| 摘要 |
An elongate side port of small circumferential extent is formed in a hollow bore needle of the type used for marking the location of a lesion or a tumor in a breast or soft tissue. A wire carrier housing an elongate flexible marking wire is slideably received within the hollow bore. The needle, wire carrier and wire are inserted into a breast or soft tissue so that the side port is facing a lesion. After position adjustments have been made, if needed, the wire is advanced so that its distal end is deflected through the side port by a radius formed in the distal end of the wire carrier. When extended, it marks the location of the lesion and anchors the wire against migration. If the position of the needle is then understood to be unsatisfactory, the marking wire is withdrawn through the side port and back into the wire carrier and the needle is withdrawn and then re-positioned. When the position is deemed satisfactory, the needle and wire carrier are withdrawn and the physician follows the marking wire to its distal end to remove the lesion.
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