CN205948167U - Uterine neck expanding balloon catheter - Google Patents

Abstract

The application provides a cervical dilatation balloon catheter, which includes a three-lumen catheter. The middle lumen of the three-lumen catheter accommodates an implantable steel wire, which can support the entire three-lumen catheter, make the three-lumen catheter whole straight, and make the cervical dilation balloon Catheters can be inserted directly into the vagina and cervix. It overcomes the technical defect that the existing cervical dilatation balloon catheter needs to expand the vagina and cervix through the vaginal dilator first, and does not require tools such as vaginal dilators and tweezers, reducing the discomfort of pregnant women and the impact on pregnant women. Maternal body damage, and the operation is simpler, the whole operation is faster and more accurate, not only reduces the work of medical staff, but also further reduces the discomfort of pregnant women.

Description

A kind of cervical dilatation balloon catheter

technical field

This application relates to medical devices, in particular to cervical dilation balloon catheters.

Background technique

Clinically, if the parturient is not in labor due to her own or fetal reasons, or 42 weeks of pregnancy, it is necessary to promote cervical ripening by pharmaceutical or physical methods, and artificially induce labor.

Currently, the most routinely used physical method is to place a balloon at the cervix to promote cervical ripening. This balloon is generally called a cervical dilation balloon catheter. Cervical dilatation balloon catheter relies on the catheter and the pressure generated between the two balloons placed inside and outside the cervix to mechanically stimulate the cervical canal and promote the synthesis and release of local endogenous prostaglandins in the cervix, thereby promoting cervical softening Mature, this method of physical stimulation has no side effects of drug methods, and has become a better and more common choice in clinical practice.

However, the currently used cervical dilatation balloon catheter is placed in a complicated process. Nurses and pregnant women will be more painful when inserting the product. They need to expand the vagina and cervix through the vaginal dilator first, which will make the pregnant woman very uncomfortable. In the process of clamping the product with tweezers, it is easy to puncture the balloon at the front end of the cervical dilatation balloon catheter, resulting in failure to fill the product with normal saline or water leakage after filling the product, affecting the function of the product. In addition, The vaginal dilator is also easy to scratch the vagina or cervix of the pregnant woman when it is placed or taken out. Therefore, the existing cervical dilation balloon catheter has the disadvantages of being inconvenient to use and easily causing damage to the patient during use.

Utility model content

The present application provides a balloon catheter for cervical dilatation, including: a front end balloon, a rear end balloon, and a three-lumen catheter, including: a left cavity, an intermediate cavity and a right cavity. The front-end balloon and the rear-end balloon are respectively arranged on the three-lumen catheter at a predetermined distance apart, and the front-end balloon and the rear-end balloon are both connected to the left cavity and the three-lumen catheter. The right cavity is connected, and the end of the left cavity and the right cavity is an inlet for adding filling liquid; the middle cavity of the three-lumen catheter is used for accommodating an implanted steel wire.

Optionally, the embedded steel wire includes: a steel wire and a steel wire seat, and the steel wire seat is arranged at the bottom of the steel wire.

Optionally, the length of the steel wire is equal to the length of the middle lumen of the three-lumen catheter.

Optionally, the front end of the steel wire is semicircular.

Optionally, ends of the left cavity and the right cavity expand away from the middle cavity to form a Y-shaped connection head.

Optionally, it also includes: a filling check valve; the filling check valve is arranged on the Y-shaped connecting head.

Optionally, the liquid is physiological saline.

Optionally, it also includes: a tip part arranged at the front end of the cervical dilatation balloon catheter, the tip part is connected to the three-cavity body, and the material for developing is coated on the tip part.

Optionally, the three-lumen catheter, the front-end balloon and the rear-end balloon are all made of medical silicone.

Optionally, the tip is made of medical silicone.

The cervical dilatation balloon catheter according to the above embodiment includes a three-lumen catheter, and the middle lumen of the three-lumen catheter is used for accommodating an implantable steel wire. After the steel wire is inserted into the middle cavity, it can support the entire three-lumen catheter, making the three-lumen catheter straight as a whole, so that the cervical dilatation balloon catheter can be directly inserted into the vagina and cervix. However, when the existing cervical dilation balloon catheter is in use, it is necessary to first expand the vagina and cervix through the vaginal dilator, and then pinch the cervical dilation balloon catheter with tweezers and send it into the uterus. A vaginal dilator is needed to dilate the vagina, which can easily damage the vagina and uterus, and bring great discomfort to pregnant women. Since the cervical dilatation balloon catheter of the embodiment of the present application can be directly inserted into the vagina and cervix, tools such as a vaginal dilator and tweezers are not needed, which reduces the discomfort of pregnant women and the damage to the body of pregnant women. It is simpler, and the whole operation is faster and more accurate, which not only reduces the work of medical staff, but also further reduces the discomfort of pregnant women.

