Ureteroscopic Aspiration Dynamics and Stone Fragment Evacuation: In Vitro Comparison of the Second-generation CVAC System and Direct In-scope Suction
Abstract
OBJECTIVE: To compare the aspiration efficiency and fragment evacuation performance of the second-generation CVAC aspiration system with direct in-scope suction (DISS) devices. METHODS: Synthetic stones (Begostone) were sieved into 5 size groups (63 µm-3.3 mm). The CVAC catheter (7 Fr lumen) was tested against 2 DISS ureteroscopes (Pusen 3.6 Fr and 5.1 Fr). Standardized trials were performed using a Thermedx irrigation system (160 mmHg) and Neptune suction (155 mmHg). Endpoints included aspiration efficiency (g/min), clearance success within 180 seconds, time to clearance (Kaplan-Meier analysis), and clogging incidence. RESULTS: CVAC achieved significantly higher aspiration efficiency than DISS across all fragment sizes (P
Fields of Study & Subjects
Kidney Stones and Urolithiasis Treatments
Gallbladder and Bile Duct Disorders
Endodontics and Root Canal Treatments
Publication details
- Journal / source
- Urology
- Publisher
- Elsevier BV
- Volume
- 212
- Pages
- 3–7
- Publication date
- 30 March 2026
- Language
- EN