Reusable motorized auto-injection device
EP4770707A1Pending Publication Date: 2026-07-08BECTON DICKINSON & CO
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Patent Information
- Application Number
- EP2024769507
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-08-31
- Filing Date
- 2024-08-23
- Publication Date
- 2026-07-08
AI Technical Summary
Technical Problem
Existing auto-injection devices require complex and bulky structures due to the need for 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 and a dual pitch motion conversion mechanism to achieve both needle insertion and medication infusion, simplifying the structure and reducing costs.
Benefits of technology
The device achieves rapid needle insertion and slow medication infusion with improved reliability and reduced costs, while also being easier to miniaturize and manufacture.
✦ Generated by Eureka AI based on patent content.
Abstract
A reusable motorized auto-injection device comprises: a single motor; a motion conversion mechanism; a drive shaft configured to be driven by said motion conversion mechanism to move linearly; and a loading sleeve configured to receive a syringe containing a medication; wherein the motion conversion mechanism comprises an outer sleeve and an inner shaft disposed within the outer sleeve, wherein a thread is provided on one of the outer wall of the inner shaft and the inner wall of the outer sleeve, and an engagement element is provided on the other, and wherein the thread includes a first section and a second section having a continuous thread groove, the first section and the second section having different pitches, the engagement element being configured to be able to engage successively with respective thread groove of the first section and the second section in such a way that, when engaging with the thread groove of the first section, the drive shaft is moved linearly at a first, faster speed to realize rapid insertion of the needle of the syringe, and when engaging with the thread groove of the second section, the drive shaft moves linearly at a second, slower speed to realize a slow infusion of the medication of the syringe.
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