Guidewire microrobot and manufacturing method thereof

Guidewire Microrobot

This technology features a guidewire microrobot structure that is driven and steered by an external magnetic field. It is sealed by welding or soldering both ends of a hollow tube to a metal body, a core wire, and an external coil, with magnetic materials and flexible substances hermetically enclosed inside.

Conventional magnetic guidewires pose clinical safety risks, such as the potential leakage of internal magnetic particles into the body if the flexible polymer is damaged, or the wire breaking or detaching during procedures due to structural weaknesses.

This technology inserts a metal body into one end of the tube and a core wire into the other, wraps the outer surface with a coil, and then uses welding or soldering to physically seal both ends. This prevents the leakage of magnetic materials and flexible substances while enhancing structural integrity. Applicable to industrial robots and automated systems, the interference fit between the metal components and the coil seals one end of the tube, thereby improving clinical safety and preventing detachment.

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Key Features:

• The length of the section within the tube containing the flexible substance is longer than the section containing the magnetic material, with the core wire inserted into the other end of the tube.
• A guidewire microrobot characterized in that the portion of the core wire inserted into the tube is positioned within the flexible substance and is spaced apart from the magnetic material.
• The metal body and coil are fixedly coupled to seal one end of the tube, with the flexible substance housed inside the tube.
• A magnetic material disposed between the metal body and the flexible substance.

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This invention was developed with support from the Ministry of Health and Welfare for the development of a microrobotic guidewire system for peripheral vascular intervention.