| 摘要 |
<p>A method and an apparatus for marking a region of concern in living body tissue to provide improved surgical guidance during biopsy procedures and to provide preliminary verification of recovery of targeted tissue sample. A self-anchoring marker (114) is deployed in the region of concern by using an indicator wire (70) to urge it through a hollow tube (120) inserted through the skin. The indicator wire (70) also has an anchoring mechanism (72) on its tip and is further fed through the tube (120) after deployment of the marker (114) until it is also anchored in the tissue. The tube (120) is then removed, leaving the indicator wire (70) and the marker (114) in place. Unlike the wire (70), the self-anchoring marker (114) is not subject to displacement by movement of the patient and thus provides an indication of post-insertion displacement of the indicator wire (70). It also provides verification of successful sampling when used in conjunction with medical diagnostic or other sensing devices.</p> |
