JPS618037A - Ultrasonic diagnostic apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an ultrasonic diagnostic apparatus that obtains a predetermined diagnostic image of a subject using a probe that transmits and receives ultrasonic waves. The present invention relates to an ultrasonic diagnostic device configured to provide accurate display.

Ultrasonic diagnostic devices are harmless compared to X-ray devices and can be used repeatedly, so they are widely used as medical devices for non-invasively obtaining tomographic images of living bodies such as the human body.

Such ultrasonic diagnostic equipment is configured to transmit all ultrasonic waves using an electroacoustic transducer installed in the glove, receive the reflected ultrasonic waves, and display an image. Diagnosis of minute tissues is performed.

On the other hand, in clinical medicine, depending on the results of such a diagnosis, there may be a demand for collecting cells from a very small part of a living body that is thought to be a lesion and conducting a detailed examination. In such a case, cells are collected after inserting the puncture into the living body and confirming that the tip of the puncture is positioned at a predetermined location while visually observing the above-mentioned image.

Therefore, in such an ultrasonic diagnostic apparatus, it is desired that the image be such that the tip of the puncture can be reliably inserted into the location where cells are to be collected while visually viewing the image.

[Conventional technology]

Conventionally, such an ultrasonic diagnostic apparatus has been constructed as shown in FIG.

FIG. 2(a) is a block diagram showing the configuration, and FIG. 2(b) is an explanatory diagram illustrating puncture detection.

(A) As shown in Figure 1, the probe 3 receives the oscillation signal output from the transmitter 2 under the control of the timing controller 1, transmits an ultrasonic wave, receives the reflection, and transmits the received signal to the receiver. This received signal is sent to the image forming section 6 from the receiving section 5 under the control of the timing control section 1 to form an image signal V, and the image is outputted to the display section 7. Probe control Part 4 is an electric sound 4 installed inside the probe 3.
It is configured to control the driving of one conversion element.

Therefore, the display unit 7 is configured to display a predetermined diagnostic image by transmitting ultrasonic waves from the probe 3.

With this configuration, when detecting a puncture, ('b
) This was done as shown in the figure.

The probe 3 in close contact with the body surface 8A is provided with an electroacoustic transducer element 11, and the element 11 transmits and receives ultrasonic waves in response to signals transmitted and received via the cable 3A. Therefore, when the needle of the puncture 9 is inserted toward the affected area 10 that appears to be a lesion in the living body 8, the needle is displayed as an image on the display unit 7 by the ultrasound transmitted from the element 11. That picture 0? The needle is inserted so that the distal end 9A of the needle reaches the affected area 10 while visually checking, and cells from the affected area 10 are collected.

[Problem that the invention seeks to solve]

In such a configuration, most of the ultrasonic waves transmitted from the element 11 in the direction of arrow B are reflected in the direction of arrow C, so that the ultrasound reflected from the needle inserted into the living body 8 as shown in FIG. The reflected wave received by 11 is minute. Therefore, in the image displayed on the display unit 7, the image of the needle is unclear, and the position of the tip 9A cannot be accurately determined.

Therefore, in order to clarify the position of the tip 9A of the needle, generally, by swinging the puncture 9 in the direction of the arrow, a tissue change is caused at the contact area between the needle and the living body 8. This was done using images obtained from reflected waves.

However, accurately determining the position of the tip based on the image obtained by swinging the puncture 9 requires a certain degree of skill, and there is a problem that only a specific person can do this.

[Failure to solve the problem]

The above-mentioned problem is that the probe is equipped with a detection means for detecting the insertion amount of the puncture into the subject, and the detection means calculates the position of the tip of the puncture, and the calculated result is This problem is solved by an ultrasonic diagnostic apparatus equipped with an arithmetic unit that outputs the information to an image creation unit.

[Effect]

That is, the insertion amount of the puncture is detected by a detection means provided on a probe that is in close contact with the body surface of the subject, and the detected signal is sent to the calculation unit, which calculates the position of the tip of the puncture. This calculated position is displayed on the display section via the image creation section.

Therefore, the tip of the puncture can be clearly displayed in the diagnostic image displayed on the display unit.

〔Example〕

The present invention will be explained in detail below with reference to an embodiment shown in FIG. In the figure, (a) is a block diagram showing the configuration, ('
b) The figure is an explanatory diagram of the probe. The same reference numerals indicate the same objects throughout the figures.

(a) As shown in the figure, a calculation unit 21 is provided which receives a signal from the probe 20 that detects the insertion amount of the puncture, the calculation unit 2 calculates the position of the tip of the puncture, and the calculation result is sent to the image creation unit. The second
It has the same configuration as the figure.

The amount of insertion of the puncture can be detected, for example, by forming the probe 20 as shown in FIG.

The probe 20 is provided with a through hole 20B into which a puncture is inserted, a roller 22 formed to protrude into the through hole 20B, and a rotation detector 23 that detects rotation of the roller 22. Therefore, the needle of the puncture 9 is guided to the through hole 20B and inserted in the direction of arrow A, so that the roller 22
is rotated in the direction of arrow B, and the insertion amount is detected by the rotation detector 23. This detection signal is output via cable 20A.

With this configuration, even if the position of the puncture 9 is unclear in the image as described above, the insertion amount of the puncture 9 can be detected by the rotation detector 23, and furthermore, the calculation unit 21 can detect the insertion amount of the puncture 9. Since the position of the tip is calculated, the image creation unit 6 can add a display indicating the tip of the puncture 9 to the image of a predetermined diagnostic image.

FIG. 3 is an explanatory diagram comparing a conventional diagnostic image with that of the present invention; FIG. 3(a) shows the conventional diagnostic image, and FIG. 3(b) shows the diagnostic image of the present invention.

In the diagnostic image including the blood vessel image 8B and the affected area image 10A, in the case of the (&) diagram, the puncture image 9B is unclear and it is difficult to determine the position of the tip. However, in the case of figure ('b), a predetermined mark such as an arrow mark 24 can be added to the tip of the puncture image 9B, so it is not possible to accurately judge the entire tip of the puncture 9. can.

〔Effect of the invention〕

As explained above, according to the present invention, the position of the tip of the puncture 9 can be reliably displayed with a predetermined mark on the diagnostic image. Therefore, unlike the conventional technique, even if a person is not an expert, cells can be reliably collected from the affected area 10 through the puncture 9, and the reliability of diagnosis can be improved, and the practical effect is excellent.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of an ultrasonic diagnostic apparatus according to the present invention, (&) is a block diagram, Fig. (b) is an explanatory diagram, and Fig. 2 is a conventional ultrasonic diagnostic apparatus. Block diagram, (1)
) is an explanatory diagram, and FIGS. 3(a) and 3(b) are explanatory diagrams of images comparing the conventional method and the present invention. In the figure, 1 is a timing control section, 2 is a transmission section,
3. 2ou probe, 4 a probe control unit. 5 is a receiving section, 6 is an image creation section, 7 is a display section, 8 is a living body,
9 is a puncture, 10 is an affected area, 11 is an electroacoustic transducer, 21
22 indicates a calculation unit, 22 rollers, 23 a rotation detector, and 24 arrow marks.

Claims (1)

[Claims] comprising a probe that transmits and receives ultrasonic waves, an image creation section that forms image data using data received by the probe, and a display section that displays an image using the image data,
An ultrasonic diagnostic apparatus that obtains a predetermined diagnostic image by bringing the probe into close contact with a subject, wherein the probe is provided with a detection means for detecting the amount of puncture inserted into the subject; An ultrasonic diagnostic apparatus comprising: a calculation unit configured to calculate the position of the tip of the puncture by the detection unit and output the calculation result to the image creation unit.