JP3785260B2 - Ultrasound bone diagnostic device - Google Patents

Ultrasound bone diagnostic device Download PDF

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Publication number
JP3785260B2
JP3785260B2 JP28627397A JP28627397A JP3785260B2 JP 3785260 B2 JP3785260 B2 JP 3785260B2 JP 28627397 A JP28627397 A JP 28627397A JP 28627397 A JP28627397 A JP 28627397A JP 3785260 B2 JP3785260 B2 JP 3785260B2
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Japan
Prior art keywords
ultrasonic
subject
matching material
material container
diagnostic apparatus
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Expired - Fee Related
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JP28627397A
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Japanese (ja)
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JPH11104131A (en
Inventor
博 福喜多
森雄 西垣
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松下電器産業株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultrasonic diagnostic apparatus, and more particularly to an ultrasonic bone diagnostic apparatus for obtaining useful information regarding bone quality used for diagnosis of bone diseases.
[0002]
[Prior art]
Conventionally, in order to diagnose bone diseases including osteoporosis, an ultrasonic bone diagnostic method for evaluating bone quality by transmitting ultrasonic waves into bones and measuring sound speed and attenuation in the bones is already known. Yes. The ribs are usually used for measuring bone quality by ultrasound.
[0003]
Conventionally, a method as shown in FIG. 1 has been adopted as a method for measuring ribs using an ultrasonic bone diagnostic apparatus. FIG. 1 is a diagram showing an overall basic configuration of a conventional ultrasonic bone diagnostic apparatus for rib measurement.
First, the configuration of an ultrasonic bone diagnostic apparatus for rib measurement will be described with reference to FIG. In FIG. 1, reference numerals 1 and 2 denote vibrators for transmitting and receiving ultrasonic pulses, 11 a foot, 3 a rib for measuring bone quality in the foot 11, both vibrators 1 and vibrations. The foot 11 of the subject having the rib 3 is inserted between the child 2 and the transducer 1 and the matching material for easily transmitting ultrasonic waves between the transducer 2 and the foot 11 (see FIG. 1) is used. This matching material will be described later.
[0004]
Reference numeral 4 denotes a transmission switch for selecting one of the vibrators 1 and 2 for transmitting a transmission pulse to the vibrator 1 or the vibrator 2, and reference numeral 5 denotes a vibration for receiving an echo signal from the vibrator 1 or the vibrator 2. A reception switch for selecting one of the children 1 and 2, a transmission pulse generation circuit 6 for generating a transmission pulse for generating an ultrasonic pulse from the transducers 1 and 2 selected by the switch 4, and 7 for an ultrasonic bone A timing circuit for controlling the measurement timing of the diagnostic device, 8 is a receiving amplifier for receiving and amplifying the echo signals of the vibrators 1 and 2 selected by the switch 5, and 9 is an A / D converter for quantizing the echo signals. Including the calculation of the speed of sound and attenuation of the ultrasonic pulse transmitted from the vibrators 1 and 2 based on the timing signal generated by the timing circuit 7 and the echo signal received from the receiving amplifier 8. Circuit, 10 is a display for displaying the results of measurement and calculation.
[0005]
Next, with reference to FIG. 1, the operation | movement procedure of the ultrasonic bone diagnostic apparatus for a rib measurement is demonstrated.
First, the width of the rib 3 is measured first. First, both the transmission switch 4 and the reception switch 5 are connected to the a side, and transmission and reception are performed by the vibrator 1. Thereby, the propagation time required for reciprocation from the vibrator 1 to the surface of the rib 3 is obtained, and the propagation time is converted into a distance.
[0006]
Next, the transmission switch 4 and the reception switch 5 are both connected to the b side so that transmission and reception are performed by the vibrator 2. Thereby, the propagation time required for reciprocation from the vibrator 2 to the surface of the rib 3 is obtained, and the propagation time is converted into a distance.
Here, the transmission switch 4 is connected to a and the reception switch 5 is connected to b, and transmission is performed by the vibrator 1 and reception is performed by the vibrator 2. The switch may be set by connecting the transmission switch 4 to b and the switch 5 to a. In this case, the vibrator 2 is on the transmission side and the vibrator 1 is on the reception side. Thereby, the propagation time of the ultrasonic pulse between the vibrator 1 and the vibrator 2 through the rib 3 is obtained, and the propagation time is converted into a distance.
[0007]
The width of the rib 3 is obtained by subtracting the distance between the vibrator 1 and the rib 3 and the distance between the vibrator 2 and the rib 3 from the distance between the vibrator 1 and the vibrator 2. .
Further, since the propagation time from the vibrator 1 to the surface of the rib 3 and from the vibrator 2 to the surface of the rib 3 has already been measured, the time required to penetrate the rib 3 is obtained, The sound speed of the ribs is calculated along with the rib width data.
Further, by analyzing the frequency component of the echo signal transmitted through the rib 3 and comparing it with the characteristic without the rib, the attenuation characteristic of the rib is obtained.
These calculations are performed by the calculation circuit 9 and the result is displayed on the display 10 and used for diagnosis.
[0008]
The basic rib diagnosis method using the ultrasonic bone diagnostic apparatus has been described above. In an actual bone diagnostic apparatus or diagnostic procedure, the propagation of ultrasonic waves between the vibrator 1 and the vibrator 2 and the foot 11 is performed. Alternatively, a matching material is used between the vibrator 1 and the vibrator 2 and the foot 11 in order to facilitate transmission. As an aligning material, for example, there is a material using water as disclosed in JP-A-6-509736. In this method, vibrators are provided at both ends of a water tank, and a test portion (foot) is filled therein to fill water and facilitate transmission of ultrasonic waves. This is generally called wet. In this method, it is necessary to immerse the vicinity of the foot of the foot in water, and it is necessary to change the water every time the subject changes to prevent infection.
[0009]
On the other hand, a system that does not use water as disclosed in JP-A-6-339478 has been developed. This is generally called dry. In this method, a jelly-like substance wrapped in vinyl or the like that does not hinder the propagation of ultrasonic waves is attached to the surface of the vibrator, and this facilitates the transmission of ultrasonic waves by sandwiching the test part. is there. In many cases, a gel used in general ultrasonic examination is applied to the surface of the jelly-like substance in order to further improve the propagation of the ultrasonic wave at the contact portion with the tarsal.
[0010]
To obtain accurate data with good reproducibility, it is important to accurately position the probe against the rib. Several methods have been described for determining the position. In a wet apparatus, as disclosed in, for example, Japanese Patent Laid-Open No. 2-104337, the transducer for transmitting and receiving is moved up and down and back and forth, and adjacent to the region where the attenuation is greatest, the ultrasonic attenuation of the bone Alternatively, a point where the sound speed is locally minimum is found, and this point is determined as a measurement position. Further, as disclosed in Japanese Patent Application Laid-Open No. 6-339478, a dry type apparatus is usually a method of obtaining data for only one point after making a simple adjustment in accordance with the size of the foot.
