US 11,052,249 B2
Neuromuscular stimulation using multistage current driver circuit
Nikunj Arunkumar Bhagat, New York, NY (US); and Jose Luis Contreras-Vidal, Houston, TX (US)
Filed by Nikunj Arunkumar Bhagat, New York, NY (US); and Jose Luis Contreras-Vidal, Houston, TX (US)
Filed on Nov. 21, 2018, as Appl. No. 16/198,760.
Claims priority of provisional application 62/589,237, filed on Nov. 21, 2017.
Prior Publication US 2020/0155841 A1, May 21, 2020
Int. Cl. H03K 3/26 (2006.01); A61N 1/36 (2006.01); A61N 1/04 (2006.01); A61N 1/02 (2006.01)
CPC A61N 1/36003 (2013.01) [A61N 1/025 (2013.01); A61N 1/0452 (2013.01); A61N 1/0456 (2013.01); A61N 1/3603 (2017.08); H03K 3/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A neuromuscular electrical stimulator, comprising:
a waveform generator having a symmetrical and symmetrical output;
a bidirectional voltage controlled current source having an output voltage less than 100 volts;
a bidirectional current mirror circuit connected to an output of the bidirectional voltage controlled current source,
wherein a current output by the bidirectional current mirror circuit has a same value and a higher voltage as a current output by the bidirectional voltage controlled current source;
a unity gain current buffer connected to the output of the bidirectional voltage controlled current source and an input to the bidirectional current mirror circuit; and
a biological interface, wherein the biological interface includes at least a working electrode and a return electrode to deliver the current output by the bidirectional current mirror circuit.