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Updated: Jun 25, 2026

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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
Aortic dissection false lumen treatment with novel shape memory polymer devices.
Dai Yamanouchi1,2, Yusuke Sakurai2, Masaru Nemoto2
1Division of Vascular Surgery, Department of Surgery, University of Wisconsin, Madison, WI.
Summary
Shape memory polymer (SMP) devices successfully treated aortic dissection false lumen in five patients. These innovative devices led to reduced aorta diameter and true lumen restoration, with no complications observed.
Area of Science:
- Biomaterials Science
- Cardiovascular Surgery
- Medical Devices
Background:
- Aortic dissection poses significant risks, often requiring complex interventions.
- Treating the false lumen (FL) is crucial for managing aortic dissection.
- Existing treatments may have limitations in conformability and migration risk.
Purpose of the Study:
- To evaluate the feasibility and efficacy of novel shape memory polymer (SMP) devices for treating aortic dissection false lumen (FL).
- To assess the safety and performance of SMP devices in a case series of patients.
Main Methods:
- A case series involving five patients with aortic dissection treated using innovative, open-cell, porous SMP devices.
- Devices were designed for large volume, stability, flexibility, and radiolucency.
- Technical success and procedural outcomes were monitored.
Main Results:
- All five cases demonstrated technical success.
- Observed positive outcomes include decreased total aortic diameter, true lumen restoration, and FL reduction.
- Mean aortic diameter reduction was significant at 6 and 12 months post-procedure.
- No complications related to the SMP device or procedure were reported.
Conclusions:
- Innovative shape memory polymer (SMP) devices are a safe and effective option for treating aortic dissection false lumen (FL).
- The unique properties of SMP devices, including conformability and stability, facilitate successful treatment.
- Further investigation into SMP devices for aortic dissection management is warranted.
