Surface-Coated Conductor Tracks on Intravascular Blood Pump Cannula
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Solution Overview
Problem
Existing intravascular blood pumps face challenges in integrating active electronic components or sensors due to difficulties in miniaturizing electrical connections while maintaining reliability and biocompatibility.
Innovation Solution
The intravascular blood pump incorporates surface-coated electrical conductor tracks on the flow cannula, allowing for thin, space-saving, and reliable electrical connections to sensors and evaluation electronics, even in minimally invasive designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If wall thicknesses are reduced to minimum to achieve small dimensions, then the size of the blood pump is reduced, but the integration of active electronic components or sensors with suitable connections becomes difficult
Solution Approach 1:
The patent transitions from volumetric conductor traces to surface-based conductor tracks on the flow cannula exterior. This dimensional shift allows electrical connections to be made on the surface rather than requiring internal space, enabling electronic component integration in the minimized pump structure without compromising manufacturability or reliability
Solution Approach 2:
The flow cannula serves as an intermediary carrier for the conductor tracks, which in turn connect electronic components to the external power supply. This mediator approach allows thin-walled construction while maintaining reliable electrical connections through the cannula's surface coating structure
2Reliability
If conventional electrical connections are used in miniaturized pumps, then electrical components can be connected, but the thickness of electrical connecting lines cannot be reduced sufficiently
Solution Approach 1:
The conductor tracks are implemented as thin film structures deposited on the flow cannula surface. This thin-film approach reduces the thickness of electrical connections to minimal dimensions while maintaining electrical conductivity and reliability, enabling integration in the thin-walled pump structure
Solution Approach 2:
By moving conductor traces from internal volumetric paths to external surface paths on the flow cannula, the patent eliminates the need for thick internal wiring. The surface-based conductor tracks achieve reliable electrical connections with minimal thickness, solving the contradiction between connection reliability and miniaturization
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 solution enables the efficient operation of sensors and electronic components within the blood pump, reducing the thickness of electrical connections and allowing for more compact and reliable systems while maintaining biocompatibility.
Implementation Method 1
at least one electrical conductor track is provided by a surface coating structure at least in the region of the flow cannula
Data Source
AI summary
An intravascular blood pump (100) comprises a tip (110), a first region (120) with at least one blood through-opening (121), a flow cannula (130), a second region (140) with at least one blood through-opening (141), a motor-operated pump mechanism (150) and a conducting cable (170). At least in the region of the flow cannula (130), at least one electrical conductor track is realized by a surface coating structure.