Tissue retrieval device with bladders

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, wherein the introducer tube includes an aperture proximally spaced from the distal end of the introducer tube, wherein the introducer tube further includes one or more indentations formed at the distal end of the introducer tube;
• c. a retrieval bag, wherein the retrieval bag is positionable at the distal end of the introducer tube, wherein the retrieval bag has an inflatable portion, wherein the retrieval bag is configured to receive a tissue specimen;
• d. an actuator rod slidably disposed in the introducer tube;
• and
• e. a distal plug at the distal end of the actuator rod, wherein the distal plug includes a resilient tab, wherein the actuator rod is translatable from a proximal position to a distal position to push the distal plug distally and thereby deploy the retrieval bag from the introducer tube;
• wherein the aperture of the introducer tube is configured to engage and receive the resilient tab of the distal plug to restrict proximal movement of the distal plug when the actuator rod reaches the distal position
• wherein the one or more indentations of the introducer tube are configured to restrict distal movement of the distal plug when the actuator rod reaches the distal position.