| 摘要 |
<p>Apparatus for providing electrical stimulation of the gastrointestinal tract in absence of normal peristaltic contractions. An implantable pulse generator is coupled to the gastric system through one or more medical electrical leads. The leads should couple to the circular layer of the stomach. The apparatus comprises sensors for sensing gastric electrical activity, and in particular, whether peristaltic contractions are occurring. A first sensor low frequency gastrointestinal electrical activity between the frequency of 0.0017-0.25 Hz and a second sensor senses intrinsic gastrointestinal electrical activity between the frequency of 100-300 Hz, which occurs upon normal peristaltic contractions. The second sensor only senses for a preset period after low frequency gastrointestinal electrical activity has been sensed by the first sensor. The pulse generator delivers stimulation pulse trains to the gastrointestinal tract at a period of time after low frequency gastrointestinal electrical activity has been sensed by the first sensor. If however, the second sensor senses intrinsic gastrointestinal electrical activity between the frequency of 100-300 Hz, then the delivery of stimulation pulse trains to the gastrointestinal tract is inhibited.</p> |