[0011]
[Problems to be solved by the invention]
As described above, there are two types of ultrasonic bone diagnostic devices, wet and dry. However, as described above, it is cumbersome to change the water every time the subject changes, so it is necessary to wet the tarsal recently. Dry-type devices that are easy to handle and are easy to handle are becoming widespread.
[0012]
However, in order to obtain data with good reproducibility, two-dimensional data is obtained by shifting the observation position up and down and back and forth as in the above-described wet device, measuring points are determined from the tendency of the distribution, and data specific to the subject is obtained. Need to ask. However, as described above, the dry apparatus has a problem in that it is difficult to change the measurement position due to the structural problem of fixing the jelly-like solid contacting the tarsal to the vibrator. This problem can be solved by using two-dimensionally arranged vibrators, but a new problem arises that a complicated circuit is required.
[0013]
The present invention has been made to solve the above-described conventional problems, and the reciprocating and accurate two-dimensional ultrasonic diagnosis can be performed by easily moving and adjusting the transducer in the vertical and longitudinal directions without wetting the test part. An object of the present invention is to provide an ultrasonic bone diagnostic apparatus capable of obtaining data.
[0014]
The present invention also maintains appropriate adhesion of the ultrasonic matching material container to the test part without causing pain to the subject due to the pressure with which the ultrasonic matching material container in which the vibrator is arranged is in close contact with the test part. An object of the present invention is to provide an ultrasonic bone diagnostic apparatus capable of
[0015]
The present invention can also determine whether the position of the test part is appropriate from the relationship between the position of the ultrasonic matching material container and the pressing force in the process of bringing the ultrasonic matching material container into close contact with the test part. An object is to provide an ultrasonic bone diagnostic apparatus.
[0016]
The present invention also provides an ultrasonic bone diagnostic apparatus capable of improving the reliability of ultrasonic diagnostic data by detecting the movement of the test part from a change in pressure on the test part of the ultrasonic matching material container. The purpose is to do.
[0017]
The present invention also provides an ultrasonic bone diagnostic apparatus that can improve the adhesion of the ultrasonic alignment material container by making the contact surface of the ultrasonic alignment material container with the test portion substantially parallel to the surface of the test portion. The purpose is to provide.
[0018]
The present invention also provides an ultrasonic bone diagnostic apparatus that can shorten the processing time before and after the measurement and increase the working efficiency by using a medium for improving the adhesion of the ultrasonic matching material container to the test part. The purpose is to provide.
[0019]
[Means for Solving the Problems]
An ultrasonic bone diagnostic apparatus according to the present invention includes a plurality of ultrasonic matching devices equipped with an ultrasonic matching material and a transducer that transmits and receives ultrasonic waves to a subject by adjusting the position in the vertical and longitudinal directions. A material container is provided, and after the subject is sandwiched between a plurality of ultrasonic matching material containers, the vibrator is adjusted to an optimum position for transmitting ultrasonic waves and then fixed.
[0020]
The present invention has a simple structure so that a test part is sandwiched between ultrasonic matching material containers in which an ultrasonic matching material is placed and a vibrator is arranged so that measurement points can be positioned easily by moving and adjusting easily up and down. By doing so, an ultrasonic bone diagnostic apparatus capable of obtaining reproducible and accurate two-dimensional ultrasonic diagnostic data without wetting the test part is obtained.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there are provided a plurality of ultrasonic matching material containers in which a liquid ultrasonic matching material is placed and a vibrator is accommodated therein so as to be adjustable in the vertical and longitudinal directions. Arranged so that the subject is sandwiched by the acoustic wave matching material container A pressure sensor for detecting a pressing force when the ultrasonic matching material container is brought into close contact with the subject, and the ultrasonic matching material container is attached to the subject when the output of the pressure sensor reaches a predetermined value. A controller that controls the operation of the driving means that is driven, and a motion detection circuit that monitors the output of the pressure sensor and detects the movement of the subject based on the change, and presses the ultrasonic matching material container against the subject. The pressure is kept constant and the quality of the subject measurement is judged from the magnitude of the change in the output of the pressure sensor. The transducer is sandwiched between ultrasonic matching material containers that are arranged so that they can be easily moved up and down and back and forth in the ultrasonic matching material. The pressure of the ultrasonic matching material container to be in close contact with the test part is detected by a pressure sensor to adjust the driving means of the ultrasonic matching material container, and the test is performed by changing the pressure on the test part of the ultrasonic matching material container. To detect the movement of Therefore, it is possible to easily inspect and obtain reproducible and accurate two-dimensional ultrasonic diagnostic data without wetting the test part. In addition, it is possible to maintain appropriate adhesion of the ultrasonic matching material container to the test part without causing pain to the subject due to the pressure of the ultrasonic matching material container being in close contact with the test part. That can improve the reliability of Have
[0022]
The invention according to claim 2 of the present invention is A plurality of ultrasonic matching material containers are provided in which a liquid ultrasonic matching material is put and a vibrator is accommodated in each of which can be adjusted in the vertical and forward / backward directions, and the subject is sandwiched between the plurality of ultrasonic matching material containers. A pressure sensor for detecting a pressing force when the ultrasonic matching material container is brought into close contact with a subject, a position sensor for detecting a position of the ultrasonic matching material container, and outputs of the pressure sensor and the position sensor. A position determination unit that determines the displacement of the subject, and performs pass / fail determination of the subject position based on the pressing force versus position curve of the determination result Ultrasonic matching material The ultrasonic matching material container in the process where the vibrator is sandwiched between ultrasonic matching material containers arranged so that the movement can be easily adjusted in the vertical and longitudinal directions, and the ultrasonic matching material container is in close contact with the test portion Calculate the relationship between the position of the sensor and the change in pressing force, and determine whether the position of the test part is appropriate By doing so, In addition to the effect that the test part can be easily inspected and the reproducible and accurate two-dimensional ultrasonic diagnostic data can be obtained without getting the test part wet, the test part is correctly positioned and highly reliable. It has the effect that ultrasound diagnostic data can be obtained.
[0023]
Claims of the invention 3 The invention described in 1), a pressure sensor for detecting a pressing force when the ultrasonic matching material container is brought into close contact with a subject, and when the output of the pressure sensor reaches a predetermined value, Driving the ultrasonic matching material container with respect to the subject And a controller for controlling the operation of the driving means, and the pressure of the ultrasonic matching material container against the subject is kept constant, and the pressure that causes the ultrasonic matching material container to be in close contact with the test portion By adjusting the driving means of the ultrasonic matching material container by detecting the pressure sensor, the ultrasonic matching material can be used without causing pain to the subject due to the pressure with which the ultrasonic matching material container is in close contact with the test portion. It has the effect | action that the appropriate close_contact | adherence with respect to the to-be-tested part of a container can be hold | maintained.
[0024]
Claims of the invention 4 The invention described in (1) comprises a motion detection circuit that monitors the output of the pressure sensor and detects the movement of the subject from the change, and determines whether the measurement of the subject is good or not from the magnitude of the change in the output of the pressure sensor. The operation of the ultrasonic diagnostic data can be improved by detecting the movement of the test part by the change of the pressure on the test part of the ultrasonic matching material container. Have
[0025]
Claims of the invention 5 The invention described in (2) drives the ultrasonic matching material container relative to the subject. Said The driving means consists of an electric motor and a cylinder that transmits the motion of the electric motor to the ultrasonic matching material container, and the processing time before and after the measurement is made by automating the driving of the ultrasonic matching material container. It is possible to obtain two-dimensional ultrasonic diagnostic data that can be easily inspected, reproducibly and accurately obtained.
[0026]
Claims of the invention 6 The invention described in (2) drives the ultrasonic matching material container relative to the subject. Said The driving means is composed of a compressor and a piston for transmitting the air pressure from the compressor to the ultrasonic matching material container, and the driving of the ultrasonic matching material container is automated, so that the processing before and after the measurement is performed. It has the effect of shortening the time, enabling easy inspection, and obtaining reproducible and accurate two-dimensional ultrasonic diagnostic data.
[0027]
Claims of the invention 7 According to the invention described in the above, the ultrasonic matching material is water, and the use of water as the ultrasonic matching material makes it easy to handle, inexpensively reproducible and accurate. It has an effect that two-dimensional ultrasonic diagnostic data can be obtained.
[0028]
According to an eighth aspect of the present invention, the contact surface of the ultrasonic matching material container with the subject is shaped so as to be parallel to the skin surface of the subject, and the contact surface of the ultrasonic matching material container is It is intended to be in close contact with the surface of the specimen, and the contact surface of the ultrasonic matching material container with the test part is substantially parallel to the surface of the test part, improving the adhesion of the ultrasonic matching material container, By improving the propagation characteristics of ultrasonic waves, it is possible to obtain high-quality data and realize an excellent ultrasonic bone diagnostic apparatus with high accuracy.
[0029]
According to a ninth aspect of the present invention, a plate-like jelly is used as means for bringing the ultrasonic matching material container into close contact with the test portion, and the ultrasonic matching material container is in close contact with the test portion. By using a plate-like jelly as a medium for enhancing the performance, the processing time before and after the measurement can be shortened, and the working efficiency can be increased.
[0030]
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and FIGS. 2 to 11. FIG. 2 is a diagram illustrating a configuration example of a test object sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention, and FIG. 3 is an illustration of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention. FIG. 4 is a diagram showing another configuration example of the test portion clamping mechanism, FIG. 4 is a diagram showing a configuration example of the test portion clamping mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention, and FIG. The figure which shows the other structural example of the test part pinching mechanism of the ultrasonic bone diagnostic apparatus in 2nd Embodiment of this, FIG. 6 is a test part of the ultrasonic bone diagnostic apparatus in the 3rd Embodiment of this invention. It is a figure which shows the structural example of a pinching mechanism.
[0031]
FIG. 7 shows the relationship between the pressing force with respect to the foot sensed by the pinching mechanism of the test part of the ultrasonic bone diagnostic apparatus according to the third embodiment of the present invention and the detection position of the position sensor (contact position with respect to the foot). FIG. 8 is a diagram showing a configuration example of a test portion sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention, and FIG. 9 is an ultrasonic wave according to the fourth embodiment of the present invention. FIG. 10 is a diagram showing another configuration example of a test part sandwiching mechanism of the bone diagnosis apparatus, and FIG. 10 is a diagram showing a configuration example of a test part sandwiching mechanism of the ultrasonic bone diagnosis apparatus according to the fifth embodiment of the present invention. (A) is a view seen from above, (B) is a view seen from the rear, and FIG. 11 is a configuration example of a test subject sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a sixth embodiment of the present invention. FIG.
[0032]
(First embodiment)
First, with reference to FIG. 2, the structure of the to-be-tested part pinching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention will be described. In FIG. 2, 1 and 2 can be moved in the vertical and forward / backward directions of the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's part or the foot 11 that is the subject. And an ultrasonic matching material (generally using water or a liquid material such as castor oil, which is easy to transmit ultrasonic waves. Is an ultrasonic matching material container (hereinafter referred to as a water tank in the present embodiment) containing water, and generally has a plurality of water tanks 14 and 15 (two in the present embodiment). It arrange | positions so that a to-be-tested part or a test object (henceforth this embodiment, the rib 3 or the foot 11) may be pinched | interposed, and each water tank 14 and 15 may have one or several vibrators 1 and 2 (this embodiment 1) is in the water tanks 14 and 15, respectively. After relative calcaneus 3 is adjusted in the vertical longitudinal direction in the drawing in optimal position for transmitting and receiving ultrasonic waves, configured to be fixed.
[0033]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on rails 18 and 19 and moving them in the left-right direction in the figure.
[0034]
Reference numerals 18 and 19 denote rails on which the wheels 16 and 17 are mounted to move the water tanks 14 and 15 in the left-right direction in the drawing, respectively, and reference numerals 20 and 21 rotate to rotate the water tanks 14 and 15 through the cylinders 22 and 23, respectively. Is a motor that moves the water tanks 14 and 15 in the horizontal direction in the figure by converting the rotational movement of the motors 20 and 21 into the horizontal movement in the figure, and 24 is a test object. A base 25 for supporting the entire part sandwiching mechanism is a footrest on which the foot 11 is placed. The electric motors 20 and 21 and the cylinders 22 and 23 constitute driving means for the water tanks 14 and 15.
[0035]
Next, with reference to FIG. 2, the operation of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention will be described. First, when the foot 11 is placed on the footrest 25, the water tank 14 is moved by starting the electric motors 20 and 21 and moving the cylinders 22 and 23 toward the foot 11 under the control of a controller (not shown). 15 are brought into close contact with the heel portion of the foot 11 from the left and right, and the motors 20 and 21 are stopped at this stage. The surface where the water tanks 14 and 15 come into contact with the foot 11 is made of a material that allows easy passage of ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave easily propagates from the vibrator 1 to the vibrator 2 by being placed in the position, it is possible to make a precise diagnosis.
[0036]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the electric motors 20 and 21 rotate so as to move the water tanks 14 and 15 outward from the feet 11 through the cylinders 22 and 23 under the control of a controller (not shown).
[0037]
Next, with reference to FIG. 3, another configuration example of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention shown in FIG. 2 will be described. In FIG. 3, 1 and 2 can be moved in the vertical and forward / backward directions of the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's foot or the subject's foot 11. And an ultrasonic matching material container (hereinafter referred to as water in this embodiment) containing an ultrasonic matching material (water is used in the present embodiment). In general, a plurality of water tanks 14 and 15 (two in this embodiment) sandwich a test part or a subject (hereinafter referred to as rib 3 or a foot 11 in this embodiment). In each of the water tanks 14 and 15, one or more vibrators 1 and 2 (one in the present embodiment) are placed in the water in the water tanks 14 and 15, respectively, and the ribs 3 (FIG. 1). After being adjusted in the vertical and vertical directions in the figure to the optimal position for transmitting ultrasonic waves Configured to be fixed.
[0038]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on the rails 18 and 19 to move in the left-right direction in the figure, and 18 and 19 are wheels 16 and 17 respectively. It is a rail for moving in the left-right direction.
