Researchers at Boston Children’s Hospital announced in 2012 that they've successfully completed tests of an inject-able form of oxygen that they hope will be able to keep a human being alive for up to 30 minutes without breathing.
Led by Dr. John Kheir of Boston Children’s Hospital and Harvard Medical School, the team of scientists were able to pack oxygen into micro-particles that are suspended in a kind of injectable foam; the micro-particles are small enough to mix harmlessly with human blood, thereby allowing them to deliver oxygen to the bloodstream without fear of embolism.
“Eventually injectable oxygen could be stored in syringes on every code cart in a hospital, ambulance or transport helicopter to help stabilize patients who are having difficulty breathing,” Dr. Kheir explained.