Implantable device with digital waveform telemetry

Details Implantable device with digital waveform telemetry Implantable device with digital waveform telemetry

1998-02-06

1999-11-02

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1362

Patent

active

059787139

ABSTRACT:
A technique for acquiring and accessing information from a medical implantable device. Analog waveforms of interest are sensed and processed by signal acquisition circuitry. Analog parameters of interest are applied to selector switches which are controlled by a logic circuit. The logic circuit is also coupled to an A/D converter for converting the analog signals to digital values. The digital values are stored in dedicated registers and are available for telemetry to an external device upon receipt of a request or prompt signal. When a digitized value is accessed and telemetered, the control logic circuit changes the conductive state of the selector switches to apply the corresponding analog signal to the A/D converter. The resulting digital value is applied to the corresponding register to refresh the accessed and telemetered value. The technique permits the external device to request and configure the implanted device to send only digitized values of interest. The technique also makes efficient use of the A/D converter, which consumes energy only as needed to refresh the memory when digital values are accessed and telemetered.

REFERENCES:
patent: 5265602 (1993-11-01), Anderson et al.
patent: 5300093 (1994-04-01), Koestner et al.
patent: 5350411 (1994-09-01), Ryan et al.
patent: 5354319 (1994-10-01), Wyborny et al.
patent: 5383912 (1995-01-01), Cox et al.
patent: 5480415 (1996-01-01), Cox et al.

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