Systems and methods treat {TAIL ~ a tissue region} at or near a sphincter by deploying a carrier, which carries {HEAD ~ an electrode} that can be advanced to penetrate tissue 
Systems and methods treat { TAIL ~ a tissue region } at or near a sphincter by deploying a carrier , which carries { HEAD ~ an electrode } that can be advanced to penetrate tissue
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH