Keyboard-controlled microprocessor-based nerve stimulator

Details Keyboard-controlled microprocessor-based nerve stimulator Keyboard-controlled microprocessor-based nerve stimulator

A - Human Necessities

61

N

326/1

A61N 1/36 (2006.01) A61N 1/08 (2006.01)

Patent

CA 1175493

ABSTRACT OF THE DISCLOSURE A keyboard-controlled microprocessor-based tissue stimulator includes pulse output circuits which deliver output pulses at times commanded by, and having amplitudes commanded by, a microprocessor-controller. A microprocessor operates in response to user command on keyboard switches. Commands include a stop command which not only terminates output pulses but resets amplitudes to a safe value so that subsequent restarting will not result in production of uncomfortably high output signal levels. The stop switch is prominently located on the tissue stimulator housing to permit the user to stop operation very quickly in an emergency situation. Keyboard switches are provided for increas- ing and decreasing output amplitude, and the microprocessor- controller responds to those commands by continuously changing output amplitude by predetermined small increments for as long as the switch remains depressed, thus permitting the user to make smooth and precise adjustments for optimum results. A further keyboard switch commands the microprocessor-controller to switch to an alternate mode, for example, a low rate burst mode.

401817

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