Miniature implantable ultrasonic echosonometer
Patent 4109644 Issued on August 29, 1978. Estimated Expiration Date: 
January 12, 1997. 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.
January 12, 1997. 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 3662758 3757770 3763463 3827115 3853117 3872858 InventorAssigneeApplicationNo. 05/758721 filed on 01/12/1977US Classes:600/437, Ultrasonic367/2TRANSPONDERSExaminersPrimary: Michell, Robert W.Assistant: Jaworski, Francis J. Attorney, Agent or FirmInternational ClassesA61B 5/00 (20060101)A61B 8/08 (20060101) G01S 15/89 (20060101) G01S 15/00 (20060101) AbstractA miniature echosonometer adapted for implantation in the interior of an animal for imaging the internal structure of an organ, tissue or vessel. The echosonometer includes a receiver/transmitter circuit which is coupled to an ultrasonic transducer. Power is coupled to the echosonometer by electromagnetic induction through the animal's skin. Imaging signals from the echosonometer are electronmagnetically transmitted through the animal's skin to an external readout apparatus.Other References
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