Ultrasonic device

Abstract

To provide an ultrasonic device that allows a measurement site in a living body to be determined easily by a simple configuration.SOLUTION: An ultrasonic device includes: an ultrasonic sensor for transmitting an ultrasonic wave to the inside of a living body and receiving the ultrasonic wave reflected inside the living body; and a housing having a window part through which the ultrasonic wave passes and storing the ultrasonic wave inside. The housing includes a reference position indication part and a measurement position indication part. The measurement position indication part indicates a measurement site on the body surface of the living body when the reference position indication part is superposed on a specific site on the body surface of the living body.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an ultrasonic device.

Background Art

[0002] Conventionally, an ultrasonic device that measures muscle thickness and fat thickness using ultrasonic waves has been known (see, for example, Patent Document 1). In the measuring device (ultrasonic device) described in Patent Document 1, an ultrasonic probe that transmits and receives ultrasonic waves and reference position means for positioning the ultrasonic probe at a predetermined position of a living body are provided on one surface facing the living body. In this device, the reference position means is a protrusion provided on the same surface as the ultrasonic probe, and by aligning the protrusion with the navel position of the living body, the ultrasonic probe can be positioned at a predetermined part of the living body. That is, when repeatedly performing ultrasonic measurement at the same position over time to observe the temporal change of the tissue of the living body, it is possible to position the contact position of the ultrasonic probe at the same position every time.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the ultrasonic device of Patent Document 1, it is possible to install the ultrasonic device at the same position of the living body, but it is necessary to separately provide reference position means constituted by protrusions on the surface where the ultrasonic probe is provided. For this reason, the configuration of the ultrasonic device becomes complicated and miniaturization is also difficult. Further, when it is desired to specify a plurality of locations on the living body as measurement sites, it is necessary to provide reference position means corresponding to these measurement sites, and providing a plurality of reference position means further complicates the configuration and increases the size of the device.

Means for Solving the Problems

[0005] The ultrasonic device according to the first aspect of the present disclosure includes an ultrasonic sensor that transmits ultrasonic waves into a living body and receives the ultrasonic waves reflected inside the living body, and a housing that has a window portion through which the ultrasonic waves pass and houses the ultrasonic waves therein. The housing includes a reference position indicator and a measurement position indicator. When the reference position indicator is superimposed on a specific part on the body surface of the living body, the measurement position indicator indicates a measurement part on the body surface of the living body.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0007] Hereinafter, an embodiment of the present disclosure will be described. FIG. 1 is a plan view showing a schematic configuration of the ultrasonic device of the present embodiment. The ultrasonic device 10 includes an ultrasonic sensor 20 and a housing 30.

[0008] [Configuration of Ultrasonic Sensor 20] The ultrasonic sensor 20 is a transmitting and receiving unit that transmits ultrasonic waves to a living body and receives the ultrasonic waves reflected inside the living body. The ultrasonic sensor 20 is not particularly limited as long as it can perform ultrasonic wave transmitting and receiving processing on a living body. For example, a bulk type ultrasonic element that transmits ultrasonic waves by vibrating a piezoelectric body itself by applying a voltage to the piezoelectric body and detects a reflected wave by a received signal output by the distortion of the piezoelectric body itself due to the reflected wave may be used. Alternatively, a thin-film type ultrasonic element may be used, in which a plurality of ultrasonic transducers having piezoelectric elements arranged on thin-film vibration parts are arranged in an array, and ultrasonic waves are transmitted by vibrating each vibration part by applying a voltage to the piezoelectric element. In such a thin-film type ultrasonic element, a received signal is output from the piezoelectric element when the vibration film is vibrated by the reflected wave.

[0009] When the ultrasonic sensor 20 receives a reflected wave from a living body, it outputs a received signal having a signal value corresponding to the sound pressure of the received ultrasonic wave. Here, in the present embodiment, the ultrasonic sensor 20 continues to receive the reflected wave for a predetermined period from the ultrasonic transmission timing. Therefore, a received signal including a change in the signal value along the time series output from the ultrasonic sensor 20 is obtained, and the received signal is output to a measurement main body part (not shown).

[0010] The measurement main body part is a device communicably connected to the ultrasonic device 10 by wire or wirelessly, and is constituted by, for example, a computer such as a smartphone, a tablet terminal, or a personal computer. In the present embodiment, although detailed description is omitted, the measurement main body part receives the received signal from the ultrasonic device 10 and performs various processes based on the received signal. Examples of the various processes include measurement of the thickness of a predetermined tissue (such as muscle or fat) in a living body, recording of the change in the thickness over time, and generation of an internal tomographic image of the living body based on the received signal from the ultrasonic sensor 20.

[0011] [Configuration of the housing 30] The housing 30 houses the ultrasonic sensor 20 inside. Specifically, the housing 30 includes a window portion 31, and the ultrasonic transmission / reception surface 20A of the ultrasonic sensor 20 is arranged on the window portion 31. Note that an acoustic matching layer, an acoustic lens, or the like that also functions as protection for the transmission / reception surface 20A may be provided on the window portion 31. Although not shown, inside the housing 30, there are also housed a drive control circuit that controls the drive of the ultrasonic sensor 20, a communication unit that communicates with the measurement main body part, a battery that supplies power to each component, and the like.

[0012] More specifically, as shown in FIG. 1, the housing 30 includes a main body portion 32 that is substantially rectangular in plan view, and a probe portion 33 provided on one end side of the main body portion 32. The main body portion 32 houses a drive control circuit, a communication unit, a battery, and the like.

[0013] As described above, the main body portion 32 is a case that is substantially rectangular in plan view when viewed from one direction. However, as shown in FIG. 1, one end surface on the side opposite to the probe portion 33 is a curved surface 321 that is concave and curved in the direction toward the probe portion 33. Further, a strap hole 322 to which a strap or the like can be engaged is provided at one of the four corner portions of the housing 30. Here, in the present embodiment, the curved surface 321 constitutes one of the reference position indicating portions in the present disclosure, and the strap hole 322 constitutes one of the measurement position indicating portions. That is, the curved surface 321 is a part of the housing 30 and functions as a reference position indicating portion. The strap hole 322 is a part of the housing 30 and functions as one of the measurement position indicating portions.

[0014] Further, a reference position mark 323 is provided at a predetermined position on the main body portion 32 of the housing 30. The reference position mark 323 is provided, for example, at the centroid position of one surface (display surface 32A) of the housing 30 in plan view when the housing 30 as shown in FIG. 1 is viewed from a predetermined direction. Although details will be described later, the reference position mark 323 is a mark indicating a reference position when determining a measurement site for performing ultrasonic measurement, and is provided by printing, embossing, or the like. This reference position mark 323 becomes one of the reference position indicating portions of the present disclosure.

[0015] The probe portion 33 is provided on one end side of the main body portion 32 and protrudes on the side away from the main body portion 32. The above-described window portion 31 is provided at the protruding tip of the probe portion 33. An ultrasonic sensor 20 is housed inside the probe portion 33, and the ultrasonic transmission / reception surface 20A of the ultrasonic sensor 20 is exposed to the outside from the window portion 31. Note that, as described above, the configuration is not limited to the configuration in which the transmission / reception surface 20A is exposed from the window portion 31, and a configuration in which the transmission / reception surface 20A is protected by an acoustic matching layer or the like may be employed. Furthermore, the probe section 33 is provided with a measurement position mark 331, which constitutes a measurement position indicator when performing ultrasonic measurement, by printing, embossing, or the like. The measurement position mark 331 is a mark that indicates a part of the outer edge of the housing 30 in a plan view of the housing 30 seen from a predetermined direction as shown in Fig. 1. In other words, it is a mark that indicates a part of the boundary between the housing 30 and the living body when the housing 30 is brought into contact with the body surface of the living body and viewed from the housing 30 toward the living body.

[0016] Furthermore, in this embodiment, a correspondence display section showing a combination of the reference position indicator and the measurement position indicator is provided on the housing 30. For example, the strap hole 322, which is the measurement position indicator, is associated with the reference position mark 323, which is the reference position indicator, and a correspondence mark 324A is provided as a correspondence display section showing this. Further, a measurement position mark 331, which is a measurement position indicator, is associated with the curved surface 321, which is a reference position indicator, and a corresponding mark 324B is provided as a corresponding display portion indicating this. These corresponding marks 324A, 324B are provided on the housing 30 by printing, embossing, or the like.

[0017] In addition, a direction teaching unit 325 may be further provided as the corresponding marks 324A, 324B, which teaches the tilt direction of the housing 30 when the housing 30 is abutted against the living body so that the reference position indicating unit (the reference position mark 323 or the curved surface 321) is overlapped with a specific part. For example, in the example shown in Figure 1, when a living body (human body) is standing, horizontal teaching lines 325A, 325B are provided to indicate the orientation of the housing 30 when the housing 30 is abutted against the living body so that the reference position indicating portion is overlapped with a specific part.

