Get the Whitepaper called Killed by Code: Software Transparency in Implantable Medical Devices.
You can download it from the following link: https://packetstormsecurity.com/files/download/92177/transparent-medical-devices.pdf
Source: https://packetstormsecurity.com/files/92177/Killed-By-Code-Software-Transparency-In-Implantable-Medical-Devices.html