A ruler for measuring local reactions from a vaccine clinical trial inoculation

By designing a transparent and flexible vaccine local reaction measurement ruler, the accuracy and hygiene issues of measuring local reactions after vaccination have been solved, enabling rapid and accurate reaction assessment and grading, and reducing measurement errors and infection risks.

CN224403642UActive Publication Date: 2026-06-26Hunan Provincial Center for Disease Control and Prevention (Hunan Provincial Public Health Testing and Inspection Center Hunan Provincial Academy of Preventive Medicine Sciences)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Hunan Provincial Center for Disease Control and Prevention (Hunan Provincial Public Health Testing and Inspection Center Hunan Provincial Academy of Preventive Medicine Sciences)
Filing Date
2025-04-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing technologies, the measurement of local reactions after vaccination is characterized by low accuracy, low efficiency, inconvenience, and health risks. Furthermore, the classification of adverse reactions is difficult, making rapid and accurate assessment impossible.

Method used

A simple measuring ruler has been designed, consisting of a transparent, flexible circular disc and connecting strips, equipped with millimeter-level scales and color contrast rings. It is suitable for self-measurement by physicians and subjects in clinical trial research. It also features a peel-off sterile film for easy skin contact, measurement, and photographic documentation.

Benefits of technology

It enables rapid and accurate measurement of the extent and level of local reactions, reduces measurement errors, minimizes the risk of skin infection, is suitable for measuring irregular shapes, and supports intuitive grading assessment and record saving.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to medical instrument technical field especially, and more particularly to a kind of measuring scale of vaccine clinical test inoculation local reaction.The technical scheme, including measuring scale main part, is provided with graduated scale for vaccine inoculation site reaction on the measuring scale main part;The measuring scale main part includes the first circular disc, second circular disc, third circular disc and fourth circular disc of increasing diameter in turn;The first circular disc, second circular disc, third circular disc and fourth circular disc and connecting strip are all transparent flexible material.The utility model can quickly and accurately measure the maximum diameter of irregular shape, reduce measurement error, can be visually fast and carry out the grading evaluation of local reaction, use disposable film, reduce the risk of skin infection.
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