JPS58118738A - Endoscopic 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 The present invention relates to an ultrasonic diagnostic apparatus, and particularly to an ultrasonic diagnostic apparatus for congratulations.

Conventional ultrasonic diagnostic apparatuses are mainly intended for diagnosis from outside the body, and there are limits to the ultrasonic diagnosis of the gastrointestinal system, such as the stomach and duodenum.

To this end, endoscopic ultrasound diagnostic equipment that attempts to diagnose from inside the body has been developed and used.

Its use is attracting attention.

Hereinafter, the configuration of a conventional ultrasonic diagnostic apparatus used in the past is shown in FIG. 1, and the structure of an ultrasonic transducer is shown in FIG. 2.

In Figure 1, 1 is a synchronous oscillation circuit, 2 is an excitation circuit, and 3 is a synchronous oscillation circuit.
4 is an endoscope, 4 is a scanning means, 5 is a function generation circuit, 6 is a cathode ray tube, and 7 is an amplifier circuit.

8 is a brightness modulation circuit.

The pulse output of the synchronous oscillation circuit 1 is converted into a high-frequency pulse and a pulse with a steep rise by an excitation circuit 2 for generating ultrasonic pulses, and then passed through the inner hole of the endoscope 3 and sent to the scanning means 4. Applied to the installed vibrator. On the other hand, the output of the synchronous oscillation circuit 1 passes through the inner hole of the endoscope 3 and is applied to the pulse motor shown in Fig. 2, and by electrically controlling forward and reverse rotation, the ultrasonic waves emitted from the transducer are Can scan the inside of the body.

The electrical signals transmitted to the scanning means 4 and the vibrator pass through the inner hole of the endoscope 3, thereby making it easier to insert the endoscope 3 into the body. In order to display an image that matches the direction of the ultrasonic waves emitted into the body from the transducer built into the scanning mechanism 4, the pulse output of the synchronous oscillation circuit 1 is converted into a waveform by the function generation circuit 5, and then transmitted to the X and Y of the cathode ray tube 6. The propagation direction of the ultrasonic waves applied to the electrodes is displayed as an image. Ultrasonic waves reflected from abnormal tissue within the body are amplified by an amplifier circuit 7, passed through a brightness modulation circuit 8, and displayed on a cathode ray tube 6 as a tomographic image.

FIG. 2 shows an embodiment of a mechanical scanning method for the vibrator 15 in this device. 3 is an endoscope.

9 is the autopsy window%, 10 is the inner hole, and 11 is the pulse motor.

12 is a micro gearhead, 13 is a rotating shaft, 14 is a damper, 15 is a vibrator, 16 is a pulse motor drive line, 17
is the excitation line of the vibrator, 18 is the rotating shaft support plate, and the two-dot chain line 19
is the case.

The outputs of the synchronous oscillation circuit and the excitation circuit in FIG. The pulse motor 11 is fixed to the mirror 3 and rotates at an angle corresponding to the number of output pulses of the synchronous oscillation circuit 1 shown in FIG.
The speed is reduced to a minute rotation angle by the micro gearhead 12.

The rotational force of the microhead 12 is transmitted to the damper 14 by the rotating shaft 13, and as the damper 14 rotates, ultrasonic waves are radiated into the body from the vibrator 15 bonded to the damper 14.

This can be easily done by inserting an endoscope with the above configuration into the body and visually inspecting it through the autopsy window to determine the diagnosis site, and then placing the ultrasonic transducer in close contact with it. In the case of a funeral ceremony using sound waves, ultrasonic waves are emitted while the transducer is in close contact with the area to be examined inside the body.The ultrasonic waves propagate into the body without attenuation, making it possible to depict clear images.

However, it is extremely difficult to insert the transducer into the body and bring the transducer surface, which emits ultrasonic waves, into close contact with the autopsy site on the inner wall of the stomach, for example, by operating from outside the body. That's true.

To solve this problem, a commonly used method is to wrap the outside of the vibrator part of the congratulatory ultrasound device with a balloon 20 as shown in Fig. 3, and to transmit υ ultrasound from outside the body into the balloon 20. The balloon 20 is inflated by injecting a medium 21 with good propagation, such as water or olive oil, and the balloon 20
is brought into close contact with the stomach wall 21'. When ultrasonic waves are emitted from the vibrator 15 in this state, the ultrasonic waves propagate within the medium 21, reach the stomach wall, and further propagate into the body.The reflected sound waves inside the body pass through the medium 21 again, causing vibrations. Return to child 15.

An endoscopic ultrasound device having such a configuration has the following problems. It is a balloon 2° wall and a vibrator 1
Multiple vibrations of the emitted ultrasonic waves occur between the two, which poses a problem in creating images.

In order to solve the above-mentioned problems, the present invention is characterized in that the ultrasonic wave emitting section can be brought into close contact with the autopsy site.The details of the present invention will be described below with reference to the drawings.

FIG. 4 is a diagram showing the configuration of one embodiment of the present invention.
FIG. 4(a) is a sectional view taken along line AA' in FIG. 4(b).

In the figure, a plurality of balloons 22 are attached to the back of the case 19 of the ultrasonic emitting unit, and each balloon 22 is connected to the conduit 2.
The number 3 and 9 are added and it connects to the outside of the body.

Therefore, by injecting gas or liquid into the balloon 22 through this conduit 23 and inflating the balloon, the case 19 is pressed against the autopsy site, and the vibrator 15 is brought into close contact with the wall of the internal organ. When ultrasonic waves are emitted in this state, the ultrasonic waves can efficiently propagate inside the body. You can prevent image quality from deteriorating.

By providing a plurality of balloons 22, the p case can be stably supported by increasing the number of fulcrums that support the p case by controlling the degree to which each balloon 22 is inflated, as shown in FIG. .

Furthermore, when the autopsy area is the esophagus or trachea, the balloon 20 is inflated to fill one esophageal air tube in the conventional method described in FIG. However, according to the present invention, this problem can be eliminated.

As mentioned above, by providing a balloon on the back of the endoscope, the ultrasonic wave emitting section can be brought into close contact with the autopsy site with ease, and a clear image can be obtained, which has a remarkable effect.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams showing the configuration of a conventional endoscopic ultrasound system and details of the ultrasound generating part; Figure 3 is a diagram showing an example of the conventional endoscopic ultrasound diagnostic system during autopsy; FIG. 4 is a diagram showing an embodiment of the main part of the present invention, and FIG. 5 is a diagram illustrating its operating state. Agent Patent Attorney Toshiyuki Usuda Z 9 225- No. 3 Figure 2/'

Claims (1)

[Scope of Claim] In an ultrasonic diagnostic device configured to include an ultrasonic transmitter/receiver placed in a living body and a means for operating the ultrasonic transmitter/receiver at a position separated from the body, the What is claimed is: 1. An ultrasonic diagnostic device for congratulations, characterized by comprising a support portion made of a material whose shape can be controlled.