Pressure Wave Decontamination of Medical Devices
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Solution Overview
Problem
Current methods for cleaning and disinfecting reusable medical devices such as endoscopes, ventilators, and hemodialysis units are inefficient, prone to errors, and rely heavily on chemical disinfectants, which can lead to contamination and environmental concerns, particularly during the reprocessing of semi-critical and critical medical equipment.
Innovation Solution
The use of focused acoustic pressure shockwaves or special high-intensity pressure waves, combined with low-frequency ultrasound, provides a non-chemical, energy-efficient method for cleaning and disinfecting medical devices by mechanically dislodging pathogens and biofilms without causing damage to the equipment, allowing for a single-phase process that can be integrated into existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical disinfectants are used for cleaning and disinfecting medical devices, then disinfection effectiveness is improved, but contamination risk and environmental impact increase
Solution Approach 1:
The patent replaces chemical disinfection systems with a mechanical/physical system using focused acoustic pressure shockwaves. The shockwaves are generated by electrohydraulic, electromagnetic, or piezoelectric means and directed at the medical device surfaces to mechanically dislodge and destroy pathogens and biofilms through cavitation and mechanical stress, eliminating the need for chemical disinfectants and their associated contamination and environmental hazards
Solution Approach 2:
The patent changes the physical parameters of the cleaning process by using high-intensity focused acoustic pressure shockwaves with specific frequency ranges (20 Hz to 1 MHz) and pressure amplitudes. These parameter changes enable effective pathogen removal through mechanical means rather than chemical action, resolving the contradiction between disinfection effectiveness and contamination risk
2Reliability
If multiple-phase cleaning and disinfection processes are used, then disinfection thoroughness is improved, but process complexity and time consumption increase
Solution Approach 1:
The patent merges multiple discrete cleaning and disinfection phases into a single integrated process. The focused acoustic pressure shockwave system simultaneously performs mechanical cleaning, biofilm disruption, and pathogen destruction in one treatment cycle, eliminating the need for separate manual cleaning, chemical disinfection, and rinsing steps that characterize traditional multi-phase processes
Solution Approach 2:
The shockwave system serves multiple functions simultaneously: it cleans organic material, disrupts biofilms, and destroys pathogens through the same mechanical action. This multi-functionality allows a single-phase process to achieve what traditionally required multiple specialized phases, reducing overall process complexity
3Productivity
If high-intensity pressure waves are used for cleaning, then cleaning effectiveness is improved, but risk of equipment damage increases
Solution Approach 1:
The patent applies focused acoustic pressure shockwaves that concentrate high-intensity energy only at the focal point on the device surface where pathogens and biofilms are located. The localized application allows aggressive cleaning action precisely where needed while leaving the rest of the equipment unaffected, maintaining integrity of sensitive components
Solution Approach 2:
The system uses dynamic control of shockwave parameters including adjustable frequency (20 Hz to 1 MHz), pressure amplitude, and pulse duration. This dynamic adjustment allows optimization of cleaning effectiveness for different contaminants while staying below damage thresholds for specific equipment materials, resolving the contradiction between cleaning power and equipment safety
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 effectively removes pathogens and biofilms from complex medical devices, reducing the risk of infection and environmental impact, while being efficient and easy to apply, without generating heat or causing pathogen mutations, thus enhancing the safety and longevity of medical equipment.
Implementation Method 1
The use of focused acoustic pressure shockwaves or special high-intensity pressure waves, combined with low-frequency ultrasound, provides a non-chemical, energy-efficient method for cleaning and disinfecting medical devices by mechanically dislodging pathogens and biofilms
Implementation Method 2
The focused acoustic pressure shockwaves or special high-intensity pressure waves (planar, pseudo-planar, radial, or unfocused waves) or low-frequency ultrasound produced by the proposed embodiments will have a compressive phase and a tensile phase during one cycle
Data Source
AI summary
A reusable apparatus, such as a medical instrument or tool, is decontaminated by applying pressure waves with direct contact of the pressure wave applicator to the reusable apparatus in an open bath in a sufficient dosage to remove contamination but without adversely affecting the ability to reuse the apparatus.