The present invention is used in combination with the automatic insulin injector and in the syringe unit consisting of a type needle, a delivery tube and a connector installed on the pressing piece in contact with the patient's skin,;The needle includes a horizontal connecting rib connected to the feed pipe,;An injection needle projecting perpendicularly to the pressing piece,;A curved portion that is curved at a predetermined height above the horizontal line at the top of the needle portion,;An inclined portion inclined downward from the end of the curved portion to the horizontal portion;;The curved portion starts at the upper end of the needle, the curved portion is a syringe unit for an automatic insulin syringe, characterized in that configured to form a quarter of the circumference of the same radius centered on the horizontal line of the upper end of the needle,;Prevents cutting of the needle by preventing the cutting of the needle by improving the impact resistance by placing the curved portion extending at the top and the upper end of the needle, and the protective cap tube is fitted to the pressing piece to easily secure the protective cap tube, and the protective cap tube Since the inner diameter of is to be larger than the needle constantly, it is possible to prevent the leakage of the injection solution by capillary phenomenon when the injection solution initially flows.
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