Controlled Intraosseous Needle Extraction With Tensile Puller

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods for extracting intraosseous needles lack safety and versatility, requiring significant force and risking accidental puncture during removal, and are not adaptable to users of varying strength or experience.

Innovation Solution

A device comprising a chamber, tensile puller, and actuator that allows for controlled extraction of the needle by distributing forces, minimizing the need for direct hand contact and incorporating safety locks to prevent accidental needle exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a standard medical syringe is used to extract the IO needle, then the needle can be removed from the bone, but the method requires significant force and risks accidental puncture during removal

Engineering Contradiction:

Improvesafety during needle removalVSAvoidforce required for extraction

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The patent introduces a specialized extraction device with a connector that interfaces with the IO needle's threaded connection. This intermediary device provides a controlled extraction mechanism with features like a flared distal end to engage the needle securely and a tensile puller that distributes extraction forces, eliminating the need to use the needle hub directly as a pull point and reducing accidental puncture risk

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The extraction device is divided into functional segments: a connector portion that engages the needle, a tensile puller mechanism that distributes extraction forces, and a chamber that houses components. This segmentation allows each part to perform its specific function optimally, with the tensile puller distributing forces across multiple engagement points rather than concentrating stress at a single point

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If existing extraction methods are used, then needle removal is possible, but they are not adapted to enable individuals of varying strength across multiple professions to perform the extraction

Engineering Contradiction:

Improveadaptability to users of varying strengthVSAvoidease of needle extraction

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The extraction device incorporates a tensile puller mechanism that can accommodate varying user strengths. The puller allows for controlled, gradual extraction force application and includes features like ratcheting or friction engagement that maintain extraction progress regardless of user strength variations. The device adapts to different extraction scenarios whether the user is strong or weak, experienced or inexperienced

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The connector is designed with a universal threaded interface that conforms to standard IO needle connections, making the extraction device universally applicable across different needle types and users. The device serves multiple functions: secure engagement with the needle, controlled force distribution during extraction, and safe containment of the needle hub during removal

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If the tensile puller is always exposed for easy access, then users can easily operate the device, but accidental movement to the deployed position while in the retracted position may occur

Engineering Contradiction:

Improveaccessibility of actuatorVSAvoidprevention of accidental needle exposure

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The device incorporates safety locks or guard features that prevent accidental actuator engagement. These preliminary protective measures are built into the device design, such as interlocks that must be deliberately disengaged or guards that physically block accidental activation, ensuring that needle extraction only occurs when intentionally initiated by the user

Inventive Principle:

Principle #9Preliminary anti-action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables safe and controlled removal of intraosseous needles by users of varying strength, reducing the risk of accidental puncture and allowing for easy disposal, while being adaptable to different user capabilities.

Implementation Method 1

The tensile puller may be configured to rotate independently from the chamber and can be held by friction of a seal around the tensile puller in the second aperture

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS12446921B2Needle removal device for intraosseous infusion

Publication Date: 2025.10.21 ANDERSON ERICK

AI summary

An intraosseous device may include a chamber portion having a proximal end and a distal end, wherein the proximal end includes a base, a tensile puller configured to extend through the chamber portion and slidingly engage the base, the tensile puller comprising a proximal end and a distal end, an actuator on the proximal end of the tensile puller, and a connector on the distal end of the tensile puller adapted to engage a needle.