JP2022152469A - Cauterization device - Google Patents

Abstract

To provide a cauterization device capable of easily and accurately cauterizing a biological tissue.SOLUTION: A cauterization device 1 comprises electrodes 3 and 4 whose tips are brought into contact with a biological tissue and a power source device 10 connected to the electrodes 3 and 4, and supplies power from the source device 10 to the electrodes 3 and 4 to cauterize the biological tissue. When a cauterization mode is inputted from an operation unit 12, a control unit 13 in the power source 10 supplies a cauterization power capable of cauterizing the biological tissue to the electrodes, meanwhile, when a search mode is inputted from the operation unit 12, supplies a search power which does not cauterize the biological tissue to the electrodes to control output from an output unit 15 based on variation in a flowing current detected by a detection unit 14.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a cauterization device, and more particularly to a cauterization device that cauterizes living tissue to stop bleeding and the like.

BACKGROUND ART For example, a bipolar treatment instrument disclosed in Patent Document 1 is known as an ablation device for performing hemostasis or the like in brain surgery. In this bipolar treatment instrument, a pair of protrusions (electrodes) of a flexible core wire protruding from the distal end of a holder are brought into contact with a bleeding site, and a high-frequency current controlled by a control section is applied between the electrodes to stop bleeding. The operative field is secured.

JP 2012-205618 A

However, in the conventional cautery device, it is difficult to accurately determine whether or not the electrode has come into contact with the living tissue, because the vision of the endoscope or the like is likely to be blocked by the bleeding until hemostasis is completed. In addition, depending on the shape and length of the electrode, there is a possibility that the living tissue may be punctured deeper than expected, resulting in unnecessary deep cauterization.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cauterization apparatus capable of cauterizing living tissue easily and accurately.

The above-described object of the present invention is a cauterizing apparatus that includes an electrode whose tip portion is in contact with living tissue, and a power supply device connected to the electrode, and that cauterizes the living tissue by supplying power from the power supply device to the electrode. A device, wherein the power supply device includes an operation unit that can input an operation mode, a control unit that controls power supplied to the electrode based on the input operation mode, and a detection unit that detects the current flowing through the electrode. and an output section for outputting an energized state of the electrodes, wherein the control section supplies cauterizing power capable of cauterizing living tissue to the electrodes when a cauterization mode is input from the operation section. a cauterizing apparatus that, when a search mode is input from the operation unit, supplies search power that does not cauterize the living tissue to the electrodes, and controls the output of the output unit based on a change in the current detected by the detection unit; achieved by the device.

In this cauterization apparatus, it is preferable that the control unit determines whether or not the electrode has reached a desired living tissue based on the detection by the detection unit, and outputs the determination result from the output unit. The output unit preferably outputs at least one of an intermittent sound and a flashing light, and the control unit outputs the determination result by changing at least one of the intermittent sound intermittent period and the flashing light flashing period. can do.

ADVANTAGE OF THE INVENTION According to this invention, the cauterization apparatus which can cauterize a biological tissue easily and correctly can be provided.

1 is a schematic configuration diagram of a cautery device according to one embodiment of the present invention; FIG. FIG. 2 is a front view of a main portion of the cautery device shown in FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a cautery device according to one embodiment of the present invention. As shown in FIG. 1 , the cauterization device 1 includes a handpiece 2 that is gripped and operated by a practitioner, and a power supply device 10 .

The handpiece 2 has a pair of electrodes 3 and 4 in the shape of an elongated rod. The electrodes 3 and 4 are covered with a flexible sheath 5, and the sheath 5 has a grip portion 6 on its proximal end side. The tip portions of the electrodes 3 and 4 are exposed from the sheath 5 so as to be able to contact the living tissue 100. By applying a high-frequency current between the electrodes 3 and 4 while in contact with the living tissue 100, The living tissue 100 in the vicinity of the contact portion can be cauterized. The pair of electrodes 3 and 4 may have a contact surface with the living tissue 100 formed by a curved surface such as a spherical surface.

FIG. 2 is a front view of a main portion of the cautery device shown in FIG. 1; As shown in FIGS. 1 and 2 , the power supply device 10 has a housing shape and includes a power supply section 11 , an operation section 12 , a control section 13 , a detection section 14 and an output section 15 . The pair of electrodes 3 and 4 are detachably connected via wiring to a connecting portion 7 provided on the surface of the housing of the power supply device 10 .

The power supply unit 11 generates high frequency power to be supplied to the pair of electrodes 3 and 4 . The power supply unit 11 may use an external commercial power supply or the like.

The operation unit 12, as shown in FIG. 2, has two buttons 12a and 12c for inputting operation modes. One button 12a displayed as "output" is an ablation mode selection switch for selecting an ablation mode. The cauterization mode is a mode in which the living tissue 100 is cauterized by the pair of electrodes 3 and 4, and the magnitude of the cauterization power applied to the electrodes 3 and 4 can be adjusted by operating the adjustment dial 12b. The other button 12c labeled "contact output" is a search mode selection switch for selecting a search mode. The search mode is a mode for searching whether or not the pair of electrodes 3 and 4 have reached the living tissue.

The operation unit 12 further includes an alarm changeover switch 12d and a footswitch 12e. The alarm changeover switch 12d is a switch for switching ON/OFF of notification by sound from the output unit 15. FIG. The foot switch 12e is a switch that allows the practitioner to select the cauterization mode by foot operation. there is

The control unit 13 includes a CPU or the like, and controls power supplied from the power supply unit 11 to the electrodes 3 and 4 based on the operation mode input by operating the operation unit 12 . Also, the control unit 13 controls the output of the output unit 15 .

The detection unit 14 detects current flowing when high-frequency power is supplied from the power supply unit 11 to the electrodes 3 and 4 . Since the current passing through the electrodes 3 and 4 changes according to the impedance between the electrodes 3 and 4, the detector 14 may be configured to output as an impedance instead of outputting as a current value.

As shown in FIG. 2, the output unit 15 has a power lamp 15a indicating the ON/OFF state of the cauterizing apparatus 1, an output lamp 15b indicating the energized state of the electrodes 3 and 4, and an alarm changeover switch 12d. A speaker 15c for outputting sound is provided, and the energization state of the electrodes 3 and 4 is output. The power lamp 15a and the output lamp 15b are, for example, LEDs.

Next, the operation of the cautery device 1 having the above configuration will be described. For example, when cauterizing a bleeding site in a living tissue in brain surgery or the like, the operator presses the search mode selection switch 12c to select the search mode, and then operates the handpiece 2 to operate the tips of the electrodes 3 and 4. toward the desired tissue.

In the search mode, the control unit 13 supplies search power, which is high-frequency power, from the power supply unit 11 to the electrodes 3 and 4 . The magnitude of the applied search power is a weak power that does not cauterize living tissue, and is about 0.5 W, for example. In the search mode, when the tips of the electrodes 3 and 4 reach the desired living tissue, the impedance between the electrodes 3 and 4 changes, thereby changing the current value detected by the detection unit 14 (for example, 0.04 Arms ). Since the impedance of the desired living tissue can be grasped in advance, the control unit 13 can determine whether the electrodes 3 and 4 have reached the desired living tissue based on the detection by the detection unit 14. .

The control unit 13 outputs from the output unit 15 the determination result based on the conduction state of the electrodes 3 and 4 . In other words, until the electrodes 3 and 4 reach the desired living tissue, the blinking period of the blinking light output from the output lamp 15b and the intermittent period of the intermittent sound output from the speaker 15c must be set before arrival. (for example, about 48 times per minute). On the other hand, when the electrodes 3 and 4 reach the desired living tissue, the blinking period of the blinking light and the intermittent period of the intermittent sound are changed to indicate that they have reached the desired tissue (for example, about 120 times per minute). Control so that The change in the output of the output unit 15 is not particularly limited, and for example, the configuration may be such that the volume of the sound or the brightness of the light changes before and after reaching the living tissue. The output unit 15 may be provided in the cauterizing heater 1 instead of being provided in the housing of the power supply device 10 .

By controlling the output unit 15 in this way in the search mode, the operator can easily and accurately determine whether or not the electrodes 3 and 4 have reached the desired living tissue by sight or hearing. can be done. The practitioner can output only flashing light from the output unit 15 by turning off the alarm changeover switch 12d when the determination by the intermittent sound is unnecessary. Note that the output unit 15 may be configured to output only sound without including the output lamp 15b.

After confirming that the electrodes 3 and 4 have reached the desired living tissue by the output of the output unit 15, the operator selects the cauterization mode by operating the cauterization mode selection switch 12a or the foot switch 12e, and then presses the adjustment dial 12b. A cauterizing power suitable for cauterizing a desired living tissue is applied to the electrodes 3 and 4 by the operation. In this way, after reaching the desired living tissue is confirmed in the search mode, cauterization of the living tissue can be quickly started in the cautery mode to stop bleeding at the bleeding site.

The cautery device 1 of the present embodiment has a bipolar configuration including a pair of electrodes 3 and 4, but may have a monopolar configuration in which current is applied between a single electrode and a counter electrode plate. The present invention can also be applied to cauterization using microwaves or the like, in addition to cauterization using high-frequency electricity.

1 cauterization device 3, 4 electrode 10 power supply 11 power supply unit 12 operation unit 13 control unit 14 detection unit 15 output unit 100 living tissue

Claims (3)

An ablation device that includes an electrode whose tip portion contacts a living tissue and a power supply device that is connected to the electrode, and that cauterizes the living tissue by supplying power from the power supply device to the electrode,
The power supply device includes an operation unit that can input an operation mode, a control unit that controls power supplied to the electrode based on the input operation mode, a detection unit that detects the current flowing through the electrode, and and an output unit that outputs an energized state,
When a cauterization mode is input from the operation unit, the control unit supplies cauterization power capable of cauterizing living tissue to the electrodes. A cauterization device that supplies search power that does not cauterize living tissue, and controls the output of the output section based on changes in the energized current detected by the detection section. The cauterization apparatus according to claim 1, wherein the control unit determines whether or not the electrode has reached a desired living tissue based on detection by the detection unit, and outputs a determination result from the output unit. The output unit outputs at least one of intermittent sound and flashing light,
The cauterization apparatus according to claim 2, wherein the control unit outputs the determination result by changing at least one of an intermittent period of the intermittent sound and a blinking period of the blinking light.

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