When can I use sperm supply?
(1) Irreversible azoospermia
(2) Severe oligospermia, amblyspermia and malspermia
(3) Vasectomy reversal failed
(4) Ejaculation disorder
(5) The man and/or family have serious genetic diseases that are not suitable for procreation
(6) Maternal and infant blood group incompatibility can not get a surviving newborn

It should be noted that with the development of reproductive medicine, some of the above conditions that meet the indications for sperm supply can still be treated and used to obtain healthy offspring for both couples. In summary, pregnancy preparation is a process that requires both husband and wife to prepare together, so the man's semen examination is very necessary, do not take it for granted that pregnancy is a woman's business. In addition, the man consults a professional reproductive doctor after getting the result, and the doctor will give a suitable treatment plan according to the results.
Related reading: Classification of azoospermia
(1) Obstructive azoospermia (OA): refers to azoospermia caused by obstruction of sperm transportation due to obstruction of the vas deferens. Clinical manifestations are basically normal testicular volume and serum FSH levels. The causes are congenital and acquired. Ultrasonography can find signs of obstruction, and the obstruction sites obtained according to ultrasonography can be subdivided into intratestal obstruction, epididymal obstruction, vas deferens obstruction, ejaculatory orifice obstruction, and so on. ICSI can be treated with a testicular puncture or epididymis.
(2) Non-obstructive azoospermia (NOA): refers to the inability of the testicles to produce sperm. These include changes in spermatogenesis due to various hypothalamic pituitary diseases, as well as primary spermatogenesis failure due to different etiologies. At the time of clinical diagnosis, there are no obvious signs of obstruction on reproductive ultrasound, the testicular volume of patients is often small (< 10 ml), and serum FSH levels may be decreased, normal, or elevated (may be more than 2 times higher than the upper limit of normal) depending on the situation. In such patients, the testicles cannot produce sperm or only a very small amount of sperm, resulting in the inability to find sperm in the semen.