CHKD surgeons use vacuum bell device to treat pectus excavatum

Published on November 22, 2012 at 5:13 AM · No Comments

Surgeons at Children's Hospital of The King's Daughters (CHKD) have fitted a patient with a device that might eliminate the need for surgery in some patients with one of the world's most common chest deformities, pectus excavatum, often called sunken chest syndrome.

Known as the vacuum bell, it works much like devices in body shops that use sustained vacuum to pop out a dent.

"Years from now, we may look at the surgeries and realize that many of these conditions could have been corrected with vacuum devices," said Dr. Robert J. Obermeyer, who is leading the project at CHKD, the nation's top research center for chest-wall deformities and a training site for surgeons from around the world.

Pectus excavatum is the most common congenital deformity of the chest wall. Caused by an overgrowth of cartilage in the ribs and sternum, its defining feature is a depression, or indentation, in the middle of the chest.

Until the 1980s, the only correction was a radical surgery that involved removing cartilage and ribs. In the late 1980s, Dr. Donald Nuss, a CHKD pediatric surgeon, developed a minimally invasive technique that involved placing a concave bar into the chest then flipping it over so that it pushes the depression of the chest upward. The Nuss Procedure has since become the surgical gold standard.

Today, CHKD performs more pectus excavatum surgeries than any facility in the United States and remains a major training site for surgeons and a center for research on chest wall deformities.

But even the minimally invasive surgery results in an average hospital stay of five days. Pectus specialists have been exploring less invasive techniques; research is being conducted in San Francisco on implanting magnets in the chest wall that are attracted to a chest brace.

The vacuum bell procedure marks the first use by pectus specialists of a non-surgical device. "CHKD has always made efforts to minimize surgical intervention and I believe this could eliminate the need for surgery in some pectus excavatum patients," said Dr. Obermeyer, who has been instrumental in bringing the technology to the U.S.

The vacuum bell device looks something like a large, silicone doughnut, with a bulb attached to remove air pressure. It must be fitted to each patient and fit snugly on the chest. The bulb is used to create a vacuum inside the device.

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