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Electrosurgical device and high-frequency treatment device

A technology of electrosurgery and high-frequency power, applied in the directions of surgery, surgical forceps, parts of surgical instruments, etc., can solve the problems of insufficient dehydration of living tissue and weakened joint force of target parts.

Active Publication Date: 2014-07-02
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] On the other hand, according to the technology disclosed in Japanese Patent Application Laid-Open No. 2008-36439, the output power and the like are determined only based on the initial tissue impedance response. As a result, the following problems arise: the living tissue at the target site is not sufficiently dehydrated, The bonding force of the target part is weakened
[0009] In addition, the technologies disclosed in Japanese Patent Application Publication No. 2001-269353, Japanese Patent Application Publication No. 2001-29355, Japanese Patent Application Publication No. 2000-107197, and Japanese Patent Application Publication No. 2001-252284 also have the following problems : The biological tissue of the target part is not sufficiently dehydrated, and the bonding force of the target part becomes weak

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no. 1 approach

[0042] Figure 1 to Figure 6 It is a figure related to 1st Embodiment of this invention. figure 1 It is a figure showing the structure of the main part of the electrosurgical apparatus concerning 1st Embodiment of this invention. figure 2 It is a graph showing the temporal change of the impedance value of living tissue. image 3 It is a graph showing the temporal change of the electric power value applied to the living tissue. Figure 4 It is a diagram showing how the frequency of high-frequency power applied to living tissue changes stepwise. Figure 5 is expressed in figure 1 Diagram of an example of the treatment performed in the electrosurgical device. Image 6It is a graph showing the relationship between the frequency and the electrical conductivity of living tissue.

[0043] like figure 1 As shown, the electrosurgical device 1 is configured to have a high-frequency power supply device 2 and a treatment instrument 3, the high-frequency power supply device 2 ou...

no. 2 approach

[0079] Hereinafter, a high-frequency treatment device and a high-frequency control method used for joint treatment of living tissues such as digestive tracts will be described as examples.

[0080] refer to Figure 7 to Figure 15 A second embodiment of the present invention will be described.

[0081] refer to Figure 7 The high-frequency treatment device will be described.

[0082] A treatment high-frequency signal for treating living tissue is used in the high-frequency treatment device. That is, in the power supply device 130 , electric power is supplied from the DC power supply circuit 131 to the treatment high-frequency signal generation circuit 132 . The treatment high-frequency signal generation circuit 132 generates a treatment high-frequency signal under the control of the waveform generation circuit 133 and outputs it to the output transformer 134 . The output transformer 134 is connected to a pair of output terminals. A pair of output terminals of the power sup...

no. 3 approach

[0112] refer to Figure 16 to Figure 19 A third embodiment of the present invention will be described.

[0113] In this embodiment, in order to measure the impedance of the living tissue to be treated, a relatively high detection frequency is used.

[0114] refer to Figure 16 , in the power supply device 130 , power is supplied from the DC power supply circuit 131 to the detection high-frequency signal generation circuit 151 . The detection high-frequency signal generating circuit 151 generates a detection high-frequency signal and outputs it to the output transformer 134 . Similar to the treatment high-frequency signal, the detection high-frequency signal is supplied from the output transformer 134 to the pair of electrodes 142 via the pair of signal lines 137 of the cable 136 , and applied to the living tissue gripped by the pair of electrodes 142 . In this way, the high-frequency signal output means for detection is formed by the DC power supply circuit 131 , the high-f...

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Abstract

An electrosurgical apparatus in the present invention has a high frequency power generation section which generates high frequency power to be applied to a living tissue, a voltage detection section which detects the voltage of the high frequency power, a current detection section which detects the current of the high frequency power, an impedance computation section which computes the impedance of the living tissue between grasping members for grasping the living tissue therebetween on the basis of the voltage and the current, and a control section which, when the impedance exceeds a predetermined threshold value, performs control for increasing the frequency of the high frequency power stepwise on the high frequency power generation section.

Description

technical field [0001] The present invention relates to an electrosurgical device, a control method of the electrosurgical device, a high-frequency treatment device and a high-frequency treatment method, in particular to an electrosurgical device and an electrosurgical device that use high-frequency power to treat biological tissues A control method, a high-frequency treatment device, and a high-frequency treatment method. Background technique [0002] Conventionally, an electrosurgical device such as an electric scalpel is used for incision, coagulation, or hemostasis of living tissue during surgery or the like. Such an electrosurgical apparatus includes, for example, a high-frequency power supply that outputs high-frequency power and a treatment instrument connected to the high-frequency power supply. [0003] Furthermore, when the electrosurgical apparatus having the above configuration is used for coagulation or hemostasis of living tissue, for example, it is known that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12
CPCA61B2018/00875A61B2018/00678A61B2018/128A61B18/1206A61B18/1442
Inventor 三堀贵司蒲谷晃则
Owner OLYMPUS CORP