主权项 |
1. A catheter system for crossing into the Left heart from the Right heart comprising:
a. A first inner catheter, having a first working lumen, and having a first proximal end and having a first distal end; b. A second outer catheter having a second working lumen sized to accept said inner catheter, and having a second distal end and having a second proximal end; c. A first catheter coupler on said first inner catheter; d. A second catheter coupler on said second outer catheter, adapted for mating engagement with said first inner catheter coupler to allow the pair of catheters to be moved together as a single unit; e. A first handle coupled to said first proximal end, having a thumb actuated lever to advance a piercing needle out of the first distal end of said first catheter into a deployed state; f. A spring located within said first handle adapted to bias said piecing needle in a retracted state; g. An electrical connector located in said first handle electrically connect to said piercing needle; |