Grooves disposed near {TAIL ~ the distal tip} of the device are angled to open proximally and {HEAD ~ grooves} disposed near the proximal end are angled to open distally 
Grooves disposed near { TAIL ~ the distal tip } of the device are angled to open proximally and { HEAD ~ grooves } disposed near the proximal end are angled to open distally
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH