Wound retractor

摘要

A retraction device for retracting an incision in a body wall includes a sheath that traverses through the incision from outside the body to a body cavity inside the body. The retraction device may include a deployable, adjustable frame that supports the sheath and that, together with the sheath, retracts the incision. The retraction device may include an outer ring and an inner ring coupled to opposing ends of the sheath and further include means to place the sheath in tension between the inner and outer rings, thereby retracting the incision.

主权项

1. A retraction device for retracting an incision in a body wall, the retraction device comprising:
a distal continuous ring; a first half ring; a second half ring; a first hinge coupling the distal ring, the first half ring and the second half ring together; a second hinge coupling the distal ring, the first half ring and the second half ring together, the first and second hinges being positioned along a common axis and substantially opposite each other on the circumference of the distal ring; a circumferential, elastomeric sheath coupled between the distal ring and the first and second half rings; a first, neutral condition in which the first half ring is positioned on a first side of the axis, proximal the distal ring, and the second half ring is positioned on a second, opposite side of the axis proximal the distal ring; and a second, tensioned condition in which the first half ring is rotated about the first and second hinges in a first direction to a position on the second side of the axis and proximal the distal ring, thereby placing the portion of the sheath that is coupled between the distal ring and the first half ring in tension, and the second half ring is rotated about the first and second hinges in a second, opposite direction to a position on the first side of the axis and proximal the distal ring, thereby placing the portion of the sheath that is coupled between the distal ring and the second half ring in tension.