Reusable Syringe Discharge Element with Leaf Spring System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disposable syringes generate excessive waste and pose a risk of infectious disease transmission due to improper reuse, particularly on the drug scene, and lack user-friendly and safe handling mechanisms.
Innovation Solution
A disposable syringe design featuring a reusable discharge element and a single-use storage element, where the discharge element is made from a single piece of plastic with a leaf spring system and spiral spring, allowing for automated and safe injection with user-independent operation, and the storage element is designed for one-time use and easy disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire syringe construction is discarded after use, then the risk of infectious disease transmission is reduced, but material wastage increases
Solution Approach 1:
The syringe is divided into two separable components: a reusable discharge element and a disposable storage element. The storage element (syringe body with needle) is discarded after single use to eliminate contamination risk, while the discharge element (plunger mechanism with spring system) is retained and reused, thereby reducing material wastage while maintaining safety
Solution Approach 2:
The patent implements selective discarding of only the storage element after use, while recovering and reusing the discharge element. This partial discarding approach eliminates the need to discard the entire syringe, reducing material waste while ensuring the disposable portion that contacts the drug is properly discarded
2Reliability
If the syringe is designed for single-use disposal, then the risk of misuse is reduced, but the complexity of the system increases due to separable components
Solution Approach 1:
The syringe is segmented into a disposable storage element and a reusable discharge element that can be easily separated. This segmentation enables selective disposal of only the contaminated portion while simplifying the reuse process, as the discharge element can be independently cleaned and refilled without complex disassembly
Solution Approach 2:
The discharge element is designed with universal functionality to work with multiple storage elements. The standardized interface and mechanism allow the same discharge element to be reused with different syringe bodies, reducing overall system complexity while preventing misuse through proper design
3Loss of substance
If a reusable discharge element is used, then material wastage is reduced, but the ease of operation decreases due to assembly and disassembly requirements
Solution Approach 1:
The discharge element is pre-assembled with the spring mechanism and plunger components in a ready-to-use configuration. The storage element is designed to be simply attached to this pre-prepared discharge element, eliminating complex assembly steps and maintaining ease of operation while enabling reuse
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 syringe reduces material wastage and minimizes the risk of injury and misuse by allowing for safe, automated injection with easy disposal of the storage element after use, enhancing user safety and sustainability.
Implementation Method 1
a compression spring element is formed integrally with the leaf spring base and the ceiling region. The compression spring element entails compressible spring elements which are integrally connected to the the ceiling region and the leaf spring base
Implementation Method 2
The leaf spring system comprises a plunger and a spiral spring arranged around the plunger, wherein the plunger and the spiral spring can be pushed into the discharge sleeve and the spiral spring is arranged between the leaf spring base and a spiral spring stop of the storage element, wherein the plunger abuts against the stopper, but the spiral spring abuts against the spiral spring stop. When the storage element is pushed into the discharge sleeve, the spiral spring is compressed.
Data Source
AI summary
A syringe having a dispensing element (20) and having a mounting element (2), wherein the dispensing element (20) has a dispensing sleeve (21) and a leaf spring system (3), wherein the mounting element (2) has a syringe body (17), and an injection needle (16) is formed on one end on the syringe body (17) and a detent-engagement flange (19) is formed on the other end, wherein, in the syringe body (17), there is arranged a movable stopper (18), wherein the leaf spring system (3) comprises a piston (6) and a spiral spring (5) arranged around the piston (6), wherein the piston (6) can be slid into the dispensing sleeve (21), and the spiral spring (6) is arranged between a leaf spring base (22) and a spiral spring abutment, wherein the piston (6) abuts against the stopper (18), wherein the dispensing sleeve (21) has a guide duct and the dispensing sleeve (21) comprises a first locking means (7) and a second locking means (9), wherein the detent-engagement flange (19) is movable in the guide duct and is fixable and releasable at the first locking means (7) or the second locking means (9).