Abstract: The invention concerns a band not provided with a dilatable portion, characterized in that it comprises different successive separate zones (A, B, C) formed on its entire developed length, while forming a single-piece and single-unit assembly, and its two ends (1a), (1b) are specifically configured to form flexible nesting and position-locking male-female parts by defining a first head zone (A) and a second rear and anchoring zone (B) forming a main tip and integrated into each other, and between said two zones, the ring comprises a third intermediate connecting zone (C) with solid cross-section over the main part of its length, designed to be more specifically pressed on the part of the stomach to be enclosed.

Abstract: The invention relates to the production of a vertical gastric reservoir for the surgical treatment of morbid obesity. The reservoir consists of a clamp having two plates articulated at the lower end thereof and an automatic closing system in the upper part thereof, reinforced with a sealing system. Both plates are provided with two extensions (one at each end of the instrument) on the right-hand edge thereof. Both extensions are provided with two openings that are used to fix the instrument to the stomach wall. Application of the instrument and the technical solution provided are as follows: the substitution of metal staples which are subsequently eliminated in between 15% and 20% of patients and which result in failure of the vertical band gastroplasty operation. The instrument could also be used for producing small gastric reservoirs used for gastric bypass with minor curvature instead of metal staples.