In today's Good News, a Jamaican man presses forward with his dream of making an invention he designed at university — a self-sanitizing door handle for use in hospitals — a reality. And in another medical triumph, surgeons in Canada successfully restore a blind man's sight, with help from his tooth.

Catherine Garcia
The Week Digital

Surgeons in China transplanted a genetically modified pig lung into a brain-dead man, where it functioned for nine days, marking a first in xenotransplantation. Researchers said the lung remained viable without triggering an immediate rejection, although it was eventually damaged by antibodies. Experts are excited by the transplant, but caution that it was an early step and many hurdles remain before pig lungs might be used to treat human patients.

Researchers at the Mayo Clinic are using deep brain stimulation techniques to analyze electrical signals and better understand how to help stop seizures. The team is studying how "different parts of the brain respond to different stimulation patterns," aiming to personalize therapeutic stimulation settings for patients with neurological disorders like epilepsy, the medical center said. If seizures are stopped, it will "return control and predictability to our patients' lives," said Mayo Clinic neuroscientist Dr. Jonathon Parker.

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While studying at Jamaica's University of Technology, Rayvon Stewart developed Xermosol, a self-sanitizing door handle. The device, which can kill 99.9% of pathogens, is being hailed as an inventive way to help with infection control in hospitals. It is under provisional patent protection, and Stewart has spent the last seven years working toward bringing it to market. He told The Guardian he's happy to be "challenging the myth that there isn't awesome life-changing technology in the Caribbean."

A Canadian man regained his sight after undergoing surgery involving his tooth. Brent Chapman, who lost his vision 20 years ago, recently had osteo-odonto-keratoprosthesis surgery, a procedure developed in the 1960s for severe corneal blindness. The operation, also called tooth-in-eye surgery, involves placing a plastic cornea-substitute cylinder in a slice of the patient's tooth, growing the tooth-cylinder combination inside the cheek and later implanting it into the eye. Chapman told CNN he is feeling "fantastic."

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