You can obtain a copy of IEC 60601-1:2012 from the IEC website or from a national standards body.
: This standard applies to medical electrical equipment that is intended to diagnose, monitor, or treat patients. Iec 60606 Pdf
The IEC 60601 series is a set of international standards for the safety and performance of medical electrical equipment. The standards are published by the International Electrotechnical Commission (IEC) and are widely adopted by regulatory authorities and manufacturers around the world. You can obtain a copy of IEC 60601-1:2012