Magnetic Dose Measuring Device for Injection Pen

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Solution Overview

Problem

Users of electronic dose measuring devices for injection pen systems often experience issues with accidental registration of events due to relative movement during mounting and dismounting, leading to potential errors in injection monitoring.

Innovation Solution

A removably attachable electronic dose measuring device with a temporary positioning mechanism using a magnetizable element, which maintains a fixed spatial and rotational relationship between the cylindrical body and the electronic dose measuring body during attachment and removal, preventing erroneous event registration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the electronic dose measuring body is made freely movable during mounting and dismounting, then the ease of operation is improved, but the reliability of event registration deteriorates due to accidental movement registration

Engineering Contradiction:

Improveease of mounting and dismountingVSAvoidaccuracy of event registration

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The device transitions from a static fixed relationship to a dynamic temporarily fixed relationship during mounting/dismounting, then returns to fixed during operation. The magnetizable element allows the system to be temporarily movable when needed (mounting/dismounting) while maintaining reliability during actual use through the fixed spatial relationship.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The magnetic field strength parameter changes based on proximity - when the magnetizable element is close to the magnetic field producing element during mounting/dismounting, it creates sufficient magnetic attraction to temporarily fix the relationship and prevent accidental movement registration.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If a permanent fixed spatial relationship is maintained between the cylindrical body and electronic dose measuring body, then the reliability of event registration is improved, but the ease of operation deteriorates during mounting and dismounting

Engineering Contradiction:

Improveaccuracy of event registrationVSAvoidease of mounting and dismounting

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system dynamically adjusts its fixedness - temporarily fixed during mounting/dismounting operations when the magnetizable element is positioned near the magnetic field producing element, and permanently fixed during normal operation. This resolves the contradiction by making the system adaptable to different operational states.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The magnetizable element acts as an intermediary between the cylindrical body and the electronic dose measuring body, creating a temporary magnetic bond during mounting and dismounting that enables reliable event registration while still allowing for easy attachment and removal operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the magnetizable element is positioned close to the magnetic field producing element, then the temporary positioning effectiveness is improved, but the device complexity increases

Engineering Contradiction:

Improveeffectiveness of temporary positioningVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The magnetizable element is merged with the electronic dose measuring body, and the magnetic field producing element is integrated into the cylindrical body. This combination approach reduces overall device complexity while maintaining effective temporary positioning through the magnetic interaction between these integrated components.

Inventive Principle:

Principle #5Merging (Combining)

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

The solution effectively reduces the likelihood of erroneous event registration during device manipulation, ensuring accurate monitoring and measurement of injection processes.

Implementation Method 1

a magnetizable element, which is magnetized by the at least one magnetic field producing element

Methodology Applied

Scientific EffectMagnetism: Magnetism

Implementation Method 2

at least one magnetic field producing element located at, or adjacent, a proximal end of the distal cylindrical body

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentUS20250186698A1Removably attachable electronic dose measuring device for an injection pen system

Publication Date: 2025.06.12 BIOCORP PRODUCTION SA

AI summary

Removably attachable dose measuring device for attachment to a proximal end of an injector pen, comprising: a distal body having a bore and a central longitudinal axis, and adapted for co-axially mounting, and rotationally engaging with, a proximal dose selector wheel of the injector, and comprising at least one magnetic field producing element near a proximal end of the distal body; a proximal dose measuring body, comprising electronic dose measuring circuitry, and mounted within the bore of the distal body, the former being selectively movable axially along, and free to rotate around, the longitudinal axis; wherein the proximal body comprises a temporary positioning means having a magnetizable element, configured to temporarily maintain a fixed spatial, axial and rotational relationship between the distal body and the proximal body along and around the longitudinal axis during attachment and removal of the dose measuring device to, and from, the injector.