Related Experiment Videos
New expandable hydrogel-platinum coil hybrid device for aneurysm embolization
David F Kallmes1, Naomi H Fujiwara
1Department of Radiology, University of Virginia Health Services, Charlottesville, VA, USA.
AJNR. American Journal of Neuroradiology
|October 10, 2002
Summary
A novel hybrid embolic device, combining platinum coils with expandable hydrogel, offers superior aneurysm cavity filling. This stable hydrogel may reduce aneurysm recanalization rates compared to existing treatments.
Area of Science:
- Biomaterials Science
- Medical Devices
- Vascular Surgery
Background:
- Existing detachable platinum coils are used for aneurysm embolization.
- Aneurysm recanalization remains a clinical challenge with current embolic agents.
Purpose of the Study:
- Introduce and evaluate a new hybrid embolic device for aneurysm treatment.
- Assess the enhanced filling capacity and stability of the novel device.
Main Methods:
- The hybrid device integrates a platinum coil with an expandable hydrogel.
- The hydrogel expands ninefold in volume in a physiological environment.
- Angiographic and histologic findings were analyzed in experimental rabbit aneurysms.
Main Results:
- The hybrid device demonstrated an enhanced ability to fill aneurysm cavities.
- The hydrogel component provided stable, complete cavity occlusion.
- Histologic analysis confirmed device integration and stability.
Conclusions:
- The novel hybrid embolic device offers improved aneurysm sac filling and stability.
- The hydrogel's resistance to thrombolysis suggests a potential reduction in recanalization.
- This technology shows promise for more durable aneurysm treatment.