| 摘要 |
<p>A catheter (20) having an elongate shaft (21) including a proximal and a distal end. The shaft (21) includes a conductor (22). An electrode (23) is disposed at the distal end of the shaft (21) and is connected to the conductor (22). The electrode (23) has a generally annular, cross-sectional shape. The annular shape defines an opening within the electrode. An insulator (26) surrounds the conductor (22). In accordance with the method of the present invention, a crater wound (12) can be formed through the endocardium and into the myocardium of a patient's heart (10). Collateral damage to the myocardium can be made by infusing pressurized fluid into the crater wound (12).</p> |
