JP2017046824A - Photoacoustic imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photoacoustic imaging apparatus capable of suppressing wrong mounting of a light source unit.SOLUTION: A photoacoustic imaging apparatus 100 includes a light source unit 21 having a light source part for irradiating light onto a subject, and a detection unit 20a for detecting an acoustic wave generated from a detection object in the subject that has absorbed the light irradiated from the light source part, and is provided with a probe body 20 configured so that the light source unit 21 can be attached or detached, and an identification unit provided to the light source unit 21 for a user to identify at least one of a wavelength of the light emitted from the light source part and energy of the light emitted from the light source part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a photoacoustic imaging apparatus, and more particularly to a photoacoustic imaging apparatus including a light source unit.

  Conventionally, an ultrasonic device that detects an acoustic wave is known (see, for example, Patent Document 1).

  Patent Document 1 discloses an ultrasonic apparatus including a probe main body including a detection unit that detects an acoustic wave and an apparatus main body. The probe body includes a resistor. The apparatus main body includes a resistance measurement circuit. This ultrasonic apparatus is configured to measure the resistance value of the resistor of the probe body by the resistance measurement circuit when the probe body is connected. The ultrasonic device is configured to identify and electrically control the probe body connected to the device body based on the resistance value of the resistor of the probe body.

JP 2006-345964 A

  In the ultrasonic apparatus described in Patent Document 1, the apparatus main body can identify the connected probe main body based on the resistance value of the resistor of the probe main body. Here, the technique disclosed in Patent Document 1 described above is applied to a photoacoustic imaging apparatus including a light source unit including a light source unit that irradiates light to a specimen and a probe main body configured to be detachable from the light source unit. When applied, by providing a resistor in the light source unit and providing a resistance measurement circuit in the probe body, the photoacoustic imaging apparatus can identify the light source unit attached to the probe body.

  However, in such a configuration, when a light source unit that is not intended by the user is mistakenly attached to the probe body (erroneous attachment), the photoacoustic imaging apparatus operates normally, but an image intended by the user is obtained. Absent.

  The present invention has been made to solve the above problems, and one object of the present invention is to provide a photoacoustic imaging apparatus capable of suppressing erroneous mounting of a light source unit. is there.

  A photoacoustic imaging apparatus according to an aspect of the present invention is generated from a light source unit including a light source unit that irradiates light to a subject and a detection target in the subject that absorbs light emitted from the light source unit. A probe main body configured to include a detection unit for detecting an acoustic wave and configured to be detachable from the light source unit, and a wavelength of light emitted from the light source unit or emitted from the light source unit. And an identification unit for the user to identify at least one of the energy of light.

  In the photoacoustic imaging apparatus according to one aspect of the present invention, as described above, at least one of the wavelength of light emitted from the light source unit and the energy of light emitted from the light source unit provided in the light source unit. An identification part for identifying the user is provided. Thereby, the user can identify the wavelength of the light emitted from the light source unit of the light source unit or the energy of the light by checking the identification unit. As a result, it is possible to prevent the user from mistakenly attaching the light source unit that is not intended to the probe body. Therefore, erroneous mounting of the light source unit can be suppressed.

  In the photoacoustic imager according to the above aspect, the identification unit is preferably provided in a portion exposed to the outside of the light source unit. If comprised in this way, the user can visually recognize an identification part easily, or can touch an identification part with a finger (hand) easily, for example. Thereby, the wavelength of the light emitted from the light source unit of the light source unit or the energy of the light can be easily identified.

  In the photoacoustic imaging apparatus according to the above aspect, the light source unit preferably includes a cover member that covers the light source unit, and the identification unit is formed integrally with the cover member. If comprised in this way, unlike the case where an identification part and a cover member are formed separately, erroneous mounting | wearing of a light source unit can be suppressed, reducing a number of parts.

  In the photoacoustic imaging apparatus according to the above aspect, the identifying unit preferably identifies at least one of a wavelength of light emitted from the light source unit or energy of light emitted from the light source unit. It is colored. If comprised in this way, since the wavelength of the light radiate | emitted from the light source part of a light source unit or the energy of light can be identified intuitively visually, it is easy to suppress incorrect mounting | wearing of a light source unit. Can do.

  In this case, preferably, a color for identifying the wavelength of light emitted from the light source unit is attached to the identification unit. If comprised in this way, the wavelength of the light radiate | emitted from a light source part can be identified intuitively visually.

  In the configuration in which the identification unit is provided with a color for identifying the wavelength of the light emitted from the light source unit, the light source unit is preferably configured to emit a plurality of lights having different wavelengths, and is identified. The section is provided with a plurality of colors for identifying a plurality of lights having different wavelengths. If comprised in this way, the different wavelength of the some light radiate | emitted from a light source part can be easily identified by the difference in color.

  In the photoacoustic imaging apparatus according to the above aspect, preferably, the identification unit identifies for identifying at least one of a wavelength of light emitted from the light source unit or energy of light emitted from the light source unit. Includes shape. If comprised in this way, the wavelength of the light radiate | emitted from the light source part of a light source unit or light energy will be identified intuitively by touching an identification shape with a finger (hand) or visually recognizing an identification shape. be able to. Thereby, erroneous mounting of the light source unit can be easily suppressed.

