Thus, the present device not only prevents blood loss but also insures against {HEAD ~ the possibility} of {TAIL ~ an air embolism} 
Thus , the present device not only prevents blood loss but also insures against { HEAD ~ the possibility } of { TAIL ~ an air embolism }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL