Drum-shaped graduated skin test needle
A scale and skin test technology, applied in infusion sets, syringes, etc., can solve the problems of children's fear, medical disputes, inaccurate concentration, etc., and achieve the effect of accurate and fast determination and convenient application.
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[0022] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes a puncture needle 1 , which is arranged in a package box 2 , an upper film 3 and a lower film 4 are respectively sealed at both ends of the package box 2 , and a concentric circle device 5 with scales is bonded below the lower film 4 . The tail end of the puncture needle 1 is in the shape of a flat sheet, which is bonded to the upper film 3 and is located in the same plane as the upper film 3 . The center of the lower film 4 is provided with a hole, and the center of the hole, the needle point of the puncture needle 1 and the center of the graduated concentric circle device 5 are located on a straight line. The scaled concentric circle device 5 is made of plastic film with a diameter of 15 mm and is divided into 3 layers with a distance of 5 mm between each layer, and each layer is provided with 5 concentric circles with a distance of 1 mm between each concentric cir...
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