Tracheostomy tube
Patent 4033353 Issued on July 5, 1977. Estimated Expiration Date: 
July 5, 1994. 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.
July 5, 1994. 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. 05/623115 filed on 10/16/1975US Classes:128/207.15Breathing passage occluderExaminersPrimary: Burr, Edgar S.Assistant: Sewell, Paul T. Attorney, Agent or FirmInternational ClassA61M 16/04 (20060101)AbstractA tracheostomy tube, shaped to conform to the trachea, and including an inner and an outer cannula. The extremities of the cannulae inserted in the trachea are in frictional contact to prevent significant gas flow through the annular space between the cannulae. The opposite extremity of the outer cannula is shaped for connection to a respirator with the corresponding end of the inner cannula attached to an adaptive member through a nutating connection. The adaptive member is shaped at its inner end for connection to the outer cannula and at its outer end to a respirator. The outer cannula may include an inflatable cuff for sealing the cannulae within the trachea and a flexible neck flange for limiting the motion of the tracheostomy tube. | |