  In this case, preferably, the identification shape includes a convex or concave first identification shape for identifying the energy of light emitted from the light source unit. If comprised in this way, the energy of the light radiate | emitted from a light source part can be identified easily by touching a convex or concave 1st identification shape with a finger (hand) or visually recognizing a 1st identification shape. Can do.

  In the configuration including the identification shape for identifying at least one of the wavelength of the light emitted from the light source unit or the energy of the light emitted from the light source unit, the identification shape is preferably the light source unit. A convex or concave second identification shape for identifying the wavelength of light emitted from the light source. If comprised in this way, the wavelength of the light radiate | emitted from a light source part can be identified easily by touching a convex or concave 2nd identification shape with a finger (hand) or visually recognizing a 2nd identification shape. Can do.

  In the configuration in which the identification shape includes the second identification shape, preferably, the light source unit is configured to emit a plurality of lights having different wavelengths, and the second identification shape identifies the plurality of lights having different wavelengths. Therefore, a different number is provided for each wavelength. If comprised in this way, the different wavelength of the several light radiate | emitted from a light source part can be easily identified by touching a 2nd identification shape with a finger (hand) or visually recognizing a 2nd identification shape. .

  In the configuration in which the second identification shape is provided in a different number for each wavelength in order to identify a plurality of lights having different wavelengths, the identification unit is preferably configured such that the light source unit emits light having different wavelengths. The number of rails or grooves corresponding to the number of types is included, and the identification shape is arranged on the rails or grooves. If comprised in this way, the number of the types of the several light of a different wavelength radiate | emitted from a light source part can be easily identified by touching or visually recognizing a rail part or a groove part. Further, the shape of the identification portion can be simplified as compared with the case where the identification shape is not disposed on the rail portion or the groove portion.

  According to the present invention, as described above, erroneous mounting of the light source unit can be suppressed.

1 is a block diagram illustrating an overall configuration of a photoacoustic imaging apparatus according to a first embodiment of the present invention. It is the schematic diagram which showed the photoacoustic imaging device by 1st Embodiment of this invention. It is a disassembled perspective view of the light source unit of the photoacoustic imaging device by 1st Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by 1st Embodiment of this invention. It is the figure which showed another identification part of the photoacoustic imaging device by 1st Embodiment of this invention. It is the figure which showed another identification part of the photoacoustic imaging device by 1st Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by 2nd Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by 3rd Embodiment of this invention. It is the figure which showed another identification part of the photoacoustic imaging device by 3rd Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by 4th Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 1st modification of 1st Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 2nd modification of 1st Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 3rd modification of 1st Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 4th modification of 2nd Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 5th modification of 3rd Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 6th modification of 3rd Embodiment of this invention. It is the figure which showed the identification part of the photoacoustic imaging device by the 7th modification of 4th Embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

[First Embodiment]
(Configuration of photoacoustic imaging device)
With reference to FIGS. 1-6, the whole structure of the photoacoustic imaging device 100 by 1st Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the photoacoustic imaging apparatus 100 includes a photoacoustic imaging apparatus main body (hereinafter referred to as an apparatus main body) 1 and a probe 2. The apparatus main body 1 includes a signal processing unit 11, an image display unit 12, a drive power supply unit 13, a light source drive circuit 14, and a control unit 15. The apparatus main body 1 and the probe 2 are connected by a cable 3 (see FIG. 2) for transmitting and receiving electrical signals.

  The photoacoustic imaging apparatus 100 is configured to irradiate light from a probe 2 into a subject P (for example, a human body). The photoacoustic imaging apparatus 100 thermally expands a detection target Q (for example, blood and a puncture needle) that has absorbed light in the subject P, and generates an acoustic wave (ultrasound) A from the detection target Q. It is configured to let you. The photoacoustic imaging apparatus 100 is an apparatus for detecting the acoustic wave A generated from the detection target Q by the probe 2 and imaging the detection target Q based on the detected acoustic wave A.

  In addition, the ultrasonic wave in this specification is a sound wave (elastic wave) whose frequency is so high that it does not cause an auditory sensation in a person with normal hearing ability, and is a concept indicating a sound wave of about 16000 Hz or higher. Further, in the present specification, an ultrasonic wave generated when the detection object Q in the subject P absorbs light emitted from the light source unit 24 (24a, 24b) described later is referred to as “acoustic wave (acoustic wave A). ) ". In addition, an ultrasonic wave that is generated by the detection unit 20a to be described later and reflected by the detection target Q in the subject P is simply referred to as “ultrasonic wave”.

  The signal processing unit 11 is configured to image the detection target Q based on the acoustic wave A detected by the detection unit 20 a and display an image on the image display unit 12.

  The drive power supply unit 13 is a power supply unit for supplying power to the probe 2.

  The light source drive circuit 14 has a pair of LED drive circuits 14a and 14b. Based on the signal from the signal processing unit 11, the LED drive circuit 14a (14b) is configured to supply predetermined power to the light source unit 24a of the light source unit 21a (the light source unit 24b of the light source unit 21b), which will be described later. Has been.

  The control unit 15 is configured to perform overall control of the photoacoustic imaging apparatus 100.

(Probe configuration)
As shown in FIG. 2, the probe 2 includes a probe main body 20 and a light source unit 21 (21a, 21b).

  The probe body 20 is configured so that the light source unit 21 can be attached and detached. The probe main body 20 includes a detection unit 20a in the approximate center near the tip (Z1 side). Thereby, when the photoacoustic imaging apparatus 100 is used, the detection unit 20a can be brought close to the subject P.

  The detection unit 20a is configured to detect the acoustic wave A generated from the detection target Q in the subject P that has absorbed the light emitted from the light source unit 24a (24b). The detection unit 20a is configured by an ultrasonic transducer.

  The detection unit 20a is formed by arranging a large number of ultrasonic transducers (not shown) in an array. The detection unit 20a is formed in a rectangular flat plate shape. The detection unit 20 a is configured to be able to detect the acoustic wave A and to irradiate the subject P with ultrasonic waves based on the control signal of the signal processing unit 11. The detection unit 20 a is connected to the signal processing unit 11 through the cable 3, and the acoustic wave A generated from the detection target Q in the subject P and the ultrasonic wave reflected in the subject P are detected. It is configured to detect and output a detection signal to the signal processing unit 11.

  The light source unit 21 includes a pair of light source units 21a and 21b. The light source units 21a and 21b are arranged so as to sandwich the tip end portion of the probe main body 20 on the Z1 side.

  As shown in FIG. 3, the light source unit 21 includes an attachment part 22, an identification part 23, a light source part 24, a light source fixture 25, and a substrate 26. Specifically, the light source unit 21a includes an attachment portion 22a, an identification portion 23a, a light source portion 24a, a light source fixture 25a, and a substrate 26a. Further, the light source unit 21b including the light source unit 24b (see FIG. 1) includes an attachment unit, an identification unit, a light source fixture, and a substrate, similarly to the light source unit 21a. In the first embodiment, the light source units 21a and 21b have substantially the same configuration although the outer shapes are different. Therefore, only the light source unit 21a will be described below, and the description of the light source unit 21b will be omitted.

  The light source unit 21a is configured to be attachable to the probe main body 20 via the attachment portion 22a.

  The identification part 23a is provided in the part exposed to the exterior of the light source unit 21a. The identification part 23a is formed integrally with the cover member. Specifically, in the first embodiment, the identification unit 23a is a cover member that covers the light source unit 24a. An opening 231a is provided on the distal end side (Z1 side) of the probe main body 20 of the identification unit 23a. In addition, if the part corresponding to the opening part 231a of the identification part 23a is formed of a transparent member (a member that hardly absorbs light), the opening part 231a may not be provided. A light source 24a, a light source fixture 25a, and a substrate 26a are arranged in a space surrounded by the identification part 23a and the attachment part 22a. The detailed configuration of the identification unit 23a will be described later.

  The light source unit 24a is configured to irradiate the subject P with light. The light source unit 24a includes an LED element on the surface on the Z1 side. The light source unit 24a may include a semiconductor laser element or an organic light emitting diode element. In the first embodiment, the light source unit 24a includes LED elements that can emit different wavelengths. The light source unit 24a includes, for example, an LED element that can emit two different wavelengths (750 nm and 850 nm, or 850 nm and 950 nm). Specifically, the light source unit 24a includes a plurality of LED elements capable of emitting 750 nm and LED elements capable of emitting 850 nm (LED elements capable of emitting 850 nm and LED elements capable of emitting 950 nm). The light source unit 24 a is configured to be able to switch and emit two or more types of light having different wavelengths based on the control of the light source driving circuit 14. Each LED element is configured to emit light having an energy of 500 W, for example. Further, the light source unit 24a includes a plurality of lead wires 241. The lead wire 241 is connected with a specific connection pattern for each wavelength of light emitted from the LED element. Thereby, the wavelength and energy of the light emitted from the light source unit 24a are recognized by the apparatus main body 1, and appropriate power control is performed. The method of recognizing the wavelength and energy of the light emitted from the light source unit 24a described above is an example, and other methods can be used.

  The light source fixture 25a is configured to fix the light source unit 24a so that the light source unit 24a does not move inside the light source unit 21a. The light source fixture 25a is formed in a frame shape. A light source cover (not shown) is disposed on the Z1 side of the light source fixture 25a.

  The substrate 26a is configured to transmit and receive signals to and from the light source driving circuit 14 (see FIG. 1).

(Detailed configuration of identification unit)
Hereinafter, a detailed configuration of the identification unit 23a will be described with reference to FIGS.

  The identification unit 23a is provided for the user to identify the wavelength of light emitted from the light source unit 24a. In other words, the identification unit 23a is a label unit (identification label) for the user to identify the wavelength of light emitted from the light source unit 24a. Specifically, a color for identifying the wavelength of light emitted from the light source unit 24a is attached to the identification unit 23a. Thereby, the user can visually identify the wavelength of the light emitted from the light source unit 24a. Specifically, in the first embodiment, the identification unit 23a is provided with a plurality of colors for identifying a plurality of lights having different wavelengths (two types of lights having different wavelengths). The identification unit 23a is given the same number of different colors as the number of types of light having different wavelengths that can be emitted by the light source unit 24a.

  The example shown in FIG. 4 shows an identification unit 23a of a light source unit 21a including a light source unit 24a including an LED element that emits 750 nm light and an LED element that emits 850 nm light. The identification unit 23a is provided with blue (hereinafter referred to as a blue portion 750) indicating emitted light of 750 nm and green (hereinafter referred to as green portion 850) indicating emitted light of 850 nm. The blue portion 750 and the green portion 850 are colored so that they are aligned in the vertical direction (Z direction, longitudinal direction of the probe body 20). The blue portion 750 is colored so that it is positioned above the green portion 850. The blue portion 750 and the green portion 850 have substantially the same width in the Z direction.

  The example shown in FIG. 5 shows an identification unit 23a of a light source unit 21a including a light source unit 24a including an LED element that emits light at 850 nm and an LED element that emits light at 950 nm. The identification unit 23a is provided with a green portion 850 that indicates an emitted light of 850 nm and a red color (hereinafter referred to as a red portion 950) that indicates an emitted light of 950 nm. The green portion 850 and the red portion 950 are colored so that they are aligned in the Z direction. The green part 850 is colored so as to be positioned above the red part 950. The green portion 850 and the red portion 950 have substantially the same width in the Z direction.

  In the example shown in FIG. 4 and FIG. 5, the color is applied so that the portion showing the short-wavelength emitted light (for example, the blue portion 750) is higher than the portion showing the long-wavelength emitted light (for example, the green portion 850). However, this arrangement relationship can be changed as appropriate, and is colored so that the portion showing the long-wavelength outgoing light is on the upper side (Z2 side) than the portion showing the short-wavelength outgoing light. Also good. Further, as shown in FIG. 6, the green portion 850 and the red portion 950 shown in FIG. 5 may be colored so as to be aligned in a direction perpendicular to the Z direction.

  As a method for coloring the identification portion 23a, various methods such as molding the identification portion 23a by two-color molding or painting a predetermined color directly on the identification portion 23a can be employed.

(Effect of 1st Embodiment)
In the first embodiment, the following effects can be obtained.

  In 1st Embodiment, the identification part 23a for a user to identify the wavelength of the light radiate | emitted from the light source part 24a is provided in the light source unit 21a as mentioned above. Thereby, the user can identify the wavelength of the light emitted from the light source unit 24a of the light source unit 21a by checking the identification unit 23a. As a result, it is possible to prevent the light source unit 21a from being mistaken by the user from being attached to the probe body 20. Therefore, erroneous mounting of the light source unit 21a can be suppressed. As a result, an image intended by the user can be obtained.

  Moreover, in 1st Embodiment, the identification part 23a is provided in the part exposed outside the light source unit 21a. Thereby, for example, the user can easily visually recognize the identification unit 23a. As a result, the wavelength of the light emitted from the light source unit 24a of the light source unit 21a can be easily identified.

  Moreover, in 1st Embodiment, the identification part 23a is integrally formed in a cover member. Thereby, unlike the case where the identification part 23a and the cover member are formed separately, it is possible to suppress erroneous mounting of the light source unit 21a while reducing the number of parts.

  In the first embodiment, a color for identifying the wavelength of light emitted from the light source unit 24a is given to the identification unit 23a. Thereby, since the wavelength of the light emitted from the light source unit 24a of the light source unit 21a can be identified intuitively visually, erroneous mounting of the light source unit 21a can be easily suppressed.

  In the first embodiment, a plurality of colors for identifying a plurality of lights having different wavelengths are attached to the identification unit 23a. Thereby, different wavelengths of the plurality of lights emitted from the light source unit 24a can be easily identified by the difference in color.

[Second Embodiment]
Next, the configuration of the photoacoustic imaging apparatus 200 (see FIG. 1) according to the second embodiment will be described with reference to FIG. In the photoacoustic imaging apparatus 200 according to the second embodiment, the light emitted from the light source unit 24a is different from the first embodiment in which the identification unit 23a for identifying the wavelength of the light emitted from the light source unit 24a is provided. An example in which an identification unit 223a for identifying the wavelength and energy is provided will be described. In addition, about the structure same as the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

