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US 2015/0305810 A1Published application
Microwave based electrosurgical coagulating knife
AssigneeAngioDynamics, Inc.
InventorsKevin McElwee, Jeffrey Model
Life of this patent
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Abstract
A microwave based electrosurgical coagulating knife capable of simultaneous or near simultaneous cauterization and dissection of tissue to prevent unwanted or dangerous blood loss during tissue removal.
Claims23
An electrosurgical coagulating knife comprising:
- a blade for cutting tissue;
- a microwave antenna positioned near the blade and adapted to transmit microwave signal to coagulate the tissue.
A combination electrosurgical coagulating and resecting knife comprising:
- a blade for cutting tissue;
- a coagulation sensor positioned near the blade for sensing the impedance of the tissue;
- a microwave antenna positioned near the blade and adapted to transmit a microwave signal to coagulate the tissue so as to allow the blade to cut the tissue without bleeding;
- and
- a processor adapted to receive signals from the coagulation sensor and determine whether sufficient coagulation has taken place based on the received signals.
2 more elements
A method for performing resection of tissue comprising:
- placing a combination electrosurgical coagulating and resecting knife near a tissue to be cut, the knife having a blade for cutting the tissue, and a microwave antenna positioned near the blade and adapted to transmit a microwave signal;
- after the knife has been placed near the tissue, transmitting a microwave signal to the microwave antenna to coagulate the tissue to be cut;
- cutting the tissue by the blade when the tissue has been coagulated.
Dependencies are inferred from the claim text.