JP2015047386A - Laser treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser treatment device capable of suppressing unnecessary radiation of a laser beam with large output to biological tissue.SOLUTION: A laser treatment device includes: an operation unit 4 for performing setting of ON/OFF of laser beam irradiation; a notification unit 13 for notifying an ON state of the laser beam irradiation when ON setting of the laser beam irradiation is performed by the operation unit 4; and a laser beam irradiation unit 21 for radiating the laser beam to the outside when ON setting of the laser beam irradiation is performed by the operation unit 4. The laser beam irradiation unit 21 radiates the laser beam to the outside after a predetermined period of time has elapsed since the notification start about the ON state of the laser beam irradiation from the notification unit 13 when ON setting of the laser beam irradiation is performed by the operation unit 4.

Description

  The present invention relates to a laser therapy apparatus.

  In laser treatment, a subject may be irradiated with laser light of two or more different conditions such as laser light output, wavelength, irradiation range, etc. in one treatment. For example, in one treatment, a photodynamic diagnosis method (hereinafter abbreviated as “PDD”) and a photodynamic therapy (hereinafter abbreviated as “PDT”) are performed. It is.

  Laser light used for PDD (hereinafter referred to as “observation light”) and laser light used for PDT (hereinafter referred to as “treatment light”) are conditions (wavelengths) of laser light applied to the subject. The output of the laser light is generally larger for the treatment light than for the observation light.

  Conventionally, a laser treatment apparatus capable of performing PDD and PDT has been proposed (for example, Patent Document 1).

JP 2012-2332014 A

  Unnecessary irradiation of a living tissue with a laser beam having a large output may not be preferable depending on the living tissue.

  The non-limiting exemplary embodiment of the present application provides a laser treatment apparatus that can suppress unnecessary irradiation of a biological tissue with laser light having a high output.

  A laser treatment apparatus according to an aspect of the present application includes an operation unit that sets ON / OFF of laser light irradiation, and ON of the laser light irradiation when the laser light irradiation is turned ON by the operation unit. A notification unit for informing a state; and a laser beam irradiation unit for irradiating the laser beam to the outside in response to the laser beam irradiation being turned on by the operation unit, wherein the laser beam irradiation unit When the laser beam irradiation is turned on in the unit, the laser beam is irradiated to the outside after a predetermined period from the start of notification of the laser beam irradiation ON state from the notification unit.

  The laser treatment apparatus according to one embodiment of the present application can suppress unnecessary irradiation of a living tissue with laser light having a large output.

1 is an example of an external perspective view of a laser treatment apparatus according to Embodiment 1. FIG. 1 is an example of a functional block diagram of a laser treatment apparatus according to Embodiment 1. FIG. 3 is an example of an operation flowchart of the laser treatment apparatus according to the first embodiment.

  The present inventors examined the laser treatment apparatus disclosed in Patent Document 1 in detail.

  In the treatment of PDT, generally, after identifying and specifying the position, size, range, and the like of an affected part by PDD, the specified affected part is treated by PDT. At this time, the surgeon performs PDD and PDT a plurality of times in one treatment, such as performing PDT after performing PDD and performing PDT after performing PDD at another site.

  However, in the laser treatment apparatus disclosed in Patent Document 1, if an operator forgets to switch between observation light and treatment light during treatment, there is a possibility that laser light with a large output may be accidentally irradiated onto the living tissue. I found out that This erroneous irradiation may be undesirable for a living tissue, particularly when the living tissue to be treated is a delicate site, such as a treatment for a brain tumor.

  Therefore, the present inventors have intensively studied a configuration that prevents the surgeon from forgetting to switch between the observation light and the treatment light during the treatment, and can prevent the laser light with a large output from being accidentally irradiated onto the living tissue. As a result, the inventors have arrived at a laser treatment apparatus according to an aspect of an embodiment of the present invention.

  The outline of the laser treatment apparatus according to one aspect of the embodiment of the present disclosure is as follows.

  A laser treatment apparatus according to an aspect of an embodiment of the present disclosure includes an operation unit configured to set ON / OFF of laser light irradiation, and the laser according to the laser light irradiation being turned ON by the operation unit. An informing unit for informing an ON state of light irradiation; and a laser light irradiation unit for irradiating the laser light to the outside in response to the laser light irradiation being turned on by the operation unit. The unit irradiates the laser light to the outside after a predetermined period has elapsed from the start of notification of the laser light irradiation ON state from the notification unit when the laser light irradiation is turned on by the operation unit.

