| 摘要 |
A medical device having enhanced steerability for navigation through a patient's vasculature and for positioning the device for performing a medical procedure, such as pulmonary vein isolation. The device generally includes an elongate body, a balloon defining a proximal neck that is affixed to the distal end of the elongate body such that the neck and elongate body are coterminous, a shaft disposed at least partially within the elongate body and at least partially within the balloon, and a pull wire affixed to a distal portion of the shaft, such that pulling the pull wire will cause deflection of the balloon at a point that is immediately distal of the proximal neck of the balloon. Further, the shape of the balloon when deflected and when in a neutral configuration may be substantially the same. |
| 主权项 |
1. A medical device comprising:
an expandable element defining a proximal portion, a distal portion, and a lumen; an elongate body defining a proximal portion, a distal portion, and a lumen therebetween, the expandable element being affixed to at least a portion of the distal portion of the elongate body; a shaft disposed at least partially within the lumen of the expandable element and defining a proximal portion, a distal portion, and a longitudinal axis; and a pull wire having a continuous diameter, the pull wire being attached to the distal portion of the shaft at an attachment point that is within the distal portion of the expandable element, a pull force exerted on the pull wire deflecting the expandable element at a deflection point that is proximal of the balloon lumen.
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