The Leistungspflicht of a medical contract is a kind of obligation de moyens, so the positive breaches of it cannot be judged by the result of performance, rather by the process of the performance.

• 医疗服务合同的给付义务属手段义务,对其不完全履行,无法从结果上判断,只能从过程上判断,此过程中债务人违反附随义务,同时构成对给付义务的不完全履行。