Tracheostomy tube device with neck size adjustment means
Patent 3973569 Issued on August 10, 1976. Estimated Expiration Date: 
August 10, 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.
August 10, 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 2786469 3137299 3225767 InventorsAssigneeApplicationNo. 602433 filed on 08/06/1975US Classes:128/207.15Breathing passage occluderExaminersPrimary: Pellegrino, Stephen C.Attorney, Agent or FirmInternational ClassA61M 16/04 (20060101)AbstractTracheostomy tubes are provided with means that permits them to be held firmly in proper position upon a person on whom the device is installed. Such means comprises a fixed flange member, a slideable flange member and a plurality of slideable and separately removeable ring members positioned between the fixed and slideable flange members. | |
