Properitoneal mechanical retraction apparatus and methods of...

A - Human Necessities – 61 – B

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A61B 17/02 (2006.01) A61B 1/32 (2006.01) A61B 17/00 (2006.01) A61B 17/22 (2006.01) A61B 17/32 (2006.01) A61B 17/34 (2006.01) A61B 19/00 (2006.01) A61B 17/30 (2006.01) A61B 19/02 (2006.01)

Patent

CA 2109795

A fan retractor (100) has a pair of angle-shaped ele- ments (102A, 102B) moveable relative to one another. The angle-shaped elements include first legs (101A, 101B) dis- posed in a generally parallel relationship, and second legs that extend laterally from the first legs, and are adapted for engag- ing with the abdominal wall. The second legs fan out upon ro- tation of the first legs relative to one another and have an ef festive thickness, measured in the direction defined by the first legs, that decreases distally from the first legs. The retractor al- so includes a lifting device (130) that applies a lifting force to the angle-shoped elements. In variations, the second legs have a stiffness that decreases distally from the first legs; the first legs are linked so as to contra-rotate relative to one another; the retractor includes a lifting force indicator (172); and the lifting device unidirectionally applies the lifting force to the angle-shaped elements. The fan retractor is preferably used properitoneally, that is, the second legs of the retractor are in- serted between the properitoneal fat layer and the peritoneum. With this placement of the retractor, the peritoneum provides a drape over the bowel and omentum and prevents the second legs of the retractor from snagging the bowel or the omentum. The fan retractor may additionally be used conventionally with its second legs placed posteriorly relative to the perito- neum.

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