| 摘要 |
There is disclosed a device for limiting the amount of electrical charge delivered from an implantable pulse generator to an electrode of an implantable neurostimulation system. The device, connectable between the pulse generator and an electrode, includes a capacitor connected between two depletion mode n-channel MOSFETs with the gate terminals of each of the MOSFETs being connected to opposite terminals of the capacitor, and the source terminals of the MOSFETs being connected to the same terminal of the capacitor as the gate terminal of the other MOSFET. A switch can also be connected in parallel to the capacitor to facilitate the draining of the stored energy stored in the capacitor. Additionally, circuitry can be connected between the two MOSFETs, with the circuitry configured to resonate at a know frequency of electromagnetic interference.
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