US 9,314,595 B2
Central venous access system
John Gurley, Lexington, KY (US)
Filed by John Gurley, Lexington, KY (US)
Filed on Dec. 2, 2010, as Appl. No. 12/958,702.
Claims priority of provisional application 61/266,298, filed on Dec. 3, 2009.
Claims priority of provisional application 61/363,436, filed on Jul. 12, 2010.
Prior Publication US 2011/0295206 A1, Dec. 1, 2011
Int. Cl. A61M 25/00 (2006.01); A61M 25/01 (2006.01); A61B 17/34 (2006.01); A61M 25/06 (2006.01); A61M 29/00 (2006.01)
CPC A61M 25/0194 (2013.01) [A61B 17/3415 (2013.01); A61B 17/3478 (2013.01); A61M 25/065 (2013.01); A61M 29/00 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A catheter system for use in accessing a patient's central venous system at a location near the neck, said patient having an exterior exit target location on the exterior of the patient, proximate said neck and having an inferior vena cava having a vena cava wall, a right atrium, a superior vena cava having a vena cava wall and an azygos vein having an azygos vein ostium opening into the vena cava, the inferior vena cava and right atrium joined at a junction, said catheter system comprising:
a straight guide catheter work station having a working lumen, a distal end and a proximal end, said distal end adapted to be lodged between said junction of the inferior vena cava and right atrium, said distal end spanning the distance to said vena cava wall of the superior vena cava proximate the azygos vein ostium and said distal end biased against the wall of the superior vena cava when spanning said distance;
a dilation stylet, having a working lumen, placed in said work station working lumen;
a needle wire directional guide catheter having a working lumen and a distal tip adapted for placement in said dilation stylet working lumen, rotatable and advanceable to aim said needle wire directional guide catheter distal tip toward said exterior exit target location;
a needle wire having a tissue piercing tip for advancement through said needle wire directional guide catheter to create an extra vascular tissue track extending to said exterior exit target location, from the location within the body.