Convection-Enhanced Delivery: Infusing Precision into Neurosurgery
In this episode of MedDevice by Design, we explore how convection-enhanced delivery (CED) is transforming brain-targeted drug therapies. Ariana Wilson and Mark Drlik explain how this specialized method delivers therapeutic agents directly into brain tissue using precision-guided devices for safe and accurate infusion.
What Is Convection-Enhanced Delivery?
Convection-enhanced delivery is a neurosurgical technique that infuses medication directly into the brain. Unlike passive diffusion, CED uses pressure gradients to push molecules more uniformly and deeply into brain tissue. This approach enables better distribution of therapeutic agents to target areas.
Cannula Design
CED requires a rigid yet precise neurosurgical cannula. Surgeons place the cannula using a neuro-navigation system and preoperative imaging, which help chart the safest path into the brain. With over 600 kilometers of vasculature—equivalent to stacking 2,000 Eiffel Towers—avoiding blood vessels is critical.
Once placed, some cannulas become flexible to support long-term infusion and reduce infection risk by routing the tubing away from the wound site.
Navigating the Brain with Surgical Precision
Placing a cannula into the brain is a complex process. Neurosurgeons depend on real-time imaging and navigation tools to avoid sensitive areas. This level of surgical precision is what makes CED so promising for targeted brain therapies.
Enjoying MedDevice by Design? Sign up to get new episodes sent to your inbox.
Related Resources
Accelerated aging in medical devices is a testing method used to estimate how a product will perform over time by exposing it to elevated conditions, most often heat. In simple terms, it is a way to simulate months or years of aging in a much shorter timeframe.
In a recent article for MD+DI, StarFish Medical Software Manager Sean Daniel explores how remote medical devices reliability is becoming a defining challenge as devices move beyond traditional clinical environments into homes, workplaces, and public settings.
This medical vs wellness example shows how device classification can directly change functionality. Even when hardware is similar, what the device is allowed to do can be very different.
Modern medical devices are no longer confined to hospital settings. Wearable cardiac monitors, home respiratory systems, and remote patient monitoring devices now operate within broader digital health networks.