Selwa Hussain, one of two people in England that has to carry this special backpack everywhere she goes.
There is this woman in England who carries her 'heart' in her backpack
http://www.dailymail.co.uk/news/article-5223593/Britains-woman-carry-heart-backpack.html
Cue Nirvana's box shaped heart.
The tubes connect to air actuators in her heart cavity, pumping blood around.
If it breaks or fails in any way, she has 90 seconds to get to her backup machine.