JP3049525U - Delivery balloon - Google Patents

Abstract

(57) [Summary] (Modifications) [PROBLEMS] 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 delivery. SOLUTION: A main balloon 11 which is a rubber bag is put on a tip of a rubber main injection pipe 10, and a mouth thereof is fixed to the main injection pipe. A sub water injection pipe 12 is attached from the middle of the main water pipe to the rear. After the main balloon, a sub-balloon 13, also made of a rubber bag, is integrally extended, and the mouth of the sub-balloon is fixed to the main and sub water injection pipes. Holes 15 are drilled at the ends of the main and sub irrigation pipes so that the sterilized water sent from each irrigation 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.
In the main balloon, the thickness of the rubber film is not uniform, the portion around the center portion is thin, and when inflated by pouring water, it has a shape that is not a true sphere but crushed up and down. In addition, lower part 1 of main balloon
8 thickens the membrane so that when inflated, it forms an inverted cone as shown by the dashed line.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a balloon-like device for promoting labor.

[0002]

[Prior art]

 At delivery, if the cervix does not open well, balloons have been widely used. As shown in FIG. 1, this type of balloon 1 is attached to the end of a water injection pipe 2, and when water is injected, expands like a chain line. When used, a physician inserts it into the cervix, inflates it by feeding water from the irrigation tube, induces labor by mechanical stimulation, and promotes delivery (Fig. 2). This type of balloon may move up (abdomen) or down (back) and may not perform well. In addition, this type of balloon can be used only when the cervix has matured to some extent but the opening is not good, and when the cervix is immature, the balloon is not well retained in the cervix. Can not. Also, it cannot be used when amniotic fluid leaks out.

[0003]

[Problems to be solved by the invention]

 It is an object of the present invention to provide a balloon which can be used in a state where the cervix is immature, and has two functions of cervical dilatation and delivery.

[0004]

[Means for Solving the Problems]

 The lower third of the uterus is a tube called the cervix (length: 25 to 35 mm). During labor, the inner cervix of the cervix (the mouth closer to the uterine body) is first delivered with labor. The cervix expands and the entire cervix softens and stretches, eventually causing the cervix to disappear and allow the fetus to pass. However, even if labor starts and labor occurs, as shown in Fig. 3, if the cervix is immature, such as the internal cervix 7 does not open and the cervix 6 remains, delivery will be smooth. Does not progress.

[0005] The delivery balloon of the present invention is designed to be used from a state in which such a cervix is not matured. It has a secondary balloon for inflating. The secondary balloon extends after the main balloon, and the main irrigation pipe communicating with the primary balloon extends through the interior of the secondary balloon. The secondary water pipe communicating with the secondary balloon is attached to the main water pipe.

[0006] In use, the main irrigation tube is inserted into the uterus and infused 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 compressed by the main balloon, and the inner cervix can be expanded and expanded. On the other hand, expansion of the accessory balloon in the cervix promotes cervical dilatation and maturation. The primary and secondary balloons are connected to each other and inflated in the uterus and cervix, respectively, so that each balloon does not move from a predetermined position. Thus, the interaction of the two balloons promotes dilatation and maturation of the cervix, the onset of labor, and accelerates delivery. Therefore, this balloon can be widely used for cervical toughness at labor, weak labor, pelvic delivery, premature rupture, premature rupture, midterm pregnancy abortion, and fetal death during pregnancy.

[0007] The main balloon is preferably designed so that its top is flattened by thinning the film around the central part 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 reduced, 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. By doing so, it interacts with the accessory balloon and adheres to the lower uterus and inner uterine ostium, and its compression and stimulation promotes cervical dilatation and maturation, leading to labor, promotion of labor, and amniotic fluid. Can be prevented from leaking.

[0008]

[Embodiment of the invention]

 As shown in FIG. 4, the main balloon 11, which is a rubber bag, is put on the tip of the main water injection pipe 10 made of rubber, and its mouth is fixed to the main water injection pipe 10. A sub-water injection pipe 12 is attached from the middle of the main water injection pipe 10 to the rear. After the main balloon 11, a sub-balloon 13, also made of a rubber bag, is integrally extended, and the mouth of the sub-balloon 13 is fixed to the main and sub-irrigation pipes. Holes 15 are drilled at the ends of each of the main and sub irrigation pipes 10 and 12 so that the sterilized water sent from each irrigation pipe flows into the corresponding balloon. A plug 16 is provided at the rear end of each water pipe so that the press-fitted water does not come off.

The main balloon 11 is not uniform in thickness of a rubber film, and is made thin around a central portion (indicated by reference numeral 17 in FIG. 4). By doing so, when water is injected and inflated, as shown by a chain line in FIG. Further, 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. In addition, the upper part of the sub-balloon is folded inward and adhered along the main balloon from point a to point b so as to have strong integration 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 womb. Next, the sterile water is also sent from the secondary injection pipe 12 to expand the secondary balloon 13. The main balloon inflated in the uterus presses the lower surface of the uterine body and the inner uterine tract 7 to promote dilation and expansion of the inner uterine ostium. The thickness of the main balloon 11 around the central portion is made thinner than the others, so that the main balloon 11 swells flatly and is not unevenly distributed, so that the contact area between the main balloon and the advanced part of the fetus is large, and the pressure of the fetus is large. Concentrate on the main balloon. Also, since the space 19 in the uterus is kept small, the umbilical cord is difficult to droop. On the other hand, the sub-balloon 13 that follows the main balloon inflates in the cervix 6 in a tubular shape, pushes the cervix from the inside, and promotes the expansion of the cervix.

[0011]

[Effect of the invention]

 The delivery-promoting balloon according to claim 1 has a main balloon for inflating in the uterus deeper than the cervix and a sub-balloon for inflating in the cervix, and the sub-balloon is connected after the main balloon and is connected to the main balloon. The main irrigation pipe, which communicates, extends through the interior of the sub-balloon and extends rearward.The sub-irrigation pipe, which communicates with the sub-balloon, is attached to the main irrigation pipe. At the same time, hold the secondary balloon so that it does not fall out of the cervix. On the other hand, the secondary balloon dilates the cervix and matures the immature cervix, and the primary and secondary balloons work together to promote delivery. Also, since the main and sub-balloons have their own water injection pipes, each balloon can be expanded to a desired size by adjusting the water injection amount.

[0012] The second aspect of the present invention is that the thickness of the main balloon is made thinner in the periphery of the central part than in the other parts so that the main balloon expands flatly. Can be prevented from falling outside.

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. With this configuration, the lower portion of the main balloon and the inner uterine ostium are brought into close contact with each other by the interaction with the auxiliary balloon. It stimulates cervical dilatation and maturation, which can lead to labor, accelerated labor, and prevent leakage of amniotic fluid.

[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 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)

[Utility model registration 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.