Nasal cannula
Patent 4367735 Issued on January 11, 1983. Estimated Expiration Date: 
January 11, 2000. 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 11, 2000. 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 2693800 2751906 3013556 3858615 3867946 Support for anesthetic gas delivery hoses and endotracheal tubes Endotracheal tube Patent #: 4050466 InventorApplicationNo. 06/108667 filed on 12/31/1979US Classes:128/207.18, Respiratory gas supply means enters nasal passage128/203.22, Means for supplying, or permitting inhalation of, separate streams of treating agent/respiratory gas mixture through nasal passages128/207.11, Structure of means securing mask to head128/207.17Holding strap extending circumferentially of head or neckExaminersPrimary: Recla, Henry J.Attorney, Agent or FirmInternational ClassA61M 16/06 (20060101)AbstractAn improved nasal cannula is made of a soft pliable material and has two hollow tubular prongs which are ribbed to prevent significant closure of the airways through the prongs upon bending of the prongs and a base adapted to receive a soft strip of foam-like material which can be attached to a skull cap for securing the prongs of the cannula in the nasal passages of a patient.Field of SearchMeans for mixing treating agent with oral exhalation and directing mixture into nasal passageMeans for supplying, or permitting inhalation of, separate streams of treating agent/respiratory gas mixture through nasal passages Holder solely supported by nose Face mask covering a breathing passage Including means inserted in nasal passage Structure of means securing mask to head Respiratory gas supply means enters nasal passage Holding strap extending circumferentially of head or neck Means for supplying respiratory gas under positive pressure | |
