Tracheostomy tube with ring pull removable inner cannula
Patent 4817598 Issued on April 4, 1989. Estimated Expiration Date: 
June 8, 2007. 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.
June 8, 2007. 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 ReferencesInventorAssigneeApplicationNo. 07/059078 filed on 06/08/1987US Classes:128/207.14, Respiratory gas supply means enters mouth or tracheotomy incisionD24/110.5Inhalation tube or mouthpiece type (6)ExaminersPrimary: Coven, Edward M.Assistant: Lacyk, John P. Attorney, Agent or FirmInternational ClassA61M 16/04 (20060101)AbstractA removable inner cannula is provided with grooved-ribbed locking member end for snap-fit interconnection inside an outer cannula. The inner cannula includes a ring-pull grasping member associated with the locking member which is easily accessible for withdrawal of the inner cannula from the outer cannula connection. | |
