{HEAD ~ A distal tip} of the lead body is continuously deflectable upon {TAIL ~ advancement} and withdrawal of a stylet through the lumen at the distal portion to access a selected branch of the coronary sinus 
is continuously deflectable upon
{ HEAD ~ A distal tip } of the lead body is continuously deflectable upon { TAIL ~ advancement } and withdrawal of a stylet through the lumen at the distal portion to access a selected branch of the coronary sinus
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH