| 摘要 |
<p>An endocardial mapping catheter (10) includes an actuator assembly (14) and an elongated hollow support sheath (12) which extends from the actuator assembly (14). A plurality of electrical probes (18 a-h) are slidingly disposed for independent movement through the sheath (12), and each probe (18) is attached to the actuator assembly (14) for individual manipulation. A guide (16) is mounted on the end of the sheath (12) opposite the actuator assembly (14), to radially deploy each electrical probe (18) along a separate favorable trajectory as the probe is manipulated. In operation, the probes (18) are initially retracted into the sheath (12). Once the guide (16) is positioned as desired, all of the probes (18) are individually deployed until they have each made contact with the endocardium of the left ventricle. Timed responses are obtained from the probes (18), and a series of such responses from various guide locations in the left ventricle are recorded to accomplish circumferential endocardial mapping of the heart.</p> |
