JPH0584250A - Ultrasonic diagnostic device - Google Patents

Abstract

PURPOSE:To provide the device which prevents a fact that a coelom wall adheres closely and closes up a suction port even if a suction is executed. CONSTITUTION:The device is provided with an ultrasonic transmitting/receiving part 7 provided in the tip of an inserting part, a recessed part 20 positioned in the rear of this ultrasonic transmitting/receiving part 7, and also, formed on the side face of the tip part, and an opening part of a suction duct line in the vicinity of a bottom part of this recessed part.

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. Further, a suction port for sucking body fluid and the like was opened.

[0004]

In the state shown in FIG. 1, the suction port provided on the side surface of the insertion portion is sucked, and the wall of the body cavity is closely attached to the suction port to be blocked. There is a drawback that it can not be done or it damages the wall of the body cavity.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an ultrasonic diagnostic apparatus in which the wall of the body cavity does not come into close contact with the suction port even when suction is performed.

[0006]

This ultrasonic diagnostic apparatus is
An ultrasonic transmission / reception section provided at the tip of the insertion section, a concave section formed behind the ultrasonic transmission / reception section and formed on a side surface of the distal end section, and at least an opening of the suction conduit near the bottom of the concave section. It is characterized by the provision of.

[0007]

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 which is inserted into a body cavity, and the 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 has an observation window 23 having an objective lens system 22 and an illumination window 24.
Etc. consists of optical members necessary for observation. An image guide 25 using an optical fiber or the like for the objective lens system 22.
Of the image guide 25 is guided to the eyepiece portion 26 through the inside of the insertion portion 1. On the other hand, the emission end of a light guide (not shown) faces the inside of the illumination window 24, and the incident end side of this light guide passes through the universal cord 27 and is connected to a light source device (not shown) via the connector portion 28. You can do it.

The inclined surface 21 is provided with an air / water supply nozzle 30 and a suction port 31. As is clear from FIG. 3, the suction port 31 is formed in the vicinity of the bottom of the inclined surface 21, and the channel tube 32 is in communication therewith so that 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 section 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 ultrasonic waves can be propagated by this, 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.

Further, the suction port 3 is provided near the bottom of the inclined surface 21.
Since 1 is open, even if suction is performed, the body cavity wall does not stick to the suction port 31, and the suction operation can be performed safely.

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.

[0019]

As described above, according to the present invention, since the opening of the suction conduit opens near the bottom of the recess, the body cavity wall does not stick to the opening even if suction is performed. Its effect is great, such as safe suction operation.

[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 vibrator 15 Balloon 20 Recessed part 31 Suction port

Claims (1)

[Claims] 1. An ultrasonic wave transmitting / receiving section provided at the tip of an insertion section, a concave section formed behind the ultrasonic wave transmitting / receiving section and formed on a side surface of the distal end section, and at least sucked near the bottom of the concave section. An ultrasonic diagnostic apparatus having an opening of a duct.