Robotic device winds its own way through beating pig heart

WASHINGTON (AP) — Scientists have created a small robotic device that guides itself safely through a beating pig’s heart, demonstrating what such tools might one day do in surgery.
And they borrowed some tricks from animals to do the job. To find its way to a specific point in the heart, the thin tube called a catheter gently tapped its path along heart walls and to a valve, much like how cockroaches skitter along walls and rats reach out with their whiskers
Researchers from Boston C