Infertility affects an estimated 186 million people worldwide, with fallopian tube obstruction contributing to 11%-67% of female infertility cases. Researchers have developed an innovative solution using a magnetically driven robotic microscrew to treat fallopian tube blockages.
The microrobot is made from nonmagnetic photosensitive resin, coated with a thin iron layer to give it magnetic properties. By applying an external magnetic field, the robot rotates, generating translational motion that enables it to navigate through a glass channel simulating a fallopian tube.
"This new technology offers a potentially less invasive alternative to the traditional surgical methods currently used to clear tubal obstructions, which often involve the use of conventional catheters and guidewires," said author Haifeng Xu. The design of the microrobot is another key innovation. It has a screw-shaped body with a helical structure, a cylindrical central tube, and a disk-shaped tail. The helix-shaped structure is crucial for propulsion, while the disk-shaped tail helps stabilize the robot's motion. As the screw rotates, it generates a vortex field that helps push fragmented debris toward the tail, clearing the blockage more effectively.
Looking to the future, the research team plans to make the microrobot smaller and more advanced. They also aim to test the robot in isolated organ models and incorporate in vivo imaging systems to track the microrobot's movement and position in real time. The team also envisions expanding the robot's applications in surgery, including automatic control systems that could enhance the efficiency of blockage removal and other medical procedures.
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