Radiofrequency medical instrument and methods for luminal welding
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Feb 17, 1999
filing date -
Feb 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus are provided for welding or sealing vessels or organs by collapsing and elongating a vessel with a jaw-like structure, and then applying an RF current between first and second bi-polar electrodes to weld the approximated vessel walls together. The jaw-structure is configured to progressively collapse the section of tissue to squeeze fluids out of the lumen of the vessel. The device also may include one or more sensors providing signals to a power controller that modulates application of RF energy to the vessel based on power, temperature or tissue impedance.
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