Symptoms Wooden thorns stuck in the finger swollen and painful, or even serious infection tetanus bacteria, so the foreign body must be removed. First aid measures 1. Remove the splinter as soon as possible. Grasp the splinter firmly with your finger and take it out slowly, even if it hurts. 2.If the wound is too deep, you can borrow tweezers or needles to pick it out. The tweezers or needle can be disinfected with alcohol and then gently spread the wound to remove the complete splinter. 3.Squeeze out the bruised blood from the wound. The bruised blood from the wound may be toxic. 4.Rinse with clean water. Carefully rinse the wound and the wound perimeter with flowing water to flush out any residual bruises. 5, then scrub with alcohol or iodine for disinfection. After the above rinsing, scrub the wound with alcohol or iodine. 6, if the wound is red and swollen, you can use ice or ice water to cool down the swelling. 7, piercing too deep into the wooden thorn even if removed, but also to the hospital to inject tetanus antitoxin, just in case.