JPH06169922A - Balloon installation method for ultrasonic diagnostic equipment - Google Patents

Abstract

PURPOSE:To provide a balloon mounting method for an ultrasonic diagnostic apparatus which enables the mounting of a balloon easily and accurately so as to expand larger in the direction of transmitting or receiving ultrasonic waves. CONSTITUTION:A balloon 6 free to expand is mounted surrounding an ultrasonic probe 2 provided at the tip 1 of an inserting part so that ultrasonic waves are transmitted or received being turned to a part of an examinee and a liquid is fed into the balloon 6 to expand it. In this balloon mounting method for an ultrasonic diagnosing apparatus, the balloon 6 is mounted at the tip 1 of the inserting part with the plane on the rear more tensioned as compared with the plane on the side in the direction 3 of transmitting or receiving the ultrasonic waves.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a balloon of an ultrasonic diagnostic apparatus, in which a balloon for feeding and inflating a liquid is attached so as to surround an ultrasonic probe.

[0002]

2. Description of the Related Art When an ultrasonic probe is used to obtain a tomographic image in a body cavity, generally, at least 2 to 2 is provided between the ultrasonic probe and the part to be examined because of the relationship with the depth of focus of the ultrasonic probe. It is necessary to take a space of about 3 cm.

Further, since ultrasonic waves are easily transmitted in a liquid but are difficult to be transmitted in the air, it is necessary to fill the space between the ultrasonic probe and the portion to be inspected with a liquid such as deaerated water having good ultrasonic transmission. is there.

Therefore, in an ultrasonic endoscope or the like, in general, an expandable and contractible balloon is provided so as to surround the distal end of an insertion portion provided with an ultrasonic probe, and a balloon inflated by injecting a liquid is used as a subject. It is pressed against and used.

When inflating such a balloon, it is desirable that the amount of liquid injected into the balloon is as small as possible, and the balloon is in contact with a target site over a wide area, and an appropriate space is provided between the balloon and the ultrasonic probe. It is desirable that

Therefore, conventionally, the surface of the balloon on the ultrasonic wave emitting and receiving direction side is formed thinner than the surface on the rear surface side thereof, or the balloon is adhered to the rear surface of the ultrasonic wave emitting and receiving direction.
The balloon was inflated to a larger extent in the ultrasonic wave transmitting / receiving direction.

[0007]

However, since it is not easy to distinguish the balloon whose thickness is changed depending on the direction, there is a drawback that the mounting direction is apt to be wrong when the balloon is mounted on the distal end of the insertion portion. Further, adhering the balloon to the surface on the back side in the ultrasonic wave transmitting / receiving direction has a drawback that the work is troublesome.

Therefore, an object of the present invention is to provide a method of attaching a balloon to an ultrasonic diagnostic apparatus, which allows the balloon to be easily and accurately attached so that the balloon is largely inflated in the ultrasonic wave transmitting / receiving direction.

[0009]

In order to achieve the above object, a method of attaching a balloon of an ultrasonic diagnostic apparatus of the present invention is provided at the tip of an insertion portion so as to emit and receive ultrasonic waves toward a subject. An inflatable and deflatable balloon is attached to surround the ultrasonic probe, and a balloon is attached to the balloon in a method for attaching an ultrasonic diagnostic apparatus in which a liquid is fed into the balloon to inflate the balloon. It is characterized in that it is attached to the distal end of the insertion portion in a state in which the surface on the back side thereof is tensioned as compared with the surface on the reception direction side.

[0010]

Embodiments will be described with reference to the drawings. FIG. 2 shows the overall configuration of the ultrasonic endoscope, in which the distal end body 1 is attached to the distal end of a flexible insertion portion 20 which is inserted into a body cavity of a patient.
Is provided.

The tip body 1 is provided with an objective optical system for obtaining an optical image of the surface of the subject and an ultrasonic probe for obtaining an ultrasonic tomographic image of the subject. In addition, the distal end side of the insertion portion 20 has a bending portion 2 that can be flexibly bent by remote control.
1 is formed.

An operation portion 30 is connected to the base end side of the insertion portion 20. The operation section 30 includes a bending operation knob 31 for remotely operating the bending state of the bending section 21, a treatment instrument insertion port 3a for inserting a treatment instrument into a forceps channel, an air supply nozzle and a water supply nozzle (not shown). An air / water supply switch 32 that performs an operation of ejecting air and water, and a suction switch 33 that performs a suction operation via a forceps channel or the like.
Etc. are provided.

