Systems and methods for monitoring neurostimulation dosing

摘要

Various implantable device embodiments may comprise a neural stimulator configured to deliver a neurostimulation therapy with stimulation ON times and stimulation OFF times where a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time. The neural stimulator may be configured to monitor the dose of the delivered neurostimulation therapy against dosing parameters. The neural stimulator may be configured to declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy, or may be configured to record data for the monitored dose of the delivered neurostimulation therapy, or may be configured to both record data fir the monitored dose of the delivered neurostimulation therapy and declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy.

主权项

1. An implantable medical device, comprising:
a neural stimulator configured to deliver a neurostimulation therapy with a neural stimulation pulse frequency, wherein a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time, wherein the neural stimulator includes a clock with an oscillator, a hardware state machine operationally connected to the clock to provide pulse timing control signals, and pulse circuitry configured to receive the timing control signals and deliver neurostimulation pulses with a pulse frequency controlled using the timing control signals, the pulse circuitry including a frequency output limiter configured to avoid excessive charge delivery, wherein the frequency output limiter is configured to block a pulse from being issued only for a limited period of time after a preceding pulse, and thereby allow a subsequent pulse after the limited period of time.