{HEAD ~ The energy} is delivered from the source to {TAIL ~ the apparatus} in the lumen and onto the inner walls along the incision line to be sealed 
{ HEAD ~ The energy } is delivered from the source to { TAIL ~ the apparatus } in the lumen and onto the inner walls along the incision line to be sealed
HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH