# Zephyr Valve Registry (ZEVR)

> **NCT04186546** · — · ACTIVE_NOT_RECRUITING · sponsor: **Pulmonx Corporation** · enrollment: 150 (estimated)

## Conditions studied

- Emphysema

## Interventions

- **DEVICE:** Zephyr Valve Procedure

## Key facts

- **NCT ID:** NCT04186546
- **Lead sponsor:** Pulmonx Corporation
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2019-11-25
- **Primary completion:** 2026-12-31
- **Final completion:** 2026-12-31
- **Target enrollment:** 150 (ESTIMATED)
- **Last updated:** 2025-04-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04186546

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04186546, "Zephyr Valve Registry (ZEVR)". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT04186546. Licensed CC0.

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