Patent ID: 8152829

Claim:
A dilator comprising: an elongated dilator body having a proximal end, a distal end and at least one lumen longitudinally extending therethrough; a handle mounted at the proximal end of the dilator body; a control button moveably connected to the outside of the handle; a needle extending through the lumen of the dilator body, having a distal end comprising a needle tip section and a proximal end; an arm connecting the control button to the needle, the arm extending through a first slot in a sidewall of the dilator body into a second slot in the handle, wherein a channel is formed between the outside of the dilator body and the handle; and a stopper attached to the channel distal the arm to limit movement of the arm distal the stopper, wherein a position of the stopper relative to the arm is adjustable; wherein distal movement of the control button relative to the handle and dilator body causes the needle to move from a retracted position, wherein the needle tip is disposed within the lumen of the dilator body, to a protruding position, wherein the needle tip protrudes beyond the distal end of the dilator body.