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RIRS (Retrograde Intrarenal Surgery) removes kidney stones with a flexible telescope and holmium laser passed through the natural urine passage — no cuts, no stitches and usually home within a day. Dr. Kumar Rajesh Ranjan, M.Ch (Urology), performs RIRS at Satyadev Super Speciality Hospital, Patna.
RIRS (Retrograde Intrarenal Surgery) is a minimally invasive kidney stone operation in which a thin, flexible ureteroscope is passed through the urethra, bladder and ureter into the kidney, and a holmium laser breaks the stone into dust or tiny fragments. It is generally used for kidney stones up to about 2 cm, involves no cut on the body, and most patients go home the same day or the next day. In Patna, RIRS is performed by M.Ch urologist Dr. Kumar Rajesh Ranjan at Satyadev Super Speciality Hospital.
In RIRS the urologist reaches the stone from inside, travelling up the same path urine takes down. A flexible ureteroscope, thinner than a pencil, bends inside the kidney so it can reach stones in every part — including the lower pole, which is hard to reach by other methods.
A holmium laser fibre passed through the scope breaks the stone. Small fragments are removed with a basket or turned into fine dust that passes out with urine over the next days.
For stones larger than about 2 cm or staghorn stones, PCNL keyhole surgery usually clears the stone faster in one sitting. Dr. Ranjan advises which one suits your stone; see the overview on our kidney stone treatment page.
RIRS is chosen based on stone size, position and your health.
Single or multiple kidney stones
Hard-to-reach parts of the kidney
Heart or stroke patients
Where keyhole access is difficult
Large or staghorn stones
Infection must be treated first
All three treat kidney stones; the right one depends on the stone.
| Feature | RIRS (Laser) | PCNL / Mini-PCNL | Shockwave (ESWL) |
|---|---|---|---|
| Access | Natural urine passage — no cuts | Small keyhole in the back | From outside the body |
| Best stone size | Up to ~2 cm | Over 2 cm, staghorn | Small, soft stones |
| Lower-pole stones | Good | Very good | Poor clearance |
| Hospital stay | Same day / 1 night | 1-2 nights | Day care |
| Repeat sessions | Occasionally for large stones | Rarely | Often |
| Back to work | 3-5 days | 5-7 days | 1-2 days |
Step by step, from tests to going home.
Non-contrast CT shows stone size and hardness. Urine culture, kidney function and fitness tests are done.
Before surgeryGeneral or spinal anaesthesia.
10-15 minutesA thin sheath is placed in the ureter and the flexible ureteroscope is guided into the kidney.
First 10-15 minutesHolmium laser dusts or fragments the stone; pieces are removed with a basket.
30-75 minutesA DJ stent is usually placed for 1-3 weeks. Most go home the same day or next morning.
Same day / next morning
RIRS has one of the fastest recoveries among stone surgeries.
Walking within hours; mild burning when passing urine.
Light activity at home; drink 2.5-3 litres of water.
Back to desk work for most people.
DJ stent removed in a short day procedure.
Follow-up scan to confirm the kidney is stone-free.
Results in urology depend on the surgeon's training and the equipment available. Here is what you get at Satyadev Urology.
MBBS, MS, M.Ch (Urology), FMAS, with fellowship training in advanced laparoscopic urology and kidney transplant at Urocare, Kochi and Aesculap Academy, Germany.
Holmium laser, flexible ureteroscopes, C-arm fluoroscopy, HD laparoscopy and modular operation theatres in one hospital.
Recipient of the Stars of Bihar Award, the Acharya Charak Medical Award and Icon of Health, Bihar.
Round-the-clock critical care and anaesthesia support for high-risk and emergency patients.
Cashless treatment for eligible patients under Ayushman Bharat PMJAY and most major insurers and TPAs.
Consultation, CT and ultrasound, lab tests, surgery and follow-up under one roof — no need to travel to Delhi or Vellore.
11:00 AM – 3:00 PM, Monday to Saturday. Consultation ₹800, valid for 15 days.
3:00 PM – 4:00 PM, Monday to Saturday. Sunday OPD closed; emergency open 24×7.
Old prescriptions, scan and blood reports, and a list of your current medicines, especially blood thinners.
Read the full profile of Dr. Kumar Rajesh Ranjan, urologist in Patna, his doctor profile at Satyadev Hospital, or the hospital OPD timings.
All options for kidney stones: RIRS, PCNL, URSL and medicines.
Keyhole surgery for large and staghorn kidney stones.
Laser removal of stones stuck in the ureter.
What decides the cost and how Ayushman Bharat helps.
Laser cystolithotripsy through the urine passage.
Treatment for enlarged prostate and urine blockage.
"One of the best doctors for kidney problems in Patna. All advanced procedures like PCNL, URS, laparoscopic nephrectomy done here. Clean and hygienic."
Rajan Sharma"Dr. Kumar Rajesh Ranjan ne clearly samjhaya ki darne ki koi baat nahi hai aur treatment possible hai. Mera operation yahan successfully hua. Ayushman Bharat card se treatment ho gaya."
Ajit Thakur"Bahut bahut dhanyawad sir. Kisi bhi tarah ki dikkat nahi hui. Yahan mera bacche ka ilaj bahut hi bdhiya dhang se hua hai."
Rupesh PaswanAnswered by the urology team at Satyadev Hospital, Patna.
Dr. Kumar Rajesh Ranjan, M.Ch (Urology), performs RIRS laser kidney stone surgery at Satyadev Super Speciality Hospital, Patna, using a flexible ureteroscope and holmium laser.
RIRS is generally used for kidney stones up to about 2 cm. Larger stones can sometimes be treated in two sittings, but PCNL is usually better for stones over 2 cm.
Neither is better for every stone. RIRS has no cuts and faster recovery for stones up to about 2 cm; PCNL clears large and staghorn stones more reliably in one sitting.
Usually yes. A DJ stent is placed for 1-3 weeks to keep urine flowing while the ureter heals, then removed in a short day procedure.
Most patients go home the same day or next day and return to desk work in 3-5 days.
Yes, RIRS is available under Ayushman Bharat PMJAY at Satyadev Super Speciality Hospital for eligible patients, and under CGHS, ESIC and most TPAs.
RIRS में पेशाब के रास्ते से पतली दूरबीन किडनी तक ले जाकर लेज़र से पथरी तोड़ी जाती है। इसमें कोई चीरा नहीं लगता और मरीज आमतौर पर उसी दिन या अगले दिन घर चला जाता है।
सत्यदेव सुपर स्पेशलिटी हॉस्पिटल, मजिस्ट्रेट कॉलोनी, पटना में Dr. Kumar Rajesh Ranjan (M.Ch यूरोलॉजी) RIRS लेज़र सर्जरी करते हैं। अपॉइंटमेंट के लिए 8050295197 पर कॉल करें।
Call +91-8050295197 or +91-8235152796, or use the contact page. Bring your CT scan and reports to the first visit.
No-cut laser surgery for kidney stones, by an M.Ch urologist in Patna. Call now or visit us at Magistrate Colony, Khajpura, Patna.
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