Abstract: Techniques are described that allow an implantable device to sense activity data from a patient and estimate the patient's amount of energy expended based on the sensed data. The implantable device may alternatively determine an amount of time the patient has been active based on the activity data. For example, the implantable device may be an implantable gastric stimulator. A system may provide feedback to the patient, a family member, or a doctor about the patient's activity or energy expenditure. The data may be provided in table or graphical format, and may show daily or weekly energy data or may show a trend of the daily or weekly energy data.

Abstract: Techniques are described that allow an implantable device to sense gastric data and activity data from a patient, and estimate the patient's amount of energy consumed and energy expended based on the sensed data. A system provides feedback to the patient, a family member, or a doctor about the patient's energy consumed, energy expended, and net energy. The data may be provided in table or graphical format, and may show daily or weekly energy balance data or may show a trend of the daily or weekly energy data. The patient may receive feedback by an implanted alert module that provides and audio alert or a vibration alert. In addition, data acquired by the system may be used to adjust the patient's stimulation therapy parameters.

Abstract: A connector system for an implantable lead, which includes a header having a lumen for receiving the implantable lead. The lumen defines a mating surface and has an internal diameter larger than the lead to be connected therein. A collar is slidably engageable with the lead. Part of the collar is slidable into the header lumen, and part of the collar is releasably securable to the header such that the lead is retained in the lumen. The part of the collar that is slidable into the header lumen may be tapered. The tapered part of the collar and/or the mating surface may be formed of a compressible material.