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Electrosurgical device for coagulating and for making incisions, a method of severing blood vessels and a method of coagulating and for making incisions in or severing tissue

Assignee: Lina Medical International Operations AG
•
Filing: 2000-11-17
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Granted: 2004-01-20
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Expires: 2020-11-17
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Abstract

Abstract An electrosurgical device for coagulating and for making incisions in or severing tissue such as blood vessels, the device comprising forceps jaws ( 6, 7 ) for immobilizing a tissue portion to be coagulated and incised, the forceps jaws ( 6, 7 ) being connected to means for applying an electrical tension between said forceps jaws for coagulating the tissue portion, the device further comprising a member ( 22 ) for being displaced between said forceps jaws ( 6, 7 ) to incise a tissue portion held between the forceps jaws and coagulated thereby, the member ( 22 ) being connected to means for applying an electrical voltage to said member for performing an incision in said tissue by means of said electrical voltage applied to said member ( 22 ) the member ( 22 ) preferably being blunt such that the incision substantially exclusively is achieved by means of the voltage applied to the member ( 22 ). For preventing the generation of smoke through charring of the tissue portion, a tube is provided for supplying an electrically non-conductive, cooling liquid to the tissue portion.

Inventors

  • 👤 Niels Kornerup

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 10:26
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B18/1445

Claims Analysis

Total Claims: 84
Claim 1
Independent Claim 99 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one blunt incision means for making incisions in at least part of said tissue portion, and the immobilizing means comprising adjustable spring loading means for applying an adjustable spring load for immobilizing the tissue portion.
Claim 2
Dependent Claim 99 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one blunt incision means for making incisions in at least part of said tissue portion, and the immobilizing means comprising adjustable spring loading means for applying an adjustable spring load for immobilizing the tissue portion.
Claim 3
Dependent Claim 28 words
A device according to claim 1 wherein the spring load is manually adjustable depending on the characteristics of the tissue portion to be immobilized by the immobilizing means.
Claim 4
Dependent Claim 39 words
A device according to claim 1 wherein the immobilizing means comprise first and second moveable forceps jaws and moving means for opening and closing the first and second jaws relative to one another for holding the tissue portion therebetween.
Claim 5
Dependent Claim 32 words
A device according to claim 3 wherein the moving means comprise adjustable spring loading means for applying an adjustable spring load for closing the first and second jaws relative to one another.
Claim 6
Dependent Claim 134 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one second electrical me for applying a second electric power to at least part of said tissue portion for making incisions in said tissue portion at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and the second electrical means is configured such, by being blunt, that the incision or severing is substantially exclusively achieved by means of said second electric power.
Claim 7
Dependent Claim 134 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one second electrical me for applying a second electric power to at least part of said tissue portion for making incisions in said tissue portion at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and the second electrical means is configured such, by being blunt, that the incision or severing is substantially exclusively achieved by means of said second electric power.
Claim 8
Dependent Claim 29 words
A device according to claim 5 wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a combination thereof.
Claim 9
Dependent Claim 35 words
A device according to claim 6 wherein the signal is a DC or AC signal such as a LF, an BF or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 10
Dependent Claim 25 words
A device according to claim 5 wherein the first and second electric powers are obtained by means of substantially identical electric current or voltage signals.
Claim 11
Dependent Claim 41 words
A device according to claim 5 wherein the immobilizing means comprise first and second moveable forceps jaws and moving means for opening and closing the first and second jaws relative to one another for holding and/or clamping the tissue portion therebetween.
Claim 12
Dependent Claim 35 words
A device according to claim 9 wherein the moving means comprise adjustable spring loading means for applying a specific or an adjustable spring load for closing the first and second jaws relative to one another.
Claim 13
Dependent Claim 27 words
A device according to claim 10 wherein the spring load is manually adjustable depending on the characteristics of the tissue portion to be held between said jaws.
Claim 14
Dependent Claim 27 words
A device according to claim 5 and further comprising electrical switching means for applying the first and second electric powers independently of one another and preferably sequentially.
