TISSUE EXTRACTION DEVICES AND RELATED METHODS

1 . A device to stabilize an opening through an abdominal wall to support a tissue extraction procedure, comprising:

an outer bag including a circumferential wall defining an open end, the open end of the outer bag bring advanced through an opening defined through the abdominal wall of the patient with a remainder of the outer bag being disposed within a peritoneum of the patient;

a peripheral sleeve being disposed through the opening defined through the abdominal wall, a proximal end of the peripheral sleeve being located outside of the patient and defining a continuous circumferential edge, the peripheral sleeve being disposed radially inwardly with respect to the outer bag; and

a rolling ring operably coupled to the continuous circumferential edge of the peripheral sleeve, the rolling ring being configured to be everted to roll the peripheral sleeve about the rolling ring to apply tension to the peripheral sleeve to help stabilize the opening defined through the abdominal wall to facilitate a procedure to dissect a tissue specimen located within a volume defined by the outer bag while the tissue specimen is located within the peritoneum.

2 . The device of claim 1 , wherein the peripheral sleeve defines a plurality of elongate pockets along a surface thereof, each said elongate pocket being configured to receive an elongate element removably therein.

3 . The device of claim 2 , further comprising a plurality of paddles extending through the opening defined through the abdominal wall to help stabilize the opening defined through the abdominal wall to facilitate dissection of the tissue specimen.

4 . The device of claim 3 , further comprising a circumferential frame removably coupled to the plurality of paddles, the circumferential frame being disposed about the opening defined through the abdominal wall outside of the patient, the circumferential frame being configured to apply an outward radial force to the plurality of paddles to help stabilize the opening defined through the abdominal wall.

5 . The device of claim 1 , wherein the rolling ring has a non-circular cross-section.

6 . The device of claim 1 , wherein the rolling ring has an elongated cross-section.

7 . The device of claim 1 , wherein the open end of the outer bag is defined by a peripheral edge, and further wherein the peripheral edge of the outer bag is operably coupled to a stiffening wire.

8 . The device of claim 7 , wherein the stiffening wire is annular, and further wherein the stiffening wire is configured to be compressible to a collapsed configuration during insertion of the outer bag into the patient or the removal of the outer bag from the patient.

9 . The device of claim 7 , wherein the stiffening wire biases the opening of the outer bag into an expanded configuration to facilitate insertion of the tissue specimen into the outer bag.

10 . The device of claim 7 , wherein the stiffening wire is formed from a nickel-titanium alloy, a spring steel, or a polymer.

11 . The device of claim 7 , wherein the stiffening wire is constrained into a flattened configuration during insertion by inserting the stiffening wire into a tubular introducer.

12 . A method of dissecting a tissue specimen inside of a peritoneum of a patient, comprising:

providing the outer bag according to claim 1 ;

introducing the outer bag through the opening defined through the abdominal wall of the patient;

disposing the tissue specimen within a volume defined by the outer bag;

pulling the open end of the outer bag through the opening defined through the abdominal wall of the patient with the remainder of the outer bag being disposed within the peritoneum of the patient;

inserting the peripheral sleeve through the opening defined through the abdominal wall while retaining the proximal end of the peripheral sleeve outside of the patient, the peripheral sleeve being disposed radially inwardly with respect to the outer bag;

coupling the rolling ring to the continuous circumferential edge of the peripheral sleeve;

everting the rolling ring from (i) a first orientation, where the rolling ring engages a first region of a proximal portion of the peripheral sleeve, to (ii) a second orientation, wherein the rolling ring engages a second region of the proximal portion of the peripheral sleeve, the second region being located distally along the peripheral sleeve with respect to the first region;

rolling the peripheral sleeve about the rolling ring to apply tension to the peripheral sleeve to help stabilize the opening defined through the abdominal wall; and

dissecting a tissue specimen while the tissue specimen is located within the peritoneum and within the volume defined by the outer bag; and

removing dissected portions of the tissue specimen from the patient through the opening defined through the abdominal wall.

13 . The method of claim 12 , wherein everting the rolling ring includes rotating at least a portion of the rolling ring about a poloidal direction.

14 . The method of claim 12 , wherein the outer bag is introduced into the patient using an elongate tubular body that removably receives the bag.

15 . The method of claim 12 , further comprising enlarging the opening defined through the abdominal wall to facilitate dissection of the tissue specimen.