After kidney stone surgery, many patients are surprised when they learn that a tube called a Double J stent, also known as a ureteral stent or JJ stent, will remain inside their body.

Common questions include:

“My surgery is finished. Why do I still need a stent?”
“Will the stent cause any side effects?”
“Does it need to be removed later?”

These are all common concerns. Understanding the role of a Double J ureteral stent can help patients better prepare for their recovery after urological surgery.

1. What Is a Double J Stent?

A Double J stent (JJ stent) is a flexible tube commonly used in urology and kidney stone treatment. It is placed inside the ureter, creating a temporary pathway between the kidney and the bladder.

The curled ends of the stent help keep it in position—one end in the renal pelvis and the other in the bladder—while supporting urinary drainage from the kidney to the bladder.

Double J stents are available in different diameters and lengths. The appropriate size is selected by the physician based on factors such as the patient's anatomy and clinical condition.

2. Why Is a Double J Stent Placed After Surgery?

A ureteral stent may be placed after kidney stone surgery, ureteroscopy, or other urological procedures for several important reasons:

1). To Promote Urinary Drainage

The stent helps maintain urine flow from the kidney to the bladder, especially when there is hydronephrosis, ureteral obstruction, or infection associated with long-term urinary obstruction.

2). To Support Ureteral Healing

After surgery, the ureter may experience swelling or temporary injury. A Double J stent can support the ureter during healing and help reduce the risk of postoperative obstruction or ureteral narrowing.

3). To Help Small Stone Fragments Pass

By maintaining the ureteral passage, the stent may facilitate the passage of small residual stone fragments after treatment.

4). To Prepare for Further Treatment

For patients with larger residual stones who may require a second procedure, a ureteral stent can help maintain drainage and provide favorable conditions for subsequent treatment. It may also help reduce the risk of recurrent ureteral obstruction, renal colic, and hydronephrosis.

3. What Symptoms Can Occur While a Double J Stent Is in Place?

Some patients may experience temporary ureteral stent symptoms, including:

• Lower abdominal discomfort or pressure
• Flank or lower back pain, especially during urination
• Frequent urination
• Urgent need to urinate
• Pain or discomfort during urination
• Blood in the urine, particularly after physical activity
• A sensation of incomplete bowel evacuation in some patients

These symptoms are often related to irritation caused by the stent. Many patients gradually adapt, and symptoms may become less noticeable over time.

However, patients should always contact their healthcare provider if they experience severe pain, persistent heavy bleeding, fever, or other concerning symptoms.

4. Does a Double J Stent Need to Be Removed?

Yes. In most cases, a temporary ureteral stent needs to be removed or replaced according to the physician's treatment plan.

The stent removal time varies depending on the patient's condition and the type of procedure performed. It may range from a short postoperative period to several months.

Patients should follow their physician's instructions and return for ureteral stent removal at the recommended time. A stent should not be forgotten or left in place longer than medically advised.

5. What Should Patients Pay Attention to While Living With a Ureteral Stent?

Avoid Holding Urine for Long Periods

Patients should avoid prolonged urine retention and follow their doctor's recommendations regarding bladder habits.

Stay Well Hydrated

Adequate fluid intake can help maintain urine flow and may reduce the risk of urinary complications. The appropriate amount of fluid intake may vary depending on the patient's individual condition and should follow medical advice.

Avoid Strenuous Physical Activity

Intense physical activity or excessive movement may increase discomfort, irritation, or blood in the urine in some patients. Follow your healthcare provider's recommendations regarding daily activities during the recovery period.

EVT Medical Double J Stent for Urological Drainage and Support

EVT Medical Double J Stent is designed for placement between the renal pelvis and bladder through minimally invasive or open surgical procedures, providing ureteral support and urinary drainage.

Key Product Features

1. Hydrophilic Coating for Smooth Placement
The stent body is covered with a hydrophilic coating, helping provide a smooth surface and facilitating easier advancement during stent placement.

2. Polyurethane Material
Made of polyurethane, the stent features a smooth surface designed to facilitate passage, including through narrowed areas when clinically appropriate.

3. Multiple Guidewire Kit Options
Different guidewire configurations are available to support varying clinical and procedural requirements.

4. Large Internal Lumen for Effective Drainage
The stent is designed with a large internal lumen to support smooth and effective urinary drainage.