Patent ID: 8414596

Claim:
A surgical instrument for removal of material from a patient, the surgical instrument comprising: a. a handle assembly; b. an introducer tube, wherein the introducer tube is sized for insertion through a trocar, wherein the introducer tube comprises a proximal end and a distal end, wherein the proximal end of the introducer tube is in communication with the handle assembly; and c. a retrieval bag, wherein the retrieval bag is positionable at the distal end of the introducer tube, wherein the retrieval bag has an open end and a closed end, wherein the open end is configured to transition between a first open position and a second closed position, wherein the retrieval bag defines a bag length extending from the open end to the closed end, the retrieval bag further comprising a plurality of folds extending along at least part of the bag length when the open end is in the first open position and when the open end is in the second closed position, wherein the plurality of folds are comprised of a resilient material and are configured to provide the retrieval bag with an inverted configuration and an everted configuration, the everted configuration providing a volume capacity in the retrieval bag that is greater than a volume capacity of the bag in the inverted configuration.