Helical coil apparatus for ablation of tissue
First Claim
1. A medical procedure comprising:
- providing a medical device comprising first and second helical coils configured to engage bodily tissue, the first and second helical coils comprising at least one opening for delivery of a conductive fluid to a tissue treatment site, the first and second helical coils wound parallel to one another, the first and second helical coils configured to apply electric current to bodily tissue, the first helical coil serving as a first electrode of a bipolar electrode configuration and the second helical coil serving as the second electrode of the bipolar electrode configuration;
maneuvering the first and second helical coils into contact with tissue;
delivering the conductive fluid to the tissue; and
applying electric current to the tissue.
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Accused Products
Abstract
A surgical apparatus for delivering a conductive fluid to a target site for subsequent formation of a virtual electrode to ablate bodily tissue at the target site by applying a current to the delivered conductive fluid. The surgical apparatus includes an elongated device forming a helical needle. The helical needle is configured to engage bodily tissue and is hollow for delivering conductive fluid from a fluid source. Finally, the helical needle terminates in a needle tip. In one preferred embodiment, an electrode is associated with the helical needle for applying a current to conductive fluid delivered from the helical needle. During use, following delivery of conductive fluid, the electrode applies a current to the delivered conductive fluid for creating a virtual electrode. The virtual electrode ablates bodily tissue contacted by the conductive fluid.
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Citations
23 Claims
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1. A medical procedure comprising:
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providing a medical device comprising first and second helical coils configured to engage bodily tissue, the first and second helical coils comprising at least one opening for delivery of a conductive fluid to a tissue treatment site, the first and second helical coils wound parallel to one another, the first and second helical coils configured to apply electric current to bodily tissue, the first helical coil serving as a first electrode of a bipolar electrode configuration and the second helical coil serving as the second electrode of the bipolar electrode configuration;
maneuvering the first and second helical coils into contact with tissue;
delivering the conductive fluid to the tissue; and
applying electric current to the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical procedure comprising:
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providing a medical device comprising first and second helical coils configured to engage bodily tissue, the first and second helical coils comprising at least one opening for delivery of a conductive fluid to a tissue treatment site, the second helical coil concentrically disposed within the first helical coil, the first and second helical coils configured to apply electric current to bodily tissue, the first helical coil serving as a first electrode of a bipolar electrode configuration and the second helical coil serving as the second electrode of the bipolar electrode configuration;
maneuvering the first and second helical coils into contact with tissue;
delivering the conductive fluid to the tissue; and
applying electric current to the tissue. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification