JPH04176451A - Ultrasonic diagnostic apparatus - Google Patents

Abstract

PURPOSE:To ensure accuracy and safety in the irradiation of an object part such as affected part with a laser light even with no actual irradiation of the laser light by detecting a direction of irradiation with the laser light to be displayed on an ultrasonic image. CONSTITUTION:An ultrasonic endoscope 22 having a laser guide 24 inserted into an insertion port is inserted into a body through an oral cavity and an affected part is set in such a condition as to be observable optically. An ultrasonic wave is transmitted from or received with an ultrasonic vibrator 41 to allow the displaying of an ultrasonic tomographic image 58 on a monitor 49. In this case, the direction of irradiation with the laser light as detected with a rotation detecting mechanism 55 is displayed simultaneously on the ultrasonic tomographic image 58 via a signal processing section 48. In this manner, the direction of irradiation with the laser light can be checked on the ultrasonic diagnosis image 48 beforehand without irradiation with the laser light. This enables accurate irradiation with the laser light of an object part subjected to a laser treatment by irradiation with the laser light and also permits the prevension of irradiating other parts by mistake with the laser light thereby ensuring safety.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic diagnostic apparatus used in combination with a laser beam irradiation means.

[Prior art] Laser therapy is used to remove abnormal formations in weak areas within body cavities that would be extremely dangerous to remove with a regular scalpel, or to destroy tissue around tumors. It is well known that To date, many cases of successful treatment of malignant tumors using lasers have been reported.

This laser treatment device has a display on the monitor to shorten the time from detection of the affected area to treatment, and to avoid misalignment of the treatment device relative to the affected area and enable prompt and appropriate laser irradiation. While controlled by ultrasonic tomographic images,
A device that activates a treatment device has been proposed.

The present applicant has also filed a patent application for one such device in Japanese Patent Application No.
In No. 217201, a device as shown in FIG. 16 was proposed. This device is inserted into blood vessels to detect blood clots,
This is a laser treatment device designed for treatment.

An ultrasonic transducer 2 is provided at the tip of the insertion section of the endoscope 1, and this ultrasonic transducer 2 transmits the rotational driving force generated by the motor 12 to a rotational driving force transmission member such as a gear, a pulley, or a belt. 17.18 causes the shirt to rotate in the direction perpendicular to the insertion part axis,
It is designed to emit ultrasonic waves over the entire 60° circumference. The ultrasonic waves emitted toward the inner wall of the blood vessel propagate to the living tissue deep within the inner wall, and the ultrasonic waves reflected from there are received again by the ultrasonic transducer 2 and converted into electrical signals. After this electric signal is amplified and detected by an amplification and detection circuit, it is sent to the motor 1.
The ultrasonic tomographic image from the inner wall of the blood vessel to the deep part of the inner wall is displayed along with the angle signal from the encoder 16 connected to the blood vessel 2, and if there is a thrombus, its position and depth can be detected. It is.

A side surface near the tip of the insertion section 1 is provided with one opening from which the tip of the laser guide 3 having the tip 4 projects. The laser guide 3 is arranged in parallel with the signal cable 5 of the ultrasound transducer 2 and extends inside the insertion section 1 toward the operator's hand. Laser beams can be focused and irradiated onto tissues,
It is used for treatment by irradiating it out of focus to cause perforation or vaporizing it.

To perform treatment using the laser treatment device configured as described above, first insert the insertion section 1 into the body cavity, and when it reaches the vicinity of the treatment area, the operator can operate the insertion section 1 at the tip of the insertion section. A drive signal is sent to the sonic vibrator 2 via the drive unit 10 to drive it. The ultrasonic transducer 2 makes one rotation (360 degrees), irradiates the thrombus 6a on the inner wall 6 of the blood vessel with ultrasonic waves, receives an echo signal, and performs the necessary signal processing based on the angle information from the encoder 16. The ultrasonic image is displayed on the monitor 14 of the observation device W15.

Then, the ultrasound echo signal received by the ultrasound transducer 2 is converted into an electrical signal (voltage), and the affected area detection unit 7 compares the value with a predetermined value. I am trying to determine that it is a thrombus 6a. In this case, the predetermined value is a value of an electrical signal based on an echo signal from normal tissue. When the affected area detection unit 7 determines that there is a thrombus 6a, the laser operation unit 8 starts laser irradiation via the light source 11. −
On the other hand, the ultrasonic transducer 2 rotates once and detects the thrombus 6 at the affected area detection unit 7.
If it is determined that a is not present, laser irradiation is not performed.

The angle information is obtained by an encoder] 6 connected to the motor 12, and the signal from this is manually input to the signal processing section 13 of the observation instrument W15.

[Problems to be Solved by the Invention] However, such a laser treatment device has the following problems. That is, in the device shown in FIG. 16 in which the laser guide 3 is made to protrude from the opening 19 on the side near the tip of the endoscope insertion part, the direction in which the laser beam is emitted is fixed. In cases where the disease spreads in the circumferential direction of the blood vessel wall, laser light cannot be emitted to the entire affected area unless the endoscope itself is twisted and rotated.

As shown in FIG. 17, an opening 19 is provided at the tip of the endoscope insertion part, and a laser guide 3 that can irradiate laser light in a direction perpendicular to the long axis direction is made to protrude to the ultrasonic scanning surface 9.
There is also a device that can emit laser light to the entire affected area by rotating only the laser guide 3, but it is necessary to irradiate it to see in which direction the laser light is irradiated. For this reason, depending on the direction of the laser guide 3, the laser beam may be irradiated onto the entire living tissue of the salmon, which may pose a safety problem, or the ultrasonic transducer 2 may be irradiated with the laser beam, causing the ultrasonic transducer 2 to There was a possibility that it would be destroyed.

[Purpose of the Invention] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an ultrasonic diagnostic device that can ensure reliability and safety by reliably irradiating a target area such as an affected area with laser light. shall be.

[Means for Solving the Problems] The present invention includes an ultrasonic observation means for observing a target area such as an affected area using an ultrasonic transducer, a laser light irradiation unit for irradiating a laser beam toward the target area of the affected area, and a laser beam irradiation direction detection means for detecting the irradiation direction of the laser beam irradiated by the laser beam irradiation means; a display means for displaying the laser beam irradiation direction on the ultrasound image of the ultrasound observation means;
This constitutes an ultrasonic diagnostic device.

"Operation" According to the diagnostic device having the above configuration, the laser beam irradiation direction detected by the laser beam irradiation direction detection means is displayed on the ultrasound image of the ultrasound observation means, so that the laser beam is not irradiated. Since the direction of laser light irradiation can be confirmed in advance on the ultrasound image, the laser light can be reliably irradiated toward the affected area, and it can also be safely prevented from irradiating other areas. are also secured.

[Example] Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure is an overall configuration diagram of the ultrasonic diagnostic apparatus of the first embodiment, FIG. 2 is an explanatory diagram showing the optical system provided at the tip side of the ultrasonic endoscope, and FIG. Figure 4 is an explanatory diagram showing how the laser irradiation direction is displayed on the monitor. Figure 5 is an explanatory diagram showing that the rotation detection mechanism is equipped with a means to prevent idle rotation. It is a diagram.

As shown in FIG. 1, the ultrasonic diagnostic apparatus 21 of the first embodiment includes an ultrasonic endoscope 22 having a function of transmitting and receiving ultrasonic waves, and a laser beam installed in a channel 23 of this ultrasonic endoscope 22. A laser treatment device 25 that is used with a guide 24 inserted therethrough;
A rotary drive unit 26 for scanning ultrasonic waves, and an observation device 27 for transmitting and receiving ultrasonic waves and displaying an ultrasonic image.
and a light source device (not shown).

As shown in FIG. 3, the ultrasonic endoscope 22 includes an elongated insertion section 31, a large operation section 32 connected to the rear end of the insertion section 31, and the top (rear) of the operation section 32. A cord 34 extends from the operating section 32.

As shown in FIG. 2, a light guide 35 that transmits irradiated light from a light source device (not shown) is inserted into the insertion portion 31, and emits the irradiated light from the end face on the distal end side. The object illuminated with this illumination light is imaged on the distal end surface of the image guide 37 by the objective optical system 36, and this formed image is transmitted to the other end on the eyepiece 33 side. It can be observed from

As shown in FIG. 1, an ultrasonic transducer 41 for transmitting and receiving ultrasonic waves is attached to the tip of the insertion section 31, and is attached to the tip of a flexible shirt I-42 serving as a rotational force transmitting member. There is. The rear end side of this shaft 42 is connected to the operating section 3.
The cord 34 extending from the rotary drive unit 26 is inserted into the cord 34 and is attached to the first gear 43 that constitutes the rotary drive unit 26, and this gear 43 is connected to the second gear 4 that is rotationally driven by the motor 44.
It meshes with 5. In addition, a pulley, a belt, etc. may be used instead of the gears 43 and 45.

An encoder 46 is attached to this motor 44 to detect its rotation angle and send it to the (oscillator) drive section 47 and signal processing section 48 in the observation device 27.

The drive unit 47 outputs a drive pulse for causing the ultrasonic transducer 41 to transmit ultrasonic waves, for example, via a signal line passing through the shaft 42 in synchronization with the angle detected by the encoder 46. Further, the signal processing section 48 includes the ultrasonic transducer 4
The ultrasonic echo signal converted into an electric signal by 1 is amplified, detected, etc., and outputted to four monitors to display an ultrasonic tomographic image.

On the other hand, in the laser treatment device 25 , emission of laser light by the laser light source 51 can be controlled by operating the laser operation section 52 .

The laser light emitted from the laser light source 51 is focused and irradiated onto the base end of the laser guide 24 via the lens 53.

The laser beam irradiated to the base end of this laser guide 24 is
The laser beam is transmitted to the tip (terminus) side by the laser guide 24 inserted into the channel 23, reflected in the right angle direction by the reflection part 54, and can be emitted in a direction perpendicular to the axis of the laser guide 24.

This laser kite 24 can be manually rotated so that the direction in which the laser beam is emitted can be set to any direction. Then, the laser beam emission direction (irradiation direction) is
It can be detected by detecting the rotation angle of the laser guide 240, and the irradiation direction is detected by the rotation detector 155.

For example, a gear 56 as a rotational drive transmission member is attached to the base end side of the laser guide 24, and the rotation angle is detected by a rotation detection mechanism 55 via a gear 57 that meshes with the gear 56.

In addition, a pulley, a belt, etc. may be used instead of the gears 56 and 57.

The signal corresponding to the laser beam irradiation direction detected by the rotation detection mechanism 55 is input to the signal processing section 48, and is processed by the signal processing section 48. For example, as shown in FIG. fli, the irradiation direction is displayed with a line 59.

The gears 56, 57 and the rotation detection mechanism 55 are housed in one case 60, as shown in FIG. 3, and are provided, for example, above the insertion port (forceps insertion port) 61 of the channel 23. Note that if the case 60 is made removable, it will not get in the way when laser treatment is not performed.

Further, the opening in the case 60 through which the laser guide 1-24 is inserted is provided with a notch 62 as shown in FIG. 5(A), while the laser guide 24 side is provided with a notch 62 as shown in FIG. 5(8). A protrusion 63 that fits into the notch 62 is provided,
When the laser guide 24 is rotated, the laser guide 24
The rotation angle (laser irradiation direction) can be reliably detected without rotating idly within the case 60.

According to this first embodiment, as shown in FIG.
The ultrasound endoscope 22 into which the laser guide 24 has been inserted is inserted into the body through the oral cavity 64, for example, and set to a state where the affected area (not shown) can be optically observed, and the ultrasound transducer 41 transmits and receives ultrasound waves. By doing so, the ultrasonic tomographic image 58 can be displayed on the four monitors. In this case, the laser irradiation direction detected by the rotation detection mechanism 55 is simultaneously displayed on the ultrasound tomographic image 58 through the signal processing section 48 as shown by the broken line 59 in FIG. Since the laser irradiation direction is displayed in this way, the laser beam irradiation direction can be confirmed on the ultrasound diagnostic image 48 in advance without irradiating the laser beam. The laser beam can be reliably irradiated to the area. or,
This prevents the laser beam from being irradiated to other areas by mistake.
Safety can be ensured.

FIG. 6 shows an ultrasonic diagnostic apparatus 71 according to a second embodiment of the present invention.

In the first embodiment shown in FIG. 1, an ultrasonic transducer 41 is installed in the endoscope.
The ultrasonic endoscope 22 is configured using an ultrasonic endoscope 22 that is integrally provided with the following components. On the other hand, in the second embodiment, two channels (
An ultrasonic diagnostic apparatus 71 is constructed by using an endoscope 74 having a forceps opening 23.73, and inserting an ultrasonic probe (also referred to as a miniature probe) 75 and a laser guide 24 into each channel 23.73.

The ultrasonic probe 75 is provided with an ultrasonic transducer 41 at the tip of the probe 75, and a shaft 42 extending from the rear end side of the probe 75 is detachably connected to the rotation drive unit 26, for example. Ru.

The opening through which the ultrasonic probe 75 is inserted is provided with a notch as shown in FIG. 5(A), and the outer cylinder of the probe 75 is provided with a notch as shown in FIG. 5(B). A protrusion that fits into the probe 75 is provided to prevent the outer cylinder of the probe 75 from rotating idly with respect to the shaft 42.

The rest of the configuration is the same as that of the first embodiment, and the same components are given the same reference numerals and their explanations will be omitted.

According to the second embodiment, even when the miniature probe 75 is used, safe and reliable laser treatment can be performed as in the first embodiment. Moreover, it is useful when performing laser treatment on a site that cannot be penetrated by an ultrasound endoscope.

FIG. 7 shows the main parts of a third embodiment of the present invention.

For example, in the ultrasonic endoscope 22 of the first embodiment shown in FIG. 1, a rotation restrictor 78 is provided protruding from the outside of the case 60 to restrict the rotation range. Since the rotation restrictor 78 is provided as a protrusion, when the case 60 is to be rotated, the rotation restrictor 81 rotates further than the rotation angle at which it hits the main body of the ultrasound endoscope 22 as shown in the figure. Rotation beyond a certain rotation range is regulated.

In this case, by matching the direction of the one-turn regulator 78 and the laser irradiation direction of the laser kite 24, it is possible to prevent the laser beam from accidentally irradiating the ultrasonic transducer 41UJA and destroying the ultrasonic transducer 41, etc. It can definitely be prevented.

By the way, for example, instead of the ultrasonic probe 75 shown in FIG. 6, an ultrasonic probe 81 having the external shape shown in FIG. 8 or the structure shown in FIG. 9 may be used.

This ultrasonic probe 81 has a tip portion 84 attached to the front end of a drive @83 protruding from the front end of a sheath 82, an ultrasonic transducer 85 is fixed to this tip portion 84, and the sheath 82
2 so that ultrasonic waves can be radiated to the longitudinal side surfaces of the tube. Further, the rear end of the sheath 82 is attached to a drive section 86.

As shown in FIG. 9, a cylindrical first shaft is provided at the rear end of the drive shaft 83.
An O-ring 88.88 attached to the support member 87 and interposed between the outer circumference of the support member 87 and the inner circumference of the sheath
It is rotatably held (within the sheath 82) in a watertight state.

Also, this drive shaft 83 is connected to the second support member 8 even in the middle.
is attached and rotatably held by O-rings 90 and 90 interposed between the inner periphery of the sheath 82 and the inner circumference of the sheath 82.

The inner diameter of the front end of the sheath 82 is tapered in a step-like manner, and an O-ring 91 is interposed between the sheath 82 and the drive shaft 83 . Also, one end of the spring 92 comes into contact with the wall surface of the stepped portion.
is interposed therebetween, and the second support member 89, which is in contact with the other end thereof, is urged rearward in the axial direction by the contact member 92. A protrusion 93 is provided on the drive shaft 83 between the support member 89 and the first support member 87 as shown in FIG. 94 can be accessed.

Further, in order to detect the ultrasonic transmission/reception direction of the ultrasonic transducer 85 attached to the drive shaft 83, a black and white band-shaped position detection mark 95a, for example, is provided on the inner periphery of the sheath 82, and the drive shaft 83 A pink-up 95b for optically reading the mark 95 is attached to form a position (rotational position) detection section 95.

Signal lines 97, 98 are connected to the ultrasonic transducer 85 and the receiver 95b, and these signal lines 97, . 9
8 passes through the inside of the drive shaft 83, the inside of the sheath 82, the third support member 99 provided on the rear end side of the sheath 82, and the inside of the drive shaft 100 whose tip end is attached to this support member 99. It is pulled out from an opening provided in the middle of the drive shaft 100 and guided to the head amplifier 101 and the controller 102 .

An O-ring 103.10.3 that maintains watertightness is interposed between the outer peripheral surface of the nine third support members and the inner peripheral surface of the sheath 82.

A support member 104 is connected to the rear end of the drive shaft 100, and this support member 104 is fixed onto a support member 106 into which a ball screw 105 is screwed, and the ball screw 105 is rotationally driven by a pulse motor 107. be.

This rotation of the pulse motor 107 causes the support member 106 to
, 104 and the drive shaft 1 to which this support member 104 is connected.
It is designed to allow you to move forward and backward from 00.

Further, the inside of the sheath 82 between the first support member 87 and the third support member 5) 9 is filled with a transmission medium 108 such as a liquid that transmits force. And the drive shaft 100
When the is moved back and forth, these two support members 87.9
The drive shaft 83 is moved back and forth through the transmission medium 108 filled between the two spaces. When the drive shaft 83 is moved back and forth, the protrusion 93 is engaged in the spiral groove 94 formed on the inner circumference of the sheath 82.
is advanced and retreated while rotating. Therefore, the ultrasonic transducer 85 attached to the tip 84 is also rotated spirally, and the direction of transmitting and receiving ultrasonic waves can be varied.

The signal line 97 of the ultrasonic transducer 85 is connected to the head amplifier 101 and, as shown in FIG. 11, to a pulser 111 that generates pulses for transmitting ultrasonic waves. The output of the head amplifier 101 is sent to the receiver 1
After being input to 12 and subjected to signal processing, it is converted into a digital signal by an A/D converter 113. This digital signal is converted into a standard video signal by a digital scan converter (abbreviated as DSC) 114, and an ultrasonic tomographic image is displayed on a monitor 115.

The above pulser 111 - A/D converter 113, DSC
114 is connected to the controller I/roller 102, and controls the timing of these operations. Further, this controller roller 102 is connected to the motor 10 via a motor driver 116.
It controls 7.

When used with a laser device, for example, the output signal of the rotation detection mechanism 55 is input to the DSC 114 so that the direction of laser irradiation can be displayed on the screen of the monitor 115.

Next, the operation will be explained.

The controller 102 operates the motor driver 116 to rotate the motor 107. Then, the ball screw 105 rotates, and the support member 106 connected to the ball screw 105 moves forward.

Then, the support member 10 fixed to this support member 106
At the same time as the drive shaft 100 with the drive shaft 100 attached with the drive shaft 100 is pushed into the sheath 82, the nine support members inside the sheath 82 move forward and compress the transmission medium 108 inside the sheath 82.

Then, the transmission medium 108 propagates inside the sheath 82,
It acts to push the support member 87 on the distal end side of the sheath 82 forward. Since the support member 87 is connected to the drive shaft 83, the protrusion 93 attached to the drive shaft 83 is engaged in the groove 94 in the sheath 82, so that the drive shaft 83 is connected to the drive shaft 83.
3 starts rotating to the left about the axis.

Simultaneously with the rotation of the drive shaft 83, the ultrasonic transducer 85 at the tip 84 begins to rotate, resulting in radial scanning.

Further, a pickup 95b is attached to the drive shaft 83, and is detected by a position detection section 95 inside the sheath 82.

The position where the ultrasonic transducer 85 is facing is detected, the signal is sent to the controller 102, and the (pulse) motor 107 is controlled to rotate forward or reverse at the timing of the transmission trigger.

First, the position detecting section 95 has a position detecting mark 95a, which, when expanded, has a large number of black and white bands as shown in FIG. The structure is such that the angular position is detected by the pickup 95b facing the drive shaft 83.
When the pickup 95b rotates, the pickup 95b moves in the left and right direction in FIG.
The A-phase pulse shown in a) is output. Using this A-phase pulse as a trigger, the balsa 111 supplies the pulse TX shown in FIG. 13(C) to the ultrasonic transducer 85 to transmit an ultrasonic wave.

The above-mentioned ultrasonic waves are reflected at the discontinuous portion of the acoustic impedance, are received again by the ultrasonic transducer 85, are converted into electrical signals, and are sent to the monitor 115 via the head-up 101, receiver 112, etc. as shown in FIG. 14 (a). ) The ultrasound tomographic image will be displayed.

The left side of FIG. 14(a) (Nb) also shows the position of the ultrasonic transducer 85 for reference.

Also, when the pickup 95b rotates once, the 13th
As shown in FIG.
The ball screw 105 is then reversed as shown in Figure (d). The support member 99 then retreats, pulling the transmission medium 108 inside the sheath 82 rearward. and,
The ultrasonic transducer 85 at the tip of the sheath 82 is inverted and similarly scans the ultrasonic waves in the inverted direction of rotation. At that time, by receiving the reflected ultrasonic waves, as shown in Fig. 14 (
As shown in b), an ultrasonic tomographic image is displayed on the monitor 115.

In this way, the reversal is repeated for each screen, and the controller 102 sends normal rotation and reversal signals to the DSC 114.
The display on the monitor 115 is switched according to the rotational direction as shown in FIGS. It has become.

It should be noted that the position detection means is not limited to one provided within the sheath 82, and it is obvious that the position detection means may be one that detects the rotation speed (angle) of the pulse motor 107, for example.

An ultrasonic probe 121 shown in FIG. 15 may be used instead of the ultrasonic probe 81 shown in FIG. 8 or 9.

This ultrasonic probe 121 has a drive system suitable for obtaining three-dimensional ultrasonic images with a simple configuration. The male thread 125 provided on this shaft 123 has a female thread 1 provided on the inner peripheral surface of the sheath 122.
26 to form a threaded coupling means. The rear end of this sheath 122 is fixed to the opening of the case 127.

The rear end of the shaft 123 is attached to two rotating shafts of the motor 12 via a spline 128.
When the shaft 123 is rotated at 9, the shaft 123 slides by an amount corresponding to the thread pitch as the shaft 123 rotates. A disc 130 is attached to a position near the rear end of this shirt l-123, and in order to detect the position of this disc 130, a photoelectric switch 131 that detects the position by being shielded from light by the disc 130, for example. 1.32 is established.

When these photoelectric switches 13], , 132 detect the position of the disc 130, they rotate the motor 129 in the opposite direction. For example, when the motor 129 is rotated in one direction by the photoelectric switch 131 and the shaft 123 is moved forward, when the disk 130 moves to the position of the photoelectric switch 132 placed in front as shown in FIG. 130 will block light, the photoelectric switch 132 detects the position of the disc 130, and this time the motor 12
9 is reversely rotated to move the shaft 123 backward. Then, move the disc 1 to the position of the photoelectric switch 131 located at the rear.
30 moves, this disc 130 will block light, so the photoelectric switch 131 detects the position of the disc 130, and this time reversely rotates the motor 129 to remove the shirt l-12.
Advance 3.

Therefore, according to this embodiment, the vibrator 124 can be scanned in a spiral manner. In other words, the vibrator 124 repeats advancing and retreating while rotating. Then, a three-dimensional ultrasound image can be obtained with a simple configuration. Conventionally, the three-dimensional drive unit used dedicated motors and drive mechanisms to generate rotational motion and sliding motion, respectively, resulting in a complex configuration and the fact that rotation and sliding by the motor and drive mechanism were independent. , a control means for synchronizing the rotational movement and the sliding movement is required, whereas this embodiment has the advantage that only one motor 129 is required. Also,
The relationship between the rotation amount and sliding amount of the shaft 123 is as follows:
Since the values 25 and 126 are uniquely determined, there is also the advantage that a control means unlike the conventional example is not required.

[Effects of the Invention] As described above, according to the present invention, the direction in which the laser beam is irradiated is detected and displayed on the ultrasound image. Since the direction in which the laser beam is irradiated can be confirmed, safety can be ensured, and the target area can be reliably irradiated, making it possible to realize a device that facilitates treatment.

[Brief explanation of drawings]

FIGS. 1 to 5 relate to the first embodiment of the present invention.
The figure is an overall configuration diagram of the ultrasonic diagnostic apparatus of the first embodiment, FIG. 2 is an explanatory diagram showing the optical system provided at the tip side of the ultrasonic endoscope, and FIG. Figure 4 is an explanatory diagram showing how the laser irradiation direction is displayed on the monitor, and Figure 5 is an explanatory diagram showing that the rotation detection mechanism is equipped with a means to prevent idle rotation. 6 is a block diagram of an ultrasonic diagnostic apparatus according to a second embodiment of the present invention, and FIG.
The figure is an explanatory diagram showing the main parts of the third embodiment of the present invention, FIG. 8 is an external view of the ultrasonic probe in the fourth embodiment of the present invention, FIG. 9 is a configuration diagram of FIG. 8, and FIG. 10 is an explanatory diagram showing the mechanism for rotating the drive shaft, Fig. 11 is a configuration diagram showing the drive system etc. of the ultrasonic probe in Fig. 9, Fig. 12 is an explanatory diagram showing the position detection mark in Fig. 9 expanded, Fig. 13 is an explanatory diagram of the operation of Fig. 9, Fig. 14 is an explanatory diagram showing that an ultrasonic tomographic image is displayed on the monitor screen by normal and reverse rotation of the ultrasonic transducer, and Fig. 15 is an explanatory diagram of the operation of Fig. 9. FIG. 16 is a sectional view of the ultrasonic probe in the fifth embodiment, FIG. 16 is a configuration diagram of a conventional example, and FIG. 17 is a configuration diagram showing a part of another conventional example. 21... Ultrasonic diagnostic device 22... Ultrasonic endoscope 24... Laser guide 25... Laser treatment device 26... Rotation drive unit 27... Observation device 41
...Ultrasonic vibrator 42...Shaft 44...
- Motor 46... Encoder 47... Drive unit 48 - Signal processing unit 49... Monitor 51... Laser light source 55... Rotation detection @11I58 Ultrasonic tomographic image 59... Broken line 1! No. 7 Agent: Patent Attorney Shinyuki Ito, 712. . Kuyu 3rd RL! J Fig. 4 Fig. 5 Fig. 6 Tsuraku 71 itl Makioki Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. Sotsu O Fig. 13 (c) Tx L and 1-- -=JLf
L bill Figure 14

Claims (1)

[Scope of Claims] Ultrasonic observation means for observing a target region using ultrasound waves transmitted and received via an ultrasonic transducer; laser light irradiation means for irradiating laser light toward the target region; and the laser beam. A laser light irradiation direction detection means for detecting the irradiation direction of the laser light emitted from the light irradiation means; and a display means for displaying the laser light irradiation direction on the ultrasound image of the ultrasound observation means. An ultrasonic diagnostic device characterized by: