Surgery – Instruments – Electrical application
Reexamination Certificate
2006-12-28
2010-10-26
Dvorak, Linda C (Department: 3739)
Surgery
Instruments
Electrical application
Reexamination Certificate
active
07819870
ABSTRACT:
System and methods are disclosed for tissue contact and thermal assessment, e.g. for tissue ablation procedures. An exemplary brush electrode comprises a plurality of flexible filaments adapted to transfer electrical energy to a tissue. At least one piezoelectric sensor is embedded among the plurality of flexible filaments. The at least one piezoelectric sensor is responsive to contact stress of the flexible filaments by generating electrical signals corresponding to the amount of contact stress. An output device is electrically connected to the at least one piezoelectric sensor. The output device receives the electrical signal for assessing tissue contact by the flexible filaments. The brush electrode may further comprise a sensing device mounted adjacent the at least one piezoelectric sensor, wherein the sensing device is a pressure sensor, a thermistor, a thermocouple, or an ultrasound sensor.
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Cao Hong
Paul Saurav
Thao Chou
Dvorak Linda C
Lee Benjamin
St. Jude Medical, Atrial Fibrillation Division, Inc.
Trenner Law Firm LLC
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