A device for displaying the injected dose of an injection pen

By using a threaded connection and limiting structure between the graduated cylinder and the sliding window, the problem of inaccurate dosage adjustment and display of the injection pen is solved, achieving precise dosage display and improving the reliability and therapeutic effect of the injection pen.

CN224441836UActive Publication Date: 2026-07-03WUXI NEST BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI NEST BIOTECHNOLOGY CO LTD
Filing Date
2025-05-27
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing injection pens have complex structures for adjusting and displaying injection dosage, are prone to wear and tear, leading to inaccurate display and affecting treatment efficacy.

Method used

The graduated cylinder and the sliding window are connected by threads, combined with a limiting structure, to ensure precise positional displacement of the graduated cylinder and the sliding window. The sliding window covers irrelevant numbers, thus achieving accurate dosage display.

Benefits of technology

Its simple structure reduces wear and tear, ensuring accurate display of the dosage to be injected even after prolonged use, thus improving treatment effectiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a device for displaying the injection dosage of an injection pen, comprising: a housing with an outer cover window; a scale cylinder disposed within the housing, the outer wall of the scale cylinder having a plurality of graduations; and a sliding window disposed between the scale cylinder and the housing, the sliding window having a plurality of wandering windows corresponding to the outer cover window; the scale cylinder rotates or slides relative to the housing so that the graduations of the scale cylinder are displayed via the wandering windows and the outer cover window. The purpose of this utility model is to provide a device capable of accurately displaying the dosage to be injected by the injection pen.
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