PMA Approved for Magnetic Localization Biopsy Device

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FDA has approved an Endomagnetics Inc. PMA for the Magtrace and Sentimag Magnetic Localization System, a device for guiding lymph node biopsies in patients with breast cancer undergoing mastectomy. The device uses magnetic detection during sentinel lymph node biopsy procedures to identify specific (sentinel) lymph nodes for surgical removal, an agency release says.

 

“Currently, a sentinel lymph node biopsy is performed after injection of radioactive materials and/or blue dye,” FDA says.  “This magnetic system we’re approving today will offer patients undergoing mastectomy an option for their sentinel lymph biopsy procedure that does not require the injection of radioactive materials.”


The system comprises a sensitive magnetic sensing probe and base unit designed to detect small amounts of Magtrace, the magnetic tracer drug that is injected into breast tissue. The Magtrace particles then travel to lymph nodes and become physically trapped in them, according to the agency. The Sentimag probe is then applied to a patient’s skin in areas closest to the tumor site containing the lymph nodes. A surgeon next makes a small incision and removes the node, which is checked by a pathologist for the presence of cancer cells.

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