An improved version of a neurostimulator device for treating gastroparesis has been approved by the Food and Drug Administration, according to the manufacturer.
In a Jan. 23 press release, Medtronic said that the FDA had approved a new version of the Enterra neurostimulator device, which has been available since 2000. It was approved as a treatment for chronic, intractable (drug refractory) nausea and vomiting associated with gastroparesis related to diabetes or of idiopathic etiology in patients aged 18-70 years, under a Humanitarian Device Exemption.
The programmable device – a battery-powered neurostimulator implanted under the skin in the lower abdominal region – “uses mild electrical pulses to stimulate the antrum portion of the stomach muscle wall,” which “may reduce the symptoms of nausea and the number of vomiting episodes related to gastroparesis,” according to the Medtronic website. The improvements of the new version – the Enterra II system – include new programming software and an indicator that alerts the clinician and patient when the device needs to be replaced; the battery lasts from 5 to 10 years. In addition, it does not have a magnetic activation switch, so it is more compatible with electromagnetic interference, according to the website.
A humanitarian use device “is a device that is intended to benefit patients by treating or diagnosing a disease or condition that affects or is manifested in fewer than 4,000 individuals in the United States per year,” according to the FDA. For approval, the company submits a humanitarian device exemption application, which does not require submission of effectiveness data, but “must contain sufficient information for the FDA to determine that the device does not pose an unreasonable or significant risk of illness or injury, and that the probable benefit to health outweighs the risk of injury or illness from its use, taking into account the probable risks and benefits of currently available devices or alternative forms of treatment.”
The Medtronic release points out that use of the gastric electrical stimulation therapy at a medical center requires approval from the center’s Institutional Review Board.
