Negative Pressure Debridement Head Rotation Mechanism

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Solution Overview

Problem

Conventional debridement tools face challenges in effectively removing dead, damaged, or infected tissue from difficult-to-reach areas and immobile patients, often requiring extensive training to avoid damaging healthy tissue and controlling bleeding.

Innovation Solution

A debridement tool with a housing, reduced-pressure lumen, debridement head, impeller, and drive system that uses reduced pressure to rotate the debridement head and impeller, allowing for controlled removal of necrotic tissue while minimizing risk to healthy tissue, with a feedback pressure system for monitoring and adjusting pressure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional debridement tools are used to remove necrotic tissue, then debridement can be performed, but healthy tissue may be damaged and extensive bleeding may occur

Engineering Contradiction:

Improvesafety to healthy tissueVSAvoiddamage to healthy tissue and bleeding

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces manual mechanical cutting/abrading tools with a controlled mechanical system featuring a rotating debridement head with abrasive surfaces. This system uses controlled rotational motion combined with regulated contact pressure to selectively remove necrotic tissue while preserving healthy tissue, eliminating the need for operator skill in manual debridement techniques

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs adjustable parameters including rotational speed of the debridement head, contact pressure between the head and tissue, and duration of application. These parameters are optimized to achieve effective necrotic tissue removal while minimizing damage to healthy tissue and reducing bleeding risk

Inventive Principle:

Principle #35Parameter changes

2Reliability

If specialized training is provided for proper debridement techniques, then damage to healthy tissue is minimized, but training time and cost increase

Engineering Contradiction:

Improveproper debridement techniqueVSAvoidtraining time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The device is designed to be self-regulating and easy to operate, with automated controls for rotational speed and pressure regulation. The intuitive design allows healthcare providers to perform proper debridement techniques without extensive specialized training, as the device itself guides the process through its controlled mechanical action

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

By replacing complex manual debridement techniques with a controlled mechanical system, the patent eliminates the need for operators to learn and master difficult manual skills. The device performs the complex mechanical actions automatically, requiring minimal training for safe and effective use

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If conventional debridement tools are used on difficult-to-reach areas, then debridement may be attempted, but effectiveness is reduced due to challenging wound locations and immobile patients

Engineering Contradiction:

Improvedebridement effectivenessVSAvoidaccessibility to challenging wound locations

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The debridement device features a flexible, movable debridement head that can be positioned and oriented to access difficult-to-reach wound locations. The head can rotate and adapt to various wound geometries, enabling effective debridement of challenging areas that are difficult to reach with conventional rigid tools

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent introduces rotational motion and multi-directional positioning capabilities to the debridement head, allowing it to approach tissue from multiple angles and access three-dimensional wound cavities and hard-to-reach areas that conventional linear tools cannot effectively treat

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 tool enables efficient and controlled debridement with reduced risk to healthy tissue, requiring less training and minimizing bleeding, by using reduced pressure to dislodge necrotic tissue without damaging surrounding healthy tissue.

Implementation Method 1

a reduced-pressure lumen adapted to communicate reduced pressure... The impeller may be moveable relative to the housing and positioned in fluid communication with the reduced-pressure lumen

Methodology Applied

Scientific EffectReduced pressure: Pressure Gradient

Data Source

PatentUS10335184B2Negative pressure tissue debridement devices, systems, and methods

Publication Date: 2019.07.02 SOLVENTUM INTELLECTUAL PROPERTIES CO

AI summary

In some embodiments, a debridement tool may include a housing, a reduced-pressure lumen, a debridement head, an impeller, and a drive system. The debridement head may be moveable relative to the housing. The impeller may be positioned in fluid communication with the reduced-pressure lumen and be moveable relative to the housing by operation of reduced pressure being applied to the impeller. The drive system may be coupled between the impeller and the debridement head and be configured to impart movement from the impeller to the debridement head.