  With such a configuration, when the user turns on laser light irradiation, a notification sound is emitted, and the laser light is emitted after a predetermined period from the start of the generation of the notification sound. Even so, the surgeon can cancel the irradiation of the laser beam during the predetermined period, and the irradiation of the unnecessary laser beam to the living tissue can be suppressed.

  The laser treatment apparatus according to one aspect of the present disclosure will be described below.

(Embodiment 1)
The laser treatment apparatus according to Embodiment 1 will be described below with reference to the drawings.

≪About composition≫
<Overall configuration>
FIG. 1 is a diagram showing an appearance of a laser treatment apparatus 100 according to the first embodiment. The laser treatment apparatus 100 includes a first main body 1, an irradiation unit 2, a light guide fiber 3, an operation unit 4 (4 a, 4 b), and a power cable 5.

<First body part 1>
As shown in the functional block diagram of FIG. 2, the first main body 1 includes a laser light current control unit 11, a laser light output unit 12, a notification unit 13, and a control unit 14.

  The laser light current control unit 11 supplies a predetermined output current to the laser light output unit 12 under the control of the control unit 14.

  The laser beam output unit 12 includes one or more light sources (not shown). Then, the laser beam output unit 12 causes the laser beam to be output from the light source based on a predetermined output current supplied from the laser beam current control unit 11. The light source used here is, for example, a semiconductor laser element. Then, the laser beam output from the laser beam output unit 12 is guided to the laser beam irradiation unit 21 described later via the light guide fiber 3.

  When the laser beam irradiation is set to ON by an operation unit 4b described later, the notification unit 13 notifies the laser beam irradiation ON state. Moreover, the alerting | reporting part 13 performs different alerting | reporting according to the conditions of the laser beam to irradiate. For example, the notification unit 13 emits a first notification sound when PDD is performed (that is, in the case of the laser light condition of observation light), and when PDT is performed (that is, laser light of treatment light). In the case of the condition (2), a second notification sound different from the first notification sound is emitted. In addition, the notification unit 13 may be configured to emit a notification sound for a certain period after the operation unit 4b is set to be ON with laser light irradiation, or while the operation unit 4b is set to be ON with laser light irradiation. Alternatively, the notification sound may be continuously generated.

  In addition, the alerting | reporting by the alerting | reporting part 13 is not limited to alerting | reporting sound, For example, you may perform by alerting | reporting by a display means or alerting | reporting by a warning lamp. That is, the notification unit 13 is a means by which a user such as an operator can recognize whether the laser beam irradiation is turned on in the PDD mode or whether the laser beam irradiation is turned on in the PDT mode. If there is, it will not be specifically limited.

  The control unit 14 controls each block in the first main body 1 based on various settings of the operation unit 4. Specifically, the control unit 14 controls the laser photocurrent control unit 11 according to each mode because the output of the laser light to be irradiated differs between when performing PDD and when performing PDT.

  In addition, when the laser beam irradiation is turned on by the operation unit 4, the control unit 14 first generates a first notification sound or a second notification sound from the notification unit 13.

  After a predetermined period has elapsed from the start of generation of the first notification sound or the second notification sound from the notification unit 14 (for example, two seconds after the first generation of the notification sound), the control unit 14 outputs the laser light output unit 12. The laser light current control unit 11 is controlled so as to output the laser light from.

<Irradiation unit 2>
The irradiation unit 2 includes a laser beam irradiation unit 21 as shown in the functional block diagram of FIG. The laser beam irradiating unit 21 performs at least one of light guiding of the laser beam from the laser beam output unit 12 guided through the light guiding fiber 3 and beam forming by various lenses. Thereby, the laser beam irradiation unit 21 irradiates the laser beam as the observation light in the PDD mode, and the laser beam as the treatment light in the PDT mode.

<Light guiding fiber 3>
The light guide fiber 104 guides the laser light output from the laser light output unit 12 to the laser light irradiation unit 21.