Reference numeral 34 is a water inlet for feeding a liquid such as deaerated water into the balloon 6 when the balloon 6 is attached to the tip end main body 1. Reference numeral 35 is a suction conduit switching lever for switching the suction conduit to either a forceps channel or a drain conduit (not shown) from the balloon 6.

An eyepiece 40 having a built-in eyepiece is projectingly provided on the operation portion 30, and the proximal end side of the image guide fiber bundle inserted into the endoscope insertion portion 20 is arranged at its observation position. There is. Therefore, the optical image of the surface of the subject portion formed by the objective optical system can be observed through the eyepiece 40.

Reference numeral 50 is a connector for connecting the incident end of the light guide fiber bundle for illumination to the light source device, 51 is an air / water supply socket, 52 is a vent mouthpiece, 53 is a suction nipple, and 54 is a functional ground terminal. is there. Also, 60
Is a processing circuit that performs electrical processing on the ultrasonic probe. 61 is a C for displaying and observing an ultrasonic tomographic image.
It is an RT monitor.

FIG. 1 shows the vicinity of the tip body 1.
Reference numeral 2 is a convex type ultrasonic probe, and the side of the tip end main body 1 is scanned by electronic scanning. Reference numeral 3 is the scanning range (that is, the ultrasonic wave transmitting / receiving direction).

The optical observation window and the illumination window are arranged on the slope 4 immediately behind the ultrasonic probe 2, and the rear portion 1a has an objective optical system and image transmission means built therein. .

An inflatable and deflatable balloon 6 made of, for example, thin silicon rubber is detachably attached so as to surround the tip end main body 1 in the portion where the ultrasonic probe 2 is provided. 6 a is the head of the balloon 6 and 6 b is the mouth of the balloon 6.

Reference numerals 7 and 8 are O-rings for elastically binding and fixing the balloon 6 to the body 1 of the tip portion, and a proximal groove 10 formed on the outer periphery of the body 1 of the tip portion before and after sandwiching the ultrasonic probe 2. And the front side groove 11 to engage with the groove 1
The balloon 6 is fixed between 0 and 11.

Reference numeral 9 is an outlet hole communicating with the water inlet 34. When a water injector is attached to the water inlet 34 and deaerated water or the like is sent out from the water injector 34, the deaerated water is discharged into the balloon 6 from the outlet hole 9. The balloon 6 is inflated and inflated.

When degassed water is injected into the balloon 6, the balloon 6 moves in the ultrasonic wave transmitting / receiving direction 3 as shown in FIG.
Swells to the side and slightly to the back. This is because the balloon 6 is attached to the tip portion main body 1 by the method described below.

3 to 7 show a first embodiment of the balloon mounting method of the present invention. As shown in FIG. 3, the balloon 6 is formed in the shape of a finger sack, is covered from the distal end side with respect to the distal end portion main body 1, and is further fitted with a first O-ring 7 from the distal end side. .

Then, as shown in FIG. 4, the mouth portion 6 of the balloon 6 mounted so as to surround the ultrasonic probe 2.
The side b is tightly bound to the proximal groove 10 by the first O-ring 7.

Then, next, an empty syringe or the like is attached to the water injection port 34, and air is sent into the balloon 6, so that FIG.
The balloon 6 is inflated as shown in FIG. Then, the balloon 6 is inflated uniformly as a whole. If there is a hole in the balloon 6, there is air leakage, so that check can also be performed here.

Then, as shown in FIG. 6, the balloon 6 is pushed in the direction of arrow A from the back side in the ultrasonic wave transmitting / receiving direction, and the balloon 6 is pressed tightly against the back side surface of the tip end main body 1. In the state, the air in the balloon 6 is injected into the water inlet 3
Pull out to side 4.

Then, the balloon 6 contracts as shown by the chain double-dashed line in FIG. 6, but the surface of the balloon 6 in the direction of transmitting and receiving ultrasonic waves becomes slightly slackened, and the surface on the back side is taut and taut. It becomes a state.

Therefore, as shown in FIG. 7, a second O-ring 8 is fitted into the front groove 11 from above the balloon 6, and the head portion 6a of the balloon 6 is attached to the tip end main body by the second O-ring 8. Fixed to 1.

By doing so, the balloon 6
1 is attached to the tip end main body 1 in a state in which the surface in the ultrasonic wave transmitting / receiving direction is slack and the back surface thereof is strained, and then, by injecting deaerated water into the balloon 6 from the water injection port 34, as shown in FIG. As described above, the balloon 6 is greatly inflated in the ultrasonic wave emitting / receiving direction, and a large tension is applied to the back surface side thereof, so that the balloon 6 is inflated only slightly.

FIG. 8 shows a second embodiment of the present invention, in which the shape of the balloon 6 is formed in a curved shape in which the tip side is warped toward the back side. Others are the same as those in the first embodiment described above.

With this structure, when the mouth portion 6b of the balloon 6 is fixed to the hand side groove 10 with the first O-ring 7, the front side of the balloon 6 projects to the back side as shown in FIG. When air is injected into the balloon 6, as shown in FIG. 10, the balloon 6 largely swells to the back side.

Therefore, from that state, as shown by the arrow B, if the balloon 6 is brought into close contact with the back side of the tip end main body 1, the balloon 6 becomes very natural and is tense on the back side, and ultrasonic waves are transmitted and received. There is a slack in the direction. The balloon mounting method is the same as that of the first embodiment except for the above.

FIG. 11 shows a third embodiment of the present invention, in which the second O-ring 8 is integrally formed on the portion of the balloon 6 near the tip. In this case, similarly to the second embodiment, the balloon 6 is formed in a shape that is curved toward the back side, and the second O-ring 8 is also formed inclining correspondingly.

Therefore, in the case of this embodiment, the mouth portion 6b of the balloon 6 is attached to the hand side groove 10 by the first O-ring 7.
12, the second O-ring 8 is simply fitted into the front groove 11 as shown in FIG. 12, and the surface of the balloon 6 in the ultrasonic wave transmitting / receiving direction is slackened without injecting air. It is attached to the tip body 1 in a state where the back side is strained.

In the second and third embodiments,
The balloon 6 has to be attached to the tip end body 1 in a predetermined direction, but since the balloon 6 is formed in a warped shape, the direction can be easily visually recognized, and the balloon 6 can be easily attached in the correct direction. be able to.

The present invention is not limited to ultrasonic endoscopes, and can be widely applied to balloon attachment methods for general ultrasonic diagnostic equipment.

[0036]

According to the method for attaching a balloon of the ultrasonic diagnostic apparatus of the present invention, the balloon is attached to the distal end of the insertion portion in a state in which the rear surface of the balloon is tensioned as compared to the ultrasonic transmission / reception direction side surface. Therefore, when the liquid is fed into the balloon to inflate it, the balloon swells greatly in the ultrasonic wave transmitting / receiving direction, but does not swell much on the back side.
Therefore, it is possible to widely push the balloon to the target site with a small amount of liquid injection to maintain the distance between the ultrasonic probe and the test portion, and moreover, to easily and accurately attach the balloon to the insertion portion. it can.

[Brief description of drawings]

FIG. 1 is a side view of a distal end portion of an ultrasonic endoscope according to a first embodiment.

FIG. 2 is an overall external view of the ultrasonic endoscope of the first embodiment.

FIG. 3 is an explanatory diagram of a balloon mounting process of the first embodiment.

FIG. 4 is an explanatory diagram of a balloon mounting process of the first embodiment.

FIG. 5 is an explanatory diagram of a balloon mounting process according to the first embodiment.

FIG. 6 is an explanatory diagram of a balloon mounting process of the first embodiment.

FIG. 7 is an explanatory diagram of a balloon mounting process according to the first embodiment.

FIG. 8 is an explanatory diagram of a balloon mounting process of the second embodiment.

FIG. 9 is an explanatory diagram of a balloon mounting process of the second embodiment.

FIG. 10 is an explanatory diagram of a balloon mounting process of the second embodiment.

FIG. 11 is an explanatory diagram of a balloon mounting process of the third embodiment.

FIG. 12 is an explanatory diagram of a balloon mounting process of the third embodiment.

[Explanation of symbols]

 1 tip part main body 2 ultrasonic probe 3 ultrasonic wave transmitting / receiving direction 6 balloon 7,8 O-ring 10,11 groove

Claims (1)

[Claims] 1. An inflatable and deflatable balloon is attached so as to surround an ultrasonic probe provided at the tip of an insertion portion so as to emit and receive ultrasonic waves toward a subject to be inspected, and a liquid is fed into the balloon so that In a method for attaching a balloon of an ultrasonic diagnostic apparatus, which is designed to inflate a balloon, the balloon is attached to the tip of the insertion portion in a state in which the surface on the back side of the balloon is strained compared to the surface on the side of transmitting and receiving ultrasonic waves. A method for attaching a balloon of an ultrasonic diagnostic apparatus, which is characterized by attaching.