If you are injured by riding an electric car in the hospital, you need the signature of your family (it may be a consent form for surgery or treatment), and you should follow the following steps:

1. Contact your relatives as soon as possible: As you need your family's signature, you should contact your relatives in time to let them know your situation and arrange for them to come and sign.

2. Understand the significance of family members' signature: Before signing the consent form, family members should understand the significance and risks of various treatment measures in the consent form and obtain relevant information by asking questions from doctors.

3. Confirm the authenticity of family members' signatures: Before signing the consent form, the doctor should identify the signer to ensure that the signer is true and valid and qualified to sign.

4. Signing the consent form: The consent form can be signed when the authenticity of the signature of the family member is confirmed and the family member clearly agrees. In this process, we need to pay attention to the following issues:

1. Protection of rights and interests: It is necessary to clarify the rights and obligations of medical institutions and medical students and protect the legitimate rights and interests of patients and their families.

2. Risk of signing: You need to know the treatment measures, possible risks and adverse reactions in the consent form, and sign after understanding the consent.

3. Safety guarantee: The hospitalized patients may be seriously ill, so attention should be paid to the safety of patients in the process of signing with their families.