Vasectomy success rate

Vasectomy is a very advanced surgery that can help patients prevent infertility by anastomosing the vas deferens. It can also avoid the psychological burden of a small number of patients due to the failure of this surgery. The advantage of this surgery is that it recovers quickly and has a high efficiency in conception. At the same time, it requires delicate operations and anastomosis under a microscope, which can reduce surgical complications.

Preoperative preparation

Before surgery, we need to conduct a series of examinations on the patient, such as determining the location, number and length of the blockage by angiography before vasectomy to determine whether surgery can be performed and the method of surgery. If the result of scrotal exploration is a simple blockage of a section of the vas deferens, the blocked section can be removed and the vas deferens end-to-end anastomosis can be performed. If the blockage is near the epididymis or the curly part, it is best to perform a vaso-epididymis anastomosis.

advantage

Vasectomy can achieve a recanalization rate of over 80% and a pregnancy rate of over 60%. The microsurgical precision point positioning fallopian tube anastomosis technology accurately locates the suture position according to the size of the anastomotic tube before the anastomosis. Therefore, during the anastomosis, you don’t need to consider the suture position and concentrate on the anastomotic operation. Therefore, even if the diameter of the tube lumen at both ends of the anastomosis is obviously mismatched, a good anastomosis effect can be obtained. In addition, the full-layer anastomosis suture is used, which is not easy to rupture the vas deferens mucosa, and the knot is not left between the muscle layers of the anastomotic opening. The full-layer suture of 6 stitches has completely matched and healed well. This method shortens the operation time, reduces surgical complications, has a low probability of postoperative stenosis, and has a high recanalization rate.

Anatomy of the vas deferens

The vas deferens is a channel connecting the epididymis and the ejaculatory duct and allowing mature sperm to be discharged. There is one on each side. The total length is about 46 cm, the diameter is 2-3 mm, the wall of the tube is thick, mainly composed of smooth muscle, and it is smooth and slippery to the touch.

The entire vas deferens can be divided into three parts:

Testicular part: It is the starting part of the vas deferens, from the tail of the epididymis to the upper end of the vas deferens. This section is the shortest and enters the spermatic cord at the height of the epididymis caput and transforms into the spermatic cord segment.

Spermatic cord: The section of the vas deferens from the upper end of the testicle to the internal ring of the inguinal canal. The vas deferens here forms the main component of the spermatic cord. It is the most superficial part outside the external ring, located on the inner side of the spermatic cord and easily accessible through the scrotal wall. Vasectomy is performed in this section.

Pelvic region: The section from the internal ring of the inguinal canal to the end of the vas deferens, which is the longest section of the vas deferens.

The wall of the vas deferens is composed of three layers: mucosa, muscularis, and adventitia. The mucosal epithelium is pseudostratified columnar epithelium with cilia on the surface. The muscularis is thicker (1.0-1.5mm) and is composed of three layers of smooth muscle: inner longitudinal, middle circular, and outer longitudinal. The adventitia is a layer of loose connective tissue rich in blood vessels and nerves.

Who needs a vasectomy?

1. Those whose children died due to vas deferens obstruction and who wish to have another child

2. Those who have remarried after their spouse dies or divorces due to vas deferens obstruction

3. Patients with vas deferens obstruction and epididymal depression that cannot be cured by non-surgical treatment

4. Severe sexual dysfunction after vas deferens obstruction, and ineffective treatment

5. Those who have accidentally damaged the vas deferens during trauma or surgery

The above five types of people are all suitable for vasectomy.