Syringe Needle Shield Ribs for Grip and Recoil Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing syringe needle shields face challenges in ergonomics, leading to slippage, recoil issues, and difficulties in recapping, while also presenting manufacturing complexities.

Innovation Solution

A syringe needle shield with an ergonomically designed configuration, featuring a proximal open end, a distal closed end with a flange, and a plurality of ribs on the outer surface, providing improved grip, leverage, and stability, while allowing standard injection molding procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional smooth shield surface is used, then manufacturing is simple, but grip is poor causing slippage and recoil

Engineering Contradiction:

ImprovegripVSAvoidshield structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The shield incorporates ribs with flat and concave surfaces at specific locations (adjacent to the flange) to provide enhanced grip, while the rest of the shield maintains a simple smooth structure for easy manufacturing. This localized addition of complexity only where needed resolves the contradiction between grip quality and manufacturing simplicity.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If a shield with ergonomic features is added, then grip and leverage improve, but manufacturing complexity increases

Engineering Contradiction:

ImproveleverageVSAvoidmanufacturing process

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The ribs are designed with specific geometric parameters (flat surface adjacent to concave surface) that can be directly formed using standard injection molding techniques. By optimizing the geometric parameters within the capabilities of existing manufacturing processes, the patent achieves improved leverage without requiring complex or specialized manufacturing methods.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If the shield structure is simplified, then manufacturing is easier, but recapping performance deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidrecapping

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The shield is segmented into distinct functional zones: a flange for structural support, ribs with flat and concave surfaces for grip and leverage during recapping, and a smooth body for manufacturing simplicity. This segmentation allows each zone to be optimized for its specific function while maintaining overall manufacturing ease through standard injection molding.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12303673B2Syringe needle shield

Publication Date: 2025.05.20 BECTON DICKINSON & CO

AI summary

A syringe needle shield (10) and a method of using the syringe needle shield (10) that is configured to enclose a needle (4) of a syringe (2), the syringe needle shield (10) comprising a proximal end (20) providing access to an inner cavity (50), a distal end (22) including a flange (30), and an outer surface (24) including a plurality of ribs (40) disposed adjacent to the flange (30), each of the plurality of ribs (40) including a substantially flat surface (42) and a concave surface (44), wherein the substantially flat surface (42) is adjacent to the concave surface (44).