Abstract: The invention relates to an intra-gastric balloon comprising: at least one bag suitable for being filled, at least partially. With an inflation fluid; and connection means (3) including a self-closing member (21) suitable fear being transpierced by a connection member 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 (23), forming one or more pairs of self-healing membranes (23) suitable for being transpierced in succession by the connection member, each self-healing membrane (23) being mounted in a manner Such as to come to bear against the other self-healing membrane (23) of the pair with a view to forming a leaktight barrier suitable for automatically closing the passage formed through said other self-healing membrane (23) of the pair, once the connection member has been removed. The invention also provides an intra-gastric balloon for treating obesity.

Abstract: The invention relates to 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; connection means (3), mounted on said bag (2) and suitable for receiving a connection member (11) for connection to an inflation fluid source; said intra-gastric balloon being characterized in that the connection means (3) include a chamber (16) designed to be transpierced by said connection member (11) with a view to injecting the inflation fluid into said bag (2), said chamber (16) containing a sealing fluid that is sufficiently viscous and/or thick to guarantee that the connection means (3) are leaktight once the connection member (11) has been removed. The invention also provides an intra-gastric balloon for treating obesity.