[0018] [How to determine the measurement site for ultrasonic measurement] Next, a method for determining the position (measurement site) at which the ultrasound device 10 is to be installed on the living body will be described. By using the ultrasonic device 10 of the present embodiment, ultrasonic measurement at a predetermined measurement site of a living body can be continuously and repeatedly performed, and changes in tissues within the living body can be observed. For example, a case of measuring (observing the progress) the change over time in the thickness of a predetermined tissue (such as muscle or fat) within the living body will be described. The user performs ultrasonic measurement by bringing the ultrasonic device 10 into contact with the measurement site corresponding to the tissue. In order to perform the progress observation, it is necessary to perform ultrasonic measurement by bringing the ultrasonic device 10 into contact with the same measurement site at a predetermined cycle (for example, every other day, every other week, etc.). At this time, if the ultrasonic device 10 is brought into contact with different positions for each measurement, correct progress observation of the target tissue cannot be performed, so it is necessary to bring the ultrasonic device 10 into contact with the same position for each measurement. In the present embodiment, in order to specify the measurement site, without using a separate configuration for positioning in the ultrasonic device 10, a part of the housing 30 is used to specify the measurement site. Hereinafter, as an example, a method for determining the measurement site when observing the progress of the rectus abdominis muscle and the quadriceps femoris muscle will be described.

[0019] FIG. 2 is a diagram showing an example when determining a measurement site using the ultrasonic device 10 of the present embodiment, and is an explanatory diagram for explaining a method for determining the measurement site of the rectus abdominis muscle. When measuring the rectus abdominis muscle using the ultrasonic device 10 of the present embodiment, the measurement site is determined by the reference position mark 323 and the strap hole 322 associated with the corresponding mark 324A. As described above, the reference position mark 323 is provided on the housing 30 by printing, embossing, or the like, and the strap hole 322 is provided at one of the four corners of the housing 30. Here, the distance between the reference position mark 323 and the strap hole 322 is set to a general distance from the navel to the rectus abdominis muscle. As a general distance, for example, the average value of the distance between the abdominal position directly above the rectus abdominis muscle and the navel position can be exemplified. Further, the ultrasonic device 10 may be divided into those for adult males, adult females, children, etc., and the distance between the reference position mark 323 and the strap hole 322 may be determined corresponding to each. In this embodiment, the user places the display surface 32A on which the reference position mark 323 of the housing 30 is displayed on the front side, and brings the back surface into contact with the abdomen (see Fig. 2). At this time, the housing 30 is brought into contact such that the reference position mark 323 is located at the navel position and the horizontal indication line 325A is horizontal (when the person to be measured is standing). Then, the user marks the body surface of the living body corresponding to the position of the strap hole 322, and determines the marked position as the measurement position of the rectus abdominis muscle. After that, the ultrasonic device 10 is brought into contact with the marked position to perform ultrasonic measurement. Thereafter, by performing the same procedure when measuring the rectus abdominis muscle, it is possible to perform a follow-up observation of the same position of the rectus abdominis muscle.

[0020] Fig. 3 is a diagram showing another example of determining a measurement site using the ultrasonic device 10 of this embodiment, and is an explanatory diagram for explaining a method of determining a measurement site of the quadriceps femoris muscle. When measuring the quadriceps femoris muscle using the ultrasonic device 10 of this embodiment, the measurement site is determined by the curved surface 321 associated with the corresponding mark 324B and the measurement position mark 331. As described above, the curved surface 321 is one end surface of the housing 30, and the measurement position mark 331 is provided on the probe portion 33 of the housing 30. Here, the distance from the curved surface 321 to the measurement position mark 331 is set to a general distance from the upper edge of the patella to the quadriceps femoris muscle. As described above, the ultrasonic device 10 may be divided into those for adult males, adult females, children, etc., and the distance from the curved surface 321 to the measurement position mark 331 may be determined corresponding to each. In this embodiment, the user places the display surface 32A on which the measurement position mark 331 of the housing 30 is displayed on the front side, and brings the back surface into contact with the thigh (see Fig. 3). At this time, the housing 30 is brought into contact such that the curved surface 321 is arranged along the upper edge of the patella and the horizontal indication line 325B is horizontal (when the person to be measured is standing). Then, the user marks the body surface of the living body corresponding to the position of the measurement position mark 331, and determines the marked position as the measurement position of the quadriceps femoris muscle. After that, the ultrasonic device 10 is brought into contact with the marked position to perform ultrasonic measurement. Thereafter, by performing the same procedure as when measuring the thigh muscle, it is possible to perform follow-up observation of the same position of the thigh muscle.