Claim 15
Dependent Claim 134 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one second electrical means for applying a second electric power to at least part of said tissue portion for making incisions in said tissue portion, at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and the second electrical means is configured such, by being blunt, that the incision or severing is substantially exclusively achieved by means of said second electric power.
Claim 16
Dependent Claim 134 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one second electrical means for applying a second electric power to at least part of said tissue portion for making incisions in said tissue portion, at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and the second electrical means is configured such, by being blunt, that the incision or severing is substantially exclusively achieved by means of said second electric power.
Claim 17
Dependent Claim 29 words
A device according to claim 13 wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a combination thereof.
Claim 18
Dependent Claim 35 words
A device according to claim 14 wherein the signal is a DC or AC signal such as a LF, an HF or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 19
Dependent Claim 25 words
A device according to claim 13 wherein the first and second electric powers are obtained by means of substantially identical electric current or voltage signals.
Claim 20
Dependent Claim 41 words
A device according to claim 13 wherein the immobilizing means comprise first and second moveable forceps jaws and moving means for opening and closing the first and second jaws relative to one another for holding and/or clamping the tissue portion therebetween.
Claim 21
Dependent Claim 35 words
A device according to claim 17 wherein the moving means comprise adjustable spring loading means for applying a specific or an adjustable sprig load for closing the first and second jaws relative to one another.
Claim 22
Dependent Claim 27 words
A device according to claim 18 wherein the spring load is manually adjustable depending on the characteristics of the tissue portion to be held between said jaws.
Claim 23
Dependent Claim 27 words
A device according to claim 13 and further comprising electrical switching means for applying the first and second electric powers independently of one another and preferably sequentially.
Claim 24
Dependent Claim 136 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: an elongated tubular member having a proximal and a distal end and a lumen extending therethrough, first and second moveable forceps jaws extending from said distal end, opening and closing means for opening and closing the first and second forceps jaws relative to one another, first electrical means for applying a first electric voltage across the first and second forceps jaws, a blunt electric power application means extending from said distal end and arranged for being improved through a tissue portion held between the first and second forceps jaws, and second electrical means for applying a second electric voltage to the electric power application means relative to the first and/or the second forceps jaws.
Claim 25
Dependent Claim 136 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: an elongated tubular member having a proximal and a distal end and a lumen extending therethrough, first and second moveable forceps jaws extending from said distal end, opening and closing means for opening and closing the first and second forceps jaws relative to one another, first electrical means for applying a first electric voltage across the first and second forceps jaws, a blunt electric power application means extending from said distal end and arranged for being improved through a tissue portion held between the first and second forceps jaws, and second electrical means for applying a second electric voltage to the electric power application means relative to the first and/or the second forceps jaws.
Claim 26
Dependent Claim 19 words
A device according to claim 21 wherein the first electric voltage is substantially equal to the second electric voltage.
Claim 27
Dependent Claim 20 words
A device according to claim 21 and further comprising a handle fixed to said proximal end of the tubular member.
Claim 28
Dependent Claim 37 words
A device according to claim 23 wherein the opening and closing means comprise adjustable spring loading means for applying a specific or an adjustable spring load for closing the first and second jaws relative to one another.
Claim 29
Dependent Claim 25 words
A device according to claim 24 wherein the handle comprises spring load adjusting means for manually adjusting the spring load of the spring loading means.
Claim 30
Dependent Claim 21 words
A device according to claim 23 wherein the handle comprises forceps activating means for manually activating the opening and closing means.
Claim 31
Dependent Claim 28 words
A device according to claim 23 wherein the handle comprises incision activating means for manually activating the movement of the electric power application means through the tissue portion.
Claim 32
Dependent Claim 28 words
A device according to claim 23 wherein the handle comprises switching means for activating the first and second electrical means for applying said first and second electric voltages.
Claim 33
Dependent Claim 52 words
A device according to claim 28 wherein the switching means are adapted to cooperate with the incision activating means such that the first electric voltage is applied in the deactivated condition of said incision activating means while the second electric voltage is applied in the activated condition of said incision activating means.
Claim 34
Dependent Claim 22 words
A device according to claim 21 wherein the blunt electric power application means comprise a plate member having a blunt leading edge.
