摘要:
An implantable microstimulator (10) configured to be implanted for tissue stimulation employs a self-contained power source (16) and a bi-directional RF telemetry link (48) for allowing data-containing signals to be sent to and from the implantable microstimulator (10) from at least two external devices (39,40). Further, a separate electromagnetic inductive telemetry link (38) allows data containing signals to be sent to the implantable microstimulator from at least one of the two external devices (39). The RF bidirectional telemetry link (48) allows the microstimulator to inform the patient or clinician regarding the status of the microstimulator device, including the charge level of a power source, and stimulation parameter states. The invention concerns a method for controlling an implantable medical device (10), the device having telemetry circuitry to receive both a first type of telemetry and to receive a second type of telemetry, the method comprising: listening for the first and second telemetry types; monitoring a voltage of a power source (16) within the implantable medical device; and if the voltage falls below a first threshold, discontinuing listening for the first telemetry type while continuing listening for the second telemetry type.
摘要:
A system, comprising: an external device, comprising: first modulation circuitry for producing from first data a first signal modulated with on-off keying (OOK) modulation, wherein the first modulated signal comprises logic '0' bits of a first pulse width and logic '1' bits of a second pulse width different from the first pulse width, wherein each bit further comprises either an ON state with a signal that varies with a first frequency or an OFF state, wherein a transition between adjacent bits in the first signal is marked by a change in the first modulated signal between the ON and OFF states; a coil (34) configured to wirelessly transmit the first modulated signal to the implantable medical device; and an implantable medical device (10), comprising a first telemetry receiver in the implantable medical device for demodulating the first modulated signal to recover the first data.
摘要:
An implantable microstimulator (10) configured to be implanted for tissue stimulation employs a self-contained power source (16) and a bi-directional RF telemetry link (48) for allowing data-containing signals to be sent to and from the implantable microstimulator (10) from at least two external devices (39,40). Further, a separate electromagnetic inductive telemetry link (38) allows data containing signals to be sent to the implantable microstimulator from at least one of the two external devices (39). The implantable microstimulator, comprises: an hermetically-sealed housing (213); a first electrode (22) and a second electrode (24) for stimulating tissue, each electrode external to the hermetically-sealed housing; an antenna (18) within the hermetically-sealed housing; and telemetry circuitry coupled to the antenna for receiving data-containing signals from at least one external device (39,40,60), said telemetry circuitry comprising: a first telemetry receiver for receiving data in accordance with a first telemetry scheme, and a second telemetry receiver for receiving data in accordance with a second telemetry scheme.