Hemostatic Foam Applicator for Vascular Puncture Sites

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Solution Overview

Problem

Existing wound management technologies face challenges in uniformly and effectively applying medicinal or therapeutic materials to vascular puncture sites and percutaneous catheter sites to enhance clot formation, often resulting in material wastage and inefficiency.

Innovation Solution

A hemostatic surface application device featuring a non-dissolvable hemostatic foam layer, supported by a structural foam layer and a release layer, which is applied topically to retain clotting materials and promote hemostasis at wound sites, including vascular puncture sites and percutaneous catheter sites, with a strippable cover for controlled application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If conventional wound management methods are used to apply clotting materials, then bleeding reduction can be achieved, but material application is inefficient and wasteful

Engineering Contradiction:

Improvehemostatic material wastageVSAvoidapplication efficiency

Core Design Contradiction:

Loss of substanceVSProductivity

Solution Approach 1:

The device segments the hemostatic foam into a specific geometric configuration (circular or oval foam portion) that is pre-positioned on the applicator surface. This segmentation allows precise targeting of the bleeding site, preventing material wastage while maintaining high application efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The hemostatic foam is pre-positioned on the applicator surface in a ready-to-apply state, with the release layer already in place. This preliminary preparation eliminates the need for manual material handling and application adjustments during the procedure, significantly improving productivity and reducing material loss.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If hemostatic foam is applied to vascular puncture sites, then clot formation is enhanced, but uniform application is difficult to achieve

Engineering Contradiction:

Improveclot formation effectivenessVSAvoidapplication uniformity

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The device provides local quality by concentrating the hemostatic foam in a specific geometric pattern (circular or oval portion) that matches the typical size and shape of vascular puncture sites. This localized configuration ensures uniform coverage of the bleeding area while maintaining reliable clot formation effectiveness.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The release layer acts as a flexible thin film that allows the hemostatic foam to conform to the irregular surface of the wound site. This flexibility ensures uniform contact and application across the bleeding area, improving both application uniformity and clot formation reliability.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If a structured foam device is used for hemostasis, then bleeding reduction is effective, but device complexity increases

Engineering Contradiction:

Improvehemostasis effectivenessVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The device uses composite materials by combining the hemostatic foam with a release layer and an applicator surface in a single integrated structure. This composite approach maintains hemostasis effectiveness while avoiding the need for multiple separate components, thereby limiting the increase in device complexity.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The device is designed as a disposable single-use applicator with an integrated hemostatic foam portion. This approach ensures reliable hemostasis effectiveness for each use while avoiding the complexity of reusable components that would require cleaning, sterilization, and maintenance protocols.

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 effectively reduces bleeding and enhances clot formation by retaining at least 99.5% of the hemostatic foam weight when in contact with blood, providing rapid hemostasis and minimizing material wastage, suitable for use over vascular puncture and catheter sites.

Implementation Method 1

The device effectively reduces bleeding and enhances clot formation by retaining at least 99.5% of the hemostatic foam weight when in contact with blood

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS11975114B2Single use, topical, hydrophilic article with a hemostatic foam

Publication Date: 2024.05.07 KOAG LLC

AI summary

A hemostatic surface application device having a region of hemostatic foam for contact with a patient's skin where a wound exists or is created, the device includes: a release layer, the release layer in contact with a hemostatic flexible foam section, and a structural foam layer having a front side and a back side surrounding the hemostatic flexible foam layer, forming a generally central hemostatic surface exposed through the front side of the surrounding structural foam layer, and a support layer adhered to the backside of the structural foam layer.