Telemetry system for an implantable medical device
January 29, 2013. 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 ReferencesProgrammable body stimulator Pacemaker programmer with telemetric functions Telemetry system for a medical device Coherent inductive communications link for biomedical applications Data communication system Mini-well temperature profiling process Telemetry format for implanted medical device Patent #: 5127404 InventorsAssigneeApplicationNo. 010921 filed on 01/29/1993US Classes:607/32, Communicating with pacer (e.g., telemetry)128/903RADIO TELEMETRYExaminersPrimary: Cohen, Lee S.Assistant: Parker, Marianne Attorney, Agent or FirmInternational ClassA61N 001/00AbstractA method of and apparatus for telemetering analog and digital data transcutaneously between an implantable medical device and an external receiver, such as between an external programmer and an implantable cardiac pacer. A damped carrier at 175 kilohertz is pulse position modulated by digital data. The data, along with synchronization and identification codes, are positioned into predefined ranges within predefined frames as measured by individual time periods. The data is uniquely identified by the position of one or more bursts of the carrier within the predefined range. An automatically initiated hand shake protocol maintains the link over slight variations in programmer head position with an indicator notifying the operator when repositioning is required. Analog data may be transferred in digital form or alternatively transferred using phase modulation of the carrier bursts. A cyclic redundancy code is used for link error detection. The digital data may be encoded/decoded in bit or byte format using hardware and/or software elements. | |
