Injection Pen Code Reader Layout for Dual Rotational Positions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing injection devices require multiple reader antennas or large, circumferentially extending antennas to read machine-readable codes from reservoir units in different rotational positions, leading to increased complexity and cost.
Innovation Solution
A single reader antenna is positioned at an angle of about 90° relative to the tag antenna, allowing data transfer in two different rotational positions of the reservoir unit, reducing complexity and cost by eliminating the need for multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple reader antennas or large circumferentially extending antennas are used to read machine-readable codes from reservoir units in different rotational positions, then data transfer reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent positions the single reader antenna at a specific angular offset (approximately 90 degrees) relative to the tag antenna on the reservoir unit. This angular positioning in the rotational dimension allows the reader antenna to effectively read codes from multiple rotational positions of the reservoir unit, eliminating the need for multiple antennas while maintaining reliable data transfer.
2Adaptability or versatility
If multiple reader antennas are used to cover all rotational positions, then measurement coverage is improved, but device complexity increases
Solution Approach 1:
The single reader antenna is designed to perform multiple functions by reading machine-readable codes from reservoir units at different rotational positions. The antenna's strategic angular positioning enables it to universally cover all possible rotational orientations, making one antenna equivalent in functionality to multiple antennas would provide.
3Device complexity
If a single reader antenna is used, then device complexity is reduced, but data transfer reliability may deteriorate
Solution Approach 1:
The patent optimizes the angular parameter of the reader antenna's position relative to the tag antenna. By setting this angular parameter to approximately 90 degrees, the system achieves reliable data transfer with a single antenna, as this specific parameter value maximizes the reading effectiveness across all rotational positions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This arrangement simplifies the data transfer interface by using a single reader antenna to cover all possible rotational positions, optimizing space usage and reducing potential interferences, while maintaining effective data communication.
Implementation Method 1
a machine-readable code providing information and including a tag antenna; a code reader for reading the code information from the syringe unit, wherein the code reader includes a reader antenna
Data Source
AI summary
An injection device (1) includes a reservoir unit (10) and a drive unit (20) releasably attachable to the reservoir unit. The reservoir unit (10) includes a reservoir (19), a reservoir holder (16) for holding the reservoir (19), a coupling member (17) and a machine-readable tag providing information and including a tag antenna (15). The drive unit (20) includes a drive source for dispensing the liquid drug, a counter coupling member (23) adapted to engage the coupling member (17) to attach the drive unit (20) to the reservoir unit (10) in a predefined rotational position and a code reader for reading the tag information and including a reader antenna (25). In an attached state, a center of the tag antenna (15) and a center of the reader antenna (25) are arranged to each other at an angle between 60° to 120° around the longitudinal axis.