Tubography is to inject contrast agent into uterine cavity and fallopian tube through catheter, and then observe the shape of uterine cavity and understand the patency of fallopian tube according to the development of contrast agent in fallopian tube and pelvic cavity under X-ray and B-ultrasound. The specific operation is that the patient takes the cystolithotomy position, routinely disinfects the vulva and vagina, then exposes the cervix with colposcopy and disinfects the cervix again; Pull the front lip of the cervix outward with cervical forceps, insert a sterilized double-lumen balloon catheter into the external opening of the cervix, and inject air 1-2ml into the balloon with a syringe to check that there is no slippage; Under X-ray or B-ultrasound, the contrast agent prepared by 10ml was injected into the double-lumen tube to observe the patency of uterine cavity and fallopian tube.

1. The fallopian tube is a pair of slender and curved muscle tubes, which are composed of smooth muscle. It is the main place where eggs and sperm combine, and it can also transport fertilized eggs into the uterine cavity. It is the main channel for transporting fertilized eggs. Fallopian tube is one of the important female internal reproductive organs. Fallopian tubes and ovaries are located on both sides of the uterus, and together with ovaries, they are called uterine appendages. The fallopian tube starts from one side of the uterus and can be divided into interstitial part, isthmus, ampulla and umbrella part from the inside out.

Second, the inner side of the interstitial part of the fallopian tube is connected with the uterine horn, and the umbrella-shaped end at the outermost end of the fallopian tube is similar to the ovary. The main function of the umbrella end of fallopian tube is like the hand, which has the function of picking up eggs. The ovum discharged from the ovary is caught by the oviduct's egg picking function and transported to the oviduct cavity through the oviduct, waiting for sperm fertilization. After sperm and eggs form fertilized eggs, they must be transported to the uterine cavity through the peristalsis of fallopian tubes and then implanted into the uterine cavity to conceive a fetus.

Third, fallopian tube is a bridge connecting ovary and uterus. After ovulation, the egg should be obtained through the fallopian tube and transported to the direction of the uterus bit by bit. At this time, if you are in the same room, sperm will come from the direction of the uterus, and sperm and eggs will meet and fertilize in the fallopian tube. It's the only way to get pregnant. So tubal nowhere caused infertility.