Patent ID: 8961409
Filing Date: 2015-02-24
Classification: A61B

Abstract:
1. A surgical access assembly for accessing a cavity of a patient, comprising: a proximal frame member configured for positioning adjacent an external surface of tissue, the proximal frame member defining a proximal opening therethrough and having first and second frame portions, at least one of the first and second frame portions movable with respect to the other between a contracted condition, wherein the proximal opening of the proximal frame member defines a first length, and an expanded condition, wherein the proximal opening of the proximal frame member defines a second length greater than the first length; a distal frame member configured for positioning adjacent an internal surface of tissue, the distal frame member defining a distal opening therethrough; and a membrane extending between the proximal frame member and the distal frame member, the membrane having a first end defining a loop at least partially enclosing the proximal frame member and a second end engaged to the distal frame member, at least the loop of the membrane having excess material defining one of a pleated or crumpled configuration when the proximal frame member is in the contracted condition, wherein the excess material of at least the loop accommodates expansive movement of the proximal frame member upon movement thereof to the expanded condition.