Automatic Injection Device Window and Carrier Alignment
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Solution Overview
Problem
Existing automatic injection devices lack features for inspecting contents before use and indicating injection completion, particularly for varying dose volumes, limiting their applicability.
Innovation Solution
An automatic injection device with a housing featuring an elongated window for content viewing, a syringe carrier that displaces the syringe between positions to align with the window for viewing the contents or a visual indicator, and a cap system to prevent obstruction, allowing users to visualize the liquid agent and confirm injection completion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a syringe is used for injection, then the liquid can be delivered to the patient, but the liquid may be discharged from the needle before actual injection
Solution Approach 1:
The needle is exposed from the protective housing before the piston is actuated to eject liquid. This preliminary exposure ensures the needle is ready for immediate use while preventing premature discharge by controlling the sequence of operations through the device mechanism.
Solution Approach 2:
The device provides visual feedback through a window that allows viewing of the syringe contents and injection progress. This feedback mechanism helps users monitor the injection process and understand when the needle is exposed and when liquid ejection occurs.
2Adaptability or versatility
If automatic injection devices are used, then injection can be administered without trained personnel, but features for inspecting contents and indicating completion are limited to larger volume doses
Solution Approach 1:
The protective housing serves multiple functions: it protects the needle, allows content inspection through a window, indicates injection completion via visual changes, and works with syringes of various volumes. This multi-functionality makes the device universally applicable across different dose volumes while maintaining ease of operation.
Solution Approach 2:
The housing or syringe carrier changes color or visual appearance to indicate injection completion. This visual feedback mechanism provides clear indication to users when the injection is finished, improving ease of operation across all dose volumes.
Data Source
AI summary
Automatic injection device includes a housing, a syringe, a plunger, and a syringe carrier. The housing includes a barrel between a first end and a second end. The barrel includes an elongated window to allow viewing of contents inside the housing. The syringe is disposed within the housing and has a reservoir. The plunger is at least partially disposed within the syringe and includes a visual indicator. The syringe carrier is disposed within the housing and configured to contain the syringe and displace the syringe within the housing between a first position and a second position. The syringe carrier can be substantially transparent. The syringe carrier can have first and second legs and an extension disposed therebetween, and at least a portion of the extension can be configured to align with the window and the reservoir when the syringe carrier is in the first position.