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Stability of coil emboli: an in vitro study
P A Nancarrow1, K E Fellows, J E Lock
1Department of Radiology, Children's Hospital, Boston, Massachusetts.
Cardiovascular and Interventional Radiology
|January 1, 1987
Summary
Gianturco stainless steel coils require appropriate sizing for optimal performance. Improperly sized coils may migrate or fail to fully reform, impacting their effectiveness in procedures.
Area of Science:
- Biomaterials Science
- Medical Device Engineering
- Vascular Interventions
Background:
- Gianturco stainless steel coils are widely used for embolization in vascular procedures.
- Accurate coil sizing is crucial for achieving desired occlusive effects and preventing complications.
Purpose of the Study:
- To evaluate the behavior of Gianturco coils in vitro.
- To determine the impact of coil size on positional stability and reformation within different vessel diameters.
Main Methods:
- Gianturco coils were placed in clear plastic tubes simulating various vessel sizes.
- Pulsatile flow was applied to assess coil migration and reformation.
- Positional stability and extent of coil reformation were quantitatively evaluated.
Main Results:
- Coils that were too small for the tube migrated distally or proximally.
- Oversized coils exhibited incomplete reformation, reducing their cross-sectional area.
- Optimal coil performance was dependent on matching coil size to vessel diameter.
Conclusions:
- Coil sizing is a critical factor for successful embolization.
- In vitro testing provides valuable insights into coil behavior and performance limitations.
- Precise coil selection can enhance occlusive potential and minimize migration risks.