Comfort splint to immobilize an injured finger and promote healing. Acu-Life's Finger Injury System helps relieve the pain and swelling caused by: sprains, strains, jams, arthritis. This system is designed to treat finger injuries in two stages: Stage 1: Cold therapy to relieve pain and reduce swelling. Stage 2: Immobilize the injured finger with a comfort splint. The Finger Gel Pack can also be warmed to provide targeted relief for arthritic fingers.