(1) Prior to implementing medical treatment, in particular an intervention into the body or health, the treating party is obliged to obtain consent from the patient. If the patient is unable to consent, the consent of a party authorised to do so is to be obtained unless a living will in accordance with section 1901a (1) sentence 1 permits or prohibits the measure. More extensive requirements with regard to consent ensuing from other provisions remain unaffected. If it is impossible to obtain consent to a measure that cannot be delayed in good time, it may be implemented without consent if this is in line with the putative intent of the patient.
(2) The effectiveness of the consent is contingent on the patient, or, in the case governed by subsection (1) sentence 2, on the party entitled to give consent, having been informed in accordance with section 630e (1) to (4) prior to giving consent.
(3) Consent may be revoked at any time, without having to comply with requirements as to its form, and without stating reasons.