US 5,899,931 A · Synchronous telemetry transmission between a programmer and an autonomous device

Abstract

An active implanted medical device, particularly an active implantable medical device, and its external programmer having a bi-directional synchronous transmission of data. The active implanted medical device (10) includes a timing clock (18) and circuits for the emission/reception of signals operating under the temporal control of the timing clock of the active implanted medical device. The programmer (24) includes a timing clock (42) and circuits for the emission/reception of signals, operating under the temporal control of the programmer timing clock. The device (10) and programmer (24) exchange data there-between using a bi-directional synchronous serial connection, in which the programmer timing clock (42) is a programmable clock, adjustable in phase, and the programmer has a synchronization control circuit (32, 36, 38, 40) cooperating with its programmable timing clock, to analyze a signal received from the active implanted medical device and to lock in phase the programmer programmable timing clock on the timing clock of the active implanted medical device.

Claims20

Dependent claims

A system comprising:

an active implanted medical device;
a programmer for said active implanted medical device;
and
a bi-directional synchronous serial connection for signals passing between the active implanted medical device and the programmer;
the active implanted medical device (10) further comprising a timing clock having a frequency (18) and means for emitting a telemetry signal to pass to the programmer and for receiving a telemetry signal passing from the programmer, said means operating under a temporal control of the active implanted medical device timing clock;
the programmer (24) further comprising a programmable timing clock (42) having a frequency that is adjustable in phase, means for emitting a telemetry signal to pass to the active implanted medical device and for receiving a telemetry signal passing from the active implanted medical device, said means operating under the temporal control of the programmer timing clock, a means of synchronization control (32, 36, 38, 40) cooperating with said programmable clock for analyzing a telemetry signal received from the active implanted medical device and to lock in phase the programmable clock on the active implanted medical device timing clock.

3 more elements

A method of telemetry between an active implanted medical device and a programmer comprising:

providing the active implanted medical device with a timing clock having a first frequency;
providing the programmer with a timing clock having a second frequency which is programmable in phase;
transmitting a synchronization signal from said active implanted medical device under the control of the active implanted medical device timing clock;
detecting the synchronization signal at the programmer;
analyzing the detected synchronization signal and determining a difference in phase between said synchronization signal and said second frequency, and
adjusting said programmer programmable clock to lock in phase said programmer programmable clock on said active implantable medical device timing clock.

3 more elements

Dependencies are inferred from the claim text.

Synchronous telemetry transmission between a programmer and an autonomous device

Life of this patent

Synchronous telemetry transmission between a programmer and an autonomous device

Life of this patent

Abstract

Claims20