The method 14 wherein {TAIL ~ the tube material} is affixed to itself using sutures to form {HEAD ~ a sewing cuff} 
The method 14 wherein { TAIL ~ the tube material } is affixed to itself using sutures to form { HEAD ~ a sewing cuff }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD