Tissue retractors

1. A surgical retractor device, comprising:

a surgical port having an elongate shaft configured to be inserted through a body wall and extend into a body cavity;

a flexible fabric configured to support tissue; and

at least one grasping element coupled to a perimeter of the flexible fabric and configured to be manipulated to couple the flexible fabric to the elongate shaft of the surgical port, and configured to move the flexible fabric and thereby move the tissue, wherein

the at least one grasping element has a shape such that when a longitudinal axis of the at least one grasping element is oriented substantially parallel to a longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element and the surgical port can become uncoupled,

the at least one grasping element has a shape such that when a longitudinal axis of the at least one grasping element is oriented at a non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element anchors to the surgical port, thereby securing the flexible fabric to the surgical port in a fixed position, and

when the longitudinal axis of the at least one grasping element is oriented substantially parallel to the longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element can slide along the elongate shaft and can slide off a distal end of the elongate shaft to become uncoupled from the surgical port, and when the longitudinal axis of the at least one grasping element is oriented at the non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element cannot slide along the elongate shaft.

2. The device of claim 1 wherein the surgical port comprises a trocar.

3. The device of claim 1 , wherein the flexible fabric is configured to be inserted into the body cavity through the surgical port.

4. The device of claim 1 , wherein the surgical port is configured to be capable of receiving an instrument when the at least one grasping elements is coupled to the surgical port.

5. The device of claim 1 , further comprising at least one string coupled to the fabric and configured to be manipulated to position tissue in a substantially fixed position with respect to the fabric.

6. The device of claim 5 , wherein the string is located in the perimeter of the flexible fabric surrounding an internal area of the flexible fabric.

7. The device of claim 1 , wherein the at least one grasping element comprises one of an elliptical-shaped grommet, a tab, a fabric loop, a clip, a wraparound tie, a hook, a magnetic clasp, and a clamp.

8. The device of claim 1 , wherein the surgical port comprises a hand assisted laparoscopic surgery port.

9. The device of claim 1 , wherein the flexible fabric is configured to be rolled such that the flexible fabric can be inserted as a roll into the body cavity through the surgical port inserted through the body wall.

10. The device of claim 1 , further comprising a deployment member coupled to the flexible fabric.

11. The device of claim 10 , wherein the deployment member is coupled to a mid-portion of the flexible fabric.

12. The device of claim 1 , wherein the at least one grasping element comprises a plurality of grasping elements located symmetrically around the perimeter of the flexible fabric.

13. The device of claim 1 , wherein an internal area of the flexible fabric is formed of a more flexible material than a material forming the perimeter of the flexible fabric.

14. The device of claim 1 , wherein the elongate shaft of the surgical port includes at least one locking element configured to engage the at least one grasping element and secure the flexible fabric to the surgical port in the fixed position when the longitudinal axis of the at least one grasping element is oriented at the non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port.

15. The device of claim 14 , wherein the at least one locking element comprises one of a hook, a magnet, a loop, a tie, and a protrusion.

16. The device of claim 1 , wherein the at least one grasping element has an elliptical shape, and the elongate shaft of the surgical port has a cylindrical shape.

17. A surgical retractor device, comprising:

a surgical port having an elongate shaft configured to be inserted through a body wall and extend into a body cavity;

a flexible fabric configured to support tissue; and

at least one grasping element coupled to a perimeter of the flexible fabric and configured to be manipulated to couple the flexible fabric to the elongate shaft of the surgical port, and configured to move the flexible fabric and thereby move the tissue, wherein

the at least one grasping element has a shape such that when a longitudinal axis of the at least one grasping element is oriented substantially parallel to a longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element and the surgical port can become uncoupled,

the at least one grasping element has a shape such that when a longitudinal axis of the at least one grasping element is oriented at a non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port, the at least one grasping element anchors to the surgical port, thereby securing the flexible fabric to the surgical port in a fixed position,

the elongate shaft of the surgical port includes at least one locking element configured to engage the at least one grasping element and secure the flexible fabric to the surgical port in the fixed position when the longitudinal axis of the at least one grasping element is oriented at the non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port, and

the at least one locking element comprises a plurality of grooves formed in the elongate shaft of the surgical port, the at least one grasping element being configured to slide along the elongate shaft when the longitudinal axis of the at least one grasping element is oriented at the non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port, and being configured to engage a selected one of the grooves when the longitudinal axis of the at least one grasping element is oriented at the non-parallel and non-perpendicular angle to the longitudinal axis of the elongate shaft of the surgical port to secure the flexible fabric to the surgical port in the fixed position.

18. The device of claim 17 , wherein

the perimeter of the flexible fabric is made from a less flexible material than an internal area of the flexible fabric surrounded by the perimeter.