| abstract |
A coronary access catheter system simplifies the insertion of objects into distal branches of the coronary sinus (8). The system incorporates a real-time forward-imaging means to view the os (1) and the branches of the coronary sinus (8). Preferably, the catheter (11) uses near-infrared light as the forward-imaging means, but it could also include ultrasound or electromagnetic transducer. As the image is viewed, the catheter tip can be steered into the coronary sinus os (1) and deflected in a tight radius bend on the distal end to navigate the short radius, right angle turns found in the coronary sinus branches (8). At that point, a flexible sheath can be placed over the guide catheter (11) or objects such as guidewires can be inserted into channels of the guide catheter (11). The system consists of a catheter (11) and image acquisition unit, which displays the forward image. |