Extension Set With a Patency Instrument

A method to provide access to a patient's vascular system, comprising:

• coupling an extension set to a catheter assembly, wherein the extension set comprises:
• a tube, comprising a distal end, a proximal end, a lumen extending between the distal end and the proximal end, and an outer surface;
• a distal connector coupled to the distal end of the tube;
• a proximal connector coupled to the proximal end of the tube;
• a patency instrument disposed within the tube;
• a translation handle coupled to the outer surface of the tube, wherein the translation handle is configured to move along the outer surface of the tube between a proximal position and a distal position to translate the distal end of the patency instrument between a retracted position and an advanced position, wherein in response to the distal end of the patency instrument being in the advanced position, the distal end of the patency instrument extends beyond the distal end of the tube;
• and
• a fluidic channel configured to allow for a flow of fluid through the extension set, the fluidic channel isolated from a non-fluidic channel defined by at least a portion of the lumen, so that fluid is prevented from entering the non-fluidic channel;
• wherein coupling the extension set to the catheter assembly comprises coupling the distal end of the tube to the catheter assembly;
• and
• moving the translation handle along the tube from a proximal position to a distal position, wherein in response to the translation handle moving to the distal position, the distal end of the patency instrument extends beyond the distal end of the tube into the catheter assembly.

An extension set, comprising

• a tube, comprising a distal end, a proximal end, a lumen extending between the distal end and the proximal end, and an outer surface;
• a distal connector coupled to the distal end of the tube;
• a proximal connector coupled to the proximal end of the tube;
• a patency instrument disposed within the tube;
• a translation handle coupled to the outer surface of the tube, wherein the translation handle is configured to move along the outer surface of the tube between a proximal position and a distal position to translate the distal end of the patency instrument between a retracted position and an advanced position, wherein in response to the distal end of the patency instrument being in the advanced position, the distal end of the patency instrument extends beyond the distal end of the tube;
• and
• a fluid path formed within a wall of the tube, such that a portion of the wall defines the fluid path, with the fluid path formed arranged in parallel to the lumen and being fluidically isolated from the lumen by the wall.