[0039]
32 is a compressor for discharging and sucking air; 34 is an air reservoir for smoothing the pressure change of air discharged and sucked from the compressor 32; 30 is an air hose for connecting air from the compressor 32; 27 is a piston that moves the middle cylinders 28 and 29 connected to the water tanks 14 and 15 in the left-right direction in the figure by changes in air pressure received through the air hose 30, and 28 and 29 are pushed out by the pistons 26 and 28, respectively. An intermediate cylinder that moves the water tanks 14 and 15 toward the foot 11, 24 is a base that supports the entire test portion clamping mechanism, and 25 is a footrest on which the foot 11 is placed. The compressor 32 and the pistons 26 and 27 constitute driving means for the water tanks 14 and 15.
[0040]
Next, with reference to FIG. 3, the operation of another example of the test subject sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention will be described. First, when the foot 11 is placed on the footrest 25, the compressor 32 is operated under the control of a controller (not shown), and the air pressure is sent to the pistons 26 and 27 through the air reservoir 34 and the air hose 30. , 29 are moved toward the foot 11 to bring the water tanks 14 and 15 into close contact with the foot 11 and the compressor 32 is stopped and fixed in this state. The surfaces of the water tanks 14 and 15 that are in contact with the feet 11 are made of a material that allows easy passage of ultrasonic waves, and the water tanks 14 and 15 are filled with water. By placing the ultrasonic wave, the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2, so that a precise diagnosis can be made.
[0041]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the compressor 32 operates in reverse to suck the air in the air reservoir 34 and the air hose 30 and remove the air from the pistons 26 and 27 (the compressor 32 may be opened to reduce the pressure). The middle cylinders 28 and 29 of the pistons 26 and 27 and the water tanks 14 and 15 are moved outward from the foot 11.
[0042]
(Second Embodiment)
Next, with reference to FIG. 4, the structure of the test subject clamping mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention will be described. In FIG. 4, 1 and 2 can be moved in the vertical and forward / backward directions in the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's part or the foot 11 that is the subject. And an ultrasonic matching material container (hereinafter, water is used in this embodiment as well as in the first embodiment) (hereinafter referred to as water is used in this embodiment). In this embodiment, it is called a water tank), and in general, a plurality of water tanks 14 and 15 (two in this embodiment) are a test portion or a subject (hereinafter referred to as rib 3 in this embodiment). (FIG. 1) or the foot 11) is interposed, and each of the water tanks 14 and 15 has one or more vibrators 1 and 2 (one in this embodiment) in the water tanks 14 and 15. In the water, the top and bottom of the figure are at the optimal positions for transmitting ultrasonic waves to the ribs 3 respectively. After being adjusted to the rear direction, configured to be fixed.
[0043]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on rails 18 and 19 and moving them in the left-right direction in the figure.
[0044]
Reference numerals 18 and 19 denote rails on which the wheels 16 and 17 are mounted to move the water tanks 14 and 15 in the left-right direction in the drawing, respectively, and reference numerals 20 and 21 rotate to rotate the water tanks 14 and 15 through the cylinders 22 and 23, respectively. , 22 and 23 are cylinders that move the water tanks 14 and 15 in the horizontal direction in the figure by converting the rotational motion of the motors 20 and 21 into the horizontal movement in the figure, respectively. The electric motors 20 and 21 and the cylinders 22 and 23 constitute driving means for the water tanks 14 and 15.
[0045]
Reference numerals 36 and 37 denote pressure sensors that detect the pressures of the water tank 14 and the water tank 15 being pressed against the foot 11 by the cylinders 22 and 23, respectively, and 38 and 39 monitor the outputs of the pressure sensors 36 and 37, respectively. The controller 20 stops the electric motors 20 and 21 when a predetermined pressure is reached, 24 is a base that supports the entire test-part sandwiching mechanism, and 25 is a footrest on which the foot 11 is placed.
[0046]
Next, with reference to FIG. 4, the operation of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention will be described. First, when the foot 11 is placed on the footrest 25, the water tank 14 is moved by starting the electric motors 20 and 21 and moving the cylinders 22 and 23 toward the foot 11 under the control of a controller (not shown). , 15 are closely attached to the heel part of the foot 11 from the left and right. The pressures causing the water tanks 14 and 15 to be in close contact with the heel portion of the foot 11 correspond to the pressures applied to the pressure sensors 36 and 37 by the cylinders 22 and 23, respectively, and are thus detected by the pressure sensors 36 and 37 and reach the specified pressure. Then, the controllers 38 and 39 are operated to stop the electric motors 20 and 21. Of course, you may make it stop the electric motors 20 and 21 in steps according to the pressure.
[0047]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the electric motors 20 and 21 rotate so as to move the water tanks 14 and 15 outward from the feet 11 through the cylinders 22 and 23 under the control of a controller (not shown).
[0048]
According to the present embodiment, since the pressure of the water tanks 14 and 15 with respect to the foot 11 can be automatically maintained in an optimal state, a highly reproducible and accurate diagnosis can always be obtained automatically. Further, the surface where the water tanks 14 and 15 are in contact with the sole 11 is made of a material that can easily pass ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2 by being placed in a proper state, a precise diagnosis can be made.
[0049]
Next, with reference to FIG. 5, another configuration example of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention shown in FIG. 4 will be described. In FIG. 5, 1 and 2 can be moved in the vertical and forward / backward directions in the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's part or the foot 11 that is the subject. And an ultrasonic matching material container (hereinafter, water is used in this embodiment as well as in the first embodiment) (hereinafter referred to as water is used in this embodiment). In this embodiment, it is called a water tank), and in general, a plurality of water tanks 14 and 15 (two in this embodiment) are a test portion or a subject (hereinafter referred to as rib 3 in this embodiment). Alternatively, each of the water tanks 14 and 15 has one or more vibrators 1 and 2 (one in the present embodiment) placed in the water in the water tanks 14 and 15. Vertical and forward / backward directions in the figure at the optimal positions for transmitting ultrasonic waves to the ribs 3 After being adjusted, configured to be fixed.
[0050]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on the rails 18 and 19 to move in the left-right direction in the figure, and 18 and 19 are wheels 16 and 17 respectively. It is a rail for moving in the left-right direction.
[0051]
32 is a compressor for discharging and sucking air; 34 is an air reservoir for smoothing the pressure change of air discharged and sucked from the compressor 32; 30 is an air hose for connecting air from the compressor 32; 27 is a piston that moves the middle cylinders 28 and 29 connected to the water tanks 14 and 15 in the left-right direction in the figure by changes in air pressure received through the air hose 30, and 28 and 29 are pushed out by the pistons 26 and 28, respectively. This is an intermediate cylinder that moves the water tanks 14 and 15 toward the foot 11.
[0052]
Reference numeral 24 denotes a platform that supports the entire test-part sandwiching mechanism, 25 is a footrest on which the foot 11 is placed, and 40 is an air pressure measured by the compressor 32 to measure the air pressure. A pressure sensor 42 that indirectly detects the pressure in the tanks 14 and 15 is a compressor controller that stops the compressor 32 when a predetermined pressure is reached using pressure data detected by the pressure sensor 40. The compressor 32 and the pistons 26 and 27 constitute driving means for the water tanks 14 and 15.
