Joint Incision Dressing Structure for Sealed Motion-Tolerant Therapy

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Solution Overview

Problem

Existing negative-pressure therapy systems for articulating joints are inadequate in managing incisions and other tissue sites, failing to effectively promote tissue growth and healing while accommodating joint movement.

Innovation Solution

A therapy system comprising a dressing with a manifold designed for articulating joints, incorporating a flexible stem and arms that allow for range of motion, coupled with a negative-pressure source, controller, and sensors to manage pressure and fluid flow, promoting granulation and tissue growth through controlled negative pressure application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rigid dressing structure is used to maintain seal integrity, then sealing reliability is improved, but adaptability to joint movement deteriorates

Engineering Contradiction:

Improveseal integrityVSAvoidjoint movement accommodation

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The dressing structure transitions from rigid to dynamic by incorporating flexible materials and articulated components that can move with the joint. The dressing includes flexible arms and segments that maintain seal integrity while adapting to joint movement through controlled flexibility and articulation points.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The dressing employs flexible shell structures and thin film materials that can conform to the moving joint surface. These flexible components maintain the sealed environment while allowing the necessary range of motion, resolving the contradiction between seal integrity and movement accommodation.

Inventive Principle:

Principle #30Flexible shells and thin films

2Productivity

If negative pressure is applied to promote tissue growth, then tissue healing is improved, but risk of tissue damage increases

Engineering Contradiction:

Improvetissue growth rateVSAvoidtissue damage risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system incorporates feedback mechanisms including pressure sensors and controllers that continuously monitor the negative pressure applied to the tissue. This feedback loop allows the system to maintain optimal pressure levels that promote tissue growth while automatically adjusting to prevent excessive pressure that could cause tissue damage.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically changes pressure parameters based on tissue response and joint movement. By adjusting pressure magnitude and duration according to real-time conditions, the system maximizes tissue growth promotion while minimizing the risk of harmful effects.

Inventive Principle:

Principle #35Parameter changes

3Area of stationary object

If the dressing is designed to cover large joint areas, then treatment effectiveness is improved, but device complexity increases

Engineering Contradiction:

Improvecoverage areaVSAvoiddressing structure complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The dressing is divided into multiple segments or modules that can be independently positioned and secured on the joint. This segmentation allows the dressing to cover large joint areas effectively while simplifying the overall structure by breaking it into manageable components that are easier to manufacture and apply.

Inventive Principle:

Principle #1Segmentation

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

Enhances tissue growth and healing at incisions and other tissue sites on articulating joints by inducing micro-strain and reducing edema and bruising, while allowing for joint mobility, with the system capable of maintaining a sealed therapeutic environment for up to 14 days.

Implementation Method 1

reducing pressure in proximity to a tissue site can augment and accelerate growth of new tissue at the tissue site

Methodology Applied

Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

The manifold may include a plurality of fluid pathways adapted to distribute the reduced pressure to the tissue site

Methodology Applied

Scientific EffectFluid flow distribution: Pressure Gradient

Data Source

PatentEP3936094B1Area management of tissue sites on articulating joints

Publication Date: 2026.02.25 SOLVENTUM INTELLECTUAL PROPERTIES CO

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AI summary

A dressing for managing an incision and surrounding tissue where edema and swelling may be present post-operation. The dressing may maximize coverage of area in articulating joints, such as a knee or elbow, while allowing for substantial range of motion. In some embodiments, the dressing may comprise an adhesive border configured to be adhered to skin around an articulating joint, a skin-interfacing fabric for minimizing skin irritation, a foam body for manifolding negative pressure and absorbing exudate and other body fluids, and a thin polymer film cap for sealing the assembly so negative pressure can be maintained throughout the dressing.