A collection bag for better isolating and removing a large mass of tissue from a female patients abdominal cavity during a laparoscopic surgery includes: (a) a flexible and resilient ring that has a configuration adapted to: (i) enable it to be distorted so that it can be vaginally inserted into the patients abdominal cavity and then quickly return to essentially the same shape that it took prior to being deformed, (ii) size the rings open area so that the large tissue mass can pass though it, and (iii) be further distorted so that it can be removed from the abdominal cavity through a laparoscopic-surgery-appropriate incision in the wall of the abdominal cavity, and (b) a sleeve having a flexible wall, an open end, and a defined interior volume, and wherein the sleeves open end is affixed to the ring, and its interior volume is sized to allow the excised tissue to reside and be isolated within the bags sleeve.
