Dropper for skin prick experiments

Abstract

The invention relates to a special drip tube for a skin prick test. The special drip tube comprises a suction tube and a suction bag; a shell comprises a cover body and a body, wherein a cover body through hole is formed in the cover body, and a body through hole is formed in the body; the suction bag is arranged in the shell, and the suction tube protrudes from the body through hole; a pressing plate and a pressing column are arranged in the cover body, one end of the pressing column is connected with the pressing plate, the other end of the pressing column protrudes from the cover body through hole, a pressing spring is sheathed on the pressing column, one end of the pressing spring is connected with the inner wall of the cover body, and the other end of the pressing spring is connected with the pressing plate; a plurality of annular positioning grooves which are arranged from top to bottom are formed in the inner wall of the shell; a side mounting hole is formed in the side of the pressing plate, a positioning column and a positioning spring are arranged in the side mounting hole, one end of the positioning spring is abutted with the positioning column, and the other end of the positioning spring is abutted in the side mounting hole; a vertical positioning groove which enables the positioning column to pass through to move upward and penetrates through the annular positioning grooves is formed in the inner wall of the shell. The special drip tube has the characteristics of accuracy in controlling dripped original liquor and high detection efficiency.

Description

technical field [0001] The invention relates to a dropper, in particular to a dropper specially used for skin pricking experiments. Background technique [0002] The existing human skin allergy test mainly obtains the required data through the skin prick test. At present, the clinical skin prick test mainly uses the skin prick allergen liquid test-disinfecting the patient's bilateral forearms, on the inner side of the forearm A drop of about 20 kinds of allergen drug solution was dripped every 3-5cm, and a positive control of histamine and a negative control of normal saline were added. In the center of the drug solution, a disposable needle was used to puncture the skin vertically to the subcutaneous area, and observed for 20 minutes. The amine group was compared with the saline group, and the location and size of the wheal were recorded. However, for the medical staff, in the process of dripping the original medicinal liquid, there are often too many original medicinal li...

AI Technical Summary

Problems solved by technology

However, for the medical staff, in the process of dripping the original medicinal liquid, there are often too many original medicinal liquids, and the medical staff will suck the original medicinal liquid back into the dropper, causing the head of the dropper to touch the patient's skin, and then give the patient When used by one patient, it is easy to cause cross-infection and there are potential safety hazards

Due to the high manufacturing cost of the original drug solution in the experiment, in order to save the original drug solution, the testing medical staff cannot let go during the operation, and it is difficult to drip an appropriate amount of the original drug solution, which makes the entire detection time too long

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