This invention relates to the field of
in vitro diagnostic
testing equipment technology, and discloses a symmetrical multi-arm tumor
antibody test strip device with negative pressure aspiration. The device includes a sealed shell, a press-triggered component, a mechanical limiting mechanism, a concealed
blood collection component, a negative pressure aspiration
system, radial multi-arm detection modules, and a flexible sealing pad. The device employs a concealed
blood collection design, with the needle automatically retracting after
blood collection, eliminating the risk of puncture wounds and
contamination. Combined with a linked negative pressure aspiration structure, it achieves instantaneous automatic aspiration after blood collection, eliminating the need for manual squeezing. The multi-arm detection modules are symmetrically distributed circumferentially, with uniform internal flow channels, enabling synchronous and equal sample distribution and ensuring accurate and parallel test results. The flexible sealing element conforms to the fingertip to form a sealed structure, preventing leakage and improving aspiration efficiency. A multi-level limiting mechanism stabilizes the device body, making it suitable for operation by the elderly, children, and other groups. This device is easy to operate, highly safe, and provides accurate detection. It is suitable for rapid home-based tumor
antibody screening and on-
site testing at grassroots levels, with high intelligent adaptability and easy result interpretation.