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Updated: Feb 15, 2026

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Use of a novel embolic filter in carotid artery stenting: 30-Day results from the EMBOLDEN Clinical Study
William A Gray1, Manish Mehta2, Firas Alani3
1Lankenau Heart Institute, Main Line Health, Wynnewood, Pennsylvania.
Insights
The GORE Embolic Filter (GEF) demonstrated safety and effectiveness in carotid artery stenting for high-risk patients. This novel filter design achieved low rates of death, stroke, and myocardial infarction, exceeding performance goals.
Area of Science:
- Cardiovascular Interventions
- Medical Device Technology
- Vascular Surgery
Background:
- Carotid artery stenting (CAS) requires embolic protection to prevent complications.
- Filter design balances trackability with capture efficiency.
- The GORE Embolic Filter (GEF) utilizes a hybrid construction to optimize these parameters.
Purpose of the Study:
- To evaluate the safety and efficacy of a novel embolic protection filter (GEF) during CAS.
- To assess the GEF's performance in patients with severe carotid stenosis at high risk for carotid endarterectomy (CEA).
Main Methods:
- The EMBOLDEN study enrolled 250 high-risk patients undergoing CAS with the GEF and an approved stent.
- The primary outcome was a composite of death, stroke, and myocardial infarction (MI) at 30 days.
- Outcomes were assessed by independent neurological and angiographic core labs.
Main Results:
- Successful deployment of the GEF was achieved in 96.4% of procedures.
- The primary endpoint (30-day death, stroke, MI) occurred in 4.0% of subjects, significantly below the performance goal (P < 0.001).
- Thirty-day rates for death/major stroke and death/any stroke were 1.2% and 3.6%, respectively. Major adverse events were 5.4% in octogenarians versus 3.2% in non-octogenarians.
Conclusions:
- The GEF demonstrated high deployment success rates in high-risk patients undergoing CAS.
- The study met its primary endpoint, showing low rates of death, stroke, and MI, confirming the GEF's safety and effectiveness.
Objectives:
The EMBOLDEN study was conducted to test the safety and efficacy of a novel emboli protection filter design for use in carotid artery stenting (CAS) in patients with severe carotid stenosis who were at high risk of operative complications from carotid endarterectomy (CEA).
Background:
General considerations for filter design usually involve trade-offs between trackability/profile and wall apposition/capture efficiency. The GORE® Embolic Filter (GEF) is intended to address these design goals via a hybrid construction.
Methods:
Patients at high risk for CEA (N = 250) were treated with CAS using the GEF study device paired with an FDA-approved carotid stent. The primary outcome was death, stroke, and myocardial infarction (MI) at 30 days, compared to a pre-determined performance goal. Neurologic outcomes were judged by an independent assessor and angiographic results evaluated by an independent central core lab.
Results:
The GEF study device was successfully deployed in 96.4% of procedures. The primary endpoint of 30-day death, stroke, and MI occurred in 4.0% of subjects and was significantly lower than the pre-defined performance goal (P < 0.001). The 30-day rate for death and major stroke was 1.2% and for death and any stroke was 3.6%. The rate of major adverse events was 5.4% among octogenarians and 3.2% among non-octogenarians.
Conclusion:
In patients at high risk for CEA undergoing CAS, the GEF not only showed high rates of successful deployment but also met the primary endpoint of low death, stroke, and MI rates, thus demonstrating safety and effectiveness.
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