<Operation unit 4>
The operation unit 4 (4a, 4b) allows the user to make various settings of the laser treatment apparatus 100, such as setting of the output of the laser beam and irradiation time. For example, as shown in FIG. 1, the operation unit 4 may be configured by a foot switch 4b for turning on / off the laser light irradiation. The operation unit 4 is configured so that the user can select a mode for performing PDT and a mode for performing PDD.

<Power cable 5>
The power cable 5 is connected to an external power source and supplies electricity to the laser treatment apparatus 100.
≪About operation≫
The operation of the laser treatment apparatus 100 having the above configuration will be described with reference to the flowchart of FIG. Here, a user such as an operator generates fluorescence by irradiating observation light to a photosensitive substance accumulated in an affected area such as a tumor by PDD, and the position, size, range, etc. of the affected area are grasped by the fluorescence. Then, a case where treatment is performed by irradiating the affected area with treatment light by PDT will be described.

<Step 1 (S001)>
In step 1 (S001), a user such as an operator selects the PDD mode by operating the operation unit 4.

<Step 2 (S002)>
In step 2 (S002), a user such as an operator presses the operation unit 4 (foot switch 4b). Thereby, the setting of the irradiation of the laser beam as the observation light is turned on.

<Step 3 (S003)>
In step 3 (S003), the notification unit 13 emits a first notification sound under the control of the control unit 14.

<Step 4 (S004)>
In step 4 (S004), a user such as a surgeon determines whether or not the notification sound generated from the notification unit 13 is the first notification sound. If the user determines that the notification sound emitted from the notification unit 13 is the first notification sound, the user continues to press the foot switch 4b as it is and proceeds to step 5 (S005).

  On the other hand, when the user mistakenly selects the setting of the operation unit 4 to the PDT mode in step 1 (S001), the notification unit 13 emits a second notification sound. In this case, the user understands that the PDT mode has been selected from the second notification sound, and releases the pressing of the foot switch 4b. If the user releases the pressing of the foot switch 4b from the notification unit 13 before the predetermined period elapses after the second notification sound is generated, the laser beam irradiation unit 21 does not irradiate the laser beam. Then, the user returns to step 1 (S001) again and selects the PDD mode with the operation unit 4.

<Step 5 (S005)>
In step 5 (S005), the user continues to press the foot switch 4b from step 3 (S003), so that the laser beam irradiation unit 21 starts after a predetermined period from the start of generation of the first notification sound from the notification unit 13. Laser light is irradiated as observation light. That is, the control unit 14 supplies the laser light output unit 12 with the output current of the PDD mode condition to the laser light current control unit 11 after a predetermined period has elapsed since the start of the first notification sound generation from the notification unit 13. To the laser photocurrent control unit 11. The laser light output from the laser light output unit 12 is guided to the laser light irradiation unit 21 by the light guide fiber 13, and the observation light converted into the observation light by the laser light irradiation unit 21 is irradiated with the laser light. The light is emitted outside the portion 21.

  Thereby, a user such as a surgeon generates fluorescence by irradiating observation light to a photosensitive substance accumulated in an affected area such as a tumor, and grasps the position, size, range, etc. of the affected area based on the fluorescence. Can do.

<Step 6 (S006)>
In step 6 (S006), a user such as an operator selects the PDT mode by operating the operation unit 4 after grasping the position, size, range, and the like of the affected part in the observation site.

<Step 7 (S007)>
In step 7 (S007), a user such as an operator presses the operation unit 4 (foot switch 4b). Thereby, the setting of the irradiation of the laser beam as the treatment light is turned ON.

<Step 8 (S008)>
In step 8 (S008), the notification unit 13 emits a second notification sound under the control of the control unit 14.

<Step 9 (S009)>
In step 9 (S009), a user such as an operator determines whether the notification sound generated from the notification unit 13 is the second notification sound. If the user determines that the notification sound generated from the notification unit 13 is the second notification sound, the user continues to press the foot switch 4b as it is and proceeds to step 10 (S0010).

  On the other hand, when the user forgets to switch from the PDD mode to the PDT mode in step 6 (S006), the notification unit 13 generates a first notification sound. In this case, the user understands that the PDD mode is selected from the first notification sound, and releases the pressing of the foot switch 4b. If the user releases the press of the foot switch 4b from the notification unit 13 before the predetermined period has elapsed since the first notification sound is generated, the laser beam irradiation unit 21 does not irradiate the laser beam. Then, the user returns to step 6 (S006) again and selects the PDT mode with the operation unit 4.