[0021] [Operation and Effect of this Embodiment] The ultrasonic device 10 of this embodiment includes an ultrasonic sensor 20 and a housing 30 that houses the ultrasonic sensor 20. The ultrasonic sensor 20 transmits ultrasonic waves into the living body and receives the ultrasonic waves reflected inside the living body. The housing 30 has a window portion 31 through which ultrasonic waves pass, and includes a reference position mark 323 and a curved surface 321 that are reference position indicating portions, and a strap hole 322 and a measurement position mark 331 that are measurement position indicating portions. And, when the strap hole 322 and the measurement position mark 331, which are measurement position indicating portions, are overlapped with the reference position mark 323 and the curved surface 321, which are reference position indicating portions, on a specific part of the body surface of the living body, they indicate the measurement part on the body surface of the living body. That is, the distance between the reference position indicating portion and the measurement position indicating portion is the general average distance between a specific part (for example, the umbilical position or the upper edge of the patella) in the living body and a desired measurement part (for example, the position corresponding to the rectus abdominis muscle or the position corresponding to the thigh muscle). Therefore, the user can easily recognize the position of the measurement position indicating portion as the measurement part by overlapping the reference position indicating portion on the specific part. By marking that position, the user can bring the ultrasonic device 10 into contact with the same position every time ultrasonic measurement is performed, and can suitably perform tissue observation in the living body. Further, in this embodiment, since a part of the housing 30 is used as the reference position indicating portion or the measurement position indicating portion, it is not necessary to separately provide teaching means for teaching the measurement part. Therefore, it is possible to suppress complication and enlargement of the configuration of the ultrasonic device 10, and the measurement part can be determined with a simple configuration. Also, a measuring instrument, a jig, etc. can be made unnecessary.

[0022] In this embodiment, as the reference position indicating portion, a mark image (reference position mark 323) displayed on the outer surface of the housing 30 or a curved surface 321 that is a part of the shape of the housing 30 is used. The reference position mark 323 is a mark displayed on the housing 30 by printing, embossing, or the like, and does not incorporate a separate special structure as a reference position indicating portion. Similarly, the curved surface 321 is a part of the configuration of the housing 30 and does not incorporate a separate special structure as a reference position indicating portion. Thus, as described above, the configuration can be simplified compared to the case where teaching means of a separate configuration or the like is provided.

[0023] In the present embodiment, as the measurement position indicating portion, there are a measurement position mark 331 that indicates a part of the boundary between the housing 30 and the living body when the housing 30 is brought into contact with the body surface of the living body and viewed from the housing 30 toward the living body, and a strap hole 322 that is a corner portion of the housing 30. The measurement position mark 331 is a mark displayed on the housing 30 by printing, embossing, or the like, and does not incorporate a separate special structure as a measurement position indicating portion. Similarly, the strap hole 322 is one of the four corners that is a part of the housing 30 and does not incorporate a separate special structure as a measurement position indicating portion. Thus, as described above, the configuration can be simplified compared to the case where positioning means of a separate configuration is provided. Further, since the measurement position indicating portion is a part of the boundary between the living body and the housing 30 when the housing 30 is brought into contact with the living body, it is easy to mark the portion indicated by the measurement position indicating portion on the body surface of the living body, and the inconvenience of losing the specified measurement site can also be suppressed. In the present embodiment, the strap hole 322 is provided at one of the four corners of the housing 30, but the strap hole 322 may not be provided. In this case, a measurement position mark indicating one of the four corners of the housing 30 may be provided.

[0024] In the present embodiment, a plurality of measurement position indicating portions are provided on the housing 30 corresponding to different measurement sites of the living body, and a reference position indicating portion is provided corresponding to each of the plurality of measurement position indicating portions. For example, the reference position mark 323 is provided for the strap hole 322 corresponding to the measurement of the rectus abdominis muscle, and the curved surface 321 is provided for the measurement position mark 331 corresponding to the measurement of the thigh muscle. Thus, in the present embodiment, whether it is desired to observe the rectus abdominis muscle or the femoral muscle through ultrasonic measurement, the measurement can be carried out using the same ultrasonic device 10. In the present embodiment, the rectus abdominis muscle and the femoral muscle are taken as examples, but other parts of the housing 30 may be used as the measurement position indicating portion or the reference position indicating portion in order to set measurement sites corresponding to other tissues. In any case, a plurality of measurement sites can be easily determined with one ultrasonic device 10.

