Patent ID: 7979127

Claim:
A retaining device for attaching to a digestive organ having a cavity surrounded by a wall, the wall having an outside surface and an inside surface, the retaining device comprising: an anchor configured to extend along and engage the outside surface of the wall of the digestive organ; an elongate portion coupled to the anchor wherein the elongate portion is configured to extend through the wall of the digestive organ and into the cavity of the organ, the elongate portion comprising a tapered portion that tapers from a wider portion so as to be aligned with the inside surface of the wall when the anchor engages the outside surface to a narrower portion located adjacent the anchor with the narrower portion being narrower than the wider portion so that contractions of the wall urge the anchor against the outside surface of the wall; and an electrode located on the elongate portion, wherein the elongate portion and anchor in combination are configured to maintain the electrode in electrical contact with the wall of the digestive organ.