The Department of Urology at Funan County Third People’s Hospital has officially introduced a next-level minimally invasive technology for urinary stones — the EVT Flexible Ureteroscope + Negative Pressure Ureteral Access Sheath.
This is basically the “ultimate upgrade” for kidney stone treatment: no cutting, ultra-precise, faster recovery, and way cleaner stone removal. It completely flips the script on traditional stone surgery and helps patients finally say goodbye to the nightmare of kidney stones.
Negative Pressure Ureteral Access Sheath Forms the Perfect Duo with the Flexible Ureteroscope
To understand this technology, we first start with flexible ureteroscopic lithotripsy.
It is a minimally invasive procedure that uses the body’s natural urinary tract: urethra → bladder → ureter → kidney. The doctor inserts a flexible ureteroscope with a diameter of only 2.7 mm into the kidney and uses holmium laser to crush stones into powder. With traditional lithotripsy, stone fragments are either excreted naturally — easily leaving residual fragments that cause recurrence — or retrieved repeatedly with a stone basket, which is time‑consuming and labor‑intensive.
The negative pressure ureteral access sheath is the perfect solution to these pain points. Like a flexible suction tube, its distal 10 cm segment can bend up to 160° and is equipped with negative pressure suction. It can follow the ureteroscope into all renal calyces, suctioning stone powder and debris while lithotripsy is performed. It truly realizes simultaneous lithotripsy and suction, perfectly solving the problem of difficult residue clearance in traditional surgery.
4 Major Advantages That Redefine Stone Surgery
Compared with traditional treatments like ESWL, PCNL, or open surgery, this technology is basically operating on “next-gen mode.”
1.Faster&Cleaner Stone Removal
2. Safer Procedure, Lower Infection Risk
3. Truly Minimally Invasive
4. Handles Even Complex Stones
Real Patient Stories: A New Beginning for Kidney Stone Patients!
Who Should Consider This Procedure?
This minimally invasive “black-tech” option may be ideal if you are:
- someone whose shockwave lithotripsy failed
- a patient with 2–3 cm kidney stones
- dealing with multiple or complex kidney stones
- diagnosed with staghorn stones
- elderly or obese and unsuitable for invasive surgery
- suffering from impacted upper ureteral stones
- worried about stone recurrence or residual fragments
EVT is redefining kidney stone surgery with precision, efficiency, and faster recovery for patients!
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