Claim 35
Dependent Claim 38 words
A device according to claim 30 wherein the plate member except the leading edge portion is electrically insulated from the surroundings such that electric power only may be supplied to the tissue portion through said leading edge portion.
Claim 36
Dependent Claim 34 words
A device according to claim 21 wherein the blunt electric power application means comprise a wire member arranged for being moved through the tissue portion and for supplying electric power to the tissue portion.
Claim 37
Independent Claim 65 words
A method of severing blood vessels, the method comprising the following steps: applying a first electric power to a portion of the blood vessel adjacent the intended severing location for coagulating the blood and tissue in said region, and applying a second electric power to said region at said severing location by means of a blunt electric power application means for severing the blood vessel.
Claim 38
Independent Claim 65 words
A method of severing blood vessels, the method comprising the following steps: applying a first electric power to a portion of the blood vessel adjacent the intended severing location for coagulating the blood and tissue in said region, and applying a second electric power to said region at said severing location by means of a blunt electric power application means for severing the blood vessel.
Claim 39
Dependent Claim 73 words
A method according to claim 33 wherein said portion of the blood vessel is compressed prior to and/or during the application of the first electric power, the degree of compression being such that the flow of blood through the blood vessel is such that the blood and tissue for coagulates to form a permanent coagulation clot in the blood vessel adjacent said severing location for allowing severing of the blood vessel without bleeding.
Claim 40
Dependent Claim 30 words
A method according to claim 33 wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a it combination thereof.
Claim 41
Dependent Claim 35 words
A method according to claim 33 wherein the signal is a DC or AC signal such as a LF, an HF or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 42
Dependent Claim 25 words
A method according to claim 33 wherein the first and second electric powers are obtained by means of substantially identical electric current or voltage signals.
Claim 43
Dependent Claim 22 words
A method according to claim 36 wherein the first and/or second electric powers are delivered by a 60 Watt 500 kHz generator.
Claim 44
Independent Claim 156 words
A method of coagulating and for making incisions in or severing tissue such as for instance blood vessels, the method comprising the following steps: providing at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, providing first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, providing at least one electric power application means for applying a second electric power to at least part of said tissue portion, immobilizing said tissue portion by applying said immobilizing means to the tissue portion, applying the first electric power to the tissue portion for coagulating at least part of the tissue portion, and applying the second electric power to at least part of said tissue portion by means of a blunt incision means for at least assisting in performing an incision in or severing the tissue portion.
Claim 45
Independent Claim 156 words
A method of coagulating and for making incisions in or severing tissue such as for instance blood vessels, the method comprising the following steps: providing at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, providing first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, providing at least one electric power application means for applying a second electric power to at least part of said tissue portion, immobilizing said tissue portion by applying said immobilizing means to the tissue portion, applying the first electric power to the tissue portion for coagulating at least part of the tissue portion, and applying the second electric power to at least part of said tissue portion by means of a blunt incision means for at least assisting in performing an incision in or severing the tissue portion.
Claim 46
Dependent Claim 29 words
A method according to claim 39 wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a combination thereof.
Claim 47
Dependent Claim 36 words
A method according to claim 40 , wherein the signal is a DC or AC signal such as a LF, an HF or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 48
Dependent Claim 35 words
A method according to claim 40 wherein the signal is a DC or AC signal such as a LF, an BY or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 49
Dependent Claim 25 words
A method according to claim 39 wherein the first and second electric powers are obtained by means of substantially identical electric current or voltage signals.
Claim 50
Dependent Claim 22 words
A method according to claim 39 wherein the first and/or second electric powers are delivered by a 60 Watt 500 kHz generator.
Claim 51
Dependent Claim 152 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: an elongated tubular member having a proximal and a distal end and a lumen extending therethrough, first and second moveable forceps jaws extending from said distal end, opening and closing means for opening and closing the first and second forceps jaws relative to one another, first electrical means for applying a first electric voltage across the first and second forceps jaws, a blunt electric power application means extending from said distal end and arranged for being moved through a tissue portion held between the first and second forceps jaws, at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and second electrical means for applying a second electric voltage to the electric power application means relative to the first and/or the second forceps jaws.
