Many risky and unproven treatments are first trialed in these cases. The artificial heart is one example.<p><a href="http:&#x2F;&#x2F;www.reuters.com&#x2F;article&#x2F;2015&#x2F;10&#x2F;14&#x2F;us-carmat-patient-idUSKCN0S82GP20151014" rel="nofollow">http:&#x2F;&#x2F;www.reuters.com&#x2F;article&#x2F;2015&#x2F;10&#x2F;14&#x2F;us-carmat-patient-...</a>