# Embolization of the Middle Meningeal Artery With ONYX™ Liquid Embolic System for Subacute and Chronic Subdural Hematoma

> **NCT04402632** · NA · COMPLETED · sponsor: **Medtronic Neurovascular Clinical Affairs** · enrollment: 600 (actual)

## Conditions studied

- Subdural Hematoma

## Interventions

- **PROCEDURE:** Surgical Management
- **DEVICE:** Onyx™ Liquid Embolic System (LES) Embolization
- **OTHER:** Observation Only
- **DEVICE:** Onyx™ Liquid Embolic System (LES) Embolization
- **PROCEDURE:** Surgical Management

## Key facts

- **NCT ID:** NCT04402632
- **Lead sponsor:** Medtronic Neurovascular Clinical Affairs
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-10-27
- **Primary completion:** 2024-12-19
- **Final completion:** 2025-04-03
- **Target enrollment:** 600 (ACTUAL)
- **Last updated:** 2025-12-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04402632

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04402632, "Embolization of the Middle Meningeal Artery With ONYX™ Liquid Embolic System for Subacute and Chronic Subdural Hematoma". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT04402632. Licensed CC0.

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