(Detailed configuration of identification unit)
As shown in FIG. 7, the light source unit 221a is provided with an identification unit 223a for the user to identify the wavelength and energy of light emitted from the light source unit 24a. In other words, the identification unit 223a is a label unit (identification label) for the user to identify the wavelength and energy of the light emitted from the light source unit 24a. The example shown in FIG. 7 shows an identification unit 223a arranged in the light source unit 221a configured so that the light source unit 24a emits monochromatic light. The color of the identification unit 223a represents the wavelength of light emitted from the light source unit 24a. For example, blue (blue portion 750) indicating emission light of 750 nm is attached to the identification unit 223a. The identification unit 223a is formed with a first identification shape 240 for identifying the energy of light emitted from the light source unit 24a. The first identification shape 240 is formed by a convex portion, for example. One first identification shape 240 (convex portion) is provided. The first identification shape 240 is formed in a substantially circular shape when viewed from the side. The number of the first identification shapes 240 indicates the energy of light emitted from the light source unit 24a. In the second embodiment, for example, the first identification shape 240 is formed in the identification unit 223a of the light source unit 221a that can emit light of energy of 1 kW. That is, the first identification shape 240 is an identification mark for identifying the light source unit 221a that can emit light of 1 kW energy. The first identification shape 240 is provided approximately at the center of the side surface having the largest area of the identification portion 223a. The light source unit 221a provided with the identification unit 223a is configured to emit light of one kind of wavelength (for example, 750 nm). The first identification shape 240 is an example of the “identification shape” in the claims.

  The light source unit identification unit 23a (see FIG. 11) that emits light of one type of wavelength (for example, 750 nm) and can emit light having an energy other than 1 kW (for example, 500 W) includes a first light source. The identification shapes 240 are not formed (the number of first identification shapes 240 is zero). For this reason, the user touches the first identification shape 240 with a finger (hand) or visually recognizes the first identification shape 240 to identify the presence or absence of the first identification shape 240, whereby the light emitted from the light source unit 221a. It is possible to identify the energy.

  In addition, the other structure of 2nd Embodiment is the same as that of the said 1st Embodiment.

(Effect of 2nd Embodiment)
In the second embodiment, the following effects can be obtained.

  In 2nd Embodiment, the identification part 223a for a user to identify the wavelength and energy of the light radiate | emitted from the light source part 24a is provided in the light source unit 221a as mentioned above. Thereby, similarly to 1st Embodiment, the incorrect mounting | wearing of the light source unit 221a can be suppressed.

  In the second embodiment, the identification unit 223a is provided with a first identification shape 240 for identifying the energy of light emitted from the light source unit 24a. Accordingly, the energy of light emitted from the light source unit 24a of the light source unit 221a can be identified intuitively by touching the first identification shape 240 with a finger (hand) or visually recognizing the first identification shape 240. it can. Thereby, the erroneous mounting | wearing of the light source unit 221a can be suppressed easily.

  The remaining effects of the second embodiment are similar to those of the aforementioned first embodiment.

[Third Embodiment]
Next, the configuration of the photoacoustic imaging apparatus 300 (see FIG. 1) according to the third embodiment will be described with reference to FIGS. In the photoacoustic imaging apparatus 300 according to the third embodiment, the wavelength of light emitted from the light source unit 24a is different from that of the identification unit 23a configured so that the wavelength of light emitted from the light source unit 24a can be identified by color. An example in which the identification unit 323a configured to be identifiable by the identification shape 250 is provided will be described. In addition, about the structure same as the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted. The second identification shape 250 is an example of the “identification shape” in the claims.

(Detailed configuration of identification unit)
As shown in FIGS. 8 and 9, the identification unit 323a is provided for the user to identify the wavelength of light emitted from the light source unit 24a. In other words, the identification unit 323a is a label unit (identification marker) for the user to identify the wavelength of light emitted from the light source unit 24a. Specifically, the identification unit 323a is provided with a second identification shape 250 for identifying the wavelength of light emitted from the light source unit 24a. The second identification shape 250 is provided on the side surface of the identification unit 323a. The 2nd identification shape 250 is provided in the outer surface which consists of the widest surface of the identification part 323a. The 2nd identification shape 250 is formed of the convex part, for example. In the third embodiment, the identification unit 323a is provided with a plurality of second identification shapes 250 for identifying a plurality of lights having different wavelengths (two types of lights having different wavelengths). The second identification shapes 250 are provided in different numbers for each wavelength in order to identify a plurality of lights having different wavelengths. The second identification shape 250 is formed in a substantially circular shape when viewed from the side.

  For example, when the light source part 24a which radiate | emits 750 nm light is arrange | positioned at the light source unit 321a, one 2nd identification shape 250 is provided. When the light source part 24a which radiates | emits 850 nm light is arrange | positioned in the light source unit 321a, the 2nd identification shape 250 is provided in the direction where the rail part 260 mentioned later extends at predetermined intervals. When the light source part 24a which radiates | emits 950 nm light is arrange | positioned at the light source unit 321a, the 3rd 2nd identification shape 250 is provided at predetermined intervals in the direction where the rail part 260 mentioned later extends.

  The identification unit 323a is provided with a number of rail units 260 corresponding to the number of types of light having different wavelengths that can be emitted from the light source unit 24a. For example, one rail portion 260 (that is, only one rail portion 260 is provided on the label portion 323a) is used for one light source portion 24a so that the light source unit 321a can emit light of one wavelength. Is included. The two-wavelength rail portion 260 (that two rail portions 260 are provided) indicates that the light source unit 321a includes two types of light source portions 24a so that two light beams can be emitted. Yes. The rail portions 260 of three wavelengths (that three rail portions 260 are provided) indicate that the light source unit 321a includes three types of light source portions 24a so that three light beams can be emitted. Yes. Further, the second identification shape 250 is arranged on the rail portion 260 (so as to overlap the rail portion 260). The rail portion 260 is formed, for example, in a linear shape extending in the short side direction (direction perpendicular to the Z direction) of the probe main body 20. Specifically, the rail portion 260 is formed to extend in the short direction of the probe main body 20 when the rail portion 260 is viewed from the front.

