An article for a living body or a biological sample is provided, the article including a first film and a second film, in which the first film includes an amorphous carbon film in which a proportion of the number of carbon atoms having an sp.sup.2-hybrid orbital to a total number of carbon atoms having an sp.sup.2-hybrid orbital and carbon atoms having an sp.sup.3-hybrid orbital is in a range of 23 to 43 atom % or a titanium-doped amorphous carbon film in which a proportion of the number of titanium atoms to the number of carbon atoms is in a range of 3 to 12 atom %, and the second film includes any one film selected from an amorphous carbon film in which a static contact angle with pure water is 10 or less, a titanium-doped amorphous carbon film in which a proportion of the number of titanium atoms to the number of carbon atoms is less than 3 atom % or greater than 12 atom %, or a titanium-doped amorphous carbon film in which a static contact angle with pure water is 10 or less.

A minimally invasive pre-cardiogenic heart assist device has been developed. A method of increasing myocardial blood flow using a Subclavian Diastolic Augmentation Device (SDAD) includes grafting a subclavian vein to a first synthetic chamber, the first synthetic chamber located inside of a body of the patient; grafting a subclavian artery to a second synthetic chamber, the second synthetic chamber located inside of the body of the patient; and pumping blood from the first synthetic chamber to the second synthetic chamber with a pump located inside of the body of the patient.