EP0480639A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrode assembly for high-frequency heating and coagulating apparatus
Assignee: Individual
•
Filing: 1991-10-04
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Granted: —
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Expires: 2011-10-04
Abstract
Abstract An electrode assembly suitable for use in an apparatus for heating and coagulating a living tissue by a high-frequency current, comprises a planar electrode (3) having a terminal (5), which is connected to a high-frequency power supply, and a working face (3) in the form of a flat or convex surface, and a hollow cooling chamber (4) for cooling the working face from the back side thereof, said planar electrode and hollow cooling chamber being formed integrally with each other.
Inventors
- 👤 Shiro Yamada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2018/00005; A61B2018/00011; A61B2018/00023
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
An electrode assembly for a high-frequency heating and coagulating apparatus, comprising a planar electrode having a terminal, which is connected to a high-frequency power supply, and a working face in the form of a flat or convex surface, and a hollow cooling chamber for cooling the working face from the back side thereof, said planar electrode and hollow cooling chamber being formed integrally with each other.
Claim 2
Dependent Claim
29 words
An electrode assembly as claimed in claim 1 for the high-frequency heating and coagulating apparatus, wherein the form of the planar electrode is circular, semicircular, crescent, oval or polygonal.
Claim 3
Dependent Claim
74 words
An electrode assembly as claimed in one of claims 1 and 2 for the high-frequency heating and coagulating apparatus, wherein the cooling chamber is formed in such a manner that an annular cooling surface, which has been provided so as to surround the periphery of the working face of the planar electrode, is cooled from the back side thereof at the same time as the cooling of the working face of the planar electrode.
Claim 4
Dependent Claim
83 words
An electrode assembly as claimed in one of claims 1 through 3 for the high-frequency heating and coagulating apparatus, wherein the planar electrode and hollow cooling chamber are made up integrally of an electrically conductive material and a peripheral portion of the planar electrode is coated annularly with an electrical insulating material having good thermal conductivity so that the coated portion and the region inside the coated portion function as an annular cooling surface and a working face of the planar electrode, respectively.
Claim 5
Dependent Claim
81 words
An electrode assembly as claimed in one of claims 1 through 4 for the high-frequency heating and coagulating apparatus, wherein the planar electrode and hollow cooling chamber are formed integrally by a curved tube made of an electrically conductive material, an oval working face is formed in a convex surface of the tube, and the remaining portion of the tube is applied with a coating film of an electrical insulating material having good thermal conductivity to serve as a cooling surface.
Claim 6
Dependent Claim
90 words
An electrode assembly as claimed in one of claims 1 through 3 for the high-frequency heating and coagulating apparatus, wherein the hollow cooling chamber is made up of an electrical insulating material having good thermal conductivity so as to have a bottom surface greater than a planar electrode, and the planar electrode is fitted in the bottom surface of the hollow cooling chamber at the substantial centre thereof, whereby a portion of the bottom surface, which is outside the periphery of the electrode, is taken as an annular cooling surface.
Claim 7
Dependent Claim
37 words
An electrode assembly as claimed in one of claims 1 through 6 for the high-frequency heating and coagulating apparatus, wherein the hollow cooling chamber is provided with an inlet port and an outlet port for a coolant.
References Cited (Backward Citations)
No citation records indexed.
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