Patent ID: 8506527

Claim:
A method of supplying a flush/lock solution to a catheter assembly comprising the following steps: providing a syringe assembly including a body defining a first fluid reservoir and a fluid outlet, the first fluid reservoir containing a first fluid, a plunger assembly including a plunger rod and a plunger, a second fluid reservoir defined within the plunger containing a second fluid, and a piercing member positioned within the second fluid reservoir for piercing the plunger, the piercing member being supported on a distal end of the plunger rod; securing a distal end of the syringe assembly to the catheter assembly; advancing the plunger rod within the body until the plunger bottoms out on a distal wall of the body to eject the first fluid in the first fluid reservoir from the fluid outlet; and after the plunger bottoms out on the distal wall of the body, advancing the plunger rod further within the body to advance the piercing member to pierce the plunger to eject the second fluid in the second fluid reservoir from the fluid outlet.