[0053]
Next, with reference to FIG. 5, the operation of another example of the test-substance clamping mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention shown in FIG. 4 will be described. First, when the foot 11 is placed on the footrest 25, the compressor 32 is operated under the control of a controller (not shown), and the air pressure is sent to the pistons 26 and 27 through the air reservoir 34 and the air hose 30. , 29 are moved toward the foot 11 to bring the water tanks 14 and 15 into close contact with the foot 11. The pressure with which the water tanks 14, 15 are pressed against the foot 11 can be indirectly detected by the pressure sensor 40, and when the determined pressure is reached, the compressor 32 is stopped by the control of the compressor controller 42. Maintain that state.
[0054]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the compressor 32 operates in reverse to suck the air in the air reservoir 34 and the air hose 30 and remove the air from the pistons 26 and 27 (the compressor 32 may be opened to reduce the pressure). The middle cylinders 28 and 29 of the pistons 26 and 27 and the water tanks 14 and 15 are moved outward from the foot 11.
[0055]
According to the present embodiment, since the pressure of the water tanks 14 and 15 with respect to the foot 11 can be automatically maintained in an optimal state, a highly reproducible and accurate diagnosis can always be obtained automatically. Further, the surfaces of the water tanks 14 and 15 that are in contact with the feet 11 are made of a material that can easily pass ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2 by placing it in the state, a precise diagnosis can be made.
[0056]
(Third embodiment)
Next, with reference to FIG. 6, the structure of the to-be-tested part pinching mechanism of the ultrasonic bone diagnostic apparatus according to the third embodiment of the present invention will be described. In FIG. 6, 1 and 2 can be moved in the vertical and forward / backward directions of the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's part or the foot 11 that is the subject. And an ultrasonic matching material container (hereinafter, water is used in this embodiment as well as in the first embodiment) (hereinafter referred to as water is used in this embodiment). In this embodiment, it is called a water tank), and in general, a plurality of water tanks 14 and 15 (two in this embodiment) are a test portion or a subject (hereinafter referred to as rib 3 in this embodiment). Alternatively, each of the water tanks 14 and 15 has one or more vibrators 1 and 2 (one in the present embodiment) placed in the water in the water tanks 14 and 15. Vertical and forward / backward directions in the figure at the optimal positions for transmitting ultrasonic waves to the ribs 3 After being adjusted, configured to be fixed.
[0057]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on rails 18 and 19 and moving them in the left-right direction in the figure.
[0058]
Reference numerals 18 and 19 denote rails on which the wheels 16 and 17 are mounted to move the water tanks 14 and 15 in the left-right direction in the drawing, respectively, and reference numerals 20 and 21 rotate to rotate the water tanks 14 and 15 through the cylinders 22 and 23, respectively. , 22 and 23 are cylinders that move the water tanks 14 and 15 in the horizontal direction in the figure by converting the rotational motion of the motors 20 and 21 into the horizontal movement in the figure, respectively. The electric motors 20 and 21 and the cylinders 22 and 23 constitute driving means for the water tanks 14 and 15.
[0059]
Further, 100 and 101 are position sensors for detecting the positions of the cylinders 22 and 23 and the water tanks 14 and 15 by engaging with the cylinders 22 and 23, respectively, and 36 and 37 are pushed by the cylinders 22 and 23, respectively. And a pressure sensor that detects the pressure with which the water tank 15 is pressed against the foot 11, and 102 determines the displacement of the foot 11 that is the subject by monitoring the outputs of the pressure sensors 36 and 37 and the position sensors 100 and 101. And a position determiner that outputs a position determination output.
[0060]
Next, with reference to FIG. 6, the operation of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the third embodiment of the present invention will be described. First, when the foot 11 is placed on the footrest 25, the water tank 14 is moved by starting the electric motors 20 and 21 and moving the cylinders 22 and 23 toward the foot 11 under the control of a controller (not shown). , 15 are closely attached to the heel part of the foot 11 from the left and right. Although not shown in FIG. 6, controllers 38 and 39 connected as shown in FIG. 4 are provided, and the water tanks 14 and 15 are brought into close contact with the heel portion of the foot 11 by the pressure sensors 36 and 37. When the pressure is detected and a predetermined pressure is reached, the controllers 38 and 39 may be operated to stop the electric motors 20 and 21.
[0061]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the electric motors 20 and 21 rotate so as to move the water tanks 14 and 15 outward from the feet 11 through the cylinders 22 and 23 under the control of a controller (not shown).
[0062]
According to the present embodiment, since the pressure of the water tanks 14 and 15 with respect to the foot 11 can be automatically maintained in an optimal state, a highly reproducible and accurate diagnosis can always be obtained automatically. Further, the surface where the water tanks 14 and 15 are in contact with the sole 11 is made of a material that can easily pass ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2 by being placed in a proper state, a precise diagnosis can be made.
[0063]
Next, with reference to FIGS. 7A and 7B, the operation of the position determiner configured in the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the third embodiment of the present invention will be described. explain. In both FIGS. 7A and 7B, the horizontal axis represents the position detected by the position sensor, and the vertical axis represents the pressing force detected by the pressure sensor. The contact surfaces of the water tanks 14 and 15 have a certain area, and have elasticity to improve contact. In the graph, the water tanks 14 and 15 approach the foot 11 as the horizontal axis goes to the right. At the point A, the water tanks 14 and 15 come into contact with the tarsal 11 and the pressure increases. Although the contact surface has a certain area, if the entire surface comes into contact at this time, the pressure rapidly increases as shown in FIG. 7A, and the controller 38 as shown in FIG. The motors 20 and 21 are stopped by 39.
[0064]
When the entire surface is in contact at the same time, pressure is uniformly applied to the entire surface at the point B, and a uniform contact state is obtained, so that good data can be obtained. On the other hand, if the position of the subject's foot 11 is bad, as shown in FIG. 7B, when contact is started at point A, the contact area is small and pressure is applied unevenly. The point-B point is not a straight line, and even when the electric motors 20, 21 are stopped at the point B, the pressing force becomes non-uniform so that good data cannot be obtained. In such a situation, as shown in FIG. 7B, the gradient from point A to point B (especially in the vicinity of point A) becomes gentle. The position determiner 102 calculates the gradient based on the outputs of the pressure sensors 36 and 37 and the position sensors 100 and 101, draws a pressing force versus position curve, and determines whether the measurement system is good or bad.
[0065]
(Fourth embodiment)
Next, with reference to FIG. 8, the structure of the to-be-tested part pinching mechanism of the ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention will be described. In FIG. 8, 1 and 2 can be moved in the vertical and forward / backward directions of the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the foot 11 that is the subject or the subject. And an ultrasonic matching material container (hereinafter, water is used in this embodiment as well as in the first embodiment) (hereinafter referred to as water is used in this embodiment). In this embodiment, it is called a water tank), and in general, a plurality of water tanks 14 and 15 (two in this embodiment) are a test portion or a subject (hereinafter referred to as rib 3 in this embodiment). Alternatively, each of the water tanks 14 and 15 has one or more vibrators 1 and 2 (one in the present embodiment) placed in the water in the water tanks 14 and 15. Vertical and forward / backward directions in the figure at the optimal positions for transmitting ultrasonic waves to the ribs 3 After being adjusted, configured to be fixed.
[0066]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on rails 18 and 19 and moving them in the left-right direction in the figure.
[0067]
Reference numerals 18 and 19 denote rails on which the wheels 16 and 17 are mounted to move the water tanks 14 and 15 in the left-right direction in the drawing, respectively, and reference numerals 20 and 21 rotate to rotate the water tanks 14 and 15 through the cylinders 22 and 23, respectively. , 22 and 23 are cylinders that move the water tanks 14 and 15 in the horizontal direction in the figure by converting the rotational motion of the motors 20 and 21 into the horizontal movement in the figure, respectively. The electric motors 20 and 21 and the cylinders 22 and 23 constitute driving means for the water tanks 14 and 15.
[0068]
Reference numerals 36 and 37 denote pressure sensors that detect the pressures of the water tank 14 and the water tank 15 being pressed against the foot 11 by the cylinders 22 and 23, respectively, and 38 and 39 monitor the outputs of the pressure sensors 36 and 37, respectively. A controller 44 for stopping the motors 20 and 21 when a predetermined pressure is reached, and a motion detection circuit 44 for monitoring the outputs of the pressure sensors 36 and 37 during the measurement of the foot 11 and detecting the motion of the foot 11 , 24 is a stand that supports the entire test-part sandwiching mechanism, and 25 is a footrest on which the foot 11 is placed.
[0069]
Next, with reference to FIG. 8, the operation of the test subject clamping mechanism of the ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention will be described. First, when the foot 11 is placed on the footrest 25, the water tank 14 is moved by starting the electric motors 20 and 21 and moving the cylinders 22 and 23 toward the foot 11 under the control of a controller (not shown). , 15 are closely attached to the heel part of the foot 11 from the left and right. The pressures causing the water tanks 14 and 15 to be in close contact with the heel portion of the foot 11 correspond to the pressures applied to the pressure sensors 36 and 37 by the cylinders 22 and 23, respectively, and are thus detected by the pressure sensors 36 and 37 and reach the specified pressure. Then, the controllers 38 and 39 are operated to stop the electric motors 20 and 21. Of course, you may make it stop the electric motors 20 and 21 in steps according to the pressure.
[0070]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the electric motors 20 and 21 rotate so as to move the water tanks 14 and 15 outward from the feet 11 through the cylinders 22 and 23 under the control of a controller (not shown).
[0071]
According to the present embodiment, since the pressure of the water tanks 14 and 15 with respect to the foot 11 can be automatically maintained in an optimal state, a highly reproducible and accurate diagnosis can always be obtained automatically. Further, the surface where the water tanks 14 and 15 are in contact with the sole 11 is made of a material that can easily pass ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2 by being placed in a proper state, a precise diagnosis can be made.
[0072]
Next, the operation of the motion detection circuit 44 configured in the present embodiment will be described. Since the subject may move the foot 11 during the measurement, in such a case, it must be detected by some method that correct data is not obtained. The motion detection circuit 44 detects the movement of the foot 11 under measurement from the change in pressure of the pressure sensors 36 and 37, and if there is a change in pressure exceeding a predetermined value, it is assumed that the foot 11 has moved. Correct measurement results can be obtained by performing measures such as re-measurement.
[0073]
Next, with reference to FIG. 9, another configuration example of the test portion sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention shown in FIG. 8 will be described. In FIG. 9, 1 and 2 can be moved in the vertical and forward / backward directions of the figure under the control of the transducer position controllers 12 and 13, respectively, and transmit ultrasonic pulses to the subject's part or the foot 11 that is the subject. And an ultrasonic matching material container (hereinafter, water is used in this embodiment as well as in the first embodiment) (hereinafter referred to as water is used in this embodiment). In this embodiment, it is called a water tank), and in general, a plurality of water tanks 14 and 15 (two in this embodiment) are a test portion or a subject (hereinafter referred to as rib 3 in this embodiment). Alternatively, each of the water tanks 14 and 15 has one or more vibrators 1 and 2 (one in the present embodiment) placed in the water in the water tanks 14 and 15. Vertical and forward / backward directions in the figure at the optimal positions for transmitting ultrasonic waves to the ribs 3 After being adjusted, configured to be fixed.
[0074]
Reference numerals 12 and 13 respectively denote vibrator position controllers that adjust the positions of the vibrators 1 and 2 by moving them in the vertical and longitudinal directions in the figure (in this embodiment, adjustment members of the vibrator position controllers 12 and 13 ( The vibrators 1 and 2 are fixed to each other (not shown), and the adjustment member is moved to fix the adjustment member after the adjustment. However, any other method, for example, The vibrator position controllers 12 and 13 and the vibrators 1 and 2 may be provided separately, and after adjustment, the vibrators 1 and 2 may be fixed by other means. 14 and 15 are wheels for mounting the water tanks 14 and 15 on the rails 18 and 19 to move in the left-right direction in the figure, and 18 and 19 are wheels 16 and 17 respectively. It is a rail for moving in the left-right direction.
[0075]
32 and 33 are compressors for discharging and sucking air, 34 and 35 are air reservoirs for smoothing the pressure change of air discharged and sucked from the compressors 32 and 33, and 30, 31 are compressors 32 and 33. The air hoses for connecting the air from the air hoses 26 and 27 are pistons for moving the inner cylinders 28 and 29 connected to the water tanks 14 and 15 in the left-right direction in the figure by changes in air pressure received through the air hoses 30 and 31, respectively. , 29 are inner cylinders that move the water tanks 14, 15 toward the foot 11 when pushed out by the pistons 26, 28, 24 is a base that supports the entire sandwiching mechanism of the test portion, and 25 is a footrest on which the foot 11 is placed. It is a stand.
[0076]
Reference numerals 40 and 41 denote pressure sensors for receiving the air pressures of the compressors 32 and 33 and measuring the air pressures to indirectly detect the pressure of the water tanks 14 and 15 against the foot 11 by the pistons 26 and 28, respectively. A compressor controller that stops the compressors 32 and 33 when a predetermined pressure is reached using pressure data detected by the pressure sensors 40 and 41, and 45 is a motion detection circuit that monitors the outputs of the pressure sensors 40 and 41 being measured. It is. The compressors 32 and 33 and the pistons 26 and 27 constitute driving means for the water tanks 14 and 15.
[0077]
Next, with reference to FIG. 9, the operation of another example of the test-subject clamping mechanism of the ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention shown in FIG. 8 will be described. First, when the foot 11 is placed on the footrest 25, the compressor 32 is operated under the control of a controller (not shown), and the air pressure is sent to the pistons 26 and 27 through the air reservoirs 34 and 35 and the air hoses 30 and 31, By moving the inner cylinders 28 and 29 toward the foot 11, the water tanks 14 and 15 are brought into close contact with the foot 11. The pressure with which the water tanks 14, 15 are pressed against the foot 11 can be indirectly detected by the pressure sensors 40, 41. When the pressure reaches a predetermined pressure, the compressors 32, 33 are controlled by the compressor controller 42. Stop and maintain that state.
[0078]
Since the vibrators 1 and 2 are fixed to the adjustment members of the vibrator position controllers 12 and 13 and float in the water tanks 14 and 15, the adjustment members of the vibrator position controllers 12 and 13 are moved. As a result, it is possible to freely move up and down and up and down in the figure. After the adjustment member is moved and adjusted, the vibrator position controllers 12 and 13 are stopped and fixed at the positions. Accordingly, the two-dimensional distribution of the propagation characteristics of the rib 3 (FIG. 1) can be measured by adjusting the positions of the vibrators 1 and 2 while keeping the water tanks 14 and 15 in close contact with the foot 11. . After the measurement is completed, the compressors 32 and 33 operate in reverse to suck the air in the air reservoirs 34 and 35 and the air hoses 30 and 31, and then remove the air from the pistons 26 and 27 (open the compressors 32 and 33, etc.). The pistons 26 and 27 are moved outwardly from the foot 11 by moving the inner cylinders 28 and 29 of the pistons 26 and 27 and the water tanks 14 and 15.
[0079]
According to the present embodiment, since the pressure of the water tanks 14 and 15 with respect to the foot 11 can be automatically maintained in an optimal state, a highly reproducible and accurate diagnosis can always be obtained automatically. Further, the surfaces of the water tanks 14 and 15 that are in contact with the feet 11 are made of a material that can easily pass ultrasonic waves, and the water tanks 14 and 15 are filled with water. Since the ultrasonic wave is easily propagated from the vibrator 1 to the vibrator 2 by placing it in the state, a precise diagnosis can be made.
[0080]
Next, the operation of the motion detection circuit 45 configured in the present embodiment will be described. Since the subject may move the foot 11 during the measurement, in such a case, it must be detected by some method that correct data is not obtained. The movement detection circuit 45 detects the movement of the foot 11 under measurement from the change in pressure of the pressure sensors 40 and 41, and if there is a change in pressure exceeding a predetermined value, it is assumed that the foot 11 has moved. Correct measurement results can be obtained by performing measures such as re-measurement.
[0081]
(Fifth embodiment)
Next, with reference to FIG. 10, the structure of the test subject clamping mechanism of the ultrasonic bone diagnostic apparatus according to the fifth embodiment of the present invention will be described. In FIG. 10, (A) is the figure which looked at the to-be-tested part pinching mechanism from the upper part, (B) is the figure which looked at the to-be-tested part pinching mechanism from the back. 10 (A) and 10 (B), reference numeral 11 denotes a tarpaulin, reference numerals 14 and 15 denote water tanks, and reference numerals 46 and 47 denote contact surfaces of the water tank in contact with the tarsal 11.
[0082]
Next, with reference to FIG. 10, the operation of the test-part sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the fifth embodiment of the present invention will be described. In order to make the contact surfaces 46 and 47 of the water tanks 14 and 15 more closely contact the test portion of the foot 11, the inventors have found that an angle of about 15 ° with respect to the front and rear and upper and lower directions (almost almost) It was found that the heel of the foot of the eye is within the range of 15 ± 5 °), so that it is almost parallel to the skin surface. Thereby, the suitable transmission condition of an ultrasonic pulse can be obtained and an exact measurement can be performed.
[0083]
(Sixth embodiment)
Next, with reference to FIG. 11, the structure of the to-be-tested part pinching mechanism of the ultrasonic bone diagnostic apparatus according to the sixth embodiment of the present invention will be described. In FIG. 11, 11 is a tarpaulin, 14 and 15 are water tanks, 46 and 47 are water tank contact surfaces that come into contact with the tarsal 11, and 48 and 49 are ultrasonic examinations using an ultrasonic bone diagnostic apparatus such as during surgery. It is a plate-like jelly used in place of the gel used.
[0084]
Next, with reference to FIG. 11, the operation of the test object clamping mechanism of the ultrasonic bone diagnostic apparatus according to the sixth embodiment of the present invention will be described. As shown in FIG. 11, before the measurement, plate-like jellys 48 and 49 are attached to the tarsal 11 that is the subject. Therefore, any one of the methods described in the above embodiments is applied to press the water tanks 14 and 15 against the foot 11 from above the plate-like jellys 48 and 49.
According to the present embodiment, as in the case of gels that have been used in the past, the labor of applying before measurement or wiping after measurement can be saved, and a large number of subjects can be measured in a short time.
[0085]
As described above, in the description of each embodiment of the present invention, the case where the bone characteristics of the ribs are measured using the tarsal as the subject has been described. However, the present invention is not limited to other parts, such as the upper arm or other joints. The same effect can be obtained in any case.
[0086]
【The invention's effect】
The present invention is configured as described above, and has a particularly simple structure, and is placed in an ultrasonic matching material, in which the transducer is arranged so as to be able to position a measurement point by moving it up and down and back and forth. To provide an ultrasonic bone diagnostic apparatus that can easily inspect and obtain reproducible and accurate two-dimensional ultrasonic diagnosis data without wetting the test part by sandwiching the test part between the containers. Can do.
[0087]
The present invention is configured as described above, and in particular, by adjusting the driving means of the ultrasonic alignment material container by detecting the pressure that causes the ultrasonic alignment material container to be in close contact with the portion to be detected by the pressure sensor, To provide an ultrasonic bone diagnostic apparatus capable of maintaining an appropriate adhesion of an ultrasonic matching material container to a test part without causing pain to a subject due to a pressure to make the ultrasonic matching material container closely contact with the test part. Can do.
[0088]
The present invention is configured as described above, and particularly calculates the relationship between the position of the ultrasonic matching material container and the change in the pressing force in the process of closely contacting the ultrasonic matching material container to the test part. By determining whether or not is appropriate, it is possible to provide an ultrasonic bone diagnostic apparatus capable of correctly positioning a test portion and obtaining highly reliable ultrasonic diagnostic data.
[0089]
The present invention is configured as described above, and particularly improves the reliability of the ultrasonic diagnostic data by detecting the movement of the test part based on a change in pressure on the test part of the ultrasonic matching material container. It is possible to provide an ultrasonic bone diagnostic apparatus that can be used.
[0090]
The present invention is configured as described above. In particular, the contact surface of the ultrasonic matching material container with the test portion is substantially parallel to the surface of the test portion so as to improve the adhesion of the ultrasonic matching material container. As a result, an ultrasonic bone diagnostic apparatus having good ultrasonic propagation characteristics can be provided.
[0091]
The present invention is configured as described above, and in particular, by using a plate-like jelly as a medium for improving the adhesion of the ultrasonic matching material container to the test portion, the processing time before and after the measurement is shortened. In addition, it is possible to provide an ultrasonic bone diagnostic apparatus that can improve work efficiency.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall basic configuration of a conventional ultrasonic bone diagnostic apparatus for measuring ribs.
FIG. 2 is a diagram showing a configuration example of a test portion sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention.
FIG. 3 is a diagram illustrating another configuration example of the test object sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the first embodiment of the present invention.
