Ablation treatment of bone metastases
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United States of America Patent
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Jan 20, 2009
Grant Date -
Sep 1, 2005
app pub date -
Mar 31, 2005
filing date -
Jun 11, 1999
priority date (Note) -
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Abstract
Ablative treatment of metastatic bone tumors and relief of pain associated with metastatic bone tumors is achieved by heat ablation of the bone tumor or tissue near the bone tumor by an ablation probe. In one form the probe is an electrode coupled to a high frequency power supply to provide ablative heating of tissue proximate to an electrode that is placed in or near the bone tumor. Cooling of the electrode by fluid circulation from a cooling apparatus outside the patient's body may be used to enlarge the region of high frequency heating around the electrode. Image guidance of the electrode placement may be monitored by an imaging device. Tracking of the electrode by an image-guided navigator helps in placement of the electrode with respect to the configuration of the bone and bone metastasis. A set of tools accommodates biopsy and various shapes of electrodes according to clinical requirements. Several forms of electrodes, energy delivery and cooling apparatus and methods accommodate the specific objectives.
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