Closing openings in anatomical tissue

A medical system for closing one or more openings in tissue, each of the one or more openings leading to an anatomical cavity, the medical system comprising:

• a device sized for passage through a first opening of the one or more openings into the anatomical cavity, the device comprising:
• a constricting unit arranged to be delivered within the anatomical cavity at a position proximate to an interior tissue surface within the anatomical cavity, the constricting unit postionable within the anatomical cavity to constrict at least a portion of an opening of the one or more openings located on the interior tissue surface within the anatomical cavity;
• and
• an occluding member arranged to be delivered into the anatomical cavity at a position between the constricting unit and the interior tissue surface within the anatomical cavity, the occluding member blocking the constricted portion of the opening of the one or more openings located on the interior tissue surface within the anatomical cavity.

A medical system for closing one or more openings, each of the one or more openings leading to an anatomical cavity, the medical system comprising:

• a device sized for passage through a first opening of the one or more openings into the anatomical cavity, wherein the device comprises:
• a closure unit arranged to be inserted into the anatomical cavity at a position at least proximate to an interior tissue surface within the anatomical cavity, the closure unit further arranged to close an opening of the one or more openings located on the interior tissue surface within the anatomical cavity;
• and
• an intermediate member arranged to be inserted into the anatomical cavity at a position between the closure unit and the interior tissue surface within the anatomical cavity, wherein the closure unit comprises at least one piercing element, each of the at least one piercing element arranged to pierce through the intermediate member into the interior tissue surface within the anatomical cavity.