Reusable motorized auto-injection device

EP4770709A1Pending Publication Date: 2026-07-08BECTON DICKINSON & CO
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
BECTON DICKINSON & CO
Filing Date
2024-08-30
Publication Date
2026-07-08

AI Technical Summary

Technical Problem

Existing auto-injection devices require complex and bulky structures due to the need for two separate motion mechanisms for needle insertion and medication infusion, leading to increased risk of failure and higher costs.

Method used

A reusable motorized auto-injection device that uses a single motor to perform both needle insertion and medication infusion motions, achieving different speeds through circuit switching, thereby simplifying the structure and reducing costs.

Benefits of technology

The device achieves reliable and efficient needle insertion and medication infusion with improved reliability and reduced costs, while also being more compact and easier to miniaturize.

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Abstract

A reusable motorized auto-injection device includes a housing; a single motor within said housing; a drive shaft configured to move linearly; a sleeve configured to receive a syringe containing a medication; and a circuit switcher, wherein said drive shaft is configured to engage a stopper of said syringe, and wherein said circuit switcher is configured to automatically cause said motor to operate in a first mode and in a second mode successively with the linear movement of said drive shaft, wherein in said first mode, said motor is connected to a first circuit such that said drive shaft is linearly moved at a first, faster speed, thereby realizing rapid insertion of a needle of said syringe, and wherein in said second mode, said motor is connected to a second circuit such that said drive shaft is linearly moved at a second, slower speed, thereby realizing a slow infusion of medication.
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