JP2002301020A - Medical fixed balloon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical fixed balloon capable of reducing an operator's load and an examee's pain by increasing the allowable range of the internal pressure of the balloon for reducing the time of an operation. SOLUTION: The medical fixed balloon 18 (22) is inserted into body cavity and can be fixed within the body cavity by supplying air into it to inflate it. Protruding and recessed parts 30 which help to fix the balloon within the body cavity are formed at least on the surface of the portion 32 of the balloon making contact with the wall of the body cavity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical fixed balloon, and more particularly, to a medical fixed balloon inserted into a body cavity so as to be fixed.

[0002]

BACKGROUND OF THE INVENTION In general,
The medical fixed balloon is attached to a distal end portion of a device inserted into a body cavity, for example, a catheter, and fixes the catheter or the like by inflating the balloon in the body cavity.

[0003] In such a balloon, when the internal pressure is too high, the subject suffers, and in addition, the wall of the body cavity may be damaged or the balloon may be ruptured. .

The width of the balloon pressure in consideration of the safety and effectiveness is relatively narrow, and the inner diameter of the body cavity wall varies from person to person. Therefore, it is necessary to set the balloon pressure to satisfy these conditions.

Injecting air into the balloon is performed by a practitioner using a syringe or the like, and the practitioner inflates or deflates the balloon with the syringe or the like every time the balloon is inflated. However, it had to be adjusted while measuring the internal pressure by experience, which was time-consuming, and the burden on the practitioner as well as the pain of the subject was great.

An object of the present invention is to provide a medical fixed balloon which can reduce the burden on the practitioner and the pain of the subject by shortening the treatment time by expanding the allowable range of the balloon internal pressure.

[0007]

In order to achieve the above object, a medical fixed balloon according to the present invention is inserted into a body cavity, and is supplied with air therein to be inflated so that the balloon can be fixed in the body cavity. The medical fixed balloon is characterized in that a fixation assisting portion, which assists fixation when fixed in a body cavity, is formed at least on a surface in contact with the body cavity wall.

According to the present invention, the fixing auxiliary portion formed on the surface comes into contact with the body cavity wall, and the balloon can be firmly fixed to the body cavity wall. As a result, the internal pressure of the balloon in consideration of safety and effectiveness is improved. Can greatly reduce the time required for the treatment and reduce the burden on the practitioner and the pain of the subject.

In the present invention, the fixing auxiliary portion may be an uneven portion.

[0010] With such a configuration, the uneven portion comes into contact with the body cavity wall, and the balloon can be firmly fixed to the body cavity wall. Become.

Further, the fixing auxiliary portion may be a protruding portion formed in a direction intersecting with a direction of insertion into a body cavity.

With such a configuration, the protruding portion comes into contact with the body cavity wall, and the balloon can be firmly fixed to the body cavity wall, and the protruding portion intersects the insertion direction into the body cavity. As a result, it acts as a stopper.

In the present invention, the endoscope is attached to the outer periphery of the distal end of the endoscope, and can be used for fixing the endoscope.

With this configuration, when the endoscope is inserted into a body cavity, the balloon is prevented from falling out even if the endoscope is moved, so that the endoscope is bent or bent. In addition, the time required for inflating the balloon can be reduced, and the burden on the practitioner and the pain of the subject can be reduced.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 4 are views showing an endoscope apparatus using a medical fixed balloon according to one embodiment of the present invention.

As shown in FIG. 1, the endoscope apparatus 10 has an endoscope main body 12 and a sliding tube 14.

The endoscope body 12 is used, for example, for gastrointestinal endoscopy.

A fixed balloon 18 is attached to the outer periphery of the distal end of the endoscope body 12.

The fixed balloon 18 includes the endoscope main body 1.
2, an air supply tube 20 provided along the endoscope main body 12 from the base end side to the distal end side is connected.

The sliding tube 14 guides the endoscope main body 12 when the endoscope main body 12 is inserted into, for example, a digestive tract, and is slightly larger than the outer diameter of the endoscope main body 12. It has a large inner diameter.

The sliding tube 14
Is flexible like the endoscope body 12.

Further, a fixed balloon 22 is attached to the outer periphery of the leading end of the sliding tube 14.

The fixed balloon 22 is connected to an air supply tube 24 provided from the base end side to the distal end side of the sliding tube 14.

FIGS. 2 and 3 show fixed balloons 18 and 2.
2 is shown in detail.

2 and 3, the fixed balloons 18, 2
2 has substantially the same configuration, only the fixed balloon of the endoscope main body 12 is shown, and the illustration of the fixed balloon 22 of the sliding tube 14 is omitted.

In FIG. 2, when the fixed balloon 18 is inflated and fixed in a body cavity, for example, in a digestive tract, an uneven portion 30 as a fixing auxiliary portion serving as a fixing aid is provided on at least a body cavity, for example, a digestive tract. It is formed in the contact part 32 with a pipe wall.

As described above, by forming the uneven portion 30 on the surface of the fixed balloon 18, the contact area with the digestive tract wall is increased, so that the fixing strength can be secured even if the internal pressure is not so high. Accordingly, the resistance in the pulling-out direction can be increased.

Therefore, the allowable range of the internal pressure of the fixed balloon 18 can be greatly expanded, the treatment time can be shortened, and the burden on the practitioner and the pain of the subject can be reduced.

Further, in FIG.
A plurality of annular protrusions 34 are formed as fixation assisting parts at least on the surface 32 at the contact part 32 with the digestive tract wall.

The protruding portion 34 is formed in a direction crossing the direction of insertion into the digestive tract.

The fixed balloon 1 is formed by the projections 34.
8 can increase the contact area with the digestive tract wall, and can also increase the resistance in the withdrawal direction.

Therefore, in the case of FIG. 3, as in the case of FIG. 2, the allowable range of the internal pressure of the fixed balloon 18 is greatly widened, the operation time is shortened, and the burden on the operator and the pain of the subject are reduced. be able to.

The protruding portions 34 do not necessarily have to be annularly continuous, but may be interrupted on the way.

Next, an operation state of the endoscope apparatus 10 will be described with reference to FIG.

First, as shown in FIG. 1A, the endoscope main body 12 is inserted into the sliding tube 14, and the air in the fixed balloons 18 and 22 is evacuated and deflated. Of the endoscope apparatus 10 is started.

Next, when the distal ends of the endoscope main body 12 and the sliding tube 14 are inserted, for example, to the descending leg of the duodenum, the fixed balloon 22 attached to the distal end of the sliding tube 14 as shown in FIG. Air is supplied to inflate the fixation balloon 22 to fix the sliding tube 14 to the intestinal tract.

In this state, the endoscope main body 12 is operated to remove the excessive bending of the endoscope main body 12, and the endoscope main body 12 is made as straight as possible.

Next, with the endoscope main body 12 being as straight as possible, the sliding tube 14 is held, and only the endoscope main body 12 is inserted deep as shown in FIG.

Next, with the endoscope main body inserted for a predetermined distance, air is supplied into the fixed balloon 18 attached to the distal end of the endoscope main body 12, as shown in FIG. To inflate the intestine.

Next, as shown in FIG. 3C, the air inside the fixed balloon 22 is released, and the fixed balloon 22 is deflated.

Next, the sliding tube 14 is inserted deep into the endoscope main body 12 while taking extra bending, and the distal end of the sliding tube 14 is inserted to near the distal end of the endoscope main body 12.

Next, with the distal end of the sliding tube 14 inserted close to the distal end of the endoscope main body 12, the fixed balloon 22 is inflated to inflate the sliding tube 14.
Is fixed to the intestinal wall, and the fixation balloon 18 is squeezed to bring it into the state shown in FIG. 2 (2).
This operation is repeated to advance deep insertion.

Thus, the two fixed balloons 18, 2
2 when inflating or shrinking and inserting
The uneven portion 30 and the protruding portion 34 shown in FIG.
By forming them at 8, 22, it is not necessary to pay much attention to the internal pressure of the balloon, so that the burden on the practitioner is small and the time is short, so that the test can be performed with less pain for the subject.

The present invention is not limited to the above embodiment, but can be modified in various forms within the scope of the present invention.

For example, in the above-described embodiment, an endoscope apparatus in which an endoscope main body and a sliding tube are combined has been described. However, the present invention is not limited to this example. For example, only an endoscope main body in which the sliding tube is omitted is provided. It can be applied to an endoscope device.

Further, in the above-described embodiment, only the concavo-convex portion and the protruding portion are shown as auxiliary fixing portions. However, it is possible to increase the contact area with the body cavity wall and increase the resistance in the pull-out direction. For example, various shapes can be adopted, for example, the whole is hollowed out in a gourd shape.

Further, the present invention can be applied not only to the endoscope apparatus but also to a catheter having a balloon at the distal end.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an endoscope apparatus according to one embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing details of a fixed balloon.

FIG. 3 is an enlarged perspective view showing details of another fixed balloon.

FIGS. 4 (1) to 3 (3) are diagrams each showing an operation state of the endoscope apparatus of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Endoscope apparatus 12 Endoscope main body 14 Sliding tube 18, 22 Fixed balloon 30 Uneven part 32 Contact part 34 Projection

Claims (4)

[Claims] 1. A medical fixed balloon which is inserted into a body cavity and is capable of being fixed in the body cavity by supplying air to the inside and inflating the same, which assists in fixing when fixed in the body cavity. A medical fixation balloon, wherein the fixation assisting portion is formed at least on the surface in contact with the body cavity wall. 2. The medical fixed balloon according to claim 1, wherein the auxiliary fixing portion is an uneven portion. 3. The medical fixed balloon according to claim 1, wherein the auxiliary fixing portion is a protruding portion formed in a direction intersecting with a direction of insertion into a body cavity. 4. The medical fixed balloon according to claim 1, wherein the balloon is attached to an outer peripheral portion of a distal end of the endoscope and is used for fixing the endoscope.