In Vitro Assessment of Ventricular Catheters with a Multilayered Fibrous Web to Prevent Cellular Occlusion
Seunghyun Lee1, Amirhossein Shahriari1, Gio Jison1
1CHOC Children's Research Institute, Orange, California 92868, United States.
ACS Biomaterials Science & Engineering
|January 30, 2026
Summary
New shunt catheter coatings significantly reduce cell attachment, a common cause of cerebrospinal fluid (CSF) shunt failure. This innovation aims to improve shunt longevity and reduce complications in hydrocephalus management.
Area of Science:
- Biomaterials Engineering
- Neurosurgery
- Medical Device Development
Background:
- Hydrocephalus management often requires cerebrospinal fluid (CSF) shunts, but ~40% fail within two years due to catheter occlusion.
- Cellular attachment and debris are primary causes of shunt occlusion, with existing coatings showing limited clinical success.
- Improving shunt longevity is critical for reducing patient morbidity and healthcare costs associated with shunt revision surgeries.
Purpose of the Study:
- To develop and evaluate a novel multilayered fibrous web coating for ventricular shunt catheters.
- To mitigate cellular attachment and reduce occlusion, thereby enhancing shunt system reliability and lifespan.
- To investigate the efficacy of electrospun polyurethane coatings in preventing astrocyte and choroid plexus epithelium adhesion.
Main Methods:
- Commercial silicone catheters were coated using an electrospinning technique to create a multilayered fibrous web.
- Medical-grade polyurethane was used as the coating material.
- In vitro evaluation of cellular adhesion using human astrocytes and choroid plexus epithelium (ChPE), with cell quantification via DAPI staining and ImageJ analysis.
Main Results:
- Web-spun coated catheters demonstrated a significant reduction in cellular adhesion compared to uncoated controls.
- Normalized astrocyte densities decreased from 37.10 ± 18.44 to 24.39 ± 16.68 cells/mm² (p = 0.0329).
- The fibrous web structure effectively minimized cell attachment, suggesting improved biocompatibility.
Conclusions:
- Electrospun fibrous web coatings show significant promise for reducing cellular occlusion in CSF shunt catheters.
- This novel coating strategy has the potential to enhance the reliability and extend the functional lifespan of shunt systems.
- Further development could lead to improved outcomes for patients requiring hydrocephalus management.
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