A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. Ensure your child's well-being with our easy-to-use child medical consent form.He or she must sign the blank line labeled "Signature Of Parent Or Legal Guardian" then, on the adjacent line, record the Current "Date" of signing. A minor shall be deemed an adult for the purpose of consenting to: 1. Fill out the form completely. Add any specific health information or wishes that you would want caregivers and medical personnel to know. General Instructions.