Intra-gastric balloon with double-membrane valve and corresponding kit for setting same

An intra-gastric balloon designed to be implanted inside the stomach of a patient for the purpose of reducing the volume of the stomach by way of treatment for obesity, said intra-gastric balloon (1) comprising:

• at least one bag (2) suitable for being filled, at least partially, with an inflation fluid;
• and
• connection means (3), mounted on said bag (2) and including a self-closing member (21) suitable for being transpierced by a connection member (11) for connection to a inflation fluid source;
• said intra-gastric balloon being characterized in that the self-closing member (21) comprises at least two superposed self-healing membranes (22, 23), forming one or more pairs of self-healing membranes (22, 23) suitable for being transpierced in succession by the connection member (11), each self-healing membrane (22, 23) being mounted in a manner such as to come to bear against the other self-healing membrane (22, 23) of the pair with a view to forming a leaktight barrier suitable for automatically closing the passage (24) formed through said other self-healing membrane (22, 23) of the pair, once the connection member (11) has been removed.