Technology
System components include an implantable pulse generator (gastric stimulator), lead, and device programmer. The gastric stimulator and lead are implanted in a minimally invasive procedure that does not make any changes to the anatomy and, if necessary, can be easily removed. The lead contains a food detection sensor located in a probe (the tip of which is placed across the stomach wall into the stomach cavity). The lead also contains a stimulation electrode attached to the stomach wall. These are shown in the animation at right.
The programmer is used in the physician’s office to monitor the implanted system and modify the therapy settings.
A unique feature of the system is its food detection and activity sensor capabilities. The food detection sensor triggers the abiliti™ system to begin stimulation after detecting an eating event. This stimulation is meant to create an early feeling of fullness that may lead to reduced food intake. In addition, the activity sensor is designed to track exercise and sleeping patterns objectively. The data from the food detection and activity sensors are collected and stored in the pulse generator and periodically downloaded to the device programmer. These data provide physicians and patients with information vital to helping patients achieve and maintain their weight loss goals.