Skin pricking device and special drug bottle

Abstract

A skin pricking device comprises a needle, a needle holder, an inclined-face push rod, a piston and a shell. A transverse hole and a longitudinal hole are formed in the shell and are communicated mutually, a certain angle is formed between the transverse hole and the longitudinal hole, the needle holder is arranged in the longitudinal hole, the inclined-face push rod is arranged in the transverse hole, and an inclined face is arranged at the tail end of the needle holder; a dovetail groove formed in the inclined face is matched a protrusion of the inclined-face push rod to enable the protrusion to be only capable of sliding in the dovetail groove, and the needle holder can move in the longitudinal hole through movement of the inclined-face push rod in the transverse hole; the tail of the inclined-face push rod extends out of the shell and is provided with a push plate, and a thick spring arranged between the push plate and the shell can be compressed by pushing the push plate and can rebound automatically by releasing the push plate; the needle is mounted at the head of the needle holder and can extend out of or retract from the shell through movement of the needle holder; the elastic piston arranged in a gap between the needle holder and the shell can guarantee airtightness between the needle holder and the shell to enable the needle holder to suck or exhaust air during movement.

Description

technical field [0001] The invention relates to the field of skin allergy testing, in particular to a skin pricking device and a special medicine bottle. Background technique [0002] The existing human skin allergy test mainly obtains the required data through the skin prick test. At present, the skin prick allergen is mainly used in clinical practice-disinfect the patient's bilateral forearms, and drop it on the inside of the forearm every 3-5cm. One drop of allergen drug solution (about 20 kinds), and dripped with histamine positive control and normal saline negative control, puncture the skin vertically with a disposable needle in the center of the drug solution to subcutaneous, observe for 20 minutes, and compare with histamine group and saline group Compare and record the location and size of the wheal. However, for operators, especially beginners, the depth of needle penetration is often uncertain, and the penetration is too shallow to pierce the skin, which may lead...

AI Technical Summary

Problems solved by technology

However, for operators, especially beginners, the depth of needle penetration is often uncertain, and the penetration is too shallow to pierce the skin, which may lead to false negative results

If the penetration is too deep, the pain will be strong, and the penetration into the dermis will cause bleeding, which will affect the test results, so that the operator cannot let go during the operation, and the detection efficiency will be too slow

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