Pen Needle Adapter Rotating Hub Injection System

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Solution Overview

Problem

Existing medication pen needle systems face inefficiencies and inconveniences, particularly when trying to attach and use pen needles with large medication delivery pens in hard-to-access cavities, leading to difficulties in ensuring sterility and ease of use.

Innovation Solution

A multiple carrier injection system comprising an adapter with arms that engage a pen needle assembly, allowing the hub to rotate and move from a sealed position to a position that enables the needle to pierce the medication delivery pen's septum, facilitating attachment and dispensing of medication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional single carrier system is used, then the pen needle can be attached to the medication delivery pen, but it becomes difficult to access and attach needles in hard-to-reach cavities

Engineering Contradiction:

Improveease of attaching pen needleVSAvoidcavity accessibility

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The injection system is divided into multiple separate carrier cavities (first carrier cavity, second carrier cavity, etc.) within the housing, allowing each needle to be independently accessed and attached. This segmentation enables users to easily reach and manipulate individual needles even when multiple are stored in the same device.

Inventive Principle:

Principle #1Segmentation

2Reliability

If multiple pen needles are stored in separate carriers, then sterility is maintained, but the device size increases and becomes harder to handle

Engineering Contradiction:

Improvesterility maintenanceVSAvoiddevice size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

Multiple carrier cavities are nested within a single housing structure, with each cavity containing a pen needle assembly. The carriers are arranged to fit compactly within the overall device volume, maintaining sterility through separate sealed cavities while keeping the total device size manageable for portability.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Quantity of substance

If the medication delivery pen is large, then it can accommodate sufficient medication volume, but it becomes difficult to attach small pen needle assemblies to it

Engineering Contradiction:

Improvemedication volumeVSAvoidease of attaching pen needle

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

An adapter component serves as an intermediary between the large medication delivery pen and the small pen needle assembly. The adapter includes engagement features that interface with both the pen's mounting structure and the needle hub, facilitating secure attachment despite size mismatches between the components.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11504483B2Pen needle multiple carrier injection system

Publication Date: 2022.11.22 EMBECTA CORP

AI summary

A multiple carrier injection system includes an adapter, having at least one arm, and a pen needle assembly. The pen needle assembly includes a hub retaining a needle and a bullet having a cover to seal the bullet, where the bullet encloses the hub in a first position. The arm engages the adapter to the hub, and the arm causes the hub to rotate within the bullet to move the hub into a second position.