Catheter Securement Retainer with Movable Clips
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Solution Overview
Problem
Traditional methods of securing catheters to patients using tape lead to complications such as infection, phlebitis, catheter migration, and skin excoriation due to adhesive residue and frequent dressing changes.
Innovation Solution
A securement system comprising a retainer with movable clips and a flexible anchor pad, which securely attaches medical articles by forming a channel to inhibit movement and reduce skin irritation, using a medical-grade adhesive that minimizes skin excoriation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive tape is used to secure the catheter to the patient, then the catheter can be held in place, but the adhesive causes skin excoriation and the tape fails to adequately limit catheter motion
Solution Approach 1:
The patent removes the adhesive component entirely from the securement system. The retainer device secures the catheter through mechanical means only - specifically, the catheter is held by friction between the retainer's compression members and the catheter body, eliminating adhesive contact with the patient's skin completely.
Solution Approach 2:
The retainer device serves as an intermediary between the catheter and the patient's skin. Instead of adhesive tape contacting the skin directly, the retainer mechanically secures the catheter and distributes forces away from the skin, using the catheter hub and surrounding structures as intermediate attachment points.
2Reliability
If adhesive tape is frequently applied and removed to maintain catheter positioning, then catheter migration can be prevented, but the repeated adhesive application builds up residue on the catheter surface
Solution Approach 1:
The patent eliminates adhesive entirely from the securement mechanism. The retainer maintains catheter positioning through mechanical friction and geometric constraints rather than adhesive bonding, so no adhesive residue can accumulate on the catheter surface during repeated applications.
Solution Approach 2:
The retainer device is designed as a disposable component that can be easily applied and removed multiple times without leaving residue. Each new retainer provides a fresh mechanical securement solution without the cumulative problems of adhesive buildup.
3Reliability
If adhesive tape is used to secure the catheter, then the catheter can be held stationary, but the tape allows dirt and contaminant particles to accumulate at the insertion site
Solution Approach 1:
The patent removes the adhesive tape component that traps contaminants. The retainer device secures the catheter through open mechanical structures that do not create enclosed spaces where dirt and particles can accumulate, allowing the insertion site to remain cleaner.
Solution Approach 2:
The retainer uses flexible compression members that can conform to the catheter shape while maintaining securement. These flexible elements provide coverage without creating the rigid, enclosed structure of tape that traps contaminants.
4Strength
If traditional tape securement is used, then the catheter can be attached to the patient, but the system lacks mechanisms to prevent longitudinal motion of the catheter
Solution Approach 1:
The retainer is divided into multiple functional segments: compression members for lateral securement, a distal barrier for longitudinal motion prevention in one direction, and a proximal barrier for longitudinal motion prevention in the opposite direction. Each segment addresses specific motion control needs.
Solution Approach 2:
The retainer's compression members are positioned and dimensioned asymmetrically to provide differential restraint. The distal and proximal barriers have different geometries optimized for preventing catheter movement in opposite longitudinal directions, creating asymmetric but comprehensive motion control.
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 system effectively restricts catheter movement, reduces the risk of infection, and minimizes skin irritation by providing a secure and adhesive-free attachment method, enhancing patient safety and caregiver handling.
Implementation Method 1
The flexible anchor has a mounting surface which is at least partially covered by an adhesive layer for attaching the securement device to the patient's body
Data Source
AI summary
An anchoring system includes a device which permits a portion of a catheter or similar medical article to be easily anchored to a patient, desirably without the use of tape or needles and suture. The anchoring system comprises an anchor pad and a retainer mounted upon the anchor pad. The retainer includes at least one clip forming at least a portion of a central channel and that moves generally in a lateral direction to capture the medical article to be retained. In certain embodiments, the clip moves in lateral and transverse directions between closed and open positions. The medical article is secured within the central channel. The channel may have a straight or tapering shape depending on the medical article to be retained.