Rotor Sensor Integration for Blood Pump Performance Monitoring
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Solution Overview
Problem
Current blood pumps lack effective measurement of flow forces and turbulence, making it difficult to assess pump performance, detect clots, rotor condition, and predict service life.
Innovation Solution
Incorporating sensors on the rotor to detect physiological, physical, and flow parameters, with energy self-sufficiency and wireless energy transfer, allowing for precise monitoring and operation without external wiring, enhancing sensitivity and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are integrated on the rotor to detect flow parameters and turbulence, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensing functions (flow, pressure, temperature, turbulence detection) into a single integrated rotor assembly. The sensor system is merged with the rotor structure itself, allowing the rotor to serve both as a pumping element and as a platform for multiple measurement functions, thereby improving measurement precision while managing device complexity through functional integration
Solution Approach 2:
The rotor is designed as a multi-functional component that simultaneously performs pumping action and hosts multiple sensors for detecting various parameters including flow rate, pressure, temperature, and turbulence. This universal design allows a single component to fulfill multiple roles, addressing the need for comprehensive flow parameter measurement without proportionally increasing overall device complexity
2Ease of operation
If wireless energy transfer is implemented for rotor sensor power supply, then ease of operation is improved, but use of energy increases
Solution Approach 1:
The patent replaces mechanical wiring connections with wireless energy transfer technology to power the rotor sensors. This substitution eliminates the need for physical wire connections that would complicate the moving rotor assembly, thereby improving ease of operation and reliability while accepting increased energy consumption as a trade-off for achieving wireless power delivery
3Reliability
If multiple sensors are placed on the rotor to detect physiological and physical parameters, then reliability is improved, but device complexity increases
Solution Approach 1:
Multiple sensing functions for detecting different physiological and physical parameters are merged into a single integrated sensor system on the rotor. This consolidation approach improves reliability by providing comprehensive monitoring capabilities while managing complexity through unified sensor architecture rather than separate discrete sensor assemblies
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
Improves the ability to measure and predict pump performance, detect clots, and estimate rotor condition and service life, leading to more precise control and extended pump lifespan.
Implementation Method 1
the rotor (9) comprises a rotor coil and the pump casing (12) and the rotor coil are designed in such a way that a voltage can be induced in the rotor coil given a rotation of the rotor
Implementation Method 2
a voltage can be induced in the rotor coil given a rotation of the rotor
Data Source
AI summary
A pump is provided for conveying body fluids, in particular blood, wherein the pump has a pump housing and a rotor mounted in the pump housing. The rotor comprises at least one sensor for detecting flow and/or movement parameters. Also provided is a method for operating the pump.