| 摘要 |
<p>A device to be used for reducing the food intake of a patient comprises an elongated band (11) having a flexible, substantially non expansible outer wall (13) and a flexible and expansible inner wall (19) joined to said outer wall (13) to form an expansible closed cavity. The band (11) has such a length that, when its ends (15, 17) are joined to each other, it may form a loop around Esophagus while permitting an upper part of the stomach to be introduced through the opening of the loop. A conduit (21) extends between the cavity and an injection port (23). By injecting fluid through the port (23) the inner wall (19) in the band loop may be inwardly expanded from adjacent to the outer wall (13) to substantially obstruct the opening of the loop. The band (11) further has a wider portion (25) intended to bear against the posterior side of Esophagus. <IMAGE></p> |
