Tracheostomy tube with disposable inner cannula
Patent 4315505 Issued on February 16, 1982. Estimated Expiration Date: 
April 7, 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.
April 7, 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 2765792 3606669 Wedge seal for a tracheotomy tube Tracheostomy tube Patent #: 4033353 InventorsAssigneeApplicationNo. 06/137626 filed on 04/07/1980US Classes:128/200.26, Means placed in body opening to facilitate insertion of breathing tube128/207.15Breathing passage occluderExaminersPrimary: Recla, Henry J.Attorney, Agent or FirmInternational ClassA61M 16/04 (20060101)AbstractA tracheostomy tube includes an outer cannula and a removable, disposable inner cannula. The inner cannula is provided with a tapered portion located just behind its distal tip which forms simultaneously an air tight seal with the outer cannula and a stop device for preventing the protrusion of the tip substantially beyond the end of the outer cannula. The stop device furthermore compensates for variations in the length of the inner cannula by controlling the position of the tip between a location flush with the end of the outer cannula and one just slightly beyond. A coupling connector is mounted on the proximal end of the inner cannula to provide easy, releasable attachment of the inner cannula to the outer cannula. The inner cannulae are inexpensively constructed from a soft, flexible polyvinyl chloride material and are dimensionally compatible with any particular outer cannula.Field of SearchMeans placed in body opening to facilitate insertion of breathing tubeMeans using rescuer's breath for supplying respiratory gas to another person Respiratory gas supply means enters mouth or tracheotomy incision Breathing passage occluder Valve for controlling gas flow Holding strap extending circumferentially of head or neck | |
