FLEXIBLE CANNULA

A flexible cannula and radially extending conformable flanges used to provide an adjustable effective length of flexible cannula, adjustable for varying tissue depths. At least some of the example embodiments include a flexible tubular body having a length, a flexible distal flange, a flexible proximal flange, and one or more flexible intermediate flanges positioned on the length of the tubular body between the distal and the proximal flanges. All of the flanges may be have the equivalent outer diameters. Each flange may be spaced axially spaced apart from the adjacent flexible flange with varying spacing. Some flanges may also have a circumferential row of perforations, allowing for selective removal of some flanges. The tubular body may also have a ring of perforations, allowing for selective removal of a portion of the tubular body. The flexible cannula may also have at least one suture docking stations on a proximal end of the cannula, to selectively retain a length of suture therein.