MICROWAVE BASED ELECTROSURGICAL COAGULATING KNIFE
First Claim
Patent Images
1. 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.
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Accused Products
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.
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Citations
23 Claims
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1. An electrosurgical coagulating knife comprising:
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a blade for cutting tissue; a microwave antenna positioned near the blade and adapted to transmit microwave signal to coagulate the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A combination electrosurgical coagulating and resecting knife comprising:
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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.
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13. A method for performing resection of tissue comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification