
US Patent No: 6,565,560
Number of patents in Portfolio can not be more than 2000
Electrosurgical instrument
Stats
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May 20, 2003
Issued date -
Mar 27, 2000
filing date -
09/462,927
serial no -
Expired
status
Importance
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Abstract
An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft (10), a tissue treatment electrode (12) at one end of the shaft, and removal means, the instrument having an apertured portion (20a) through which matter can be aspirated by the removal means from the region surrounding the tissue treatment electrode. The removal means comprises a channel formed within the instrument shaft (10) and leading from the apertured portion (20a). The channel is provided with agitation means (14) for preventing the build-up of sublimation products within the channel.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,814,044 Apparatus and method for morselating and removing tissue from a patient | 76 | 1995 | |
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| 4,706,667 Electro surgical high frequency cutting instrument | 239 | 1986 | |
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| 5,810,809 Arthroscopic shaver incorporating electrocautery | 181 | 1997 | |
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| 5,735,846 Systems and methods for ablating body tissue using predicted maximum tissue temperature | 138 | 1995 | |
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| 5,776,092 Multifunctional surgical instrument | 96 | 1995 | |
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| 5,527,331 Method for prostatic tissue resection | 162 | 1995 | |
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| 5,904,681 Endoscopic surgical instrument with ability to selectively remove different tissue with mechanical and electrical energy | 74 | 1997 | |
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| 5,411,514 Bendable variable angle rotating shaver | 50 | 1994 | |
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| 5,941,876 Electrosurgical rotating cutting device | 46 | 1997 | |
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| 5,451,223 Electrosurgical instrument | 117 | 1994 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 20, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |