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