Guidewire

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes an MRI-safe guidewire for use in medical procedures, especially in MRI environments. The guidewire uses one or more shape memory alloy (SMA) cores that can change shape (bend) when heated, with the heating controlled by integrating LC (inductor-capacitor) circuits designed to be powered through the MRI's electromagnetic fields. This allows precise remote steering and control of the guidewire during procedures while ensuring MRI compatibility and patient safety.

Use CasesContent extracted from patent full text and abstract with AI.

• Navigating vascular systems in minimally invasive procedures under MRI guidance, especially in neurology (e.g., treatment of brain aneurysms).
• Delivery of therapy devices to targeted lesions in the brain, heart, or peripheral vessels while using MRI imaging.
• Diagnosis and treatment of cardiac problems such as coronary artery disease or heart valve interventions where MRI rather than X-ray guidance is desired.
• Renal artery interventions or repairs in patients for whom MRI is the preferred imaging modality.
• Bronchial interventions, leveraging MRI imaging for navigation.

BenefitsContent extracted from patent full text and abstract with AI.

• MRI safety: Unlike traditional guidewires, this design is safe for use in MRI, avoiding the risk of heating or patient injury from electromagnetic currents.
• Enhanced steerability: The use of shape memory alloys and controlled heating (via LC circuits) provides superior maneuverability, allowing precise navigation even through tortuous blood vessels.
• Remote control: Shape change (bending) can be induced remotely without mechanical manipulation, reducing procedure complexity and improving safety.
• Imaging compatibility: The guidewire can be detected by X-ray, CT, and MRI, supporting flexibility in imaging techniques.
• Reduced procedure risks: Minimizes complications associated with non-MRI-safe metal guidewires, such as kinking, deformity, and tissue damage.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The present invention relates to MRI-safe guidewires and to guidewires with multiple elongated shape memory alloy cores 1,2.