Radiofrequency medical instrument and methods for luminal weldin

Details Radiofrequency medical instrument and methods for luminal weldin Radiofrequency medical instrument and methods for luminal weldin

1999-02-17

2000-10-17

Cohen, Lee

Surgery

Instruments

Electrical application

606 38, 606 40, A61B 1814

Patent

active

061324299

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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