Implantable Heartburn ‘Ring’ Reins in Stomach Acid

URMC is one of just 13 U.S. surgery sites chosen to offer the LINX™ Reflux Management System, a new implantable magnetic “ring” that promises relief to the estimated 25 million American adults who suffer daily heartburn. The device won FDA approval in late March.

Gastroesophogeal reflux disease, or GERD, occurs when the stomach’s acidic juices backflow into the esophagus due to a faulty sphincter that fails to clamp off the backsplash. In some people, the seal is weak, or the sphincter relaxes when it shouldn’t.

The LINX device – a nickel-sized loop of magnetic beads – can be inserted laparoscopically in less than an hour. The beads separate slightly to allow food and drink to pass down through the esophagus, then compress back together, reinforcing weak esophageal muscles and limiting acidic backwash from the stomach. As one of 15 specialized clinical trial sites across the U.S. and Europe, URMC has been implanting the device in study patients since 2009.

“While GERD is rarely life-threatening, its pain can derail patients’ daily routines and, in select cases, frequent reflux can cause Barrett’s esophagus, which carries a low risk for esophageal cancer,” said Jeffrey H. Peters, M.D., Seymour I. Schwartz Professor and chair of the Department of Surgery, who led the device’s clinical trial at URMC. “As the incidence of GERD rises – possibly tied to the mounting international obesity epidemic – efforts to manage the condition have become increasingly important.”

While numerous over-the-counter antacids and prescription drugs have taken aim at alleviating the symptoms, neutralizing the acids, Peters says 20 to 30 percent of heartburn sufferers are dissatisfied with medicine alone.

“This device tackles the root of the problem, working to augment the natural sphincter and restore the barrier between the two organs,” he said. “In the most recent study, 92 percent of participants were free of needing daily heartburn medication two years after implant. What’s more, the device has shown no signs of problems even four or five years out.”

While 1 in 10 Americans may experience heartburn at least once a month , this occasional discomfort often can be managed through simple lifestyle changes, such as quitting smoking, avoiding eating too close to bedtime, wearing looser fitting clothing, exercising portion control, and steering clear of greasy, spicy or acidic foods.

“When we conducted the trial, about one-third of study applicants were eligible for the device,” Peters said. “They had already attempted these lifestyle adjustments andstill needed a more powerful intervention.”

Peters and Thomas Watson, M.D., chief of Thoracic Surgery at URMC, anticipate installing as many as 30 to 40 of the devices in the first year, drawing patients from across New York, Ohio, Massachusetts, and Vermont. The next-nearest device implantation site is the University of Pittsburgh.

Candidates for the device will complete an initial screening followed by pH, motility, and other GI function testing, before being declared eligible. Current procedures require patients to be admitted to the hospital for a day or two, but in the coming years, Peters anticipates offering the implant as an outpatient procedure.

Peters has served as a consultant to the device’s parent company, TORAX Medical, and received nominal compensation for sharing his clinical expertise at meetings over the past three years.

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Kerry Kehoe
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