[0025] In the present embodiment, with regard to the determination of the measurement site corresponding to the rectus abdominis muscle, a correspondence mark 324A (corresponding display portion), which shows the correspondence relationship between the reference position mark 323 as the reference position indicating portion and the strap hole 322 as the measurement position indicating portion corresponding to the reference position mark 323, is further provided. Similarly, with regard to the determination of the measurement site corresponding to the femoral muscle, a correspondence mark 324B (corresponding display portion), which shows the correspondence relationship between the curved surface 321 as the reference position indicating portion and the measurement position mark 331 as the measurement position indicating portion corresponding to the curved surface 321, is further provided. Thereby, when the user installs the ultrasonic device 10 such that the reference position indicating portion overlaps a specific part of the living body, the user can easily confirm which position of the housing 30 should be determined as the measurement site.

[0026] [Modification Example] Note that the present invention is not limited to the above-described embodiments, and configurations obtained by deformation, improvement, and appropriate combination of each embodiment within the scope capable of achieving the object of the present invention are included in the present invention.

[0027] (Modification Example 1) In the above embodiment, the reference position mark 323 and the curved surface 321 are exemplified as the reference position indicating portion, but other parts may be used. For example, with regard to the determination of the measurement site corresponding to the rectus abdominis muscle, when the ultrasonic device 10 is brought into contact with the body surface of the living body, a part of the boundary between the housing 30 and the living body when viewed from the ultrasonic device 10 side may be used as the measurement position indicating portion.

[0028] Also, only one reference position indicator may be provided. For example, only the reference position mark 323 may be provided, and a plurality of measurement position indicators may be provided with respect to the reference position mark 323. For example, as the measurement position indicator when measuring the rectus abdominis muscle, one of the four corners of the housing 30, the strap hole 322, may be used, and the measurement position mark 331 may be used as the measurement position indicator when measuring the pectoralis muscle. In this case, in the measurement of the pectoralis muscle, the reference position mark 323 is arranged so as to overlap the side part.

[0029] [Modification Example 2] Although the strap hole 322 and the measurement position mark 331 are exemplified as the measurement position indicators, other parts may also be used. Also, even when the ultrasonic device 10 corresponds to a plurality of measurement parts, only one measurement position indicator may be provided, and a plurality of reference position indicators may be provided corresponding to each of the measurement parts.

[0030] [Modification Example 3] In the above embodiment, an example is shown in which the horizontal instruction lines 325A and 325B are provided on the housing 30 as the direction instruction unit 325, and the housing 30 is brought into contact so that the horizontal instruction lines 325A and 325B are in the horizontal direction with the reference position indicator overlapped with a specific part. However, the present invention is not limited to this. For example, as the direction instruction unit 325, a vertical instruction line indicating the vertical direction may be provided. In this case, the housing 30 is brought into contact so that the vertical instruction line is in the vertical direction with the reference position indicator overlapped with a specific part.

[0031] [Modification Example 4] In the above embodiment, an example is shown in which the measurement main body part is configured separately from the ultrasonic device 10. However, an arithmetic circuit part may be provided in the housing 30 of the ultrasonic device 10, and the arithmetic circuit part may function as the measurement main body part. In this case, the ultrasonic device 10 may perform various processes and output the processing results to a display or other terminal devices.

[0032] Alternatively, the configuration may be such that the display at the output destination is separately provided in the housing 30. In this case, a display may be provided on the display surface 32A of the housing 30, and measurement position marks 331, reference position marks 323, corresponding marks 324A and 324B, horizontal instruction lines 325A and 325B, etc., which will be described later, may be displayed on the display. In this configuration, the user may be allowed to select a measurement site to be measured, and a function may be provided to display only the measurement position indicator, the reference position indicator, and the horizontal instruction line (direction instruction part) corresponding to the selected measurement site.

[0033] [Summary of the present disclosure] The ultrasonic device according to the first aspect of the present disclosure includes an ultrasonic sensor that transmits ultrasonic waves into the interior of a living body and receives the ultrasonic waves reflected inside the living body, and a housing that has a window portion through which the ultrasonic waves pass and houses the ultrasonic waves therein. The housing includes a reference position indicator and a measurement position indicator. The measurement position indicator indicates a measurement site on the body surface of the living body when the reference position indicator is superimposed on a specific site on the body surface of the living body.

