Magnetic Hold Assistance for Medicament Needle-Cover Stability
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Solution Overview
Problem
Holding a medicament delivery device in a steady position during injection can be difficult, leading to pain, discomfort, wet injection sites, early device removal, and partial medicament delivery due to the need to counteract the biasing force of the needle cover.
Innovation Solution
A hold assistance device with magnetic attraction components that couple to the medicament delivery device and needle cover, reducing the required hold force by generating a magnetic attraction force to maintain the needle cover in the retracted position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user manually holds the medicament delivery device during injection, then the device can be kept in position, but the user experiences difficulty maintaining steady holding due to biasing force from the needle cover
Solution Approach 1:
The patent replaces the manual mechanical holding system with a magnetic field-based holding system. Magnets are integrated into the device structure to generate magnetic attraction forces that counteract the biasing force of the needle cover, eliminating the need for users to manually counteract mechanical forces during the injection process.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary force between the device structure and the needle cover. The magnets create an intermediate magnetic attraction force that mediates the interaction between the user's manual holding and the needle cover's biasing force, making the holding process easier and more stable.
2Reliability
If the needle cover is allowed to move freely under biasing force, then the device structure remains simple, but the injection site becomes wet and medicament delivery may be incomplete
Solution Approach 1:
The patent merges the holding function with the device structure by integrating magnets directly into the housing or needle cover assembly. This combination ensures that the magnetic holding force is always present when needed, preventing needle cover movement that would cause wet injection sites or incomplete medicament delivery, without requiring separate complex control mechanisms.
3Ease of operation
If magnetic attraction components are added to reduce hold force, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The patent applies magnetic components only in specific locations where they are most effective - within the housing structure or integrated into the needle cover assembly. This localized application provides the necessary magnetic holding force to counteract the biasing force during injection, improving ease of operation while minimizing the overall complexity increase by avoiding unnecessary magnetic components throughout the entire device.
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 magnetic attraction force helps stabilize the needle cover, reducing the user's hold force needed, thereby minimizing discomfort and ensuring complete medicament delivery.
Implementation Method 1
at least one of the first attraction component and the second attraction component is a magnet, and the other of the first attraction component and the second attraction component is a magnet or a ferromagnetic material; and wherein movement of the second support towards the hold position moves the second attraction component towards the first attraction component, increasing magnetic attraction between the first attraction component and the second attraction component to generate a magnetic attraction force
Data Source
AI summary
A hold assistance device for use with a medicament delivery device is described. The hold assistance device includes: a first support configured to be fixedly coupled to a main body of a medicament delivery device, wherein the first support comprises a first attraction component; and a second support moveable relative to the first support between an initial position and a hold position and configured to be fixedly coupled to a needle cover of the medicament delivery device, wherein the second support includes a second attraction component, and wherein at least one of the first attraction component and the second attraction component is a magnet, and the other of the first attraction component and the second attraction component is a magnet or a ferromagnetic material; and wherein movement of the second support towards the hold position moves the second attraction component towards the first attraction component.