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Chronic Subdural Hematoma Embolization With Detachable Coils

Safety and Efficacy of Chronic Subdural Hematoma Embolization With Detachable Coils

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07291427
Acronym
SEED
Enrollment
150
Registered
2025-12-18
Start date
2026-06-02
Completion date
2028-09-01
Last updated
2026-07-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Subdural Hemorrhage (cSDH)

Keywords

Subdural hemorrhage, Coils, Middle meningeal artery

Brief summary

This is a prospective, multi-center, post market registry study designed to evaluate the safety and efficacy of treatment with Balt coils in patients with chronic subdural hematoma (cSDH).

Detailed description

The primary objective of this observational registry study is to assess the safety and efficacy of Balt Coils as an adjunct to middle meningeal artery (MMA) embolization in a real-world setting among patients undergoing treatment for chronic subdural hematoma (cSDH), and explore correlations between patient characteristics, clinical characteristics, and outcomes. By collecting comprehensive, real-world data, the registry will characterize procedural inputs, document clinical and radiographic outcomes, and explore variation in technique and practice setting. The overarching goal is to generate a more complete understanding of Middle Meningeal Artery Embolization (MMAE) in diverse clinical environments, inform future prospective studies, and guide evidence-based adoption of this evolving therapy. Patients may be treated with Balt coils regardless of enrollment in the study as the decision to place the coils should be made independently as per standard of care and prior to enrollment in the study.

Interventions

DEVICEBalt coils: (Balt USA, LLC)

MMA embolization utilizing Balt Coils

surgical or bedside evacuation pre or post-surgical debridement

Sponsors

Icahn School of Medicine at Mount Sinai
Lead SponsorOTHER
John Muir Health
CollaboratorOTHER
Carondelet Neurological Institute
CollaboratorUNKNOWN

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥ 18 * Patients experiencing unilateral or bilateral non-acute subdural hematoma confirmed by CT imaging. Acute on Chronic or mixed density hematoma allowed. * A clinical decision has been made to use coiling and/or embolics as treatment, with or without surgical debridement, independently as per standard of care and prior to enrollment in the study. * Signed informed consent obtained by patient or Legal Authorized Representative (LAR)

Exclusion criteria

* Primary acute SDH * Prior MMAE in target territory * Premorbid mRS \> 3 * Common carotid stenosis \>70% or prior carotid stent placement * Significant medical contraindication to angiography (kidney failure/disease) * Anatomical variations that would make MMA embolization difficult or unsafe * Currently participating in an investigational (drug, device, etc.) clinical trial that may confound study endpoints * Pregnancy * Life expectancy ≤ 1 year

Design outcomes

Primary

MeasureTime frameDescription
Change in hematoma volume180 daysChange in hematoma volume based on CT imaging
Change in maximal thickness180 daysChange in maximal thickness based on CT imaging
Change in midline shift180 daysChange in midline shift (mm) based on CT imaging
Number of periprocedural major disabling stroke or any death30 daysNumber of periprocedural major disabling stroke or any death
Number of participants with symptomatic recurrence progression requiring retreatment180 daysNumber of participants with symptomatic recurrence progression of the SDH requiring retreatment

Secondary

MeasureTime frameDescription
Number of Device-related adverse events (AE), serious adverse events (SAE), and procedural-related SAE180 daysNumber of Adverse events and serious adverse events related to the device as assessed by an independent medical monitor
Number of Acute successful embolization of the target vesselImmediately post-procedureDetermination of successful embolization based on angiographic imaging
Change in EuroQoL 5 dimensions 5 levels (EQ-5D-5L)180 daysThe EQ-5D is a generic instrument for describing and valuing health. The new version includes the 5 levels of severity in each of the existing five EQ-5D dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, and now called the EQ-5D-5L, each assessed on a 5-point scale (1=no problem, 2=slight problems, 3=moderate problems, 4=severe problems, 5=extreme problems). Participants score each dimension based on their health that day and their responses are used to generate a health index score. Index scores could range from \<0 (a health state equivalent to dead with negative values representing a state worse than dead) to 1 (full health). Lower scores indicate a higher QoL.

Countries

United States

Contacts

CONTACTSukaina Davdani
Sukaina.Davdani@mountsinai.org(212) 241-2524
CONTACTSydney Edwards
Sydney.Edwards@mountsinai.org(212) 241-2524
PRINCIPAL_INVESTIGATORChristopher Kellner

Icahn School of Medicine at Mount Sinai

PRINCIPAL_INVESTIGATORBenjamin Yim

John Muir Health

PRINCIPAL_INVESTIGATORAlexander Coon

Carondelet Neurological Institute

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 25, 2026