a laser for irradiating a region within the target area, wherein {TAIL ~ the vas} deferens in {HEAD ~ that region} is thermally coagulated while remaining enclosed within the scrotal skin; and 
a laser for irradiating a region within the target area , wherein { TAIL ~ the vas } deferens in { HEAD ~ that region } is thermally coagulated while remaining enclosed within the scrotal skin ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH