JPH0592004A - Ultrasonic diagnosing device - Google Patents

Abstract

PURPOSE:To eliminate the pains on a patient at the time of inserting the inserting part of the ultrasonic diagnosing device to be inserted into a body cavity by shortening the length of the hard part at the front end of the inserting part. CONSTITUTION:The above-mentioned hard part consists of an observation window 23 for observing a testee body provided at the front end 5 of the inserting part of the ultrasonic diagnosing device and an illuminating window 24 which exists along side this observation window 23 and illuminates the testee body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic diagnostic apparatus having an endoscope function which is used by inserting it into a body cavity.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
The ultrasonic wave transmission / reception scanning part b arranged at the distal end portion of the insertion part a of the ultrasonic diagnostic apparatus is surrounded by an inflatable and deflatable balloon c filled with an ultrasonic wave propagation medium liquid, and the ultrasonic wave is transmitted through this balloon c. Is transmitted to the wall of the body cavity. An observation window portion d is also provided at the front end portion of the insertion portion a at the rear (hand side) of the ultrasonic transmission / reception scanning portion b.

This observation window portion d is provided, for example, in Japanese Patent Laid-Open No. 55-9.
As shown in Japanese Patent No. 4232, the observation window and the illumination window are arranged in the insertion axis direction.

[0004]

In other words, the ultrasonic transmission / reception scanning section, the observation window and the illumination window are arranged side by side in the insertion axis direction from the distal end, and the length of the hard portion at the distal end of the endoscope becomes long. It had the drawback.

Therefore, when the ultrasonic diagnostic apparatus is inserted into a body cavity, the patient may suffer more pain than necessary because the rigid length is long. Also, the site where it can be inserted has been limited.

The present invention has been made in view of the above circumstances. An object of the present invention is to provide an ultrasonic diagnostic apparatus which does not cause pain to a patient at the time of insertion by shortening the hard length of the tip of the insertion section. To do.

[0007]

This ultrasonic diagnostic apparatus is
An ultrasonic transmission / reception section provided at the tip of the insertion section, and an observation window located behind the ultrasonic transmission / reception section for observing the subject,
It is provided with an illumination window located on the side of this observation window and illuminating the subject.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS.

In the figure, reference numeral 1 denotes a flexible insertion portion to be inserted into a body cavity, and this insertion portion 1 is connected to an operation portion 2 on the operating side. Further, a bendable bending portion 3 is provided at the distal end portion of the insertion portion 1. The bending portion 3 can be bent at a desired bending degree via a transmission wire (not shown) by rotating a bending operation knob 4 provided on the operation portion 2.

An observation window portion 6 and an ultrasonic wave transmission / reception scanning portion 7 are provided at the tip end portion 5 located on the tip end side of the bending portion 3. As shown in detail in FIG. 3, the ultrasonic transmission / reception scanning unit 7 has an ultrasonic transducer 8 housed therein. The ultrasonic transducer 8 is rotatable with the shaft portion 9 in the circumferential direction of the tip portion 5. The shaft portion 9 has a tip forming member 5a through bearings 10 such as bearings.
It is supported by and is rotated by a drive shaft (not shown).

Reference numeral 11 is a signal line for transmitting an ultrasonic wave signal, and 12
Is a damper material, and the damper material 12 has a function of absorbing ultrasonic waves transmitted to the rear of the ultrasonic transducer 8. Further, the ultrasonic wave propagation medium liquid 13 is filled around the ultrasonic vibrator 8, and liquid tightness is maintained by a plastic cap 14.

A balloon 15 that surrounds the outside of the ultrasonic transmission / reception scanning unit 7 is attached. The balloon 15 is made of an elastic and contractible material, and can be expanded and contracted by taking the ultrasonic propagation medium liquid 17 in and out through the liquid supply path 16.

A recess 20 is formed near the outside of the balloon 15. The recess 20 is formed by cutting the side surface of the metallic tip forming member 5a, and is provided with an inclined surface 21 that becomes deeper on the ultrasonic transmission / reception scanning unit 7 side. The observation window portion 6 is arranged on the inclined surface 21.

As is apparent from FIG. 4, the observation window portion 6 includes the observation window 23 provided with the objective lens system 22 and the illumination window 24 provided on the side of the observation window 23. It consists of members. An entrance end of an image guide 25 using an optical fiber or the like is opposed to the objective lens system 22, and an exit end side of the image guide 25 is guided to an eyepiece part 26 through the inside of the insertion part 1. . On the other hand, the lighting window 2
An output end of a light guide (not shown) faces the inside of the light guide 4, and an incident end side of the light guide passes through the universal cord 27 and can be connected to a light source device (not shown) through a connector portion 28. ing.

The inclined surface 21 is provided with an air / water supply nozzle 30 and a suction port 31. A channel tube 32 communicates with this suction port, and suction can be performed through this channel tube.
A tube 33 connected to an air / water supply source is connected to the air / water supply nozzle 30.

In the ultrasonic diagnostic apparatus constructed as described above, the insertion portion 1 is inserted into the body cavity with the balloon 15 contracted. Then, while observing the inside of the body cavity through the observation window portion 6, the ultrasonic wave transmission / reception scanning portion 7 is positioned at the target diagnostic site A. Then, the ultrasonic propagation medium liquid 17 is fed into the balloon 15 through the liquid feed path 16 to inflate the balloon 15. Then, the bending operation knob 4 is operated to bend the bending portion 3 to bring the balloon 15 into close contact with the site A to be diagnosed.

Since this enables ultrasonic waves to propagate, the ultrasonic vibrator 8 is rotated around the axis of the tip portion 5 while transmitting ultrasonic waves from the ultrasonic vibrator 8 by an ultrasonic driving device (not shown). The transmitted ultrasonic wave is the part to be diagnosed A
The echo wave is reflected by the internal tissue of the ultrasonic wave and is received by the ultrasonic transducer 8. Then, the echo wave signal is transmitted through the signal line 11, subjected to image processing, and displayed as an ultrasonic tomographic image on a display device (not shown). Further, in order to deflate the balloon 15, the ultrasonic propagation medium liquid 17 is discharged through the liquid supply path 16.

As described above, since the illumination window is located on the side of the observation window, the rigid length of the tip can be shortened, and the patient is distressed when the ultrasonic diagnostic apparatus is inserted into the body cavity. Never give. In addition, the site where it can be inserted without causing pain to the patient also expands.

In the above embodiment, the observation window is provided on the inclined surface 21 to incline the observation direction to the balloon side. However, for example, a so-called perspective observation optical system in which the optical axis itself is inclined to the front side is adopted. For example, when the balloon enters the visual field, the inclined surface is not always necessary.

[0020]

As described above, according to the present invention, since the illumination window is provided on the side of the observation window located in the observation window portion, the length of the hard portion at the tip can be shortened, and at the time of insertion. It does not cause pain to the patient and cannot limit the insertion site. In addition, the tip of the insertion portion does not become large, and it can contribute to downsizing of the tip portion, which is a great effect.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a tip portion of a conventional ultrasonic diagnostic apparatus.

FIG. 2 is a side view of the ultrasonic diagnostic apparatus according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view of the tip of one embodiment of the present invention.

FIG. 4 is a plan view of an observation window portion of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insertion part 5 Tip part 6 Observation window part 7 Ultrasonic wave transmission / reception scanning part 8 Ultrasonic transducer 15 Balloon 20 Recessed part 23 Observation window 24 Illumination window

Claims (1)

[Claims] 1. An ultrasonic wave transmitting / receiving section provided at the tip of an insertion section, an observation window located behind this ultrasonic wave transmitting / receiving section for observing a subject, and an object located on the side of this observation window. An ultrasonic diagnostic apparatus comprising: an illumination window for illuminating.