Patent Document ID: 7489965
Application ID: 10957930
Patent Flag: 1

Claim One:
1. A device for applying a desired current to a tissue membrane, said device comprising: an input lead adapted to be electrically connected to the tissue membrane to provide a sensed signal indicative of voltage across the membrane; an input circuit that includes an analog-to-digital converter, and is responsive to said sensed signal and provides a digitized signal indicative of said sensed signal; a digital signal processor operable in a voltage clamp mode, a current clamp mode and a dynamic clamp mode, said processor executes selected program instructions to operate in a selected one of said (i) a voltage clamp mode, (ii) a current clamp mode or (iii) a dynamic clamp mode based upon the state of a mode selection signal indicative of the selected operating mode, wherein said digital signal processor provides a digital current command signal indicative of the current to be applied to the tissue membrane; an output circuit that receives said digital current command signal, and generates a current signal indicative thereof; and an output lead adapted to be electrically connected to the tissue membrane, which receives and applies said current signal to said tissue membrane.