Description of drawings

Fig. 1 is a schematic structural view of a cervical dilatation balloon catheter;

Fig. 2 is a schematic diagram of an exploded structure of a cervical dilatation balloon catheter.

detailed description

The present application will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

Embodiment one:

Please refer to Fig. 1, the embodiment of the present application provides a balloon catheter for cervical dilatation, including: a front end balloon 1, a rear end balloon 2, and also includes:

The three-lumen catheter 3 includes three cavities: a left cavity 30, a middle cavity 31 and a right cavity 32. The front end balloon 1 and the rear end balloon 2 are arranged on the three-lumen catheter 3 at a preset distance, respectively. And the front end balloon 1 and the rear end balloon 2 are all in communication with the left cavity 30 and the right cavity 32 of the three-lumen catheter 3, and the ends of the left cavity 30 and the right cavity 32 are filled with liquid. Entrance.

Wherein, the filling liquid is used to place the cervical dilatation balloon catheter into the vagina, and when the front end balloon 1 of the cervical dilation balloon catheter reaches the uterus through the cervix, it is filled into the front end balloon 1, so that the front end balloon 1 expands and is able to rest against the cervix. Filling liquid is also used to fill into the posterior balloon 2, causing the posterior balloon 2 to inflate against the other side of the cervix.

It can be understood that when filling liquid is added, the filling liquid enters the three-lumen catheter from the ends of the left cavity 30 and the right cavity 32, because the front end balloon 1 and the rear end balloon 2 are connected to the left cavity 30 and the right cavity 32 communicate, so the filling liquid can finally reach the front end balloon 1 and the rear end balloon 2. In addition, the filling liquid can firstly fill the front balloon 1 and make it inflated, and when the filling liquid continues to be added, the rear balloon 2 can be filled and inflated. Therefore, when the cervical dilatation balloon catheter is in use, the front end balloon 1 can be filled with filling liquid first, so that the front end balloon 1 can be inflated against the cervix, and then the back end balloon 2 can be filled with filling liquid so that the back end Balloon 2 is inflated and rests against the other side of the cervix.

The middle lumen 31 of the three-lumen catheter 3 is used to accommodate the implantable steel wire 4 . After the steel wire 4 is inserted into the middle lumen 31, it can support the whole three-lumen catheter 3, so that the whole three-lumen catheter 3 becomes straight, so that the cervical dilatation balloon catheter can be directly inserted into the vagina and cervix. However, when the existing cervical dilation balloon catheter is in use, it is necessary to first expand the vagina and cervix through the vaginal dilator, and then pinch the cervical dilation balloon catheter with tweezers and send it into the uterus. A vaginal dilator is needed to dilate the vagina, which can easily damage the vagina and uterus, and bring great discomfort to pregnant women. Since the cervical dilatation balloon catheter of the embodiment of the present application can be directly inserted into the vagina and cervix, tools such as a vaginal dilator and tweezers are not needed, which reduces the discomfort of pregnant women and the damage to the body of pregnant women. It is simpler, and the whole operation is faster and more accurate, which not only reduces the work of medical staff, but also further reduces the discomfort of pregnant women.

Embodiment two:

Figure 2 is an exploded view of a cervical dilatation balloon catheter provided by the embodiment of the present application. As shown in Figure 2, the implantable steel wire 4 of the cervical dilation balloon catheter of the embodiment of the present application includes: a steel wire 40 and a steel wire seat 41 , The steel wire seat 41 is arranged at the bottom of the steel wire 40 .

Preferably, the length of the steel wire 40 is equal to the length of the middle lumen 31 of the three-lumen catheter 3 . The entire middle cavity 31 can be straightened to support the entire three-lumen catheter 3, so that the cervical dilatation balloon catheter can be directly inserted into the vagina and cervix. The steel wire seat 41 is located at the bottom of the steel wire 40, which can effectively prevent the steel wire 40 from being inserted too deeply in the middle cavity 31, and is convenient for grasping when inserting and pulling out the steel wire 40.

Preferably, the front end of the steel wire 40 is semicircular, matching with the shape of the top end of the middle cavity 31 , so as to prevent the thin wall of the top end of the middle cavity 31 from being pierced.

In one embodiment, the ends of the left cavity 30 and the right cavity 32 expand away from the middle cavity 31 to form a Y-shaped connecting head 33 . The cervical dilatation balloon catheter of this embodiment also includes a filling check valve 5 , and the filling check valve 5 is arranged on the Y-shaped connecting head 33 . As shown in FIG. 2 , a filling check valve 5 is provided on both sides of the Y-shaped connector 33 . The same as in Embodiment 1, the filling liquid is added from the ends of the left cavity 30 and the right cavity 32. It can be understood that in this embodiment, the filling liquid is added from the ends of the Y-shaped connector 33. Add filling liquid, that is, carry out the addition of filling liquid from the end on both sides of Y-shaped connector 33, thereby the filling check valve 5 that is respectively arranged on both sides of Y-shaped connector 33 is used for closing the inlet of filling liquid, It can effectively prevent the filling from backflowing to the outside after entering the cervical dilation balloon catheter.

Preferably, the filling liquid is physiological saline. When the cervical dilatation balloon catheter enters the vagina and the uterus, if the filling liquid leaks, since the normal saline is non-toxic, it will not cause physical damage to the pregnant woman, and the child can be lifted. Safety of cervical dilation balloon catheter use.

In a preferred embodiment, the cervical dilation balloon catheter also includes: a tip portion 6 arranged at the front end of the cervical dilation balloon catheter, the tip portion 6 is connected to the three-cavity body 3, and the tip portion 6 is coated with Material.

Since the tip 6 of the cervical dilation balloon catheter contains a developing substance, the insertion position of the cervical dilation balloon catheter can be positioned to prevent the insertion of the cervical dilation balloon catheter from being too deep, reduce the damage to the body of the pregnant woman, and improve the Use security.

The three-lumen catheter 3, the front-end balloon 1, the rear-end balloon 2, and the tip 6 are all made of medical silica gel, which is soft in texture, reduces damage to the skin of the vagina and cervix, and reduces discomfort for pregnant and lying-in women.

The above uses specific examples to illustrate the present application, which is only used to help understand the present application, and is not intended to limit the present application. For those skilled in the technical field to which the present application belongs, some simple deduction, deformation or replacement can also be made based on the idea of the present application.

Claims (10)

1. A balloon catheter for cervical dilatation, comprising: a front end balloon, a rear end balloon, characterized in that, also includes: A three-lumen catheter, including: a left cavity, an intermediate cavity, and a right cavity, and the front end balloon and the rear end balloon are arranged on the three-lumen catheter at intervals of preset distances, and Both the front-end balloon and the rear-end balloon communicate with the left cavity and the right cavity of the three-lumen catheter, and the ends of the left cavity and the right cavity are for additional filling. the inlet of the liquid; The middle lumen of the three-lumen catheter is used for accommodating an implanted steel wire. 2 . The cervical dilation balloon catheter according to claim 1 , wherein the implantable steel wire comprises: a steel wire and a steel wire seat, and the steel wire seat is arranged at the bottom of the steel wire. 3 . 3. The cervical dilatation balloon catheter according to claim 2, wherein the length of the steel wire is equal to the length of the middle lumen of the three-lumen catheter. 4. The cervical dilatation balloon catheter according to claim 2, wherein the front end of the steel wire is semicircular. 5. The cervical dilatation balloon catheter according to any one of claims 1-4, wherein the ends of the left cavity and the right cavity are directed away from the middle cavity Unfold to form a Y-shaped connector. 6. The cervical dilatation balloon catheter according to claim 5, further comprising: a filling check valve; The filling check valve is arranged on the Y-shaped connecting head. 7. The cervical dilatation balloon catheter according to any one of claims 1 to 4, wherein the liquid is physiological saline. 8. The cervical dilatation balloon catheter according to any one of claims 1 to 4, further comprising: a tip portion arranged at the front end of the cervical dilation balloon catheter, said tip portion being in contact with said The three cavities are connected, and the material for developing is coated on the tip. 9. The cervical dilatation balloon catheter according to any one of claims 1 to 4, wherein the three-lumen catheter, the front-end balloon and the rear-end balloon are all made of medical silica gel. 10. The cervical dilatation balloon catheter according to claim 8, wherein the tip is made of medical silicone.