Disposable Intra-osseous Access Device with Automatic Locking

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Solution Overview

Problem

Conventional intra-osseous access devices and bone marrow aspiration tools face challenges such as difficulty in accessing hard cortical bone, risk of bone fracture, pain to the patient, potential for needle overshoot or undershoot, reusability leading to infection risks, and time-consuming sterilization processes, especially in resource-constrained settings.

Innovation Solution

A non-reusable intra-osseous access device featuring a multi-splined axial shaft with a spring-clutch mechanism, automatic locking, and a trocar holder with expandable elements, allowing for controlled access through the cortical layer and ensuring the device cannot be reused, thereby preventing infection and simplifying deployment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional intra-osseous access devices are made reusable, then device cost is reduced, but infection risk increases and sterilization time is consumed

Engineering Contradiction:

Improveinfection preventionVSAvoidsterilization time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements a disposable intra-osseous access device that is discarded after single use, eliminating infection risks associated with reuse and sterilization. The device is designed to be inexpensive enough to justify single-use disposal, ensuring patient safety while maintaining cost-effectiveness in emergency care settings

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Ease of operation

If manual force is applied to insert needle through hard cortical bone, then access is achieved, but bone fracture risk increases and patient pain increases

Engineering Contradiction:

Improvebone accessVSAvoidbone fracture risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates a vibration mechanism that oscillates the needle at high frequency during insertion, reducing friction and resistance between the needle and hard cortical bone. This allows smoother penetration with significantly reduced manual force, minimizing bone fracture risk and patient pain while maintaining effective bone access

Inventive Principle:

Principle #18Mechanical vibration

Solution Approach 2:

The needle tip is designed with a curved or angled configuration that facilitates gradual engagement with the cortical bone surface, allowing the needle to follow the bone contour and penetrate more smoothly rather than forcing a straight-line insertion that creates high stress concentrations and fracture risk

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Speed

If needle is inserted without controlled movement, then insertion speed is increased, but needle position precision deteriorates causing overshoot or undershoot

Engineering Contradiction:

Improveinsertion speedVSAvoidneedle position accuracy

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The patent incorporates visual or tactile feedback mechanisms that provide real-time information to the operator about needle depth and position relative to the cortical bone layers. This feedback loop enables the operator to maintain high insertion speed while continuously adjusting to achieve precise needle placement, preventing overshoot into the medullary cavity or undershoot failing to penetrate the cortex

Inventive Principle:

Principle #23Feedback

4Productivity

If same needle is used for multiple aspirations, then device productivity is improved, but infection risk increases

Engineering Contradiction:

Improveaspiration efficiencyVSAvoidinfection prevention

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements a disposable needle design that is discarded after single use, eliminating cross-contamination and infection risks associated with reusing needles for multiple aspirations. The low cost of the disposable needle allows for efficient aspiration procedures without compromising patient safety through repeated use of the same needle

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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

The device enables safe, controlled access to bone marrow without the risk of reusing contaminated equipment, reducing morbidity and mortality in emergency situations and improving efficiency in resource-constrained environments by ensuring one-time use and preventing infection transmission.

Implementation Method 1

A non-reusable intra-osseous access device featuring a multi-splined axial shaft with a spring-clutch mechanism

Methodology Applied

Scientific EffectSpring mechanism: Spring

Data Source

PatentUS10238420B2Non-reusable intra-osseous access device and method thereof

Publication Date: 2019.03.26 SEC

AI summary

Disclosed is a non-reusable intra-osseous access device and method thereof. The non-reusable intra-osseous access device which can be easily rendered non-reusable after establishing the access into the marrow region includes the automatic locking of driver unit 5 after removal of needle and trocar assembly from the driver unit. Further, the non-reusable intra-osseous access device also includes the non-loading of the trocar and or needle hub and or trocar with needle hub.