removing a ring from a finger of and injured wrist/hand/finger is one of those important, common ED procedures to prevent the ring trapping oedema distally to it and then causing ischaemic necrosis of the finger.
the longer the ring is left on, the more difficult it can be to remove.
for fingers where the distal part is not severely injured and the ring can be taken off
these techniques preserve the ring
technique 1: make it slippery
if the finger is not too swollen, using glass cleaner such as Windex, or soap and water
technique 2: use elastic or wool to reduce the oedema then spiral it off
can be painful if the finger is injured, so consider using suitable analgesics
wool can be used but perhaps the best in ED is the elastic band of an oxygen mask as shown in the video:
for tungsten carbide rings - crack it with pliers
for all other cases - cut the ring off
this requires a ring cutter device and often some patience if it is a little blunt