  The example shown in FIG. 8 is an example showing an identification unit 323a of a light source unit 321a including a light source unit 24a including an LED element that emits 750 nm light and an LED element that emits 850 nm light. The identification unit 323a is provided with one second identification shape 250 on the Z2 side indicating 750 nm emission light and two second identification parts 250 on the Z1 side indicating 850 nm emission light. Further, the wavelength is represented by the number of second identification shapes 250 formed on one rail portion 260. The two rail portions 260 on which the second identification shape 250 indicating the emitted light of 750 nm and the second identification shape 250 indicating the emitted light of 850 nm are respectively arranged are formed to be parallel to each other. The two rail parts 260 are formed in substantially the same length.

  The example shown in FIG. 9 shows an identification unit 323a of a light source unit 321a including a light source unit 24a including an LED element that emits 850 nm light and an LED element that emits 950 nm light. The identification unit 323a is provided with two second identification shapes 250 on the Z2 side that indicate the emitted light of 850 nm and three second identification portions 250 on the Z1 side that indicate the emitted light of 950 nm. The two rail portions 260 on which the second identification shape 250 indicating the emitted light of 850 nm and the second identification shape 250 indicating the emitted light of 950 nm are respectively arranged are formed to be parallel to each other.

  The remaining configuration of the third embodiment is similar to that of the aforementioned first embodiment.

(Effect of the third embodiment)
In the third embodiment, the following effects can be obtained.

  In the third embodiment, as described above, the identification unit 323a is provided in the light source unit 321a so that the user can identify the wavelength of light emitted from the light source unit 24a. Thereby, similarly to 1st Embodiment, the incorrect mounting | wearing of the light source unit 321a can be suppressed.

  Moreover, in 3rd Embodiment, the convex 2nd identification shape 250 for identifying the wavelength of the light radiate | emitted from the light source part 24a is provided. Thereby, the wavelength of the light emitted from the light source unit 24a can be easily identified by touching or visually recognizing the convex second identification shape 250 with a finger (hand).

  In the third embodiment, a different number of second identification shapes 250 are provided for each wavelength in order to identify a plurality of lights having different wavelengths. Thereby, the different wavelengths of the some light radiate | emitted from the light source part 24a can be easily identified by touching the 2nd identification shape 250 with a finger (hand) or visually recognizing the 2nd identification shape 250. FIG.

  In the third embodiment, the identification unit 323a is provided with the number of rail units 260 corresponding to the number of types of light having different wavelengths that can be emitted from the light source unit 24a. Further, the second identification shape 250 is disposed on the rail portion 260. Thereby, by touching or visually recognizing the rail portion 260 with a finger (hand), it is possible to easily identify the number of types of light having different wavelengths emitted from the light source portion 24a. Moreover, the shape of the identification part 23a can be simplified compared with the case where the 2nd identification shape 250 is not arrange | positioned on the rail part 260. FIG.

  The remaining effects of the third embodiment are similar to those of the aforementioned first embodiment.

[Fourth Embodiment]
Next, the configuration of the photoacoustic imaging apparatus 400 (see FIG. 1) according to the fourth embodiment will be described with reference to FIG. In the photoacoustic imaging apparatus 400 according to the fourth embodiment, unlike the third embodiment in which the identification unit 323a for identifying the wavelength of the light emitted from the light source unit 24a is provided, the light emitted from the light source unit 24a. An example in which an identification unit 423a for identifying the wavelength and energy is provided will be described. In addition, about the structure same as the said 3rd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

(Detailed configuration of identification unit)
As shown in FIG. 10, the light source unit 421a is provided with an identification unit 423a for identifying the wavelength and energy of the light emitted from the light source unit 24a. In other words, the identification unit 423a is a label unit (identification label) for the user to identify the wavelength and energy of the light emitted from the light source unit 24a. Specifically, the identification unit 423a is provided with a second identification shape 250 for identifying the wavelength of light emitted from the light source unit 24a.

  For example, the number of the second identification shapes 250 on the rail portion 260 represents the wavelength. For example, when the light source unit 24a that emits only 750 nm light is disposed, one second identification shape 250 is provided for one rail unit 260 (on one rail unit 260). ing. When the light source unit 24 a that emits only 850 nm light is arranged, two second identification shapes 250 may be provided for one rail unit 260. When the light source unit 24 a that emits only 950 nm light is disposed, three second identification shapes 250 may be provided for one rail unit 260.

  In the fourth embodiment, a color for identifying the energy of light emitted from the light source unit 24a is attached to the rail unit 260 in the identification unit 423a. For example, in the case of the light source unit 421a capable of emitting light having an energy of 1 kW, the rail portion 260 is provided with, for example, blue (blue portion 260a). The part other than the rail part 260 of the identification part 423a has a color (white, silver, black, etc.) different from the color of the rail part 260. The 2nd identification shape 250 on the rail part 260 has the same color as the color of parts other than the rail part 260 of the identification part 423a. As a method of coloring the rail portion 260, various methods such as two-color molding and direct coating on the rail portion 260 can be adopted. In the case of the light source unit 421a capable of emitting light with energy of 500 W, the color of the rail portion 260 and the portion other than the rail portion 260 of the identification portion 423a is the same color (white, silver, black, etc.).

  Note that the rail portion 260 is colored on the identification portion 423a of the light source unit 421a that emits light of one type of wavelength (for example, 750 nm) and the emitted light can emit light having energy other than 1 kW (for example, 500 W). It has not been. For this reason, the light source unit 421a that can emit light of energy of 1 kW can be identified by the color (for example, blue (blue portion 260a)) attached to the rail portion 260.

  The remaining configuration of the fourth embodiment is similar to that of the aforementioned third embodiment.

(Effect of 4th Embodiment)
In the fourth embodiment, the following effects can be obtained.

  In the fourth embodiment, as described above, the identification unit 423a is provided in the light source unit 421a and used by the user to identify the wavelength and energy of the light emitted from the light source unit 24a. Thereby, similarly to 3rd Embodiment, the incorrect mounting | wearing of the light source unit 421a can be suppressed, and the image which a user intends can be obtained.

  In the fourth embodiment, a color for identifying the energy of light emitted from the light source unit 24a is given to the identification unit 423a. Thereby, since the energy of light emitted from the light source unit 24a of the light source unit 421a can be identified intuitively visually, erroneous mounting of the light source unit 421a can be easily suppressed.

  The remaining effects of the fourth embodiment are similar to those of the aforementioned third embodiment.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first and third embodiments, an identification unit for identifying the wavelength of light emitted from the light source unit is provided. In the second and fourth embodiments, the wavelength of light emitted from the light source unit. Although an example in which an identification unit for identifying energy is provided is shown, the present invention is not limited to this. In this invention, you may provide the identification part for identifying only the energy of the light radiate | emitted from a light source part.

  In the first embodiment, the identification unit is the cover member (the entire cover member is the identification unit). However, the present invention is not limited to this. In this invention, you may provide an identification part in a part of cover member.

  Moreover, in the said 2nd Embodiment, in order to identify the light source part which can radiate | emit the light of two different wavelengths, the example which attached | subjected two different colors to the identification part was shown, However, This invention is not limited to this. In the present invention, as shown in FIG. 11, when identifying a light source unit capable of emitting light of one wavelength, one color may be given to the identification unit. Further, in the present invention, as shown in FIG. 12, in order to identify light source units that can emit light of three or more different wavelengths, three different colors may be added to the identification unit. At this time, the identification portion can be colored so that the blue portion 750, the green portion 850, and the red portion 950 are aligned in the vertical direction (Z direction). Further, as shown in FIG. 13, the identification portion may be colored so that the blue portion 750, the green portion 850, and the red portion 950 are aligned in a direction perpendicular to the Z direction.

  In the second embodiment, the wavelength of the light emitted from the light source unit is identified by the color, and the energy of the light emitted from the light source unit is identified by the first identification shape. Not limited to. In this invention, you may identify both the wavelength and energy of the light which a light source part radiate | emits with a color.

  In the fourth embodiment, the energy of the light emitted from the light source unit is identified by the color, and the wavelength of the light emitted from the light source unit is identified by the second identification shape (identification shape). The invention is not limited to this. In the present invention, both the wavelength and energy of the light emitted from the light source unit may be identified by the identification shape.

  Moreover, in the said 2nd Embodiment, although the example which formed the 1st identification shape by the convex part was shown, this invention is not limited to this. In the present invention, the first identification shape may be formed by a recess.

  In the second embodiment, an example in which the first identification shape is formed in a substantially circular shape when viewed from the front is shown, but the present invention is not limited to this. In the present invention, the first identification shape may be formed in a shape other than a substantially circular shape (for example, a triangular shape or a rectangular shape).

  In the second embodiment, the example in which one first identification shape is provided in the identification unit to identify the energy of light emitted from the light source unit capable of emitting light of one wavelength is shown. The present invention is not limited to this. In the present invention, as shown in FIG. 14, when identifying the energy of light emitted from a light source unit capable of emitting light of a plurality of (for example, two) wavelengths (energy of light of two wavelengths), One first identification shape may be provided in a portion to which a color for identifying each wavelength is attached. Moreover, you may provide one 1st identification shape in the boundary of the part to which the color which identifies each wavelength was attached | subjected.

  Moreover, in the said 3rd and 4th embodiment, although the example which formed the 2nd identification shape by the convex part was shown, this invention is not limited to this. In the present invention, the second identification shape may be formed by a recess.

  Moreover, in the said 3rd and 4th embodiment, although the 2nd identification shape was seen from the front, the example formed in substantially circle shape was shown, However, This invention is not limited to this. In the present invention, the second identification shape may be formed in a shape other than a substantially circular shape (for example, a triangular shape or a square shape).