[0034] Thereby, the user can easily recognize the position of the measurement position indicator as the measurement site by superimposing the reference position indicator on a specific site of the living body without using a dedicated jig or measuring tool. In addition, since a part of the housing is used as the reference position indicator or the measurement position indicator, there is no need to separately provide an instruction means for instructing the measurement site, and the complication and enlargement of the configuration of the ultrasonic device can be suppressed, and the measurement site can be determined with a simple configuration.

[0035] In the ultrasonic device of this aspect, it is preferable that the reference position indicator is a mark image displayed on the exterior surface of the housing or a part of the shape of the housing. Thereby, compared with the case of providing an instruction means of a separate configuration for determining the measurement site, the configuration can be simplified.

[0036] In the ultrasonic device of this aspect, it is preferable that the measurement position indicating portion is a part of the boundary between the housing and the living body or a corner portion of the housing when the housing is brought into contact with the body surface of the living body and viewed from the housing toward the living body. Thereby, compared with the case where a teaching means of a separate configuration for determining a measurement site is provided, the configuration can be simplified. Further, since the measurement position indicating portion is a part of the boundary between the living body and the housing when the housing 30 is brought into contact with the living body, it is easy to perform marking on the portion indicated by the measurement position indicating portion on the body surface of the living body, and the inconvenience of losing the specified measurement site can be suppressed.

[0037] In the ultrasonic device of this aspect, it is preferable that the housing includes a plurality of the measurement position indicating portions corresponding to different measurement sites of the living body. Thereby, a plurality of measurement sites can be determined with one ultrasonic device. Therefore, for example, compared with the case of using a jig for the rectus abdominis muscle, a jig for the quadriceps femoris muscle, etc., the determination of the measurement site can be made more easily.

[0038] In the ultrasonic device of this aspect, it is preferable that the housing includes a plurality of the reference position indicating portions corresponding to each of the plurality of the measurement position indicating portions. Thereby, a plurality of measurement sites can be determined with the housing of one ultrasonic device.

[0039] In the ultrasonic device of this aspect, it is preferable that a correspondence display portion for indicating the correspondence relationship between one of the reference position indicating portions and one of the measurement position indicating portions corresponding to the one reference position indicating portion is further provided. Thereby, even when a plurality of measurement position indicating portions are provided in the housing or when a plurality of reference position indicating portions corresponding to the plurality of measurement position indicating portions are provided, the correspondence relationship can be easily visually recognized by the user, and the inconvenience of setting the measurement site incorrectly can be suppressed.

Explanation of Signs

[0040] 10…Ultrasonic device, 20…Ultrasonic sensor, 20A…Transmission / reception surface, 30…Housing, 30A…Display surface, 31…Window portion, 32…Main body portion, 33…Probe portion, 50…Measurement main body portion, 321…Curved surface (reference position indicating portion), 322…Strap hole (measurement position indicating portion), 323…Reference position mark (reference position indicating portion), 324A, 324B…Corresponding mark (corresponding display portion), 325…Direction instruction portion, 325A…Horizontal instruction line, 325B…Horizontal instruction line, 331…Measurement position mark (measurement position indicating portion).

Claims

1. An ultrasonic sensor that transmits ultrasonic waves into a living body and receives the ultrasonic waves reflected inside the living body, A housing that has a window portion through which the ultrasonic waves pass and houses the ultrasonic waves inside, The housing includes a reference position indicator and a measurement position indicator, When the reference position indicator is superimposed on a specific part on the body surface of the living body, the measurement position indicator indicates a measurement part on the body surface of the living body, An ultrasonic device.

2. The reference position indicator is a mark image displayed on the outer surface of the housing or a part of the shape of the housing, The ultrasonic device according to Claim 1.

3. The measurement position indicator is a part of the boundary between the housing and the living body or a corner of the housing when the housing is in contact with the body surface of the living body and viewed from the housing toward the living body, The ultrasonic device according to Claim 1.

4. The housing includes a plurality of the measurement position indicators corresponding to different measurement parts of the living body, The ultrasonic device according to Claim 1.

5. The housing includes a plurality of the reference position indicators corresponding to each of the plurality of the measurement position indicators, The ultrasonic device according to Claim 4.

6. A correspondence display unit for indicating the correspondence relationship between one of the reference position indicators and one of the measurement position indicators corresponding to the one reference position indicator is further provided, The ultrasonic device according to Claim 5.

Images