FIELD: manufacturing technology.SUBSTANCE: present invention relates to a filtering unit of an injection needle for a syringe, and more specifically, to a device for further facilitating the sampling of injection fluid when using a cap on the syringe equipped with a filter for filtering foreign substances. Filtering unit of the injection needle includes injection needle (100), which comprises needle (110) and sleeve (120) to support needle (110) and is configured to be attached to the syringe； as well as cap (200), configured to accommodate needle (110) and to be hermetically attached to the outer circumference of sleeve (120), and including filter (210), wherein through hole (121) is formed in sleeve (200) for communication between the inside and outside of the sleeve, and the opening/closing of through hole (121) is controlled by one-way valve means (300). Filtering unit of the injection needle blocks foreign substances injected into the syringe, as well as substances adhering to the injection needle, so that filtering unit of the injection needle can prevent the injection of ampoule fragments together with the injection fluid into a human body, thereby increasing the safety level, and in which the filtering unit pf the injection needle has a variety of types of one-way valve means provided in the sleeve of the injection needle to further facilitate the sampling of injection fluid.EFFECT: user-friendliness is increased and, thus, the commercial value and market competitiveness of the product is maximized.11 cl, 13 dwgНастоящее изобретение относится к фильтрующему узлу инъекционной иглы для шприца, и более конкретно, к устройству для дополнительного облегчения забора инъекционной жидкости при использовании крышки на шприце, снабженной фильтром для фильтрования чужеродных веществ. Фильтрующий узел инъекционной иглы включает в себя инъекционную иглу (100), которая содержит иглу (110) и втулку (120) для поддержки иглы (110) и выполнена с возможностью присоединения к ш
