JPH11164838A - Parturition promoting balloon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balloon with two functions of expanding a cervix of uterus and promoting parturition which can be used when the cervix of uterus is still immature. SOLUTION: The top of a main water injector tube 10 made of rubber is covered by a main balloon 11, which is a rubber bag, and the opening of the balloon 11 is fixed to the main injector tube 10. A subsidiary injector tube 12 is attached along the main injector tube 10 in the middle to the rear of the main injector tube. A subsidiary balloon 13, which is a rubber bag, is integrally formed extending behind the main balloon 11, and the opening of the subsidiary balloon 13 is fixed to the main injector tube 10 and the subsidiary injector tube 12. A hole 15 is formed at the top of the main injector tube and at the top of the subsidiary injector tube respectively, so that sterilized water sent out of the main injector tube or out of the subsidiary injector tube will flow into each corresponding balloon. And a plug 16 is attached at the rear end of each injector tube so that the water injected into the injector tube will not flow out. The thickness of the rubber of the main balloon 11 is not uniform, and the part around the center 17 is thinner. And as the bottom 18 of the main balloon 11 is thick, the balloon is expanded to be a reverse cone as shown by chain lines.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balloon-shaped device for promoting labor.

[0002]

2. Description of the Related Art Balloons have been widely used when the opening of the cervix is not good during delivery. As shown in FIG. 1, this type of balloon 1 is attached to the tip of a water injection pipe 2, and when water is injected, expands like a chain line. When used, the physician inserts it into the cervix, inflates it by water supply from the irrigation tube, induces labor by mechanical stimulation, and promotes delivery (FIG. 2). This type of balloon may move upward (abdomen) or downward (back) and may not perform well. In addition, this type of balloon can be used only when the cervix is mature to some extent but the opening is not good, and when the cervix is immature,
It cannot be used because the balloon is not well retained in the cervix. Also, it cannot be used when amniotic fluid leaks out.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a balloon which can be used in a state where the cervix is immature and has two functions of dilation of the cervix and promotion of parturition. .

[0004]

[Means for Solving the Problems] The lower third of the uterus is a tube (25-35 mm in length) called the cervix,
During labor, the inner cervix of the cervix (the mouth closer to the uterine body) widens first with labor, the whole cervix softens and expands, and eventually the cervix disappears and the fetus is lost. You will be able to pass. However, even if labor starts and labor occurs, the internal cervix 7 does not open as shown in FIG.
If the cervix is immature, such as when the cervix 6 remains, delivery will not proceed smoothly.

[0005] The delivery-promoting balloon according to the present invention is designed to be used from a state in which the cervix is not matured. A secondary balloon for The secondary balloon follows the primary balloon and a primary irrigation tube communicating with the primary balloon extends through the interior of the secondary balloon. The sub water injection pipe communicating with the sub balloon is attached to the main water injection pipe.

In use, the main irrigation tube is inserted into the uterus and injected into the main balloon to inflate it. The secondary balloon is then inflated inside the cervix with water from the secondary irrigation tube. By inflating the main and sub-balloons in this way, the lower surface of the uterine body and the inner cervix can be pressed by the main balloon, and the inner cervix can be expanded and expanded. On the other hand,
Inflation of the accessory balloon in the cervix promotes cervical dilatation and maturation. Since the main and sub-balloons are connected to each other and inflated in the uterus and cervix, respectively, each balloon does not move from a predetermined position. Thus, the interaction between the two balloons promotes dilation and maturation of the cervix, occurrence of labor, and promotion of labor. Therefore, this balloon can be widely used for cervical toughness at labor, weak labor, pelvic position labor, premature rupture, premature rupture, midterm pregnancy abortion, and death of a fetus during pregnancy.

It is preferable that the top of the main balloon is flattened by thinning the film around the central portion as compared with the others. By doing so, the fetus is less likely to be pushed up, the space formed between the advanced part of the fetus and the lower surface of the uterine body can be made smaller, and the umbilical cord is less likely to sag. Further, it is preferable that the lower portion of the main balloon is formed so as to expand in an inverted conical shape. In this way, it interacts with the accessory balloon and adheres to the lower uterus and the inner uterine ostium, and the compression and stimulation promotes dilatation and maturation of the cervix, causing labor, promoting labor, and leaking amniotic fluid. Prevention becomes possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4, a rubber main bag 11, which is a rubber bag, is put on the tip of a rubber main injection tube 10 and its mouth is fixed to the main injection tube 10. A sub water injection pipe 12 is provided from the middle of the main water injection pipe 10 to the rear. Main balloon 1
After 1, a sub-balloon 13, which is also a rubber bag, is integrally extended, and the mouth of the sub-balloon 13 is fixed to the main and sub-water injection pipes. Holes 15 are drilled at the ends of the main and auxiliary water injection pipes 10 and 12 so that the sterilized water sent from each water injection pipe flows into the corresponding balloon. At the rear end of each injection pipe, a stopper 16 is provided so that the press-fitted water does not escape.

The main balloon 11 is not uniform in the thickness of the rubber film, but is made thin around the central portion (indicated by reference numeral 17 in FIG. 4). By doing so, when water is injected and inflated, the shape becomes not a true sphere but a vertically crushed shape as shown by a chain line in FIG. The lower portion 18 of the main balloon is made to have an inverted conical shape as shown by a chain line when inflated by thickening the membrane or the like. The secondary balloon is formed of a relatively thick rubber film, and expands in a cylindrical shape. The upper part of the sub-balloon is folded inside and adhered along the main balloon from the point a to the point b so as to have a strong integrity with the main balloon.

In use, as shown in FIG. 5, the tip of the main irrigation tube 10 is inserted into the uterine body, and sterile water is sent out from a syringe (not shown) connected to the rear end of the main irrigation tube. Inflate the main balloon 11 in the uterus. Next, sub-injection pipe 1
Sterile water is sent from 2 and the secondary balloon 13 is inflated. The main balloon inflated in the uterus presses the lower surface of the uterine body and the inner cervix 7, and promotes dilation and enlargement of the inner cervix. Since the main balloon 11 has a thinner film thickness around the center than the others, the main balloon 11 swells flatly and is not unevenly distributed.
The contact area between the main balloon and the advanced part of the fetus is large, and the pressure of the fetus is concentrated on the main balloon. In addition, space 1 in the uterus
Since 9 is kept small, the umbilical cord is less likely to sag. on the other hand,
The secondary balloon 13 connected after the main balloon has a cervical canal 6.
It bulges in a cylindrical shape, pushes the cervix from inside and promotes cervical dilation.

[0011]

The delivery promotion balloon according to claim 1 has a main balloon for inflating in the uterus deeper than the cervix and a sub-balloon for expanding in the cervix, and the sub-balloon is connected after the main balloon. The main irrigation pipe communicating with the main balloon extends through the inside of the sub-balloon, and the sub-irrigation pipe communicating with the sub-balloon is attached to the main irrigation pipe. To keep the secondary balloon from falling off the cervix. On the other hand, the secondary balloon dilates the cervix and matures the immature cervix, and the primary and secondary balloons have the effect of promoting labor. In addition, since the main and sub-balloons have their own water injection pipes, each balloon can be inflated to a desired size by adjusting the water injection amount.

According to a second aspect of the present invention, the thickness of the main balloon is made thinner around the central portion than the other portions so that the main balloon expands flatly.
The umbilical cord can be prevented from falling out of the uterus.

According to a third aspect of the present invention, the lower portion of the main balloon is formed so as to expand in an inverted conical shape.
By interacting with the accessory balloon, it adheres to the lower uterus and inner uterine ostium, and its compression and stimulation promotes cervical dilatation and maturation, which can cause labor, promote delivery, and prevent amniotic fluid leakage .

[Brief description of the drawings]

FIG. 1 is an elevational view of a conventional delivery promotion balloon.

FIG. 2 is an explanatory view of a use state of a conventional delivery promotion balloon.

FIG. 3 is a sectional view of an immature uterus.

FIG. 4 is a cross-sectional view of the delivery promotion balloon of the present invention.

FIG. 5 is an explanatory view of a use state of the delivery promotion balloon of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main injection pipe 11 Main balloon 12 Secondary injection pipe 13 Secondary balloon

Claims (3)

[Claims] 1. A main balloon for inflating the uterus in the back of the uterine ostium and a secondary balloon for inflating the cervix, wherein the secondary balloon is connected after the main balloon and communicates with the main balloon. The water pipe extends rearward through the inside of the sub-balloon, and the sub-irrigation pipe communicating with the sub-balloon is a delivery promotion balloon attached to the main irrigation pipe. 2. The main balloon according to claim 1, wherein the thickness of the main balloon is formed to be thinner than the other portions only around the central portion so that the main balloon expands flatly.
Delivery balloon according to claim 1. 3. The delivery-promoting balloon according to claim 1, wherein the main balloon is formed so that a lower portion of the main balloon expands substantially in an inverted conical shape.