A Magnetically Steerable Guidewire for Neuro-Endovascular Intervention

Background

Neuro-endovascular intervention for acute ischemic stroke caused by large vessel occlusion relies on precise guidewire navigation through narrow, tortuous, and fragile cerebral vessels to perform mechanical thrombectomy (MT). Although MT has become the gold standard for restoring blood flow, navigating to the clot is technically demanding and often limited by the mechanical constraints of conventional guidewires, which require challenging manual manipulation and offer limited steerability. Robotic and magnetic navigation systems have been developed to improve precision, but most depend on large, immobile, and costly electromagnetic platforms that require specialized infrastructure and are often unavailable in underserved regions. These systems also rely heavily on continuous fluoroscopy, contributing to radiation exposure and procedural cost. As stroke remains a leading cause of death and disability worldwide, there is a critical need for accessible, precise, and cost-effective guidewire technologies that can expand timely MT access to more patients and reduce reliance on specialized facilities.

Technology overview

This technology is a magnetically steerable guidewire system designed to improve navigation during neurovascular procedures such as mechanical thrombectomy. The guidewire incorporates a spring core and an axially magnetized, flexible silicone head allowing controlled tip steering with a single external permanent magnet. A robotic actuation system provides controlled insertion, retraction, and rotation while maintaining compatibility with standard catheters. The guidewire combines a stiff proximal shaft for pushability with a soft, flexible distal tip for safe travel through complex vessel paths, and dissolvable 3D-printed molds support scalable, cost-effective manufacturing. The magnetized head enables real-time localization and reduces dependence on continuous fluoroscopy, lowering radiation exposure for both clinicians and patients. By eliminating the need for large magnetic infrastructure, the system provides a compact and affordable solution suitable for diverse clinical environments, including resource-limited settings.

Benefits

• Precise, contactless steering with a single external permanent magnet
• Flexible, biocompatible tip minimizes vessel trauma in tortuous anatomy
• Robotic actuation ensures controlled insertion, rotation, and retraction
• Scalable, low-cost manufacturing using dissolvable molds
• Reduced reliance on continuous fluoroscopy lowers radiation exposure

Applications

• Mechanical thrombectomy
• Neuro-endovascular interventions
• Vascular navigation research
• Remote and resource-limited clinical settings
• Robotic-assisted catheterization

Opportunity

• Addresses unmet need for accessible, precise guidewire navigation systems
• Eliminates dependence on bulky magnetic infrastructure found in current technologies
• Supports widespread adoption across high-volume hospitals and underserved regions
• Available for exclusive licensing

Intellectual Property

US Provisional filed 01/23/2025