Claim 52
Dependent Claim 152 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising: an elongated tubular member having a proximal and a distal end and a lumen extending therethrough, first and second moveable forceps jaws extending from said distal end, opening and closing means for opening and closing the first and second forceps jaws relative to one another, first electrical means for applying a first electric voltage across the first and second forceps jaws, a blunt electric power application means extending from said distal end and arranged for being moved through a tissue portion held between the first and second forceps jaws, at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, and second electrical means for applying a second electric voltage to the electric power application means relative to the first and/or the second forceps jaws.
Claim 53
Dependent Claim 19 words
A device according to claim 45 wherein the first electric voltage is substantially equal to the second electric voltage.
Claim 54
Dependent Claim 20 words
A device according to claim 45 and further comprising a handle fixed to said proximal end of the tubular member.
Claim 55
Dependent Claim 37 words
A device according to claim 47 wherein the opening and closing means comprise adjustable spring loading means for applying a specific or an adjustable spring load for closing the first and second jaws relative to one another.
Claim 56
Dependent Claim 25 words
A device according to claim 48 wherein the handle comprises spring load adjusting means for manually adjusting the spring load of the spring loading means.
Claim 57
Dependent Claim 21 words
A device according to claim 47 wherein the handle comprises forceps activating means for manually activating the opening and closing means.
Claim 58
Dependent Claim 28 words
A device according to claim 47 wherein the handle comprises incision activating means for manually activating the movement of the electric power application means through the tissue portion.
Claim 59
Dependent Claim 28 words
A device according to claim 47 wherein the handle comprises switching means for activating the first and second electrical means for applying said first and second electric voltages.
Claim 60
Dependent Claim 43 words
A device according to claim 47 , wherein said at least one tubular element extends from said handle through said elongated tubular member and communicates through a fiber tubular element with an external source for the supply of said electrically non-conductive, cooling liquid.
Claim 61
Dependent Claim 24 words
A device according to claim 53 , wherein said at least one tubular element is exposed at said distal end of said tubular member.
Claim 62
Dependent Claim 25 words
A device according to claim 53 , wherein said further tubular element comprises a pump for controlling the supply of said electrically non-conductive, cooling liquid.
Claim 63
Dependent Claim 53 words
A device according to claim 47 , wherein the switching means are adapted to cooperate with the incision activating means such that the first electric voltage is applied in the deactivated condition of said incision activating means while the second electric voltage is applied in the activated condition of said incision activating means.
Claim 64
Dependent Claim 22 words
A device according to claim 45 , wherein the electric power application means comprise a plate member having a blunt leading edge.
Claim 65
Dependent Claim 39 words
A device according to claim 47 , wherein the plate member except the leading edge portion is electrically insulated from the surroundings such that electric power only may be supplied to the tissue portion through said leading edge portion.
Claim 66
Dependent Claim 34 words
A device according to claim 45 , wherein the electric power application means comprise a wire member arranged for being moved through the tissue portion and for supplying electric power to the tissue portion.
Claim 67
Dependent Claim 14 words
A device according to claim 45 , said electrically non-conductive, cooling liquid being Glycin®.
Claim 68
Dependent Claim 115 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one blunt incision means for making incisions in at least part of said tissue portion, and at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, the immobilizing means comprising adjustable spring loading means for applying an adjustable spring load for immobilizing the tissue portion.
Claim 69
Dependent Claim 115 words
An electrosurgical device for coagulating and for making incisions in or severing tissue such as for instance blood vessels, said device comprising at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, first electrical means for applying electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, at least one blunt incision means for making incisions in at least part of said tissue portion, and at least one tubular element for supplying an electrically non-conductive, cooling liquid to said tissue portion, the immobilizing means comprising adjustable spring loading means for applying an adjustable spring load for immobilizing the tissue portion.
Claim 70
Dependent Claim 29 words
A device according to claim 61 , wherein the spring load is manually adjustable depending on the characteristics of the tissue portion to be immobilized by the immobilizing means.
