JPH05154149A - Ultrasonic probe for intra-body cavity use and ultrasonic diagnosing device for intra-body cavity use - Google Patents

Abstract

PURPOSE:To obtain the ultrasonic probe for intra-body cavity use which facilitates the position recognition to a target position for diagnosis by obtaining the diagonal forward image in an insertion direction and the ultrasonic diagnosing device for intra-body cavity use. CONSTITUTION:An ultrasonic vibrator transducer 14 which is provided at the front end of a rotating body 12 freely rotatably inserted into a long-sized tube 10 and transmits and receives ultrasonic waves in the base end direction of the rotating body 12 and a mirror 16 which is provided on the radiation axis of the ultrasonic waves transmitted from the ultrasonic vibrator transducer 14 and can freely change the angle with the ultrasonic vibrator transducer 14 and can freely change the distance from the ultrasonic vibrator transducer 14 are provided. The ultrasonic waves are transmitted or received in the root end direction of the rotating body 12 from the ultrasonic vibrator transducer 14 provided at the front end of the rotating body 12. Further, the diagonal forward image of the prescribed range is obtd. while changing the distance from the ultrasonic vibrator transducer 14 by moving the mirror 16 or changing the angle of the mirror 16 with the ultrasonic vibrator transducer 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intracorporeal ultrasonic probe and an intracorporeal ultrasonic diagnostic apparatus, and more particularly to an intracorporeal ultrasonic probe and intracorporeal ultrasonic probe for obtaining an ultrasonic image of an inner wall of a blood vessel. The present invention relates to an ultrasonic diagnostic device.

[0002]

2. Description of the Related Art Conventionally, an ultrasonic probe for a body cavity for obtaining an ultrasonic image in a blood vessel is known. As shown in FIG. 7, this ultrasonic probe for body cavity has a long tube 10, and a rotating body 12 is rotatably arranged in the long tube 10. The base end of the rotating body 12 is the tube 1
It is exposed from the base end of 0. An ultrasonic transducer 14 for transmitting and receiving ultrasonic waves is arranged at the tip of the rotating body 12, and a mirror 16 for reflecting the ultrasonic waves is separated from the ultrasonic transducer 14 by a predetermined distance. It is arranged at a predetermined angle (for example, 45 °) with respect to the sound wave transmission direction.

Therefore, the ultrasonic wave transmitted from the ultrasonic transducer 14 is reflected by the mirror 16 at a predetermined angle (for example, 45 °) and transmitted in the direction of arrow B perpendicular to the ultrasonic probe for body cavity. It Then, when the rotating body 12 is rotated in the direction of arrow A, the ultrasonic transducer 14 and the mirror 16 are rotated by the rotating body 12.
And rotates in the direction of arrow A together with the above, and an ultrasonic image of 360 ° centering on the ultrasonic probe for body cavity is obtained.

Further, as shown in FIG.
4 is fixed, the mirror 16 is arranged at the tip of the rotating body 12,
Ultrasound for the body cavity that transmits the ultrasound transmitted backward from the ultrasound transducer 14 by the mirror 16 at a predetermined angle (for example, 45 °) and transmits the ultrasound in the direction perpendicular to the ultrasound probe for the body cavity. A probe is also proposed.

Further, as shown in FIGS. 9 and 10, an electronic scan type intracorporeal ultrasonic probe in which a plurality of ultrasonic transducers 14 are arranged in the circumferential direction has also been proposed. In this electronic scan type ultrasonic probe, the ultrasonic transducer 14 is not rotated, and the ultrasonic transducer 14 that is electronically scanned is sequentially moved so as to sequentially move in a direction perpendicular to the ultrasonic probe for body cavity. Scanning is performed to obtain a 360 ° ultrasonic image centered on the ultrasonic probe for body cavity.

[0006]

The conventional intracorporeal ultrasonic probe is constructed as described above, and can only scan in a direction perpendicular to the intracorporeal ultrasonic probe, so that the diagnostic target site can be scanned. Since the tomographic image of that part cannot be seen until the point reaches, the ultrasonic probe for body cavity is in danger of being exposed to the plaque, thrombus, etc. in the blood vessel and peeling off. There is a demand for an intracorporeal ultrasonic probe that can cause a state and can obtain an image obliquely ahead of the insertion direction of the intracorporeal ultrasonic probe.

The present invention has been made to solve the above problems, and an ultrasonic probe for a body cavity in which a position up to a diagnostic target site can be easily recognized by obtaining an image obliquely ahead of the insertion direction. An object of the present invention is to obtain an ultrasonic diagnostic device for a tentacle and a body cavity.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an ultrasonic probe for body cavity according to the present invention has a long tube and is rotatable in the long tube. Installed in the rotor, an ultrasonic transducer provided at the tip of the rotor to transmit and receive ultrasonic waves in the proximal direction of the rotor, and provided on the radiation axis of the ultrasonic waves sent from the ultrasonic transducer. And a mirror capable of freely changing the distance from the ultrasonic transducer, the ultrasonic wave sent from the ultrasonic transducer is reflected obliquely forward by the mirror to obtain an image diagonally forward. .

The ultrasonic probe for body cavity according to the present invention is provided with a long tube, a rotary body rotatably inserted in the long tube, and a rotary body provided at the tip of the rotary body. An ultrasonic transducer that transmits and receives ultrasonic waves in the proximal direction of the body, and a mirror that is provided on the radiation axis of the ultrasonic waves transmitted from the ultrasonic transducer and that can freely change the angle with respect to the ultrasonic transducer. It is characterized in that an ultrasonic wave sent from an ultrasonic transducer is reflected obliquely forward by the mirror to obtain an image obliquely forward.

Further, the ultrasonic probe for body cavity according to the present invention is provided with a long tube, a rotating body rotatably inserted in the long tube, and a rotating body provided at the tip of the rotating body. The ultrasonic transducer that transmits and receives ultrasonic waves in the proximal direction of the body, and the angle to the ultrasonic transducer and the distance from the ultrasonic transducer that are provided on the radiation axis of the ultrasonic waves transmitted from the ultrasonic transducer A mirror that can be freely changed is provided, and an ultrasonic wave transmitted from an ultrasonic transducer is reflected obliquely forward by the mirror to obtain an image obliquely forward.

The ultrasonic diagnostic apparatus for body cavity according to the present invention includes a long tube, a rotary body rotatably inserted in the long tube, and a base of the rotary body provided at the tip of the rotary body. Ultrasonic transducers that transmit and receive ultrasonic waves in the end direction, and provided on the radiation axis of ultrasonic waves transmitted from the ultrasonic transducers to freely change the angle to the ultrasonic transducers or the distance from the ultrasonic transducers An ultrasonic probe for a body cavity that includes a mirror, an encoder that detects the insertion amount of the ultrasonic probe for a body cavity into the body cavity, and an angle that changes the angle of the mirror with respect to the ultrasonic transducer. Changing means, distance changing means for changing the distance of the mirror from the ultrasonic transducer, control means for controlling the angle changing means and the distance changing means based on information from the encoder, and ultrasonic waves sent from the ultrasonic transducer Reflected diagonally forward The display means for displaying an image of the diagonally obtained front, and an instruction means for instructing a desired target portion displayed on the display means, wherein the control means indicates the desired target portion instructed by the instruction means. It is characterized in that the angle changing means and the distance changing means are controlled so as to continue capturing.

[0012]

According to the above-described structure, the ultrasonic probe for body cavity according to the present invention transmits and receives ultrasonic waves in the proximal direction of the rotating body from the ultrasonic transducer provided at the tip of the rotating body to generate ultrasonic waves. The ultrasonic waves sent from the ultrasonic transducers are reflected obliquely forward while moving the mirror provided on the radiation axis to change the distance from the ultrasonic transducers to obtain an image in the diagonally forward area within a predetermined range.

In the ultrasonic probe for body cavity according to the present invention, ultrasonic waves are transmitted and received by the ultrasonic transducer provided at the tip of the rotating body in the direction of the base end of the rotating body, and the ultrasonic radiation axis is provided. While changing the angle of the mirror provided above with respect to the ultrasonic transducer, the ultrasonic waves transmitted from the ultrasonic transducer are reflected diagonally forward to obtain an image diagonally forward in a predetermined range.

Furthermore, in the ultrasonic probe for body cavity according to the present invention, ultrasonic waves are transmitted and received by the ultrasonic transducer provided at the tip of the rotating body in the direction of the base end of the rotating body, and the radiation axis of the ultrasonic wave is transmitted. The ultrasonic wave sent from the ultrasonic oscillator is reflected diagonally forward while moving the mirror provided above to change the distance from the ultrasonic oscillator and the angle of the mirror with respect to the ultrasonic oscillator. An image in the diagonally front of a predetermined range is obtained.

Then, the ultrasonic diagnostic apparatus for body cavity according to the present invention displays the image of the diagonally forward direction obtained by reflecting the ultrasonic wave transmitted from the ultrasonic transducer in the diagonally forward direction, and displaying the image on the display means. The desired target portion displayed is indicated by the indicating means, the insertion amount of the intracorporeal ultrasonic probe into the body cavity is detected by the encoder, and the control means is indicated by the indicating means by the information from the encoder. The angle changing means and the distance changing means are controlled so as to continue capturing the desired target portion, and the angle changing means changes the angle of the mirror with respect to the ultrasonic transducer to a predetermined angle in sequence. The distance from the sound wave vibrator is sequentially changed to a predetermined distance.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an ultrasonic probe for body cavity according to the present invention.

Intracavity ultrasonic probe 46, FIGS. 1 and 2
As shown in FIG. 4, the long tube 10 is provided, and the rotating body 12 is rotatably arranged in the long tube 10. The base end of the rotating body 12 is larger than the base end of the tube 10. Exposed. The tip of the rotating body 12 is notched, and an ultrasonic transducer 14 for transmitting and receiving ultrasonic waves is arranged at the tip of the notch 12a with the ultrasonic wave transmitting / receiving surface facing the base end side. ing.

Further, a pair of rails 1 is provided in the cutout 12a.
8 is provided, and the moving member 20 slides on the rail 18. A stand 22 is erected on the moving member 20, and a mirror 16 for reflecting the ultrasonic wave transmitted from the ultrasonic transducer 14 is swingably supported at the tip of the stand 22. .. Further, a long wire 24 is connected to the stand 22, and the wire 24 is connected to a distance changing means 26 which will be described later. It is designed to move 16.

Further, the wire 2 is provided on both ends of the mirror 16.
8 and 30 are connected, and the wires 28 and 30 are connected to an angle changing means 32, which will be described later.
The angles of the mirror 16 with respect to the ultrasonic transducer 14 can be arbitrarily set by moving the 8 and 30 back and forth in the opposite direction.

Then, the intracorporeal ultrasonic diagnostic apparatus 44 equipped with the above-mentioned ultrasonic probe is, as shown in FIGS. 3 and 4, the insertion amount of the intracorporeal ultrasonic probe 46 into the coelomic cavity. The angle changing means 32 for changing the angle of the mirror 16 with respect to the ultrasonic transducer 14 based on the information from the encoder 34.
Also, a control unit 36 as a control unit for controlling the distance changing unit 26 for changing the distance of the mirror 16 from the ultrasonic transducer 14 is connected. Further, the control unit 36 includes a transmission / reception unit 38 and a monitor 4 as a display unit for displaying an image.
0 and an instruction means 42 for instructing a desired target portion displayed on the monitor 40 are connected.

Next, the operation of this embodiment will be described.

A transmission / reception unit 38 which receives a signal from the control unit 36
Sends a transmission / reception signal to the ultrasonic transducer 14, which causes the ultrasonic transducer 14 to transmit an ultrasonic pulse toward the mirror 16. Until the diagnosis target site is found, the angle of the mirror 16 is made gentle so that the front image is obtained as much as possible.

Then, the diagnostic target region 5 is displayed on the monitor 40.
When 0 is found, the operator instructs the control unit 36 to capture the diagnostic target portion by the instruction means 42. Then, the control unit 36 detects the insertion amount of the ultrasonic probe 46 for body cavity into the body cavity by the encoder 34, and the mirror 1
The angle changing means 32 is controlled so that the angle of 6 becomes an angle according to the insertion amount. The angle changing means 32 is the wire 2
8 and 30 are moved back and forth to set the angle of the mirror 16 to a desired angle as shown in FIG.

At this time, the control unit 36 controls the diagnostic target region 50.
The distance changing means 26 is controlled so that the ultrasonic beam is focused on. The distance changing means 26 moves the wire 24 forward and backward, moves the moving member 20 on the rail 18, and moves the positions of the stand 22 and the mirror 16 integrally with the moving member 20. Then, when the diagnostic target portion 50 comes to a position facing the mirror 16, the angle of the mirror 16 is set to 90 ° and the ultrasonic wave transmitted from the ultrasonic transducer 14 is transmitted to the mirror 16.
Is deflected by 45 ° and transmitted in a direction perpendicular to the ultrasonic probe 46 for body cavity. By performing the above operation while rotating the rotating body 12, an ultrasonic image of 360 ° centering on the ultrasonic probe 46 for body cavity can be obtained.

However, at positions other than the position where the diagnostic target portion 50 opposes the mirror 16, as shown in FIG. 6, the obtained image is conical section information, but the control unit 36 compresses this image. The circular compressed image 100 is displayed on the monitor 40.

In the above embodiment, the angle changing means changes the angle of the mirror with respect to the ultrasonic transducer and the distance changing means changes the distance of the mirror from the ultrasonic transducer to a predetermined distance. However, the present invention is not limited to this. Only one of the angle of the mirror with respect to the ultrasonic transducer and the distance of the mirror from the ultrasonic transducer may be changed.

[0028]

As described above, according to the present invention,
An ultrasonic wave is transmitted and received from the ultrasonic transducer provided at the tip of the rotating body in the direction of the base end of the rotating body, and a mirror provided on the radiation axis of the ultrasonic wave is moved to move the distance from the ultrasonic transducer. The ultrasonic wave sent from the ultrasonic transducer is reflected diagonally forward while changing or changing the angle of the mirror with respect to the ultrasonic transducer to obtain an image diagonally forward in a predetermined range. It is possible to easily recognize the position up to the diagnosis target site by obtaining the image of 1. and eliminate the possibility that the ultrasonic probe for body cavity may come into contact with the plaque in the blood vessel and peel off.

Further, an image of an oblique front is displayed on the display means, and the desired target portion displayed on the display means is designated by the designating means, and the insertion amount of the intracorporeal ultrasonic probe into the body cavity is determined. It is configured to control the angle changing means and the distance changing means so as to continue to capture the desired diagnostic target portion instructed by the instructing means by the information detected by the encoder, so that the diagnostic target portion is automatically detected. Can be continuously captured, and position recognition up to the diagnostic target site can be performed more easily.

[Brief description of drawings]

FIG. 1 is a sectional view showing an ultrasonic probe for body cavity according to the present invention.

FIG. 2 is a sectional view showing a main part of an ultrasonic probe for body cavity according to the present invention.

FIG. 3 is a block diagram showing the configuration of an ultrasonic diagnostic apparatus for body cavity according to the present invention.

FIG. 4 is a perspective view showing an ultrasonic diagnostic apparatus for body cavity according to the present invention.

FIG. 5 is a diagram for explaining the operation of the present invention.

FIG. 6 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a conventional ultrasonic probe for body cavity.

FIG. 8 is a cross-sectional view showing a conventional ultrasonic probe for body cavity.

FIG. 9 is a sectional view showing a conventional ultrasonic probe for body cavity.

10 is a plan view showing a main part of the ultrasonic probe for body cavity shown in FIG. 9. FIG.

[Explanation of Codes] 10 Tube 12 Rotating Body 14 Ultrasonic Transducer 16 Mirror 26 Distance Changing Means 32 Angle Changing Means 34 Encoder 36 Control Unit 40 Monitor 42 Instructing Means

Claims (4)

[Claims] 1. A long tube, a rotating body rotatably inserted in the long tube, and ultrasonic waves provided at the tip of the rotating body to transmit and receive ultrasonic waves in the proximal direction of the rotating body. The ultrasonic transducer includes a transducer and a mirror provided on the radiation axis of ultrasonic waves transmitted from the ultrasonic transducer and capable of freely changing the distance from the ultrasonic transducer. An ultrasonic probe for use in a body cavity, characterized in that a sound wave is reflected diagonally forward to obtain an image diagonally forward. 2. A long tube, a rotating body rotatably inserted in the long tube, and ultrasonic waves provided at the tip of the rotating body to transmit and receive ultrasonic waves in the proximal direction of the rotating body. The ultrasonic wave is provided with an oscillator and a mirror provided on the radiation axis of the ultrasonic wave transmitted from the ultrasonic oscillator and capable of freely changing the angle with respect to the ultrasonic oscillator, and the ultrasonic wave transmitted from the ultrasonic oscillator by the mirror. An ultrasonic probe for body cavity, which is characterized by reflecting obliquely forward to obtain an image of diagonally forward. 3. A long tube, a rotary body rotatably inserted in the long tube, and an ultrasonic wave which is provided at the tip of the rotary body and which transmits and receives ultrasonic waves in the proximal direction of the rotary body. An ultrasonic oscillator and a mirror provided on the radiation axis of ultrasonic waves transmitted from the ultrasonic oscillator and capable of freely changing the angle with respect to the ultrasonic oscillator and the distance from the ultrasonic oscillator are provided. An ultrasonic probe for a body cavity, characterized in that an ultrasonic wave sent from a sound wave transducer is reflected obliquely forward to obtain an image of the oblique front. 4. A long tube, a rotary body rotatably inserted in the long tube, and an ultrasonic transducer provided at the tip of the rotary body for transmitting and receiving ultrasonic waves in the proximal direction of the rotary body. ,
And an ultrasonic probe for body cavity, which is provided on the radiation axis of ultrasonic waves sent from the ultrasonic vibrator and comprises a mirror that can freely change the angle with respect to the ultrasonic vibrator or the distance from the ultrasonic vibrator. An encoder that detects the amount of insertion of the ultrasonic probe for body cavity into the body cavity, an angle changing unit that changes an angle of the mirror with respect to the ultrasonic transducer, and a distance from the ultrasonic transducer of the mirror The distance changing means for changing the angle, the control means for controlling the angle changing means and the distance changing means based on the information from the encoder, and the diagonally forward image obtained by reflecting the ultrasonic waves transmitted from the ultrasonic transducer forward diagonally. The display means for displaying and the instruction means for instructing the desired target portion displayed on the display means are provided, and the control means keeps capturing the desired target portion instructed by the instruction means. An ultrasonic diagnostic apparatus for body cavity, comprising controlling an angle changing unit and a distance changing unit.