Patent ID: 9339599
Filing Date: 2016-05-17
CPC Classification: A61B,A61M

Claim Text:
1. A self-dilating cannula assembly for introduction into a patient's vasculature, comprising: a stylet comprising a distal end; a cannula, comprising: an external concentric stop slideable along the elongate body, the stop including a locking mechanism for holding the stop in place on the elongate body for controlling a degree of insertion of the distal end of the self-dilating cannula into a patient's vasculature; and an obturator, comprising a lumen sized to receive the stylet, wherein the obturator is configured to reduce fluid flow through the fluid-flow lumen during introduction of the cannula into a blood vessel, the obturator sized to slide within the fluid-flow lumen from the proximal end towards the distal end of the fluid-flow lumen, wherein the obturator and stylet are sized to provide an interference fit between the distal end of the stylet and an inside surface of a distal end of the obturator, wherein the interference fit is configured to control an amount of stylet insertion into the obturator.