Spinal cord stimulator system

摘要

Spinal cord stimulation (SCS) system having a recharging system with self alignment, a system for mapping current fields using a completely wireless system, multiple independent electrode stimulation outsource, and IPG control through software on Smartphone/mobile device and tablet hardware during trial and permanent implants. SCS system can include multiple electrodes, multiple, independently programmable, stimulation channels within an implantable pulse generator (IPG) providing concurrent, but unique stimulation fields. SCS system can include a replenishable power source, rechargeable using transcutaneous power transmissions between antenna coil pairs. An external charger unit, having its own rechargeable battery, can charge the IPG replenishable power source. A real-time clock can provide an auto-run schedule for daily stimulation. A bi-directional telemetry link informs the patient or clinician the status of the system, including the state of charge of the IPG battery. Other processing circuitry in current IPG allows electrode impedance measurements to be made.

主权项

1. An implantable pulse generator comprising:
a casing having an epoxy header; a circuit board housed in the casing comprising:
a microcontroller;a single application specific integrated circuit (ASIC) in communication with the microcontroller, the single ASIC having a combined analog and digital sections, wherein the analog section further comprises at least one pair of digital to analog converters (DAC) wherein one of the pair is a positive current DAC and the other of the pair is a negative current DAC, and wherein the ASIC generates stimulation signals;a plurality of output capacitors;a power management chip in electrical communication with the microcontroller; andsupport circuitry; an implantable grade lithium ion rechargeable battery housed in the casing and in electrical communication with the circuit board; a charging coil in electrical communication with the rechargeable battery; a RF antenna housed in the epoxy header; a lead contact system housed in the epoxy header wherein the lead contact system provides connection for up to thirty-two leads; a feedthrough having a plurality of pins that interface on one side with the circuit board and interface on the other side with the lead contact system and the RF antenna; a wireless interface wherein the wireless interface is configured to operate in the 402 MHz to 405 MHz range utilizing up to 10 channels for telemetry enabling interoperability.