Urethral sounding

What is urethral sounding?

Urethral sounding is the insertion of an object into the urethra. They are high polished stainless-steel rods with rounded tips and handles which come in various sizes that are close to one another - differing in diameter by a half a millimetre or less in most cases. There lengths vary from 8 inches to 11 inches depending on their usage and design.

Medically, their purpose is to gently and gradually enlarge the urethra thereby removing any blockages,dilatation of strictures or for obtaining access to the bladder in urological surgery.  

In medical play, urethral sounds are a form of sexual stimulation and exploration for both women and men, and I just realise it is also called “cock-stuffing”. 

Anatomy of urethra

The urethra is a part of the body found on both the male and female genitals. In men, the urethra is around eight inches long, and runs along the length of the penis, through the prostate, and up to the bladder. It carries both urine and semen. In women, the urethra is much shorter, usually being around two inches long. The female urethra connects directly to the bladder, and only carries urine. Both sexes have a urethral sphincter, which allows them to control when urine can exit the body, and men have a second one to restrict urine during ejaculation.

London Medical Fetish Dominatrix Madame Li-Ying’s medical blog

Sound play is not rocket science, it is a deeply satisfying and intense experience if done correctly. However, it is also a sexual activity that brings certain risks.

Hygiene and safety:

Sterilisation: Always sterilise your tools in medical play sessions. If you do not want to invest in an autoclave there are other products such as Virkon and Perasafe which is excellent for sterilisation. I will write another blog about sterilising instruments soon. Rinse item with mineral water after sterilising. Do not use tap water.

As soon as the item is exposed to air it is no longer sterile so sterilise it just before you use it to minimise risk.

Hands and gloves: Scrub your hands with antibacterial soap, don’t forget to scrub your nails. On top of that use individual packed sterile gloves for extra protection. It is important to know that non-sterile gloves (non individual packed latex or nitrile gloves) are typically used for non insertion procedures and examinations i.e. anal play. Sterile gloves are used to carry out insertion procedures such as sounds and catheterisation.

Clean the area: Clean the penis with sterests unisepts especially the external opening of the urethra (meatus) .

Sterile lubricant: Make sure you use lots of lube to help the insertion nice and smooth. Use water based sterile lube sachets. Do not use oil based lube as it is hard to expel afterwards and encourages the build up of microbes and results in infection. Do not use saliva as lube.

Choose the right size: Depends on the sub’s experience. I always start with the appropriate size and work my way up to avoid overstretching the tissue.

Go slow, don’t force: Insertion is one of the most sensitive part of urethral play and it should be done with care. Insert carefully, gently guide the sound into the urethra, don’t force, take your time, be mindful of how your body feels. Stop anytime if there is pain, resistance or “block”. Do not wank the sound in and do not wank when the sound is inside the urethra. I have seen too many people do this, they obviously overlooked the risk of urinary tract infections, tissue damage and false passages. 

You shouldn’t try sounding if:

Any abnormal discharge coming out from the urethra

Outbreak of STDs

Recent UTI

A history of UTIs

Difficulty passing urine

Problems with sounding/catheterisation

Prostate gland enlargement

History of surgical treatment for prostate or bladder cancer

A prostate condition like: prostatitis, benign prostatic hyperplasia or prostate cancer.

London Asian Medical Dominatrix Madame Li Ying demonstrating urethral sound play

Different types of sounds I use in my medical play sessions: 

I always purchase surgical grade stainless steel, titanium or silicone made products. 

Hegar sounds: 

This is technically a uterine sound, rather than a urethral sound. Hegar sound are used to induce cervical dilation in order to gain entry to the interior of the uterus, they are widely used in gynaecology to open up the cervix. 

Hegar sounds are truly a good choice for a beginner who wants to try urethral stretching because of the shape, I start with the second smallest sound in the kit and build the way up from there. 

I use Hegar in most of my medical play sessions.

Rosebud sounds:

Also called Bake or bullet sounds. I like them because they are thin, non-intimidating and relatively short. The tip can be used for targeted stimulation of sensitive urethral spots or it can simply provide additional stimulation to the urethral walls during use.

There are other types of sound I would like to bring into my medical play sessions such as Van Buren and Guyon but I would like to investigate more first.

Hope you enjoy reading my blog. If there is anything you would like me to cover in medical play (within my knowledge) please email me I will consider. 

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What is Catheterisation?

Catheterisation is very common in medical play. So as a professional dominatrix that specialises in medical play it is my responsibility to make sure I am positioned as an expert in the procedure.

The feeling of a tube inserted up through the urethra and into the bladder which allows the flow of urine to be controlled by the dominant partner, the submissive can no longer control their own urinary function.

Having a catheter inserted into the urethra can feel physically arousing, as the urethra is very sensitive, some submissive have an urge to masturbate when the catheter is inside them, this is because the stimulation seems to trigger the brain’s pleasure centre that ordinarily responds to urination or ejaculation.

I have people asking me how catheterisation is done in my medical play sessions, I am going to explain here and hope this will satisfy your curiosity and ease some of your concerns.

Different types of catheters

There are different type of catheters, they are:

  • Indwelling catheters (urethral suprapubic catheters also known as Foley catheters)
  • External catheters (condom catheters)
  • Short term catheters (intermittent catheters) 

I use indwelling catheters in my medical play sessions. Size 14-16 French (gauge) for men. I use female catheter for female clients because women have shorter urethras. 


In medical play, first and foremost is sterilisation. I don’t need to sterilise a catheter because it is pre-packed and sterilised. 

Before the catheterisation, I need to wash/scrub my hands again before creating a sterile field using a sterile pack. The purpose for that is to reduce the number of microbes present to as few as possible. Placing sterile surgical drapes around the client’s genital area and on the stand that will hold sterile instruments and other items needed during the procedure. 

My principle: All items used within a sterile field must be sterile. Germs can travel along the catheter and cause an infection in the sub’s bladder or kidney; it is called catheter-associated urinary tract infection aka CA-UTI. 


Put on sterile gloves, clean the submissive’s genital and the surrounding areas with a cotton-ball dipped in antiseptic solution. Beginning at the urethra, the cleansing is performed in a circular motion, moving outward to the surrounding areas. 

Change to another pair of sterile gloves, open the package with sterile scissors, expose about 1.5 inches for sliding in, keep the rest in the packet. Lubricate the tip of the catheter with sterile lubricant, slowly expose/insert the rest of the catheter inside the urethra.

Once the tip of the catheter reached the bladder, urine will start to flow into the drainage bag, that also means the balloon for holding the catheter is in the bladder. It is then slowly inflated with 10cc of water using a syringe. Inflating the balloon should not be painful.

In my medical sessions I combine a few things while my sub is being catheterised, for example needle play, suturing or electro stimulation to make the session as exciting as possible.

How to remove the catheter

The catheter balloon needs to be deflated by inserting a syringe into the catheter valve and pulling back on the syringe. Once the balloon is empty, the Foley catheter can be pulled out.

Are you ready to experience catheterisation?

I offer this as part of my professional medical dominatrix service in London. Find Out More > 

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