Non-adhesive IV Start Kit Mechanical Anchor

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Solution Overview

Problem

Conventional methods for securing IV lines using adhesive tape are ineffective in preventing needle movement and cause skin irritation and pain upon removal, leading to frequent reinsertion and additional treatment needs.

Innovation Solution

A method involving a non-adhesive anchor and outer covering, along with an optional antimicrobial patch, is used to securely insert and maintain the catheter without adhesives, ensuring the catheter remains in place without skin irritation and facilitates pain-free removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adhesive surgical tape is used to hold the catheter hub or tubing to the patient's skin, then the catheter can be temporarily secured, but the adhesive tape is ineffective to anchor the needle and prevent catheter movement permanently and securely

Engineering Contradiction:

Improvecatheter positioning stabilityVSAvoidremoval difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent removes the adhesive component entirely from the securing system. Instead of using adhesive tape to hold the catheter, the invention uses a mechanical anchoring system consisting of a needle anchor that engages with the catheter hub through friction and geometric interlocking, eliminating the need for adhesive bonding while maintaining secure positioning.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a needle anchor as an intermediary component between the catheter hub and the patient's skin. This anchor serves as a mediator that provides mechanical engagement with the catheter while distributing forces across a larger area of skin, preventing both catheter movement and skin damage during removal.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If adhesive tape is used to secure the catheter, then temporary holding is achieved, but prolonged contact with the adhesive tape causes skin irritation

Engineering Contradiction:

Improvecatheter securing effectivenessVSAvoidskin irritation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent completely eliminates adhesive materials from the catheter securing system. The needle anchor uses purely mechanical principles - friction, normal force, and geometric interlocking - to secure the catheter without any adhesive contact with the skin, thereby eliminating skin irritation caused by prolonged adhesive exposure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical bonding mechanism (adhesive) with a mechanical bonding mechanism (friction and geometric interlocking). The needle anchor engages the catheter hub through mechanical means rather than chemical adhesion, fundamentally changing the securing mechanism to avoid skin irritation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If adhesive tape is removed from the patient's skin after the procedure, then the catheter can be taken out, but removal of the adhesive tape often injures the patient's skin and causes localized pain

Engineering Contradiction:

Improveremoval easeVSAvoidskin injury and pain

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent removes adhesive materials from the system, eliminating the source of skin injury during removal. The needle anchor and outer covering are designed to be peeled or pulled away from the skin without adhesive bonding, allowing painless removal that does not tear or damage the skin.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an outer covering that acts as a cushioning layer between the securing mechanism and the patient's skin. This covering protects the skin during both the securing and removal processes, preventing injury and pain when the device is taken off after the procedure.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Device complexity

If conventional adhesive tape is used to secure the catheter, then temporary attachment is achieved, but the adhesive tape frequently allows the needle to move within a vein

Engineering Contradiction:

Improvesecuring system simplicityVSAvoidneedle positioning stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent uses a composite securing system consisting of a needle anchor made from materials with high friction coefficients and an outer covering that provides additional mechanical support. This composite structure creates a rigid mechanical engagement that prevents needle movement within the vein while maintaining system simplicity.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS20230372608A1Non-adhesive iv start kit

Publication Date: 2023.11.23 PICKETT MARY

AI summary

The invention is directed to a method of securing a catheter to the body of patient without the use of adhesive materials. The method includes applying an anchor (e.g., non-adhesive tape) to the patient's skin adjacent to the site where the catheter needle will be inserted by a medical practitioner. The catheter needle is then inserted into the patient's vein. In some embodiments, an antimicrobial patch can be applied over the needle at the injection site. A non-adhesive covering is then applied over the system (e.g., the inserted needle, non-adhesive tape, and antimicrobial patch). In this way, the system is maintained in position, the catheter is accessible as needed, and pain is reduced when the system is disassembled.