Electrode for radiofrequency tissue ablation
First Claim
1. An electrode for an electro-surgical operation device, comprising:
- a hollow electrode formed in a hollow tube shape extending from a closed tip;
a first non-insulation area formed to a predetermined length from the closed tip;
a first insulation area formed on an outside surface of the hollow electrode beginning at the predetermined length from the closed tip;
a refrigerant tube, having a smaller diameter than a diameter of the hollow electrode, inserted into the hollow electrode, the refrigerant tube configured to supply refrigerants into the hollow electrode resulting to cool a living tissue in contact with the closed tip and/or the hollow electrode, and further configured to externally discharge heat-exchanged refrigerants from the living tissue through a gap between the refrigerant tube and the hollow electrode;
at least one first hole formed on the outside surface of the first non-insulation area;
the first hole operable to externally discharge a portion of the refrigerants supplied through the refrigerant tube into the living tissue in contact with the closed tip and/or the hollow electrode; and
a flow control mechanism formed on the outside surface of the first non-insulation area, and operable to act as a discharge resistance to the refrigerants discharged from the first hole, so as to control a flow of the refrigerants.
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Accused Products
Abstract
The present invention discloses an electrode for an electric operation device including a hollow electrode being formed in a hollow tube shape extended long from a closed tip, and having an insulation-coating on the outside surface except a predetermined length of the closed tip side, a refrigerant tube having a smaller diameter than a diameter of the hollow electrode, and being inserted into the hollow electrode, the refrigerant tube supplying refrigerants for cooling a living tissue contacting the closed tip and the hollow electrode into the hollow electrode, and externally discharging the heat-exchanged refrigerants from the living tissue through the gap between the refrigerant tube and the hollow electrode, at least one first hole formed on the outside surface of the hollow electrode where the insulation coating has not been formed, for externally discharging some of the refrigerants supplied through the refrigerant tube from the hollow electrode, and a flow control means formed on the outside surface of the hollow electrode where the insulation coating has not been formed, and operated as a discharge resistance to the refrigerants discharged from the first hole, for controlling a flow of the refrigerants, whereby supplying an electrode structure using both a method for water-cooling the inside of the electrode and a method for discharging the saline solution.
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Citations
28 Claims
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1. An electrode for an electro-surgical operation device, comprising:
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a hollow electrode formed in a hollow tube shape extending from a closed tip;
a first non-insulation area formed to a predetermined length from the closed tip;
a first insulation area formed on an outside surface of the hollow electrode beginning at the predetermined length from the closed tip;
a refrigerant tube, having a smaller diameter than a diameter of the hollow electrode, inserted into the hollow electrode, the refrigerant tube configured to supply refrigerants into the hollow electrode resulting to cool a living tissue in contact with the closed tip and/or the hollow electrode, and further configured to externally discharge heat-exchanged refrigerants from the living tissue through a gap between the refrigerant tube and the hollow electrode;
at least one first hole formed on the outside surface of the first non-insulation area;
the first hole operable to externally discharge a portion of the refrigerants supplied through the refrigerant tube into the living tissue in contact with the closed tip and/or the hollow electrode; and
a flow control mechanism formed on the outside surface of the first non-insulation area, and operable to act as a discharge resistance to the refrigerants discharged from the first hole, so as to control a flow of the refrigerants. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 15, 16, 17, 24)
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2. (canceled)
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10. (canceled)
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11. (canceled)
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12. (canceled)
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13. (canceled)
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14. (canceled)
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18. (canceled)
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19. (canceled)
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20. (canceled)
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21. An electrode for an electro-surgical operation device, comprising:
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a hollow electrode formed in a hollow tube shape extending from a closed tip;
a first non-insulation area formed to a predetermined length from the closed tip;
a first insulation area formed on an outside surface of the hollow electrode beginning at the predetermined length from the closed tip;
a refrigerant tube, having a smaller diameter than a diameter of the hollow electrode, inserted into the hollow electrode, the refrigerant tube configured to supply refrigerants into the hollow electrode resulting to cool a living tissue in contact with the closed tip and/or the hollow electrode, and further configured to externally discharge heat-exchanged refrigerants from the living tissue through a gap between the refrigerant tube and the hollow electrode; and
a refrigerant discharging mechanism formed in the first non-insulation area, operable to externally discharge a portion of the refrigerants supplied through the refrigerant tube into the living tissue in contact with the closed tip and/or the hollow electrode. - View Dependent Claims (22, 23, 25)
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26. A method for an electro-surgical operation comprising:
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inserting an ablation device including at least one electrode into a wanted region in a living body; and
proceeding a radio-frequency ablation at the wanted region, when relatively much refrigerant is supplied from the outside into the electrode so as to cool a living tissue in contact with the electrode and relatively little refrigerant discharges into the living tissue. - View Dependent Claims (27, 28)
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Specification