This invention discloses a magnetic
embolism protection device and
system, belonging to the field of
medical device technology. It includes a
catheter and an umbrella-shaped filter
assembly disposed on the distal outer wall of the
catheter. A permanent
magnet is disposed within the
catheter to cooperate in opening and closing the filter
assembly. The catheter has a first cavity, a second cavity, and a guidewire cavity along its length. The first cavity is located near the inner wall of the catheter, while the second and guidewire cavities are located side-by-side within the catheter. The distal ends of the first and second cavities are interconnected through a connecting hole. The permanent
magnet is placed in the middle of the first cavity, and a first hole is located at the proximal end of the catheter, communicating with the first cavity. By pressurizing the first cavity, the permanent
magnet is displaced, further causing the unfolding and opening rods to expand and contract magnetically. The size of the umbrella opening can be controlled to adapt to blood vessels of different inner diameters. It is highly adaptable, structurally stable, and easy to control, effectively intercepting free thrombi, reducing the probability of thromboembolism, and improving the success rate of
surgery.