Boston Scientific Neuromodulation

The present invention relates to a system for delivering neurostimulation to a patient using a plurality of electrodes. The system comprises a stimulation output circuit configured to deliver the neurostimulation to evoke responses from the patient using an evoking configuration defining a stimulation electrode set including electrodes selected from the plurality of electrodes; and a sensing input circuit configured to sense one or more signals including the evoked responses using a recording configuration defining a sensing electrode set including electrodes selected from the plurality of electrodes. The system further comprises a control circuit configured to control the delivery of the neurostimulation using stimulation parameters defining the evoking configuration, to control the sensing of the evoked responses using sensing parameters defining the recording configuration, and to adjust the stimulation parameters and the sensing parameters according to a sequence of evoking-recording parameter sets each including a set of the stimulation parameters determined for controlling the stimulation output circuit to deliver the neurostimulation to evoke a target response and a set of the sensing parameters determined for controlling the sensing input circuit to record the evoked target response.

The present invention relates to a stimulator device, comprising a plurality of electrode nodes, wherein each of the electrode nodes is associated with a different electrode configured to contact a patient's tissue, a DC-blocking capacitor between each of the electrode nodes and its associated electrode, wherein at least one of the electrodes comprises a sensing electrode to receive a voltage from the tissue, wherein each electrode node associated with the at least one sensing electrode comprises a sensing electrode node, sense amplifier circuitry comprising a first input connected to one of the at least one sensing electrodes and a second input, the sense amplifier circuitry further comprising a differential output comprising a first output and a second output, and DC offset compensation circuitry configured to receive the first and second output, and to produce a DC current, wherein a magnitude of the DC current is a function of a difference of voltages at the first and second outputs, wherein the DC current is provided to the first input to adjust a DC voltage at the first input equal to a DC voltage at the second input.

A system for delivering neurostimulation comprises a stimulation output circuit configured to deliver the neurostimulation according to stimulation parameters defining a pattern of neurostimulation pulses and including timers each independently operable to control timing of one or more pulses of the pattern of neurostimulation pulses. The stimulation output circuit sets a minimum step size for adjusting an adjustable parameter of the stimulation parameters. A system for delivering neurostimulation further comprises a control circuit configured to receive a value of the adjustable parameter and to control operation of the stimulation output circuit using the received stimulation parameters. Further, a control circuit is configured to perform parameter dithering when a dithering mode is enabled and the received value of the adjustable parameter is not available with the minimum step size. The parameter dithering performed by delivering neurostimulation pulses including a first number of pulses at a higher value of the adjustable parameter interleaved with a second number of pulses at a lower value of the adjustable parameter periodically at a period being a sum of the first and second numbers of pulses to produce an average value of the adjustable parameter that approximates the received value of the adjustable parameter. The higher value and the lower value are values available with the minimum step size for adjusting the adjustable parameter.

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