This gastric ring comprises two ends (11, 12) and, between these ends, an intermediateportion (13) of solid cross section intended to simply bear on a part of the stomachthat is to be surrounded. The first end (11) forms an opening (115) into which thesecond end (12) can be introduced. The second end (12) is able to be immobilizedin this opening (115) in at least two different positions, thus making it possibleto adapt the internal diameter (d’) of the ring to its implantationconditions.
