hen Thomas Shaw gets worked up, he twists in his chair and kneads his hand. Or he paces about in his tube socks grumbling, “They’re trying to destroy us,” and “The whole thing is a giant scam.” And Shaw, the founder of a medical device maker called Retractable Technologies, spends a lot of time being agitated.
One of the topics that gets him most riled up these days is bloodstream infections. And with good reason—while most people rarely think about them, these are the most dangerous of the hospital-acquired bugs that afflict one in ten patients in the United States. Their spread has helped to make contact with our health care system the fifth leading cause of death in this country.
A few years ago, Shaw, an engineer by training, decided he wanted to do something to help solve this problem and quickly homed in on the mechanics of needle-less IV catheters. Rather than using needles to inject drugs into IV systems, most hospitals have moved to a new design, which involves screwing the threaded tip of a needle-less syringe into a specially designed port. The problem is that if the tip brushes against a nurse’s scrubs, or a counter, or the railing of a hospital bed, it can pick up bacteria. And the rugged threaded surface makes it difficult to get rid of the germs once they’re there. Often, the bacteria go straight into the patients’ bloodstream—which explains why, according to some studies, the rate of bloodstream infections is three times higher with needle-less systems than with their needle-based counterparts.