Syringe Safety Device Integrated Sleeve and Collar
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of safety devices for syringes to prevent puncture injuries is complex and costly, particularly in the context of prefilled syringes, where additional needle protection parts are required, leading to inefficiencies and high production costs.
Innovation Solution
A safety device comprising a sleeve element and an inner element with a collar section and a lancing means protection section, where the collar section is detachable and can be easily assembled to both attach and protect the lancing means, utilizing a predetermined breaking point for detachment and a spring element for automatic protection after use, simplifying the assembly process and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded safety sleeve with guide pin and collar is used to protect the needle, then needlestick injury prevention is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the safety sleeve and needle guard into a single integrated component. The safety sleeve includes an encloving portion that surrounds the needle and a protective cap portion that covers the needle tip, eliminating the need for separate guide pins, collars, and multiple assembly steps. This merging reduces device complexity while maintaining needlestick injury prevention.
Solution Approach 2:
The safety sleeve serves multiple functions simultaneously: it acts as a protective covering for the needle, a guide for needle insertion, and a safety mechanism that prevents accidental needlestick injuries. The encloving portion provides structural support while the protective cap portion provides the actual protection, making the single component multi-functional.
2Reliability
If multiple separate components (mounting element and needle guard) are used, then protection function is improved, but assembly complexity and production cost increase
Solution Approach 1:
The patent merges the mounting element and needle guard into a single integrated safety sleeve component. The safety sleeve is designed as one piece with the encloving portion and protective cap portion, eliminating the need for separate mounting elements and needle guards that would require multiple assembly steps and increase production complexity.
3Reliability
If a tight fit collar with guide pin is used to prevent tampering, then security against misuse is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent eliminates the separate collar and guide pin structure by integrating these functions into the safety sleeve itself. The safety sleeve includes an encloving portion that provides the structural framework and a protective cap portion that provides the protective function, removing the need for additional collars and guide pins that would increase complexity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a safety device for a syringe for avoiding stab wounds, said syringe having a syringe body and a piercing means arranged on the distal end of the syringe body. The safety device comprises a sleeve element that extends along an axial direction (X) and at least partially encloses the piercing means and the syringe body, and an inner element which is at least arranged at least in sections inside the sleeve element and surrounds the piercing means. Said safety device is characterised in that the inner element comprises a rim section and a piercing means protection section surrounding the piercing means. Said rim section can be arranged on a distal end of the syringe body, the safety device is secured to the syringe body, and the piercing means protection section can be removed from the rim section before using the syringe.