Zynex, Inc. designs, manufactures, and markets medical devices for treating chronic and acute pain and for muscle rehabilitation via electrical stimulation. Its product line includes the NexWave, NeuroMove, InWave, E-Wave, and M-Wave devices, as well as private-label electrodes and batteries, and distributed products such as Comfortrac/Saunders, JetStream, LSO Back Braces, knee and wrist braces, and Dynacomp. The company is also developing the Zynex Fluid Monitoring System (CM-1500), Zynex Wireless Fluid Monitoring System (CM-1600), NiCO CO-Oximeter, and HemeOx tHb Oximeter. Founded in 1996 and headquartered in Englewood, Colorado, Zynex sells primarily through a direct sales force in the United States. On December 15, 2025, Zynex, Inc. and its affiliates filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Texas.