Subcutaneous Injection Device with Tissue Gripping Mechanism

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Solution Overview

Problem

Accidental needle sticks remain a significant issue in healthcare settings despite regulations, with many medical procedures requiring needles, such as subcutaneous insulin injections, lacking effective solutions for safe tissue gripping and needle handling.

Innovation Solution

A hand-operated device with a cylindrical body, flange, and skin-contacting elements, including spring and gripping components, designed to guide a syringe and assist in gripping tissue for safe subcutaneous injections, preventing unwanted needle sticks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a needle is used for subcutaneous injection administration, then the injection can be delivered effectively, but accidental needle sticks occur frequently causing safety hazards

Engineering Contradiction:
Improveinjection administration reliabilityVSAvoidneedle stick hazard
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device introduces an intermediary guide structure that mediates between the needle and the patient's tissue. The guide element positions and stabilizes the needle during insertion, allowing the needle to be controlled more precisely while reducing the risk of accidental sticks to healthcare workers during the injection process

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If manual tissue gripping is performed during subcutaneous injection, then tissue engagement is achieved, but inconsistent gripping leads to injection inaccuracies

Engineering Contradiction:
Improvetissue gripping capabilityVSAvoidinjection placement precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The device enables self-service tissue gripping through its guide structure that automatically engages with and positions the tissue. The guide element is designed to naturally grasp and stabilize the tissue during insertion, eliminating the need for manual gripping techniques and ensuring consistent, accurate tissue engagement without requiring skilled manual manipulation

Inventive Principle:
Principle #25Self-service

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 effectively prevents needle sticks and aids in safe tissue gripping, enhancing the safety and efficacy of subcutaneous injections by providing a controlled mechanism for needle insertion and tissue engagement.

Implementation Method 1

a spring element disposed at a proximal end and configured to couple with the cylindrical body

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11471615B2Device for assisting subcutaneous injections
Publication Date: 2022.10.18 MCDANIELS CHRISTINA
  • US11471615B2 patent drawing
  • US11471615B2 patent drawing
  • US11471615B2 patent drawing

AI summary

A device for assisting a subcutaneous injection is disclosed. The device includes features which prevent an unwanted needle stick and assist the gripping of tissue for performing a safe and effective subcutaneous injection.