Male Luer Connector With Pen Needle Threads

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Solution Overview

Problem

Conventional pen needles are inadequate for piercing rubber stoppers due to their short length and small gauge, leading to inefficiencies in aspirating medication from vials, as they often bend, buckle, or require excessive time and force.

Innovation Solution

A male Luer connector with a tapered elongate tip and collar design, compatible with ISO standards, that includes a plurality of threads for secure connection with pen needles, allowing for efficient aspiration and maintaining compatibility with standard female Luer connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pen needles are used for piercing rubber stoppers, then injection to subcutaneous region is achieved, but needle damage occurs and aspiration efficiency decreases

Engineering Contradiction:

Improveneedle integrityVSAvoidaspiration speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The connector is designed to accept both pen needles and standard Luer needles, allowing the same connector to serve multiple functions: injecting medication via pen needles and aspirating medication via standard Luer needles with longer, more robust cannulas

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Length of moving object

If pen needles with shorter cannula length are used, then subcutaneous injection is achieved, but inability to pierce rubber stoppers occurs

Engineering Contradiction:

Improveneedle cannula lengthVSAvoidcompatibility with vial stoppers

Core Design Contradiction:

Length of moving objectVSAdaptability or versatility

Solution Approach 1:

The connector accepts both pen needles (for subcutaneous injection) and standard Luer needles (for vial aspiration), allowing the system to adapt to different needle types based on the required function

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If pen needles with smaller gauge are used, then subcutaneous injection is achieved, but excessive withdrawal forces are required

Engineering Contradiction:

Improveinjection capabilityVSAvoidwithdrawal force

Core Design Contradiction:

Ease of manufactureVSForce

Solution Approach 1:

The connector allows switching from pen needles (small gauge, for injection) to standard Luer needles (larger gauge, for aspiration), enabling the system to use appropriately sized needles for each function to minimize required force

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Ease of operation

If pen needles are used for medication aspiration, then subcutaneous injection is enabled, but aspiration time increases

Engineering Contradiction:

Improveinjection functionalityVSAvoidaspiration time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The connector accepts both pen needles (for injection) and standard Luer needles (for rapid aspiration), allowing the system to use the most efficient needle type for each specific task

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240342394A1Syringe Having Combined Luer Lock And Pen Needle Attachment Capability

Publication Date: 2024.10.17 BECTON DICKINSON & CO

AI summary

A male needless connector having a tapered elongate tip and a collar compliant with ISO standards, the collar having an outer sidewall surface with a plurality of threads for connection to corresponding inner threads of a pen needle. The male needleless connector having a taper between a distal end of the elongate tip and an inner sidewall of the elongate tip. The male needless connector being configured to receive a pen needle.