Meredith Cohn - It looks like a rolling suitcase, a mask and some tubes, but for some people who can’t breathe properly, the device will mean freedom.

Those with damaged lungs who are waiting for a transplant, too sick for surgery or just temporarily injured normally have to stay hooked up to bulky machinery in a hospital to stay alive. But a new invention, developed by engineers and doctors from the University of Maryland, means they could soon return home and go about more of their lives.

“Grandpa can come [along] now,” said Dr. Bartley P. Griffith, a professor of transplant surgery in the university’s School of Medicine, about the artificial lung support device he helped create and commercialize before it was bought by Johnson & Johnson.