# TruFreeze™ Airway Obstruction: TAO STUDY

> **NCT01903850** · PHASE4 · WITHDRAWN · sponsor: **CSA Medical, Inc.**

## Conditions studied

- Lung Disease Airways
- Lung Diseases, Obstructive
- Airway; Obstruction, With Emphysema
- Airway Obstruction

## Interventions

- **DEVICE:** spray cryotherapy

## Key facts

- **NCT ID:** NCT01903850
- **Lead sponsor:** CSA Medical, Inc.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2013-07
- **Primary completion:** 2014-05
- **Final completion:** 2014-09
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Withdrawn for business reasons
- **Last updated:** 2016-02-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01903850

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01903850, "TruFreeze™ Airway Obstruction: TAO STUDY". Retrieved via AI Analytics 2026-07-12 from https://api.ai-analytics.org/clinical/NCT01903850. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*