A method and device for treating hernia by implanting at least one collapsible hernia repair patch, such as a planar mesh body at least partially enveloped by one or more elastic collars. A posterior end of an applicator carrying the repair patch may be inserted through a hernia and into the wall of the abdominal cavity, and the patch may be released into the cavity, e.g., so as to helically deploy the patch such that the patch lies in parallel to the abdominal wall. A balloon, which is removably attached to the patch, may be inflated to help move the patch to a deployed configuration, and thereafter the balloon removed from the hernia site.
