Disposable vertebral balloon type cervical dilator

Abstract

The invention provides a disposable vertebral balloon type cervical dilator comprising a deepened and extended main channel pipe, wherein a suction hole is formed in the drainage end of the deepened and extended main channel pipe; the deepened and extended main channel pipe comprises a water and gas injection channel, a local anesthesia drug channel and a straight operating channel; a water and gas injection sealing balloon injection outlet is formed in the top of the water and gas injection channel; the bottom of the water and gas injection channel is communicated with a water and gas injection inlet; a water and gas injection sealing balloon is arranged outside the water and gas injection sealing balloon injection outlet; a front end local anesthesia drug outlet is formed in the top of the local anesthesia drug channel and is located between the suction hole and the top of the water and gas injection sealing balloon; and a local anesthesia drug inlet is formed in the bottom of the local anesthesia drug channel. By using the disposable vertebral balloon type cervical dilator, the dilating process can be finished at one step in the local anesthesia drug administration process, the pain of a patient can be relieved, cervical laceration can be avoided, secretions can be sucked through negative-pressure suction while cervical dilating, and infection is not easily caused.

Description

technical field [0001] The invention relates to the technical field of cervical dilation, in particular to a disposable vertebral capsule cervical dilator. Background technique [0002] Cervical dilators are commonly used instruments in gynecological surgery. Currently, the cervical dilators used clinically are metal dilating rods, which are divided into different sizes to dilate the uterus sequentially. The chance of nosocomial infection will also increase. In particular, hysteroscopic surgery is popular. Before hysteroscopic surgery, it is required to dilate the cervix by about 10-10.5mm. If the dilation of the cervix fails, the hysteroscopic surgery cannot be successfully completed. Therefore, there is an urgent need for a cervical dilator that continuously dilates the cervix once and can relieve the patient's pain. [0003] In the existing clinical technology, Chinese patent CN2012202519743 discloses a balloon cervical dilator, which is mainly composed of an inflatable...

AI Technical Summary

Problems solved by technology

By injecting a certain amount of normal saline into the inflatable tube, the inflatable air bag is slowly stretched, so that the cervix expands. Since the inflatable air bag is double-layered, the thickness of the air bag is reinforced, and it should not be broken by surgical forceps during use. There are the following defects: 1. During the operation, it is necessary to send the dilator inflation balloon to the cervix through hard instruments such as vaginal dilator and surgical forceps, which is very prone to damage to tissues such as the cavity mucosa; 2. Fill the inflation balloon with water to expand Finally, the plug needs to be unscrewed to allow the water in the capsule to drain freely, so that there is residual water in the capsule. When the cervical dilator is pulled out, the residual water in the capsule will continue to wade out, causing inconvenience; especially when it is not used during operation. Be careful not to shrink the inflation balloon to an appropriate expansion capacity by pumping water when the inflation balloon is too large; the third is that there is no reference mark on the inflation tube, which makes it difficult for the doctor to confirm the pressure in the inflation balloon; the fourth is the inflation after expansion The airbag is stretched in a circular shape, and the stretching process aggravates the pain of the patient

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