FIG. 4 is a diagram showing a configuration example of a test object sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a second embodiment of the present invention.
FIG. 5 is a diagram showing another configuration example of the test object sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the second embodiment of the present invention.
FIG. 6 is a diagram showing a configuration example of a test portion sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a third embodiment of the present invention.
FIG. 7 shows a relationship between a pressing force with respect to a foot sensed by a pinching mechanism of a test part of an ultrasonic bone diagnostic apparatus according to a third embodiment of the present invention and a detection position of a position sensor (contact position with respect to the foot). Graph
FIG. 8 is a diagram showing a configuration example of a test portion sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a fourth embodiment of the present invention.
FIG. 9 is a diagram showing another configuration example of the test object sandwiching mechanism of the ultrasonic bone diagnostic apparatus according to the fourth embodiment of the present invention.
FIG. 10 is a diagram illustrating a configuration example of a test object sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a fifth embodiment of the present invention;
(A) Viewed from above
(B) Viewed from the rear
FIG. 11 is a diagram illustrating a configuration example of a test object sandwiching mechanism of an ultrasonic bone diagnostic apparatus according to a sixth embodiment of the present invention.
[Explanation of symbols]
1, 2 vibrator
3 ribs
4, 5 switch
6 Transmission pulse generator
7 Timing circuit
8 Receiving amplifier
9 Arithmetic circuit
10 Display
11 Tarsal
12, 13 Vibrator position controller
14, 15 Water tank
16, 17 wheels
18, 19 rail
20, 21 Electric motor
22, 23 cylinders
24 units
25 footrest
26, 27 Piston
28, 29 middle cylinder
30, 31 Air hose
32, 33 Compressor
34, 35 Air reservoir
36, 37 Pressure sensor
38, 39 Controller
40, 41 Pressure sensor
42, 43 Compressor controller
44, 45 Motion detection circuit
46, 47 Contact surface to the foot
48, 49 plate jelly
50, 51 Contact surface to the foot
100, 101 Position sensor
102 Position determiner

Claims (9)

  1. A plurality of ultrasonic matching material containers each containing a liquid ultrasonic matching material and containing a vibrator that can be adjusted in the vertical and forward / backward directions are arranged, and the subject is sandwiched between the plurality of ultrasonic matching material containers. An ultrasonic bone diagnostic device,
    A pressure sensor for detecting a pressing force when the ultrasonic alignment material container is brought into close contact with the subject; and when the output of the pressure sensor reaches a predetermined value, the ultrasonic alignment material container is attached to the subject. A controller for controlling the operation of the driving means to be driven, and a motion detection circuit for monitoring the output of the pressure sensor and detecting the motion of the subject from the change, and the controller while maintaining the pressing force of the wave matching material container constant, the motion detection circuit by ultrasonic bone diagnostic device that is configured to determine the acceptability of the object determined from the magnitude of the change in the output of the pressure sensor.
  2. A plurality of ultrasonic matching material containers each containing a liquid ultrasonic matching material and containing a vibrator that can be adjusted in the vertical and forward / backward directions are arranged, and the subject is sandwiched between the plurality of ultrasonic matching material containers. An ultrasonic bone diagnostic device,
    From the pressure sensor for detecting the pressing force when the ultrasonic alignment material container is brought into close contact with the subject, the position sensor for detecting the position of the ultrasonic alignment material container, the pressure sensor, and the output of the position sensor An ultrasonic bone diagnostic apparatus comprising: a position determination unit that determines a displacement of a subject, and configured to determine pass / fail of the subject position based on a pressing force versus position curve as a determination result by the position determination unit.
  3. A pressure sensor for detecting a pressing force at which to contact the ultrasonic matching material container to a subject, the ultrasound matching material container when the output of the pressure sensor reaches a predetermined value with respect to the subject and a control unit for controlling the operation of the drive means for driving said ultrasonic bone diagnostic apparatus according to claim 2, characterized in that to maintain constant the pressing force of the ultrasonic matching material container relative to the subject .
  4. It comprises a motion detector for detecting motion of the subject from the change monitoring the output of the pressure sensor, and judging the quality of the object determined from the magnitude of the change in the output of the pressure sensor The ultrasonic bone diagnostic apparatus according to claim 2 or 3 .
  5. The claim 1, characterized in that it consists of a cylinder for transmitting the driving means for driving the ultrasonic matching material container with respect to the subject the motion of an electric motor the motor to the ultrasonic matching material container 4 The ultrasonic bone diagnostic apparatus according to any one of the above.
  6. The claim 1, characterized in that it consists of a piston which communicates the compressor and the driving means for driving the ultrasonic matching material container with respect to the subject the air pressure from the compressor to the ultrasonic matching material container 4 The ultrasonic bone diagnostic apparatus according to any one of the above.
  7. The ultrasonic bone diagnostic apparatus according to any one of claims 1 to 6, wherein the ultrasonic matching material is water.
  8. So that said ultrasonic matching material container shaped to the contact surface becomes parallel to the skin surface of the subject with the object, the contact surface of the ultrasonic matching material container is in close contact with the subject surface The ultrasonic bone diagnostic apparatus according to any one of claims 1 to 7, wherein the ultrasonic bone diagnosis apparatus is characterized in that :
  9. The ultrasonic bone diagnostic apparatus according to any one of claims 1 to 8, wherein a plate-like jelly is used as means for bringing the ultrasonic matching material container into close contact with a portion to be examined.
JP28627397A 1997-10-03 1997-10-03 Ultrasound bone diagnostic device Expired - Fee Related JP3785260B2 (en)

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Application Number Priority Date Filing Date Title
JP28627397A JP3785260B2 (en) 1997-10-03 1997-10-03 Ultrasound bone diagnostic device

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JP3785260B2 true JP3785260B2 (en) 2006-06-14

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Publication number Priority date Publication date Assignee Title
US7914456B2 (en) 2003-05-30 2011-03-29 Hitachi Medical Corporation Ultrasonic probe and ultrasonic elasticity imaging device
JP2005013283A (en) * 2003-06-23 2005-01-20 Hitachi Medical Corp Ultrasonic probe and ultrasonic diagnostic apparatus
JP5593115B2 (en) * 2010-04-22 2014-09-17 日立アロカメディカル株式会社 Ultrasound bone evaluation device
JP5487008B2 (en) * 2010-05-20 2014-05-07 日立アロカメディカル株式会社 Ultrasound bone evaluation device
JP5325847B2 (en) * 2010-08-11 2013-10-23 毅 椎名 Ultrasonic probe and ultrasonic diagnostic apparatus
JP5840780B2 (en) * 2012-07-17 2016-01-06 古野電気株式会社 Ultrasonic measuring instrument and ultrasonic measuring device
JP5860090B2 (en) * 2014-04-22 2016-02-16 日立アロカメディカル株式会社 Ultrasound bone evaluation device
CN105476660B (en) * 2014-09-30 2019-08-16 通用电气公司 Ultrasonic system
JP6425757B2 (en) * 2017-03-27 2018-11-21 キヤノン株式会社 apparatus

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