| 摘要 |
A guiding catheter, including a specialized guiding catheter referred to as a guiding sheath, has a uniquely curved three-dimensional distal end portion. This distal end portion has a two-dimensional turn of less than a full circle, which turn includes both an incomplete turn section and a distal extension thereof which is an end section. The turn lies in three dimensions and, when viewed in a direction which moves distally along the curve, curves upwardly and downwardly and again upwardly, each out of the plane within which the rest of the catheter lies. The guiding catheter or sheath is especially useful for guiding an electrophysiology catheter for facilitating ablation within the right atrium and/or ablation within the left atrium, such as by way of a transsceptal procedure.
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