TECHNICAL FIELD

The present invention relates to the technical field of medical instruments, and more particularly relates to an auxiliary shaping device for a cervical vaginal penetration plasty and a use method thereof.

BACKGROUND

Congenital no-vaginal cervical atresia (commonly known as: a woman with a hypoplastic vagina) is a disease of abnormal development of adolescent female reproductive tract, which not only makes it impossible to have normal sex life, but also seriously affects physical and mental health because menstrual blood cannot be discharged, causing obstruction and diseases of infection and endometriosis. At present, a cervical vaginal penetration plasty for preserving the fertility is a main treatment method, and the surgical technology is increasingly mature. However, obstruction caused by postoperative cervical adhesion is the most common clinical thorny complication, and most patients are forced to undergo hysterectomy. An auxiliary shaping device is a main measure for preventing such complication. The device can be fixed on the abdomen with a special fixing belt during use to prevent slippage. The inert and non-deformable material is used to meet the requirements of long-term placement after clinical operation.

At present, such device does not exist clinically and is often replaced by a drainage tube made of rubber material and an intrauterine device of metal material, which are easy to drop and infect after repeated placement. Aging of the rubber material causes middle cavity occlusion and obstruction. The placement of metal foreign objects causes it impossible for sex life and uncomfortable feeling.

Therefore, how to design an auxiliary shaping device capable of avoiding cervical adhesion after a cervical vaginal penetration plasty, reducing the use discomfort of patients and reserving the fertility function of adolescent girls, and a use method thereof is an important problem to be urgently solved in the field.

SUMMARY

In view of this, the present invention provides an auxiliary shaping device for a cervical vaginal penetration plasty capable of avoiding cervical adhesion after a cervical vaginal penetration plasty, reducing the use discomfort of patients, reserving the fertility function of adolescent girls and facilitating insertion and removal, and a use method thereof.

To achieve the above purpose, the present invention adopts the following technical solution:

An auxiliary shaping device for a cervical vaginal penetration plasty comprises a uterine cavity support, a cervical canal support and a vaginal support which are made of elastic material.

The uterine cavity support is a hollow bowl-shaped structure, the uterine cavity support includes a first end and a second end; and the first end has a larger diameter than the second end; the first end includes a plurality of valve bodies evenly distributed in circumferential direction; a concave part is arranged between two adjacent valve bodies, and the concave part has an opening shape; uterine cavity secretions enter the interior of the uterine cavity support through the concave part.

One end of the cervical canal support is connected with the second end, and the other end of the cervical canal support is connected with the vaginal support.

A passage is arranged in the uterine cavity support, the cervical canal support and the vaginal support. The passage communicates inner cavities of the uterine cavity support, the cervical canal support and the vaginal support, and the uterine cavity secretions are discharged along the passage.

By adopting the above technical solution, the present invention has the following beneficial effects: the uterine cavity support, the cervical canal support and the vaginal support have elasticity in the present invention, and can produce large deformation under the action of an external force, which facilitates the insertion and removal of the auxiliary shaping device, Meanwhile, the structure of the uterine cavity support has good spreading force and strength, which ensures that the uterine cavity support does not come out from a cervix, without fixation with a fixing belt, thereby reducing patient discomfort. Liquid discharged from a uterus can be discharged through the internal spaces of the uterine cavity support, the cervical canal support and the vaginal support to avoid obstruction and infection.

Preferably, an ejector rod is put into the passage; the center of an inner wall of the first end has a pushing part protruding outward; the ejector rod is abutted against the inner side of the pushing part; and the ejector rod supports the pushing part to insert the auxiliary shaping device smoothly.

Preferably, the inner wall of the pushing part is provided with a groove for placing the ejector rod; and the arrangement of the groove prevents the ejector rod from deviating from the pushing part, making the process of inserting the auxiliary shaping device smoother.

Preferably, the cervical canal support and the vaginal support are cylindrical, and the diameter of the vaginal support is larger than the diameter of the cervical canal support.

Preferably, a connection part between the cervical canal support and the vaginal support has a trapezoidal connecting part; and one end of the connecting part with a small caliber is connected with the cervical canal support, and one end with a large caliber is connected with the vaginal support. The cervical canal support and the vaginal support are in transitional variable-diameter connection through the connecting part; which can ensure that the cervical canal support is stuck in the cervix and may not slip into the uterus to ensure the successful shaping of the cervix.

Preferably, the uterine cavity support, the cervical canal support and the vaginal support are made of any one of silicone rubber, rubber, PVC and polyurethane. The above materials have high elastic modulus and good supporting force, and also have good biological compatibility.

A use method of an auxiliary shaping device for a cervical vaginal penetration plasty specifically comprises the following steps:

1) selecting an ejector rod: placing the ejector rod into the cervical canal support and the uterine cavity support in sequence along the passage of the vaginal support; and placing the end part of the ejector rod in the groove of the pushing part;

2) after connecting the ejector rod with the auxiliary shaping device, inserting the auxiliary shaping device under the driving of the ejector rod, wherein the uterine cavity support is placed in the uterus; the cervical canal support is placed in the cervix; the vaginal support is placed in the vagina; and then the ejector rod is pulled out to complete the insertion of the auxiliary shaping device;

3) when the auxiliary shaping device needs to be taken out, directly pulling the vaginal support at the vagina to take out the auxiliary shaping device.

Preferably, the ejector rod comprises: a pulling part and a supporting part; the supporting part is placed in the passage in a cylindrical shape; and the pulling part is placed outside the passage for inserting or withdrawing the ejector rod.

It can be known form the above technical solution that compared with the prior art, the present invention provides an auxiliary shaping device for a cervical vaginal penetration plasty and a use method thereof; and has the following beneficial effects:

(1) The uterine cavity support, the cervical canal support and the vaginal support in the present invention have elasticity, and can produce large deformation under the action a the external force, which facilitates the insertion and removal of the auxiliary shaping device.

(2) The structure of the uterine cavity support has good spreading force and strength, which ensures that the uterine cavity support does not come out from a cervix, without fixation with a fixing belt, thereby reducing patient discomfort.

(3) The cervical canal support is arranged behind the uterine cavity support, which can open the shaped cervix to ensure that the shaped cervix is not adhered and closed, thereby achieving the purpose of cervix shaping.

(4) The cervical canal support and the vaginal support are in transitional variable-diameter connection, which can ensure that the cervical canal support is stuck in the cervix and may not slip into the uterus to ensure the successful shaping of the cervix.

