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