Spirally-expanding cervix uteri dilating instrument with cervical forceps

Abstract

The invention relates to a surgical instrument for dilating the cervix uteri in a gynecological operation, in particular to a cervix uteri dilating instrument capable of dilating the cervix uteri and clamping the cervix uteri at the same time. The cervix uteri dilating instrument is composed of a cervix uteri dilating rod capable of realizing spiral expansion and a cervix holding forceps body, wherein the cervix uteri dilating rod is composed of a shell and a rod core; the cervix uteri dilating rod is inserted into the inner opening of the cervix uteri, and the forceps body is closed to clamp the cervix; the rod core is inserted into the shell of the cervix uteri dilating rod, the rod core gradually enters the threaded part of the shell by rotating a rod core handle clockwise, and when the rod core goes deep into the conical part of the shell, the top end of the shell of the cervix uteri dilating rod gradually expands outwards, so the inner opening of the cervix is slowly expanded; the dilation degree of the shell of the cervix uteri dilating rod is controlled along with the insertion depth of the rod core; and the rod core handle is rotated anticlockwise, the shell is gradually folded, the forceps body is opened, and the cervix uteri dilating rod is taken out by retreating. The instrument can dilate the cervix uteri in a controllable and closed mode, so local stimulation is small; the cervix uteri dilating rod does not need to be replaced in a dilating process or to be inserted into the uterine cavity repeatedly, so influence on the form in the uterine cavity is small, and infection risks are few; and fracture is avoided when the instrument is taken out, cervix uteri traction force is small, and cervix uteri damage is small.

Description

technical field [0001] The patent of the present invention relates to medical and surgical instruments that need to dilate the cervix in gynecological operations, specifically a spiral expandable dilator with cervical forceps. Background technique [0002] At present, the cervical dilating device and the cervical clamping device disclosed in the Chinese patent CN are both independent devices. The cervical dilating device is mainly divided into two types, including a hydrophilic cervical dilating rod and a traditional mechanical cervical dilating device. The hydrophilic cervical dilator is a disposable product, which can dilate the cervix continuously, with little local stimulation, closed dilation of the cervix, no need to replace instruments, and easy to use. However, the expansion of the hydrophilic cervical dilation rod is slow, takes a long time, and the texture becomes soft after being left for too long. When it is taken out, the end breaks into the uterine cavity. The ...

AI Technical Summary

Problems solved by technology

However, the expansion of the hydrophilic cervical dilation rod is slow, takes a long time, and the texture becomes soft after being left for too long. When it is taken out, the end breaks into the uterine cavity. The dilation effect varies from person to person. Some patients cannot meet expectations and still cannot meet the surgical needs.

The traditional mechanical cervical dilation device has disposable instruments and reusable instruments. It consists of multiple dilating sticks of the same style and different specifications. When entering the uterine cavity, the dilating rod can be used to dilate the cervix according to the specifications of the dilating rod. However, when the condition of the cervix is ​​poor for some patients, it is difficult for the dilating rod to enter the uterine cavity, and surgery is not required.

In addition, the cervical forceps will increase the outward pulling force correspondingly, the cervical forceps will slip off, and the cervix will be repeatedly clamped and pulled, which will damage the cervix.

The dilating rod enters the uterine cavity sequentially, dilating the cervix in a non-closed manner, increasing the chance of infection, and the dilating rod entering the uterine cavity multiple times can damage the normal shape of the uterine cavity and affect the surgical judgment

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