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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0802195 (1997-02-14) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 198 인용 특허 : 241 |
A tissue ablation apparatus includes a delivery catheter with distal and proximal ends. A handle is attached to the proximal end of the delivery catheter. At least partially positioned in the delivery catheter is an electrode deployment device. The electrode deployment devices includes a plurality o
A tissue ablation apparatus includes a delivery catheter with distal and proximal ends. A handle is attached to the proximal end of the delivery catheter. At least partially positioned in the delivery catheter is an electrode deployment device. The electrode deployment devices includes a plurality of retractable electrodes. Each electrode has a non-deployed state when it is positioned in the delivery catheter. Additionally, each electrode has a distended deployed state when it is advanced out of the delivery catheter distal end. The deployed electrodes define an ablation volume. Each deployed electrode has a first section with a first radius of curvature. The first section is located near the distal end of the delivery catheter. A second section of the deployed electrode extends beyond the first section, ad has a second radius of curvature, or a substantially linear geometry.
[ What is claimed is:] [1.] A tissue ablation apparatus, comprising:an introducer having a distal portion and a proximal portion;an electrode device positionable within an interior of the introducer as the introducer is advanced through tissue, the electrode device including at least a first RF elec
[ What is claimed is:] [1.] A tissue ablation apparatus, comprising:an introducer having a distal portion and a proximal portion;an electrode device positionable within an interior of the introducer as the introducer is advanced through tissue, the electrode device including at least a first RF electrode, a second RF electrode and a third RF electrode, each of the first, second and third RF electrodes having a tissue piercing distal end, a non-deployed state when positioned within the introducer and a deployed state when advanced from the distal portion of the introducer, the first, second and third RF electrodes being deployable with curvature from the introducer distal portion and including a section that is perpendicular to a longitudinal axis of the introducer, the first, second and third RF electrodes exhibiting a changing direction of travel along a length of each electrode deployed from the introducer;an electrode advancement and retraction member coupled to the electrode device to advance the first, second and third RF electrodes in and out of the introducer distal portion.
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