IV NEEDLE WITH MANUAL RETRACTION Russian patent published in 2021 - IPC A61M5/158 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to IV needles with manual retraction of the needle. Needle contains the needle holder, the needle tube, the built-in sliding shell and the protective casing, and the needle holder contains a tubular part and a back-abutting part; the rear end of the needle tube is installed inside the tubular part; built-in sliding shell through and hollow with C-shaped cross-section, tubular part is installed inside the built-in sliding shell and can slide back and forth; the protective casing is an oblong, through and hollow casing; an integrated sliding shell is installed inside the protective casing and can slide back and forth. Engaging structure is provided between the needle holder and the protective casing. When the needle holder is disengaged from the protective casing, the needle holder can be pulled back so that the tubular part can move to the engaging position of the built-in sliding shell to engage. Continuing to pull back on the needle holder, the integral sliding sheath is driven by the needle holder to move into the engaging position of the protective casing to engage, with the needle tube being completely covered by the protective casing.

EFFECT: said invention allows avoiding puncture wounds and cross contamination and reduces damage to the inner wall of the patient's blood vessels by the needle tube; and provides the advantage of miniaturization of the product, standard operation and simple manufacturing process.

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