Fluid Filtration and Direct Incubation for Rapid Pathogen Identification
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Solution Overview
Problem
Current methods for identifying and sensitivity testing of pathogens in bloodstream infections are time-consuming, often taking 48 to 72 hours, leading to delayed and ineffective antibiotic treatments, which can be fatal due to the rapid development of resistant pathogens.
Innovation Solution
A device that simultaneously collects and processes body fluids, using a filter to isolate pathogenic particles and then incubate them directly on a nutrient medium, reducing the time to identification and allowing for targeted antibiotic treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current standard methods are used for pathogen identification and sensitivity testing, then accurate results can be obtained, but the process takes 48 to 72 hours or longer
Solution Approach 1:
The device performs preliminary filtration of the blood sample to concentrate pathogenic particles on the filter element before incubation. This preliminary concentration step eliminates the need for lengthy liquid medium incubation, reducing the diagnosis time from 48-72 hours to significantly shorter periods while maintaining identification accuracy through direct solid medium culturing of the concentrated particles.
Solution Approach 2:
The invention extracts pathogenic particles from the liquid blood sample using a filter element, separating them from the bulk fluid. This extraction concentrates the pathogens on the filter surface, enabling direct incubation on solid nutrient medium without requiring prolonged liquid medium cultivation, thus resolving the time-accuracy contradiction.
2Reliability
If broad-spectrum antibiotics are administered to cover likely pathogens, then treatment coverage is improved, but selection pressure for resistant isolates increases
Solution Approach 1:
The device performs preliminary concentration of pathogenic particles through filtration before incubation. This enables rapid identification of the specific pathogen causing the bloodstream infection, allowing physicians to prescribe targeted narrow-spectrum antibiotics from the outset rather than relying on broad-spectrum empiric therapy, thereby reducing selection pressure for resistance while maintaining effective treatment coverage.
Solution Approach 2:
The rapid pathogen identification provided by the device creates immediate feedback that enables physicians to adjust antibiotic therapy from broad-spectrum empiric treatment to targeted pathogen-specific treatment. This feedback loop reduces unnecessary broad-spectrum antibiotic exposure and minimizes the development of resistant isolates while ensuring appropriate treatment coverage.
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
This approach significantly reduces the time to pathogen identification and enables targeted antibiotic treatment, potentially reducing mortality rates and the spread of resistant pathogens by providing effective, timely treatment.
Implementation Method 1
a filter device, which has a filter element for filtering pathogenic particles or other components out of the fluid
Implementation Method 2
a cultivation device, which is designed such that the filtered out pathogenic particles are incubated on a nutrient medium
Data Source
AI summary
A device for treating fluids, particularly body fluids, comprises a receiving container for receiving the fluid from a body, a filter device which comprises a filter element for filtering out pathogenic particles from the fluid, and a cultivation device configured to incubate the filtered pathogenic particles on a nutrient medium, the filter device being coupled to the cultivation device such that the pathogenic particles can be transferred from the filter element into the cultivation device without contamination. A corresponding method is also provided.