Claim 71
Dependent Claim 40 words
A device according to claim 61 , wherein the immobilizing means comprise first and second moveable forceps jaws and moving means for opening and closing the first and second jaws relative to one another for holding the tissue portion therebetween.
Claim 72
Dependent Claim 33 words
A device according to claim 63 , wherein the moving means comprise adjustable spring loading means for applying an adjustable spring load for closing the first and second jaws relative to one another.
Claim 73
Independent Claim 92 words
A method of severing blood vessels, the method comprising the following steps: applying a first electric power to a portion of the blood vessel adjacent the intended severing location for coagulating the blood and tissue in said region, applying a second electric power to said region at said severing location by means of a blunt electric power application means for severing the blood vessel, and supplying an electrically non-conductive, cooling liquid to said portion of said blood vessel and/or to said region while applying said first and/or said second electric power, respectively.
Claim 74
Independent Claim 92 words
A method of severing blood vessels, the method comprising the following steps: applying a first electric power to a portion of the blood vessel adjacent the intended severing location for coagulating the blood and tissue in said region, applying a second electric power to said region at said severing location by means of a blunt electric power application means for severing the blood vessel, and supplying an electrically non-conductive, cooling liquid to said portion of said blood vessel and/or to said region while applying said first and/or said second electric power, respectively.
Claim 75
Dependent Claim 74 words
A method according to claim 65 , wherein said portion of the blood vessel is compressed prior to and/or during the application of the first electric power, the degree of compression being such that the flow of blood through the blood vessel is such that the blood and tissue for coagulates to form a permanent coagulation clot in the blood vessel adjacent said severing location for allowing severing of the blood vessel without bleeding.
Claim 76
Dependent Claim 30 words
A method according to claim 65 , wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a combination thereof.
Claim 77
Dependent Claim 36 words
A method according to claim 65 , wherein the signal is a DC or AC signal such as a LF, an HF or an RF signal for instance a VHF, a UHF or a microwave signal.
Claim 78
Dependent Claim 26 words
A method according to claim 65 , wherein the first and second electric powers are obtained by means of substantially identical electric current or voltage signals.
Claim 79
Dependent Claim 23 words
A method according to claim 68 , wherein the first and/or second electric powers are delivered by a 60 Watt 500 kHz generator.
Claim 80
Independent Claim 179 words
A method of coagulating and for making incisions in or severing tissue such as for instance blood vessels, the method comprising the following steps: providing at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, providing first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, providing at least one electric power application means for applying a second electric power to at least part of said tissue portion, immobilizing said tissue portion by applying said immobilizing means to the tissue portion, applying the first electric power to the tissue portion for coagulating at least part of the tissue portion, and applying the second electric power to at least part of said tissue portion by means of a blunt incision means for at least assisting in performing an incision in or severing the tissue portion, supplying an electrically non-conductive, cooling liquid to said tissue portion while applying said first and/or said second electric power to said tissue portion.
Claim 81
Independent Claim 179 words
A method of coagulating and for making incisions in or severing tissue such as for instance blood vessels, the method comprising the following steps: providing at least one immobilizing means for immobilizing a tissue portion to be coagulated and incised, providing first electrical means for applying a first electric power to the tissue portion immobilized by the immobilizing means for coagulating at least part of said tissue portion, providing at least one electric power application means for applying a second electric power to at least part of said tissue portion, immobilizing said tissue portion by applying said immobilizing means to the tissue portion, applying the first electric power to the tissue portion for coagulating at least part of the tissue portion, and applying the second electric power to at least part of said tissue portion by means of a blunt incision means for at least assisting in performing an incision in or severing the tissue portion, supplying an electrically non-conductive, cooling liquid to said tissue portion while applying said first and/or said second electric power to said tissue portion.
Claim 82
Dependent Claim 30 words
A method according to claim 71 , wherein the first and/or the second electrical power is constituted by an electric current signal, an electric voltage signal or a combination thereof.
Claim 83
Dependent Claim 14 words
A method according to claim 71 , said electrically non-conductive, cooling liquid being Glycin®.
Claim 84
Dependent Claim 26 words
A method according to claim 71 , wherein the first and second electric powers are obtained by means of substantially identical cleric current or voltage signals.

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