Patent ID: 8231570
Filing Date: 2012-07-31
Classification: A61B

Abstract:
1. An adjustable access device, comprising: a housing having a cannula extending distally therefrom, the housing and the cannula defining a working channel extending therethrough for receiving instruments; and at least one seal element disposed within the working channel and configured to form at least one of a seal around an instrument disposed through the working channel and a seal across the working channel when no instrument is disposed therethrough; wherein the cannula is movable between an insertion configuration in which the cannula has a substantially constant outer diameter and an opening defining a distal end of the working channel has a first diameter, and an expanded configuration in which the outer diameter of the cannula increases from a proximal end of the cannula to a distal end of the cannula and the opening has a second diameter that is greater than the first diameter, the cannula being folded in the expanded configuration and unfolded in the insertion configuration.