Can sperm be retrieved from a man once he has had vasectomy and used for artificial insemination?

Yes, it is possible to retrieve sperm from a man who has had a vasectomy and use it for artificial insemination. This process is called sperm retrieval, and there are two main methods:

1. Percutaneous epididymal sperm aspiration (PESA): This procedure involves using a needle to extract sperm directly from the epididymis, which is the tube that connects the testicles to the penis. PESA is typically performed under local anesthesia, and it is considered to be a minimally invasive procedure.

2. Testicular sperm aspiration (TESA): This procedure involves using a needle to extract sperm directly from the testicles. TESA is typically performed under local anesthesia, and it is also considered to be a minimally invasive procedure.

Once sperm has been retrieved, it can be used for artificial insemination. Artificial insemination is a fertility treatment in which sperm is placed into the woman's uterus. This can be done using a syringe, a catheter, or a pipette.

The success rate of artificial insemination with sperm retrieved after vasectomy depends on a number of factors, including the quality of the sperm, the woman's age, and the cause of infertility. However, the overall success rate is generally lower than that of artificial insemination with sperm that has not been surgically retrieved.