Electrosurgical system
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United States of America Patent
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Jun 5, 2001
Issued Date -
N/A
app pub date -
Apr 21, 1999
filing date -
Oct 15, 1997
priority date (Note) -
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Abstract
An electrosurgical system is disclosed that applies electrical energy to obtain a predetermined surgical effect, while also reducing eschar deposits on a working surface of an electrosurgical instrument, producing an eschar deposit which is easily removed from the working surface and/or facilitating removal of eschar deposits during a cleaning procedure. Such benefits may be realized by providing a negative bias on the working surface relative to a return path to source during electrosurgical procedures and/or during a cleaning procedure which may include contacting the working surface with an electrically conductive liquid. To reduce smoke generation at a surgical site, the electrosurgical instrument may comprise a metal body having an outer insulating layer to reduce thermal/electrical discharge from non-functional portions of the instrument. An insulating layer having a thermal conductance of about 1.2 W/cm.sup.2.degree. K and a dielectric withstand strength of at least about 50 volts may be employed. Such insulating layer may advantageously comprise silicon and/or carbon. The metal body may be provided to have a thermal conductivity of at least about 0.35 W/cm.degree. K, and may advantageously comprise a metal selected from the group: gold, silver, aluminum, and copper. Heat sink means may be included in various embodiments to establish a thermal gradient away from functional portions of the instrument (i.e., by removing heat from the metal body).
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MICROLINE SURGICAL, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Brassell, James L | Boulder, CO | 18 | 3709 |
Heim, Warren P | Boulder, CO | 41 | 5602 |
Olichney, Michael D | Boulder, CO | 8 | 4180 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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