Surgical sperm retrieval is an option for men with an absence of sperm or blockage of the tube (vas deferens) or non-obstructive azoospermia. Surgical sperm retrieval is timed to coincide with the egg collection procedure.
If enough sperm is retrieved it may be possible to freeze some for use at a later stage. The sperm collected is then used inject the eggs using ICSI.
Advanced Sperm Retrieval Process
Sperm can be collected directly from the epididymis situated inside the scrotum (the pouch holding the testicles) where sperm are stored and mature, using a fine needle and syringe. This is known as ‘percutaneous epidydimal sperm aspiration’ or PESA.
Sperm can also be retrieved from the testicles, a process known as ‘testicular sperm extraction’ or TESA.