Johns Hopkins University researchers are designing new high-tech medical tools to equip the operating room of the future.

A snakelike robot could enable surgeons, operating in the narrow throat region, to make incisions and tie sutures with greater dexterity and precision.

Another robot, the steady-hand, may curb a surgeon’s natural tremor and allow the doctor to inject drugs into tiny blood vessels in the eye, dissolving clots that can damage vision.