The Vasectomy Procedure: A Step-by-Step Explanation of How a Vasectomy Works
Knowing how a vasectomy procedure works can make the experience feel far less daunting. If you are considering a vasectomy, it is completely normal to have questions about what happens during the procedure, whether you will feel anything and how long it takes.
A vasectomy is a permanent form of contraception that works by interrupting the pathway sperm normally takes through the vas deferens. These tubes carry sperm away from the testicles. During the procedure, each vas deferens is accessed, divided and treated to prevent sperm from entering the semen.
At our clinic, vasectomies are performed using a no-scalpel technique under local anaesthetic. This means you remain awake during the procedure while the treatment area is numbed.
Here is a straightforward, step-by-step explanation of what to expect during the procedure.
Step 1: Local anaesthetic
Before the vasectomy procedure begins, the treatment area is prepared, and a local anaesthetic is used to numb the scrotum.
The anaesthetic injection is often the part patients are most anxious about. However, it is brief, and once the area is numb, you should not feel sharp pain while the procedure is being performed.
You may still notice some pressure, movement or pulling as the doctor works. This is normal and is different from feeling sharp pain. If you are uncomfortable at any point, let your doctor know so they can assess whether more local anaesthetic is needed.
Because the vasectomy procedure is performed under local anaesthetic, you remain awake throughout. General anaesthesia is not required.
Step 2: Accessing the vas deferens
Once the area is numb, the doctor accesses each vas deferens in turn.
At our clinic, a no-scalpel technique is used. Rather than making a traditional surgical incision, the doctor creates a small opening in the scrotal skin to access the vas deferens.
The vas deferens is the tube that carries sperm from the testicles. During the procedure, each vas deferens is carefully located and brought through the small opening so it can be treated.
Step 3: Dividing and treating the vas deferens
Once the vas deferens has been accessed, it is divided and the ends are treated using controlled electrocautery. At our clinic, a Hyfrecator electrocautery device is used during this part of the procedure.
Cauterisation is used as part of the vas deferens occlusion technique to help prevent sperm from passing through the treated ends. The aim is to interrupt the pathway sperm would normally take from the testicles through the vas deferens and into the semen.
Step 4: Finishing the procedure
Once both vas deferens have been divided and cauterised, they are returned to position, and the small skin opening is allowed to close. Because the no-scalpel technique uses a small opening rather than a traditional incision, skin stitches are generally not required. A dressing may be applied, depending on the vasectomy procedure, and you will be given specific instructions about caring for the area at home.
You will also be advised about recovery, including when you can return to normal activities and when you can resume sexual activity. The time can vary depending on the technique and clinical setting. At our clinic, the procedure generally takes around 15–20 minutes.
What Happens After the Vasectomy Procedure?
It is important to understand that a vasectomy does not provide immediate sterility.
Even after the vas deferens has been divided and treated, sperm may remain in the reproductive tract for some time after the procedure. You therefore need to continue using contraception until a post-vasectomy semen analysis confirms that the vasectomy has been successful.
Your doctor will advise you when to provide the semen sample and when you can stop using contraception. You should not assume the vasectomy is effective until you have received confirmation from your doctor.
Frequently Asked Questions About Vasectomy
Will I Be Awake During the Procedure?
Yes. A no-scalpel vasectomy is performed under local anaesthetic, so you remain awake throughout the procedure.
The local anaesthetic numbs the treatment area, meaning you should not feel sharp pain while the doctor accesses, divides and cauterises the vas deferens. You may still notice some pressure, movement or pulling during the procedure.
How Long Does the Whole Appointment Take?
The vasectomy procedure itself typically takes around 15–20 minutes. Your total appointment will be longer because it includes preparation before the procedure and a period of recovery observation afterwards.
Your clinic will provide specific instructions about what to expect on the day and what you need to do after the procedure.
Does a vasectomy Stop Ejaculation?
No. You will still be able to ejaculate after a vasectomy.
The vasectomy procedure prevents sperm from travelling through the vas deferens, but it does not stop semen production and does not normally change the appearance of the ejaculate.
Does a vasectomy affect Testosterone or Sex drive?
A vasectomy does not prevent the testicles from producing testosterone. It also does not stop you from ejaculating or having an orgasm.
Is a vasectomy Permanent?
Yes. A vasectomy is intended to be a permanent form of contraception. Although vasectomy reversal is sometimes possible, it is not guaranteed to restore fertility.
For this reason, the decision to have a vasectomy should be made carefully and with a clear understanding that it is intended to be permanent.
If you are considering a vasectomy and would like to understand what to expect, book a consultation with our clinic. Your doctor can explain the procedure, answer your questions and discuss what to expect before, during and after your vasectomy.
