US Patent No: 6,113,594
Number of patents in Portfolio can not be more than 2000
Systems, methods and apparatus for performing resection/ablation in a conductive medium
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Sep 5, 2000
Issued date -
Jul 2, 1996
filing date -
08/678,412
serial no -
In Force
status
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Abstract
The invention provides methods, systems and apparatus for electrosurgically treating tissue particularly within the uterus and prostate. In an exemplary method, a surgical instrument comprising an elongate shaft having a proximal end and a distal end, an active electrode near the distal end, and a return electrode is introduced into the uterus. An electrically conductive fluid is then introduced into the uterus to distend the uterus and to form an electrically conductive path between the active electrode and the return electrode. The active electrode is then contacted against tissue within the body cavity. Current is passed between the active electrode and the return electrode while the active electrode is contacting the tissue. The active electrode is provided with a surface area which is selected to produce a power density sufficient to resect or coagulate tissue. The active electrode is then moved along and through the tissue to remove, coagulate or vaporize the tissue.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,998,933 Thermal angioplasty catheter and method | 434 | 1988 | |
| 5,178,620 Thermal dilatation catheter and method | 328 | 1991 | |
| 5,366,443 Method and apparatus for advancing catheters through occluded body lumens | 349 | 1992 | |
| 5,419,767 Methods and apparatus for advancing catheters through severely occluded body lumens | 274 | 1993 | |
| 5,681,282 Methods and apparatus for ablation of luminal tissues | 455 | 1995 | |
| 5,697,909 Methods and apparatus for surgical cutting | 449 | 1995 | |
| 5,697,281 System and method for electrosurgical cutting and ablation | 407 | 1995 | |
| 5,683,366 System and method for electrosurgical tissue canalization | 422 | 1995 | |
| 5,697,882 System and method for electrosurgical cutting and ablation | 492 | 1995 | |
| 5,697,536 System and method for electrosurgical cutting and ablation | 405 | 1996 | |
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| 4,802,476 Electro-surgical instrument | 90 | 1987 | |
| 4,976,711 Ablation catheter with selectively deployable electrodes | 516 | 1989 | |
| 4,905,691 Polypectome snare with bipolar electrodes | 83 | 1989 | |
| 5,035,696 Electrosurgical instrument for conducting endoscopic retrograde sphincterotomy | 383 | 1990 | |
| 5,013,312 Bipolar scalpel for harvesting internal mammary artery | 273 | 1990 | |
| 5,282,799 Bipolar electrosurgical scalpel with paired loop electrodes | 320 | 1991 | |
| 5,250,047 Bipolar laparoscopic instrument with replaceable electrode tip assembly | 234 | 1991 | |
| 5,197,964 Bipolar instrument utilizing one stationary electrode and one movable electrode | 343 | 1991 | |
| 5,192,280 Pivoting multiple loop bipolar cutting device | 226 | 1991 | |
| 5,201,732 Bipolar sphincterotomy utilizing side-by-side parallel wires | 120 | 1992 | |
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| 4,314,559 Nonstick conductive coating | 140 | 1979 | |
| 4,333,467 Nonstick conductive coating | 32 | 1979 | |
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| 4,481,057 Cutting device and method of manufacture | 49 | 1981 | |
| 5,318,564 Bipolar surgical snare and methods of use | 189 | 1992 | |
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| 5,080,660 Electrosurgical electrode | 450 | 1990 | |
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| 4,545,375 Electrosurgical instrument | 127 | 1983 | |
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| 4,228,800 Bipolar electrosurgical knife | 260 | 1978 | |
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| 4,936,842 Electrosurgical probe apparatus | 100 | 1989 | |
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| 4,657,016 Electrosurgical handpiece for blades, needles and forceps | 216 | 1985 | |
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| 5,035,969 Electrophotographic photoreceptor containing phthalocyanine | 2 | 1990 | |
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| 4,622,966 Surgical cutting device | 45 | 1984 | |
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| 5,571,100 Electrosurgical apparatus | 301 | 1994 | |
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| 5,456,689 Method and device for tissue resection | 133 | 1993 | |
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| 4,943,290 Electrolyte purging electrode tip | 370 | 1989 | |
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| 4,785,807 Electrosurgical knife | 136 | 1987 | |
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| 5,685,877 Mutiple tool laparoscopic surgical instrument | 22 | 1995 | |
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| 4,534,347 Microwave coagulating scalpel | 77 | 1983 | |
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| 4,998,527 Endoscopic abdominal, urological, and gynecological tissue removing device | 124 | 1990 | |
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| 5,356,408 Bipolar electrosurgical scissors having nonlinear blades | 258 | 1993 | |
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| 5,603,332 Method and apparatus for monitoring the systemic absorption of irrigation fluid during operative hysteroscopy | 7 | 1995 | |
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| 4,493,320 Bipolar electrocautery surgical snare | 189 | 1982 | |
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| 5,395,363 Diathermy coagulation and ablation apparatus and method | 157 | 1993 | |
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| 4,492,231 Non-sticking electrocautery system and forceps | 459 | 1982 | |
| 4,589,411 Electrosurgical spark-gap cutting blade | 50 | 1985 | |
| 5,417,697 Polyp retrieval assembly with cauterization loop and suction web | 152 | 1994 | |