This article was translated from the original Portuguese. Português
Double-J Stent
- What is a double-J stent?
A double-J stent is a flexible tubular device 10 cm to 35 cm long, roughly the thickness of a pen refill, designed to ensure the flow of urine between the kidney and the bladder. Urine can flow both through the internal drainage channel and along the outer surface of the stent.
It is often used after endoscopic procedures on the urinary tract (with no incisions) to treat stones or narrowing of the ureter.
The name double J comes from the J-shaped ends, which are designed to keep the stent correctly positioned.
When is a double-J stent used?
It is commonly used after surgery to treat stones in the kidneys and ureter. It can also be used in any abdominal surgery in which there is a risk of obstructing the normal flow of urine.
- Where is the double-J stent placed?
The upper end of the double-J stent sits in the urine-collecting system of the kidney. The lower end rests inside the bladder.
- How is a double-J stent inserted?
There are 3 ways to insert a double-J stent
a - Using a micro-camera introduced through the urethra. In this approach, the urologist identifies the ureteral drainage opening inside the bladder and advances the stent using thin special guidewires. Correct positioning of the stent is checked with an X-ray machine during the procedure.
b- Using the percutaneous technique. In this approach, the surgeon makes an 8 mm incision in the back, at the level of the kidney being operated on, and inserts the stent in a similar way to the previous technique
c- Through open or laparoscopic (video) surgery. In this approach, the surgeon accesses the inside of the abdominal cavity (openly or laparoscopically), identifies the channel connecting the kidney to the bladder (ureter), makes a small opening and inserts the stent. Finally, the small opening is closed and the surgeon moves on to other steps, depending on the type of surgery planned.
- How long does the double-J stent stay in place?
The length of time varies from person to person. For quick procedures, such as the treatment of kidney stones, the stent is usually removed within 1 week.
Beyond the stone: a complete urological evaluation
At Clínica Uro Onco, the kidney stone consultation also reviews your urological health as a whole — with a special focus on prevention and early diagnosis of prostate, bladder and kidney cancers:
- PSA and prostate cancer risk;
- blood in the urine and bladder health;
- kidney masses and cysts found on imaging tests.
In patients undergoing cancer treatment, the stent is usually replaced every 3 months.
There are stents made of highly resistant material designed to be replaced every 8 months, but they are not used frequently.
- How is a double-J stent removed?
Removing a double-J stent is a simple procedure performed at specialized urology clinics or in a day hospital. For greater patient comfort, we use local anesthesia and light sedation.
The urologist inserts a micro camera through the urethra, fitted with an adapted grasper, to remove the stent by its tip positioned in the bladder.
No special preparation is needed for the procedure, and patients are discharged immediately after the device is removed.
Minor bleeding after stent removal, or even mild discomfort when urinating, is common. These symptoms are easily controlled with painkillers and anti-inflammatory drugs for a short period of time.
In some cases, antibiotics may be needed for a few days after the procedure.
To make stent removal even easier, your urologist may attach a small nylon string to the end of the stent. The string comes out through the urethra and is taped to the inner thigh.
By gently pulling on this string, the stent can be removed without having to insert the micro camera into the bladder.
Can I have sex while I have a double-J stent?
Yes, sexual intercourse is not contraindicated in people who have a double-J stent.
- Caring for a double-J stent
There is no specific care required for the stent itself, but drinking plenty of fluids, such as water and natural juices, is recommended.
In addition, avoid holding in the urge to urinate for long periods, and avoid intense physical activity such as running and strenuous cycling.
Antibiotics and anti-inflammatory medications may be needed while the device is in place.
- Is it normal to feel pain with a double-J stent?
Pain is not common, but some people report a feeling of heaviness or discomfort in the back and lower abdomen.
If you develop fever, general malaise, chills, loss of appetite or severe discomfort when urinating, it is essential to inform the medical team.
Acute pyelonephritis can be a complication related to the use of the stent. Fortunately, it is a rare event and responds very well to appropriate treatment.
- What symptoms are normal with a double-J stent?
Discomfort when urinating, burning or even minor bleeding may occur while the stent is in place.
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See reviews Book a consultationBeyond the stone: a complete urological evaluation
At Clínica Uro Onco, the kidney stone consultation also reviews your urological health as a whole — with a special focus on prevention and early diagnosis of prostate, bladder and kidney cancers:
- PSA and prostate cancer risk;
- blood in the urine and bladder health;
- kidney masses and cysts found on imaging tests.
Dr. Bruno Benigno
Urologist and uro-oncologic surgeon (CRM-SP 126.265 · RQE 60022). More than 1,500 robotic surgeries. Member of the AUA, EAU and SBU. Meet Dr. Bruno · In the Media
This content is educational and does not replace a medical consultation. Each case must be assessed individually, based on AUA, EAU and NCCN guidelines.
