Telescopic Dual-Biasing Medicament Delivery for Compact Large-Volume Injection
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Solution Overview
Problem
Existing medicament delivery devices, particularly large volume devices, require significant space for single biasing members, making them cumbersome for patient use and storage.
Innovation Solution
A medicament delivery device utilizing two biasing members, each with different characteristics, arranged in a telescopic configuration to reduce overall length and enhance compactness, allowing for easier transport and storage while maintaining efficient medicament dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single biasing member is used to dispense large volumes of medicament, then the device can deliver the required volume, but the device length becomes excessive and cumbersome for patient use
Solution Approach 1:
The single biasing member function is segmented into two separate biasing members (first and second biasing members) with different characteristics. Each biasing member operates over a specific displacement range, collectively achieving the total displacement needed for large volume medicament delivery while keeping individual member lengths manageable.
Solution Approach 2:
The biasing members are arranged in a telescopic configuration where one biasing member can be disposed inside the other, utilizing radial space rather than only linear space. This dimensional arrangement reduces the overall device length in the direction of medicament dispensing while maintaining the capability to deliver large volumes.
2Quantity of substance
If the device is designed for large volume medicament delivery, then it can treat patients requiring high capacity injection, but the device becomes difficult to transport and store
Solution Approach 1:
The first and second biasing members are arranged in a telescopic configuration where one biasing member is disposed inside the other when the dispensing member is in the first position. This nesting arrangement significantly reduces the overall device footprint, making the high-capacity device easier to transport and store while maintaining its large volume delivery capability.
3Length of moving object
If two biasing members are used instead of one, then the device length is reduced, but the device complexity increases
Solution Approach 1:
Both biasing members work together to achieve the same overall function of dispensing medicament, with each contributing to different portions of the dispensing stroke. This multi-functionality allows the system to reduce device length while maintaining the capability to deliver large volumes, as the combined action of both biasing members replaces what would require a single long biasing member.
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 dual-biasing member design reduces device size without compromising dispensing efficiency, providing a more user-friendly and compact solution for administering large volumes of medicament.
Implementation Method 1
a first biasing member configured to urge the dispensing member from the first position to an intermediate position
Implementation Method 2
a second biasing member configured to urge the dispensing member from the intermediate position to the second position
Data Source
AI summary
The present disclosure relates to a medicament delivery device comprising a housing, a reservoir for medicament disposed in the housing and a dispensing member. The dispensing member is moveable relative to the housing from a first position to a second position to dispense medicament from the reservoir when the reservoir contains medicament. The medicament delivery device further comprises first and second biasing members. The first biasing member is configured to urge the dispensing member from the first position to an intermediate position. The second biasing member is configured to urge the dispensing member from the intermediate position to the second position.