<Step 10 (S0010)>
In step 10 (S0010), the user continues to press the foot switch 4b from step 7 (S007), so that the laser beam irradiation unit 21 starts after a predetermined period from the start of generation of the second notification sound from the notification unit 13. Laser light is irradiated as treatment light. That is, the control unit 14 supplies the laser light output unit 12 with the output current under the PDT mode condition after the predetermined period has elapsed since the start of the generation of the second notification sound from the notification unit 13. The laser photocurrent control unit 11 is instructed as follows. The laser beam output from the laser beam output unit 12 is guided to the laser beam irradiation unit 21 by the light guide fiber 13, and the treatment light converted into the observation light by the laser beam irradiation unit 21 is irradiated with the laser beam. The light is emitted outside the portion 21.

  Thus, a user such as a surgeon irradiates the photosensitive substance accumulated in the affected area with treatment light, thereby generating singlet oxygen from the photosensitive substance, and treating the affected area with the singlet oxygen. Can do.

<< Summary of Embodiment 1 >>
As described above, according to the laser treatment apparatus of one aspect of the present invention described in Embodiment 1, a notification sound is emitted when a user turns on laser light irradiation, and a predetermined sound is generated from the start of the generation of the notification sound. Since laser light is irradiated after the period has elapsed, even if laser light with an incorrect condition is set, irradiation of the laser light can be canceled during the predetermined period, and unnecessary laser light can be emitted to the living tissue. Irradiation can be suppressed.

In the first embodiment, when laser light irradiation is turned on in the operation unit, the laser light is output after a predetermined period after the notification sound is first emitted. The present invention is not limited to such control. For example, at least one of the laser beam output unit 12 and the laser beam irradiation unit 21 is provided with a shutter mechanism, and when the laser beam irradiation is turned ON, a notification sound is emitted and the laser beam output unit 12 emits the laser beam. A configuration may be employed in which laser light is emitted to the outside of the laser light irradiation unit 21 by performing control to open the shutter mechanism after a predetermined period of time has elapsed since the start of generation of the notification sound from the notification unit 13.

  The non-limiting exemplary embodiment of the present application provides a laser treatment apparatus that can suppress unnecessary irradiation of a biological tissue with laser light having a high output. Therefore, the laser treatment apparatus of the present invention is useful for laser treatment (particularly, PDT) in which a subject is irradiated with laser light of two or more different conditions in one treatment.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Irradiation unit 3 Light guide fiber 4, 4a, 4b Operation part 5 Power cable 11 Laser photocurrent control part 12 Laser light output part 13 Notification part 14 Control part 21 Laser light irradiation part 100 Laser treatment apparatus

Claims (5)

An operation unit for setting ON / OFF of laser light irradiation;
An informing unit for informing the ON state of the laser light irradiation when the laser light irradiation is set to ON in the operation unit;
A laser beam irradiation unit that irradiates the laser beam to the outside in accordance with the setting of the laser beam irradiation ON in the operation unit;
The laser beam irradiation unit emits the laser beam after a predetermined period from the start of notification of the ON state of the laser beam irradiation from the notification unit when the laser beam irradiation is set to ON in the operation unit. Laser therapy device that irradiates the outside.   The notification unit performs the first notification when the laser beam irradiation unit is irradiated with the laser beam of the first condition, and the laser beam irradiation unit is irradiated with the laser beam of the second condition. The laser treatment apparatus according to claim 1, wherein a second notification is performed.   The laser treatment device according to claim 1, wherein the notification unit continuously notifies the ON state of the laser light irradiation while the laser light irradiation is in the ON state by the operation unit.   The laser treatment device according to any one of claims 1 to 3, wherein the notification unit notifies an ON state of the irradiation of the laser light by a notification sound.   When the laser light irradiation unit is irradiated with the laser light of the first condition, the notification unit notifies the first notification sound, and the laser light irradiation unit is irradiated with the laser light of the second condition. The laser treatment apparatus according to any one of claims 1 to 4, wherein a second notification sound different from the first notification sound is used for notification in the case of occurrence.