{TAIL ~ The vacuum} anchors {HEAD ~ the surrounding tissue} and mediates against the “tenting” of tissue during electrode penetration 
{ TAIL ~ The vacuum } anchors { HEAD ~ the surrounding tissue } and mediates against the “ tenting ” of tissue during electrode penetration
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH