Cervical dilator

Abstract

The cervical dilator comprises a limiting balloon, an expansion balloon, a double-end balloon, a water injection sealing device and a supporting rod, the limiting balloon, the expansion balloon and the double-end balloon are sequentially arranged on the cervical dilator from bottom to top in an integrated mode, the water injection sealing device is arranged at the bottom of the limiting balloon, and the water injection sealing device is arranged at the bottom of the double-end balloon. The supporting rod is arranged in the cervical dilator, the upper end of the supporting rod is fixedly connected with the double-end balloon, and the lower end of the supporting rod is fixedly connected with the water injection sealing device. According to the cervical dilator, the design of multiple balloons is adopted, each balloon has a unique function, the limiting and dilating functions of different positions of the cervix are achieved through the elastic property of the balloons, dilation is achieved at a time, and the balloons can be adjusted in a two-way mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical supplies, and particularly relates to a cervical dilator. Background Art

[0002] When treating cervical diseases, the cervix needs to be dilated. When dilating the cervix, a cervical dilator is used. Currently, when dilating the cervix, a dilator rod or a dilator balloon is used. The dilator rods are of different sizes. When in use, the dilator rods are inserted into the cervix in sequence from small to large to dilate it. Multiple insertions are required during dilation. The dilation process is cumbersome and increases the pain of the patient. The disadvantage of the dilator balloon is that the dilation effect on the cervix is ​​not obvious, and the one-way air inlet valve can only expand the balloon in one direction. The adjustment degree is not ideal, and the balloon positioning is inaccurate, which can easily cause damage. Utility Model Content

[0003] The utility model aims at solving the above-mentioned deficiencies in the prior art and invents a cervical dilator.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A cervical dilator includes a limiting balloon, an expansion balloon, a double-headed balloon, a water injection sealing device and a support rod. The cervical dilator is integrally formed from bottom to top and is provided with a limiting balloon, an expansion balloon and a double-headed balloon in sequence. The bottom of the limiting balloon is provided with a water injection sealing device. The support rod is arranged in the cervical dilator, the upper end of the support rod is fixedly connected to the double-headed balloon, and the lower end of the support rod is fixedly connected to the water injection sealing device.

[0006] The cervical dilator of the present invention adopts a multi-balloon design, each balloon has its own unique function, and realizes the limiting and dilation functions of different positions of the cervix through the elastic properties of the balloon itself. It can expand to the point in one go and can also perform "bidirectional" adjustment on the balloon.

[0007] Furthermore, the water injection sealing device includes a base, a threaded connection port, a water inlet, a sealing gasket, a sealing cover, a connecting column, a limiting clamp and a spring; the base is fixedly connected to the outer side surface of the bottom of the limiting balloon; the bottom of the base is provided with a threaded connection port, and two water inlets are provided on the base; a sealing gasket is provided on the upper part of the water inlet, and a limiting clamp is fixedly provided in the water inlet; the connecting column passes through the limiting clamp, and a sealing cover is fixedly provided on the top of the connecting column; the sealing cover is fitted with the sealing gasket; the upper end of the spring is fixedly connected to the sealing cover, and the lower end of the spring is fixedly connected to the limiting clamp; the water injection sealing device adopts an automatic sealing design, and the sealing cover will be pushed open when the water pressure or air pressure is large enough. After the water injection or air injection is stopped, the sealing cover is pressed downward under the action of the internal pressure and the spring to fit and contact the sealing gasket to achieve a sealing effect.

[0008] Furthermore, the spring is a tension spring, and the type of spring can be selected according to the structural design of the sealing cover, the connecting column and the limiting clamping ring. Both a tension spring and a compression spring can be used.

[0009] Furthermore, the thickness of the base is 1.0 cm to 2.0 cm, and the base is thick enough to install the limiting clamp and the spring.

[0010] Furthermore, the limiting balloon and the double-headed balloon are non-elastic balloons, the limiting balloon is used to prevent the expansion plug from moving upward, and the double-headed balloon is used to prevent the expander from moving downward; the expansion balloon is an elastic balloon, which is used to expand the cervix.

[0011] The advantages of the present invention are as follows: the dilator of the present invention adopts a multi-balloon design, and the function of each balloon is clearly divided, ensuring that the cervix will not fall off or move upward while dilating, and the dilator is expanded in place at one time, alleviating the patient's pain; a support rod is designed in the dilator, and the support rod can conveniently insert the dilator into the appropriate position of the cervix for easy insertion; the dilator is also designed with a water injection sealing device to achieve automatic sealing of the dilator after water injection, realize "two-way" adjustment, good sealing, and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of a cervical dilator of the utility model;

[0013] Figure 2 This is a front view of a cervical dilator of the utility model;

[0014] Figure 3 This is a three-dimensional diagram of a water injection sealing device in a cervical dilator of the present utility model;

[0015] Figure 4 This is a top view of a water injection sealing device in a cervical dilator of the present invention;

[0016] Figure 5 yes Figure 4 Cross-sectional view of AA. DETAILED DESCRIPTION

[0017] The following is a detailed description of the present invention with reference to the accompanying drawings:

[0018] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “upper”, “lower”, “top”, “bottom”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as a limitation on the present invention.

[0019] like Figure 1-2 As shown, a cervical dilator includes a limiting balloon 1, an expansion balloon 2, a double-headed balloon 3, a water injection sealing device 4 and a support rod 5. The cervical dilator is integrally formed from bottom to top and is provided with the limiting balloon 1, the expansion balloon 2 and the double-headed balloon 3 in sequence. The limiting balloon 1 and the double-headed balloon 3 are non-elastic balloons with a fixed size. They will not expand after water or air injection. The limiting balloon 1 adopts a disc structure and is mainly used to block the vaginal opening to prevent the dilator from moving upward. The double-headed balloon 3 adopts a double-headed structure design and can be sealed at the fallopian tube opening after water injection, playing a blocking and limiting role (not moving downward). The expansion balloon 2 is a cylindrical elastic balloon that can expand and dilate the cervix after water or air injection. A water injection sealing device 4 is provided at the bottom of the limiting balloon 1. The water injection sealing device 4 can automatically seal after water or air injection, and can also realize two-way adjustment of the balloon size (water injection or water release). The support rod 5 is arranged in the cervical dilator, the upper end of the support rod 5 is fixedly connected to the double-headed balloon 3, and the lower end of the support rod 5 is fixedly connected to the water injection sealing device 4. The connection position is the center point of the water injection sealing device 4. The function of the support rod 5 is to facilitate the insertion of the cervical dilator into the uterus.

[0020] like Figure 3-5As shown, the water injection sealing device 4 includes a base 41, a threaded connection port 42, a water inlet 43, a sealing gasket 44, a sealing cover 45, a connecting column 46, a limiting clamp 47 and a spring 48; the base 41 is fixedly connected to the outer side of the bottom of the limiting balloon 1; the base 41 is circular, with a thickness of 1.0 cm to 2.0 cm, and the optimal thickness is 1.5 cm. A threaded connection port 42 is provided at the bottom of the base 41, and the threaded connection port 42 is mainly used to connect to an external pipe to facilitate water or air injection; in addition to using a threaded connection port, a bayonet connection can also be used for the connection port, which can be used mainly to meet the requirements of fast connection, good sealing, and easy disassembly and assembly. Two water inlets 43 are provided on the base 41, and the water inlets 43 are arranged side by side. A sealing gasket 44 is provided on the upper part of the water inlet 43. The sealing gasket 44 is annular and is arranged around the water inlet 43. A limit snap ring 47 is fixedly provided in the water inlet 43. The limit snap ring 47 consists of a circular ring and a connecting block. The circular ring is fixedly connected to the wall of the water inlet 43 via four connecting blocks, and there is a gap between the connecting blocks. The connecting column 46 passes through the limit snap ring 47. A limit cone is provided at the bottom of the connecting column 46. The function of the limit cone is to prevent the connecting column 46 from detaching from the limit snap ring 47, and it can also reduce the resistance during water or gas injection. A sealing cover 45 is fixedly provided on the top of the connecting column 46. The sealing cover 45 fits with the sealing gasket 44, and the two squeeze each other to achieve sealing of the balloon. The upper end of the spring 48 is fixedly connected to the sealing cover 45, and the lower end of the spring 48 is fixedly connected to the limit snap ring 47; the spring 48 is a tension spring. Under normal circumstances, the sealing cover 45 and the sealing gasket 44 play a sealing role under the action of the spring 48. When the threaded connection port 42 is connected to an external pipeline to inject water or air, the sealing cover 45 is pushed up due to the high external pressure, and water or air can enter the balloon. When the balloon is large enough and the water or air injection is stopped, the external pressure will decrease, and the sealing cover 45 will fit and seal with the sealing gasket 44 under the action of the spring 48 and the internal pressure of the balloon. When the balloon needs to be drained or exhausted, it is only necessary to support the bottom of the connecting column 46 to push up the sealing cover 45, realizing "two-way" adjustment.

[0021] Although the above describes and illustrates the specific embodiments of the present invention in detail, it should be noted that various changes and modifications can be made to the above embodiments without departing from the spirit of the present invention and the scope of the appended claims.

Claims

1. A cervical dilator, characterized in that: The invention comprises a limiting balloon (1), an expansion balloon (2), a double-headed balloon (3), a water injection sealing device (4) and a support rod (5); the cervical dilator is integrally formed from bottom to top, and the limiting balloon (1), the expansion balloon (2) and the double-headed balloon (3) are sequentially provided; the bottom of the limiting balloon (1) is provided with a water injection sealing device (4); the support rod (5) is provided in the cervical dilator; the upper end of the support rod (5) is fixedly connected to the double-headed balloon (3), and the lower end of the support rod (5) is fixedly connected to the water injection sealing device (4).

2. A cervical dilator according to claim 1, characterized in that: The water injection sealing device (4) comprises a base (41), a threaded connection port (42), a water inlet (43), a sealing gasket (44), a sealing cover (45), a connecting column (46), a limiting clamp (47) and a spring (48); the base (41) is fixedly connected to the outer side surface of the bottom of the limiting balloon (1); the bottom of the base (41) is provided with a threaded connection port (42), and the base (41) is provided with two water inlets (43); the inlet A sealing gasket (44) is provided on the upper part of the water inlet (43), and a limiting snap ring (47) is fixedly provided in the water inlet (43); the connecting column (46) passes through the limiting snap ring (47), and a sealing cover (45) is fixedly provided on the top of the connecting column (46); the sealing cover (45) is fitted with the sealing gasket (44); the upper end of the spring (48) is fixedly connected to the sealing cover (45), and the lower end of the spring (48) is fixedly connected to the limiting snap ring (47).

3. A cervical dilator according to claim 2, characterized in that: The spring (48) is a tension spring.

4. A cervical dilator according to claim 3, characterized in that: The thickness of the base (41) is 1.0 cm to 2.0 cm.

5. The cervical dilator according to claim 4, characterized in that: The limiting balloon (1) and the double-headed balloon (3) are non-elastic balloons; the expansion balloon (2) is an elastic balloon.

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