Endotracheal tube having a non-sticking inner surface
Patent 3948273 Issued on April 6, 1976. Estimated Expiration Date: 
April 6, 1993. 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 6, 1993. 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 813918 3015332 3169527 3756244 InventorAssigneeApplicationNo. 505570 filed on 09/13/1974US Classes:128/207.15, Breathing passage occluder604/523Flexible catheter or means (e.g., coupling) used therewithExaminersPrimary: Pace, Channing L.Attorney, Agent or FirmAbstractAn endotracheal or tracheostomy tube having a non-sticking inside surface for allowing for the free movement of a suction catheter through the tube. The non-sticking surface is in the form of a series of grooves separated by ridges having thin edges extending through the length of the tube for engaging the surface of the catheter. | |
