Dr. James Greenwood Jr introduced bipolar coagulation hemostasis in neurosurgery in 1940, replacing the body el with insulated two-point coagulation forceps.

Bulletin for Greenwood Bipolar Coagulation Forceps, circa 1960-1970

MS029 James Greenwood Sr and Jr, MDs papers (Series 2 Box Folder 24) John P. McGovern Historical Collections and Research Center, Houston Academy of Medicine--Texas Medical Center Library