer Anesthetic vaporizer Anaesthetic vaporisers Filling arrangement for an anesthetic vaporizer InventorsAssigneeApplicationNo. 816087 filed on 03/13/1997US Classes:128/204.13, Treating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.)128/203.12, Means for mixing treating agent with respiratory gas128/204.14Respiratory gas passed over surface of liquid treating agent in reservoirExaminersPrimary: Weiss, John G.Assistant: Srivastava, V. Attorney, Agent or FirmForeign Patent References
International ClassA61M 016/00AbstractA portable anesthesia machine includes a vaporizer having a combinant chamber for containing a liquid anesthetic agent and a pair of diluent stems extending therein for delivering a carrier gas thereinto and providing a vaporized anesthesia agent therefrom, with a generally arcuately shaped, slotted, baffle covering an orifice in each of the diluent stems and a cotton wick extending along the height of each of a pair of carrier stems. A calibrated knob and piston/cylinder assembly controls flow of carrier gas and diluent gas into and out of the combinant chamber. A flow control manifold allows the connection of a multiple number of carrier gases and calibrated flow of any selected carrier gas into the vaporizer. A well fill port provides a convenient point for filling or draining the combinant chamber.Field of SearchMeans for mixing treating agent with respiratory gasTreating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.) Respiratory gas passed over surface of liquid treating agent in reservoir Means for heating treating agent, respiratory gas, or mixture thereof Means for supplying anesthetic under patient's control Means for varying treating agent/respiratory gas ratio MEANS FOR PASSING RESPIRATORY GAS THROUGH BODY OF LIQUID BEFORE INHALATION | |
