Microrobots for drug delivery

Microrobot for Drug Delivery

This technology features a mechanical system where a microrobot connected to a base rod uses an external magnetic field to move an internal magnetic linear actuator longitudinally to pressurize and release drugs, or deforms a magnetic absorption member to release the drug.

Conventional balloon catheters are difficult to use in micro-vessels due to the need for radial expansion space, and standalone microrobots are difficult to retrieve after drug release due to blood flow.

This technology utilizes a microrobot fixed to a base rod (catheter/guidewire). It releases drugs by pressurizing them via a magnetically driven linear actuator or by deforming a magnetic absorption member, while the base rod allows for precise positioning and retrieval of the robot. Applicable to surgical robots, interventional systems, and medical automation, it improves drug delivery to small blood vessels and enhances the safety of drug administration.

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Key Features:

• The drug reservoir is a linear actuator that moves along the longitudinal axis of the base rod in response to an external magnetic field.
• In a microrobot mounted on a base rod, a connection part is used to secure the robot to the base rod.
• A connection part that secures the robot to the base rod.
• A microrobot where the drug is pressurized and released by a longitudinally moving linear actuator.

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This invention was developed with support from the Ministry of Trade, Industry and Energy for the development of a micro-medical robot system for the treatment of chronic total occlusion in myocardial infarction.