Needle Remover With Rotating Gripper for Safe Unscrewing

Solution Overview

Problem

Conventional needle removal methods pose a risk of needle stick injuries as they require users to handle the needle directly, increasing the likelihood of infection during the removal process.

Innovation Solution

A needle remover device featuring a guiding member and gripping means that allows for one-handed operation by rotating the needle relative to the holder, preventing counter-rotational movement and enabling safe unscrewing of the needle from its holder, which is then automatically released into a disposal container.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional needle removal methods are used requiring direct handling of the needle, then the removal operation can be performed, but the risk of needle stick injuries and infection increases

Engineering Contradiction:

Improvesafety during needle removalVSAvoidneedle stick injury risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a needle remover as an intermediary device between the user and the needle. The device includes a guiding member that receives the needle and a gripping means that holds the needle during removal, allowing the user to operate the device without directly touching the needle, thus eliminating the risk of needle stick injuries

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The needle remover is designed to perform the needle removal operation automatically once the device is engaged with the injection device. The gripping means rotates relative to the guiding member to unscrew the needle from the holder, and the needle is automatically released into a disposal container, requiring minimal user intervention and no direct contact with the needle

Inventive Principle:

Principle #25Self-service

2Ease of operation

If two-handed operation is used for conventional needle removal, then better control can be achieved, but the complexity of the operation increases and safety may be compromised

Engineering Contradiction:

Improvesimplicity of needle removal operationVSAvoidoperational steps required

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The needle remover is designed to perform the needle removal operation automatically once the device is engaged with the injection device. The gripping means rotates relative to the guiding member to unscrew the needle from the holder, and the needle is automatically released into a disposal container, requiring minimal user intervention and no direct contact with the needle

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The device is segmented into distinct functional components: a guiding member for receiving and guiding the needle, a gripping means for holding and rotating the needle, and a disposal container for receiving the removed needle. This segmentation allows each component to perform its specific function efficiently while simplifying the overall operation

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP2424598B1Needle remover and method for removing a needle

Publication Date: 2013.12.11 SANOFI AVENTIS DEUT GMBH

Figure 1
Figure 2
Figure 3~4

AI summary

A needle remover (2) for removing a needle (3) from a holder (4) comprises a guiding member (8) which is suitable for receiving the needle (3), and a gripping means (31) which is suitable for gripping the needle (3) when the needle (3) is at least partly inserted in the guiding member (8) in an inserting direction (22), wherein the gripping means (31) is configured to rotate when the gripping means (31) is moved in the inserting direction (22) with respect to the guiding member (8) so that the gripped needle (3) is unscrewed from the holder (4) when the holder (4) is moved in the inserting direction (22) with respect to the guiding member (8).