# Under Direct Vision vs Under Non Direct Vision of Insertion of UAS in RIRS

> **NCT03717285** · NA · UNKNOWN · sponsor: **Guohua Zeng** · enrollment: 129 (estimated)

## Conditions studied

- Urolithiasis

## Interventions

- **PROCEDURE:** Insert the UAS under direct vision
- **PROCEDURE:** Insert the UAS under non direct vision

## Key facts

- **NCT ID:** NCT03717285
- **Lead sponsor:** Guohua Zeng
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2018-09-10
- **Primary completion:** 2019-09-10
- **Final completion:** 2019-12-31
- **Target enrollment:** 129 (ESTIMATED)
- **Last updated:** 2018-10-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03717285

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03717285, "Under Direct Vision vs Under Non Direct Vision of Insertion of UAS in RIRS". Retrieved via AI Analytics 2026-07-03 from https://api.ai-analytics.org/clinical/NCT03717285. Licensed CC0.

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