Integrated Dialyzer with Maglev Pump Rotor
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Solution Overview
Problem
Current blood treatment systems for renal dysfunction, such as hemodialysis and hemofiltration, are complex and require multiple components, leading to increased setup time, potential for human error, and reduced efficiency.
Innovation Solution
The development of a dialyzer system integrated with a magnetically driven and levitating pump rotor, along with pressure sensor chambers, to simplify setup and enhance blood treatment performance. This system includes a deaeration chamber and a dialysis treatment apparatus with features that consolidate multiple technologies and functionalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate components are used in blood treatment systems, then functional versatility is improved, but device complexity and setup time increase
Solution Approach 1:
The patent combines multiple separate components (dialyzer, pump, deaeration chamber, pressure sensor chambers) into a single integrated dialyzer system. The pump rotor is magnetically coupled to the dialyzer housing, and the deaeration chamber is integrated into the same structure, eliminating the need for separate external components and reducing overall system complexity.
Solution Approach 2:
The integrated dialyzer system performs multiple functions simultaneously: blood filtration through the dialyzer membrane, fluid pumping through the magnetically coupled rotor, air removal through the integrated deaeration chamber, and pressure monitoring through integrated sensor chambers. This multi-functionality reduces the number of separate devices needed.
2Adaptability or versatility
If multiple separate components are used in blood treatment systems, then functional versatility is improved, but setup time increases
Solution Approach 1:
By integrating the pump rotor, deaeration chamber, and pressure sensor chambers into the dialyzer housing, the system reduces the number of assembly steps required during setup. The pre-assembled integrated unit eliminates the need for separate connections and alignments of multiple components.
Solution Approach 2:
The pump rotor and deaeration chamber are pre-integrated into the dialyzer housing during manufacturing, so that during clinical setup, the entire assembly is already configured and ready for use. This preliminary integration of components before clinical deployment significantly reduces setup time.
3Adaptability or versatility
If multiple separate components are used in blood treatment systems, then functional versatility is improved, but potential for human error increases
Solution Approach 1:
The integration of multiple components into a single pre-assembled unit reduces the number of connection points and assembly steps where human errors could occur. Fewer separate components mean fewer opportunities for incorrect assembly, leakage, or improper connection.
4Loss of time
If components are consolidated in the dialyzer housing, then setup time is reduced, but manufacturing complexity increases
Solution Approach 1:
The integrated dialyzer housing is designed with distinct functional zones (pump rotor chamber, deaeration chamber, pressure sensor chambers) that are segmented but integrated within the same structure. This segmentation allows for modular manufacturing techniques while maintaining the benefits of integration.
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 integrated dialyzer and treatment module system reduces setup time, minimizes the risk of human error, and enhances blood treatment performance by consolidating components and simplifying the setup process, while also reducing exposure to foreign surfaces and potential for leaks.
Implementation Method 1
a magnetic field-generating pump drive unit
Implementation Method 2
magnetically driven and magnetically levitating pump rotor
Implementation Method 3
Diffuse mass transport is predominant in hemodialysis (HD)
Implementation Method 4
in hemofiltration (HF) convective mass transport through a membrane is used
Implementation Method 5
pressure sensor chambers with flexible membranous walls against which corresponding pressure transducers of the treatment modules can interface to detect arterial and/or venous pressures
Implementation Method 6
The chamber outlet may be positioned on an opposite side of the spiral-channel outlet in comparison to the dome
Data Source
AI summary
Dialyzer systems can consolidate multiple technologies and functionalities of blood treatment systems in a significantly integrated fashion. For example, this disclosure describes dialyzer systems that include a magnetically driven and magnetically levitating pump rotor integrated into the dialyzer. Such a dialyzer can be used with treatment modules that include a magnetic field-generating pump drive unit. In some embodiments, the dialyzers include pressure sensor chambers with flexible membranes with which corresponding pressure transducers of the treatment modules can interface to detect arterial and/or venous pressures.