  In the third and fourth embodiments, the example in which the number of rail portions corresponding to the number of types of light having different wavelengths that can be emitted from the light source portion is provided, but the present invention is not limited thereto. Absent. In the present invention, the number of grooves corresponding to the number of types of light having different wavelengths that can be emitted from the light source unit may be provided. Further, the number of rail portions and groove portions corresponding to the number of types of light having different wavelengths that can be emitted from the light source unit may not be provided.

  In the first embodiment, when the light source unit can emit light of 750 nm, blue is added, when the light source unit can emit light of 850 nm, green is added, and the light source unit is 950 nm. In the case where light can be emitted, an example in which red is given is shown, but the present invention is not limited to this. In the present invention, the color corresponding to each wavelength may be a different color.

  Moreover, in the said 3rd Embodiment, in order to identify the light source part which can radiate | emit the light of two different wavelengths, the example which provided the 2nd identification shape on each of two rail parts was shown, but this book The invention is not limited to this. In this invention, as shown in FIG. 15, when identifying the light source part which can radiate | emit the light of one wavelength, you may provide a 2nd identification shape on one rail part. Further, in the present invention, as shown in FIG. 16, in order to identify light source units capable of emitting light of three or more different wavelengths, a second identification shape may be provided on each of the three rail units. Good.

  In the third embodiment, when the light source unit can emit 750 nm light, one second identification shape is provided, and when the light source unit can emit 850 nm light, the second identification shape is set to 2. In the example of FIG. 16, when the light source unit can emit light having a wavelength of 950 nm, three second identification shapes are provided. However, the present invention is not limited to this. In the present invention, the number of second identification shapes corresponding to each wavelength may be changed.

  In the fourth embodiment, an example in which blue (blue portion 260a) is added to the rail portion in order to identify the energy of the light emitted from the light source that can emit light of one wavelength is shown. The invention is not limited to this. In the present invention, as shown in FIG. 17, when identifying the energy of light having a plurality of (for example, two) wavelengths (energy of light having two wavelengths), each of the plurality of rail portions is blue (blue portion). 260a) may be added.

  In the third and fourth embodiments, the rail part is formed so as to extend in the short direction (direction perpendicular to the Z direction) of the probe body when the rail part is viewed from the front. The invention is not limited to this. In the present invention, the rail portion may be formed to extend in a direction other than the short direction of the probe body, such as the longitudinal direction of the probe body.

20 Probe body 20a Detection unit 21, 21a, 221a, 321a, 421a Light source unit 23, 23a, 223a, 323a, 423a Cover member (identification unit)
24, 24a, 24b Light source unit 100, 200, 300, 400 Photoacoustic imaging device 240 First identification shape (identification shape)
250 Second identification shape (identification shape)
260 Rail part

Claims (11)

A light source unit including a light source unit for irradiating the subject with light;
A probe main body configured to include a detection unit that detects an acoustic wave generated from a detection target in the subject that has absorbed light emitted from the light source unit, and to which the light source unit is detachable; ,
A photoacoustic provided in the light source unit and comprising an identification unit for identifying at least one of the wavelength of light emitted from the light source unit or the energy of light emitted from the light source unit. Imaging device.   The photoacoustic imaging apparatus according to claim 1, wherein the identification unit is provided in a portion exposed to the outside of the light source unit. The light source unit includes a cover member that covers the light source unit,
The photoacoustic imaging apparatus according to claim 1, wherein the identification unit is formed integrally with the cover member.   The color for identifying at least one among the wavelength of the light radiate | emitted from the said light source part, or the energy of the light radiate | emitted from the said light source part is attached | subjected to the said identification part. The photoacoustic imaging apparatus of any one of these.   The photoacoustic imaging apparatus according to claim 4, wherein the identification unit is provided with a color for identifying a wavelength of light emitted from the light source unit. The light source unit is configured to be capable of emitting a plurality of lights having different wavelengths,
The photoacoustic imaging apparatus according to claim 5, wherein the identification unit is provided with a plurality of colors for identifying a plurality of lights having different wavelengths.   The said identification part contains the identification shape for identifying at least one among the wavelength of the light radiate | emitted from the said light source part, or the energy of the light radiate | emitted from the said light source part. The photoacoustic imaging apparatus according to item 1.   The photoacoustic imaging apparatus according to claim 7, wherein the identification shape includes a convex or concave first identification shape for identifying energy of light emitted from the light source unit.   The photoacoustic imaging apparatus according to claim 7, wherein the identification shape includes a convex or concave second identification shape for identifying a wavelength of light emitted from the light source unit. The light source unit is configured to be capable of emitting a plurality of lights having different wavelengths,
The photoacoustic imaging apparatus according to claim 9, wherein the second identification shapes are provided in different numbers for each wavelength in order to identify a plurality of lights having different wavelengths. The identification unit includes a number of rail portions or groove portions corresponding to the number of types of light having different wavelengths that can be emitted by the light source unit,
The photoacoustic imaging apparatus according to claim 10, wherein the identification shape is disposed on the rail part or the groove part.

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