Single-Cassette CRRT Platform for Simplified Renal Therapy Setup
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Solution Overview
Problem
Current devices for continuous renal replacement therapy are complex, cumbersome, and require trained medical staff, limiting their use to intensive care environments and interfering with other treatments due to the need for multiple consumables and extensive setup changes.
Innovation Solution
A single cassette system that integrates with a dialysis apparatus to perform various continuous renal replacement therapy techniques, including SCUF, CVVH, CVVHD, CVVHDF, TPE, and hemoperfusion, using three main pumps, a blood filtration means, liquid supply, and a controller to automate treatments without medical staff intervention, allowing for home use and reducing operator errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate devices are used for different renal replacement therapy techniques, then each device can be optimized for its specific function, but the overall system complexity increases and requires multiple consumables and extensive setup changes
Solution Approach 1:
The patent implements a single dialysis apparatus with a unified cassette system that can perform multiple renal replacement therapy techniques (hemodialysis, hemofiltration, hemodiafiltration, plasma exchange) through a single integrated platform. The cassette contains universal flow paths and chambers that can be configured for different treatments, eliminating the need for multiple separate devices and reducing overall system complexity.
Solution Approach 2:
The dialysis apparatus is segmented into modular components: a reusable main apparatus body and a disposable cassette containing flow paths, chambers, and filters. This segmentation allows the complex therapy-specific components to be contained within the replaceable cassette, simplifying the main apparatus while maintaining versatility through cassette interchangeability or reconfiguration.
2Reliability
If trained medical staff are required to operate the therapy devices, then treatment accuracy and safety are improved, but the ease of operation decreases and limits use to intensive care environments
Solution Approach 1:
The dialysis apparatus incorporates automated control systems that manage fluid delivery, filtration, and treatment parameters without requiring constant manual intervention. The system can automatically monitor and adjust treatment conditions, reducing the skill level required for operation while maintaining treatment reliability and safety.
Solution Approach 2:
The apparatus includes monitoring and feedback mechanisms that track treatment parameters and provide real-time information about system status and patient condition. This automated feedback system helps ensure treatment accuracy and safety while simplifying operator tasks by providing clear status information and automatic adjustments.
3Adaptability or versatility
If extensive setup changes and multiple consumables are required, then each treatment can be precisely configured, but the loss of time for setup and configuration increases
Solution Approach 1:
The cassette is pre-configured with integrated flow paths, chambers, and filtration components specific to each treatment type before use. This preliminary preparation allows for rapid treatment initiation without extensive setup time, as the configuration is already in place within the disposable cassette unit.
Solution Approach 2:
The unified cassette design incorporates multiple flow paths and chambers that can serve different treatment functions within a single unit. This universality allows the system to switch between different renal replacement therapies without requiring complete setup changes, reducing configuration time while maintaining treatment-specific precision.
4Adaptability or versatility
If cumbersome appliances are used for renal replacement therapy, then comprehensive treatment functions are achieved, but the ease of operation decreases and interferes with other treatments
Solution Approach 1:
The patent merges multiple treatment functions (dialysis, filtration, plasma exchange) into a single integrated dialysis apparatus with a unified cassette system. This consolidation maintains comprehensive treatment capabilities while reducing the physical footprint and number of separate appliances, making the system less cumbersome and more compatible with other patient treatments.
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 system simplifies treatment procedures, reduces operator errors, automates processes, and allows for use outside intensive care settings, enabling patients to receive comprehensive renal replacement therapy without the need for extensive medical supervision.
Implementation Method 1
Diffusion allows solute molecules to pass through a semipermeable membrane according to a concentration gradient. The solutes pass from the more concentrated medium (the blood) to the less concentrated medium (the dialysate)
Implementation Method 2
Convection permits the simultaneous transfer of water and of its solute content through the semipermeable membrane by virtue of the hydrostatic pressure gradient across the membrane
Data Source
AI summary
The invention relates to a system for treating blood, which includes a single cassette capable of carrying out the various CRRT treatments.