Ventricular Assist Blood Pump Controller Segmentation
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Solution Overview
Problem
Conventional ventricular assist systems and blood pump controllers are bulky and heavy due to the large size and weight of the cool sealing liquid pump and reservoir, making them cumbersome for users with heart failure to carry, especially when portability is required.
Innovation Solution
A ventricular assist system with a separable blood pump controller configuration, where the second sub-controller includes a battery, blood pump drive circuit, and a smaller cool sealing liquid reservoir, allowing users to carry only the lightweight second sub-controller while the first sub-controller with the larger reservoir remains stationary, and the use of dynamic pressure grooves and pressure applying means to enhance cool sealing liquid supply efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large capacity cool sealing liquid reservoir and high-power cool sealing liquid pump are used to ensure sufficient liquid supply ability, then the reliability of cool sealing liquid supply is improved, but the weight and volume of the blood pump controller increase significantly
Solution Approach 1:
The blood pump controller is divided into two separable sub-controllers: a first sub-controller containing the large-capacity cool sealing liquid reservoir and high-power pump for reliable liquid supply, and a second sub-controller containing the blood pump drive circuit and battery for portability. Users can carry only the lightweight second sub-controller while the first sub-controller remains stationary, thus maintaining supply reliability while reducing the weight of the portable unit.
Solution Approach 2:
The heavy and bulky components (large reservoir and high-power pump) are extracted from the portable blood pump controller and placed in a separate stationary first sub-controller. This extraction allows the second sub-controller to be lightweight and portable while the stationary first sub-controller provides the necessary liquid supply capacity and power.
2Duration of action of moving object
If a large capacity cool sealing liquid reservoir is used to ensure continuous operation, then the duration of action is improved, but the volume of the blood pump controller increases
Solution Approach 1:
The system is segmented into a stationary first sub-controller housing the large-capacity reservoir for extended operation duration, and a portable second sub-controller for mobility. This segmentation allows the large reservoir volume to be located in the stationary unit, keeping the portable unit compact while ensuring continuous operation capability.
3Power
If a high-power cool sealing liquid pump is used to increase supply pressure, then the power of liquid supply is improved, but the weight and volume of the blood pump controller increase
Solution Approach 1:
The high-power cool sealing liquid pump is located in the stationary first sub-controller rather than the portable second sub-controller. This segmentation allows the pump to provide high supply pressure when needed while keeping the portable controller lightweight and compact for user mobility.
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 configuration reduces the burden on the user by enabling high portability of the blood pump controller while maintaining continuous operation of the blood pump, ensuring safe and hygienic operation by preventing foreign substance intrusion and leakage, and efficiently supplying cool sealing liquid to the blood pump.
Implementation Method 1
the cool sealing liquid L1 is supplied to a gap 954 formed between the first slide surface 911 and the second slide surface 921 from the cool sealing liquid flow chamber 950a
Implementation Method 2
the cool sealing liquid L1 is used for cooling and lubricating the shaft 924 and the fixed portion 910
Implementation Method 3
a so-called centrifugal type blood pump which supplies blood into a body of a user using a centrifugal force generated by the rotation of an impeller
Data Source
AI summary
A ventricular assist system and a blood pump controller including a blood pump usable in a state where a first slide surface and a second slide surface are brought into contact with each other, and a cool sealing liquid is supplied to a gap formed between the first slide surface and the second slide surface; a first sub controller having a first cool sealing liquid reservoir, a cool sealing liquid pump, a first pipe joint upstream side, and a fourth pipe joint downstream side; and a second sub controller having a blood pump drive circuit, a battery, a first pipe joint downstream side, a second pipe joint upstream side, a third pipe joint downstream side, and a fourth pipe joint upstream side. The first sub controller and the second sub controller are detachably connected by a first pipe joint and a fourth pipe joint.