Pharmaceutical Injection Device Needle Removal Reminder
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Solution Overview
Problem
Conventional pharmaceutical injection devices do not provide a reminder to remove the injection needle after use, leading to the potential reuse of used needles in subsequent injections.
Innovation Solution
A pharmaceutical injection device with a controller that displays a message prompting the user to remove the injection needle when the device is powered off, utilizing a needle detector to detect the needle's mounting state and trigger the reminder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a needle detector switch is provided to detect the mounting of an injection needle, then the user will not forget to mount the injection needle, but there is no reminder about removing the injection needle after use
Solution Approach 1:
The controller provides feedback to the user through the display component at two critical stages: first, confirming that the needle is properly mounted before injection, and second, reminding the user to remove the needle after injection is complete. This closed-loop feedback system ensures both mounting and removal actions are acknowledged, preventing needle reuse.
Solution Approach 2:
The system performs preliminary detection and confirmation actions before the injection process begins. The needle detector switch verifies needle mounting in advance, and the controller displays confirmation messages before power-off, ensuring the user is reminded to remove the needle before leaving the device.
2Reliability
If the device only detects needle mounting but not removal, then the injection process can start safely, but the used needle may be reused in subsequent injections
Solution Approach 1:
The system implements a two-stage feedback mechanism: pre-injection feedback confirms needle mounting status, and post-injection feedback reminds the user to remove the needle. This dual feedback approach addresses both injection safety and prevents harmful needle reuse by providing continuous status awareness to the user.
Solution Approach 2:
The display component acts as an intermediary between the needle detector switch and the user. It translates the detector's signals into clear visual messages that guide the user through proper needle mounting and removal, bridging the gap between detection capability and user awareness.
3Ease of operation
If a reminder system is added to prompt needle removal, then proper use is encouraged, but the device complexity increases
Solution Approach 1:
The controller is designed to perform multiple functions: it controls the injection process, manages power switching, detects needle mounting status, and provides user reminders through the display. By making the controller multi-functional, the patent avoids adding separate dedicated components for each function, thereby limiting the increase in device complexity while achieving comprehensive needle management.
Solution Approach 2:
The patent combines the needle detection function, control logic, and user interface into an integrated system. The needle detector switch is electrically connected to the controller, which in turn connects to the display component, creating a merged system that manages the entire needle lifecycle from mounting detection to removal reminder without requiring separate standalone components.
Data Source
AI summary
The present invention relates to a pharmaceutical injection device, and it is an object thereof to prompt the user to replace the injection needle as needed. To achieve this object, the present invention is configured such that a needle detector switch 8 that directly or indirectly detects the mounting of an injection needle to a pharmaceutical syringe 5 is provided to a main case 2, this needle detector switch 8 is connected to a controller 21, and the controller 21 displays on a display component 19 an injection needle removal message that directly or indirectly prompts the user to remove an injection needle 6 from the pharmaceutical syringe 5 when the mounting of the injection needle 6 to the pharmaceutical syringe 5 has been detected by the needle detector switch 8 in the switching off the a power switch 16.