Automatic injection pen and automatic injection locking structure thereof
By employing a locking and linkage structure, the problem of malfunction caused by breakage at the connection point of the automatic injection pen is solved, achieving needle concealment and operational stability and safety, and simplifying the injection process.
WO2026143479A1PCT designated stage Publication Date: 2026-07-09ZHEJIANG SUMMED MEDTECH CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ZHEJIANG SUMMED MEDTECH CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing automated injection pens may malfunction when the connector breaks, affecting the stability and reliability of the device, and there is a high risk of needle exposure.
Method used
Employing a locking and linkage structure, by extending the engagement between the pen barrel and the locking ring, and utilizing a drive spring to provide power, the needle tip is concealed and the actuator sleeve moves precisely, preventing unintended movement.
Benefits of technology
It improves the stability and safety of the device, simplifies the operation process, and enhances the safety and reliability during use.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2024144478_09072026_PF_FP_ABST
Abstract
An automatic injection pen and an automatic injection locking structure thereof. The automatic injection pen mainly involves the automatic injection locking structure achieving precise control of an actuation sleeve rod by means of the cooperative operation of an extension pen rod, the actuation sleeve rod, a drive spring, a locking ring, a locking structure, and a first linkage structure. Specifically, when the extension pen rod is actuated, a top end inclined surface is in contact with a protruding inclined surface on the locking ring to push the locking ring to rotate, thereby releasing locking of the actuation sleeve rod, and the driving spring pushes the actuation sleeve rod to move to a drug delivery position. Compared with the existing technology, the present invention avoids the problem of the injection pen working while in a non-working state by means of a precise locking structure, improves the stability and reliability of the apparatus, and increases the convenience and safety of operation.
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