ClearPetra™ Vacuum-assisted Ureteral Access Sheath Vs Traditional Approach
- Conditions
- Kidney StoneNephrolithiasis
- Interventions
- Device: ClearPetra Ureteral access sheath
- Registration Number
- NCT06547632
- Lead Sponsor
- University of Kansas Medical Center
- Brief Summary
Ureteroscopy has been considered the best approach when treating renal stones smaller than 2 cm. This procedure is usually performed together with ureteral access sheaths, which helps protect the ureter mucosa and lowers intrarenal pressure.
Recently, a new vacuum-assisted ureteral access sheath called ClearPetra has entered US market and allows for continuous stone fragmentation and aspiration.
Because there is little information on comparing this device with traditional approach (no sheath or non-vacuum-assisted sheath) in American population, we aim to compare those devices in terms of their ability to clear the kidney from kidney stones, as well as reduce infection rates postoperatively.
- Detailed Description
Retrograde intrarenal surgery (RIRS) is now considered gold-standard for treatment of renal stones smaller than 2 cm. This procedure often employs a ureteral access sheath (UAS), as it helps to reduce intrarenal pressure and protects the ureter mucosa when basketing is required. However, the challenge imposed by residual stone fragments and sepsis remains. Additionally, natural elimination of residual stone fragments may induce renal colic, hematuria an even the potential for new stone development. Recently, a new vacuum-assisted ureteral access sheath (VA-UAS) named ClearPetra™ provides concomitant stone fragmentation and aspiration.
The new ClearPetra™ vacuum assisted ureteral access sheath allows simultaneous fragmentation and extraction of stones. It is a disposable access sheath equipped with a continuous flow aspiration mechanism. Previous studies have demonstrated the safety and effectiveness of ClearPetra™ in RIRS Comprehensive comparative investigations between ClearPetra™ and traditional UAS in RIRS are lacking in American population. We aim to compare the outcomes of using VA-UAS (ClearPetra™) or traditional approach (no sheath or non-vacuum-assisted sheath) to treat patients with stone burden between 1.0 - 2.5 cm.
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 150
- Males or females over18 years of age
- Undergoing primary flexible ureteroscopy for retrograde intrarenal surgery
- Total stone burden between 1.0 to 2.5 cm
- Undergoing bilateral stone treatment during the same procedure
- Patients with known genitourinary anatomical abnormalities
- Uncorrected coagulopathy
- Patients with urinary diversions
- Chronic external urinary catheters
- Women who are pregnant
- Immunosuppressed patients
- Non-elective procedures
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description 1. RIRS WITH VACUUM-ASSISTED URETERAL ACCESS SHEATH ClearPetra Ureteral access sheath In Arm 1, participants will undergo RIRS with ClearPetra™ vacuum-assisted ureteral access sheath. Participants will undergo RIRS per standard of care.
- Primary Outcome Measures
Name Time Method Stone Free Status between ClearPetra and traditional approach 90 days Stone free is defined as no residual stones \>2mm in post operative CT scan
- Secondary Outcome Measures
Name Time Method Total operative time between ClearPetra and traditional approach 1 day Time from scope insertion to scope removal from the patient
Urinary tract infection between ClearPetra and traditional approach 30 days of procedure Data collection searching for urine tract infection signs, symptoms, antibiotic administration and culture
Trial Locations
- Locations (1)
University of Kansas Medical Center
🇺🇸Kansas City, Kansas, United States