Implantable Blood Pump with Percutaneous Rechargeable Battery
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Solution Overview
Problem
Existing blood pump systems for heart failure patients are limited by the need for constant connection to a power source, which restricts mobility and increases the risk of infection due to large surgical pockets and inefficient power transfer methods.
Innovation Solution
A hybrid blood pump system with an implantable housing and percutaneous extension that includes a rechargeable power storage device, allowing for extended operation without external power and reducing infection risk through a compact, redundant power transfer system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection to external power source is maintained, then power supply reliability is improved, but patient mobility is reduced
Solution Approach 1:
The power supply system is segmented into two independent parts: an internal rechargeable battery providing portable power and an external power source providing stationary power. This segmentation allows the patient to move freely when using internal power while maintaining reliability through external recharging capability, thus resolving the contradiction between mobility and power supply reliability.
2Power
If large surgical pocket is created for power transfer, then power transfer capacity is improved, but infection risk is increased
Solution Approach 1:
The power transfer function is extracted from the surgical site by using an implantable battery that can be recharged through the skin or via percutaneous connections. This eliminates the need for large surgical pockets and continuous external power connections, thereby reducing infection risk while maintaining adequate power transfer capacity through the implanted battery system.
3Duration of action of moving object
If internal battery capacity is increased, then operation duration is improved, but device volume is increased
Solution Approach 1:
The power supply system is made dynamic by combining a compact internal battery with periodic recharging from external sources. This dynamic approach allows the internal battery to be optimized for portability rather than maximum capacity, as it can be replenished periodically, thus achieving extended operation duration without requiring a large internal battery volume.
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
Enhances patient mobility and reduces infection risk by providing extended power operation and efficient power transfer, enabling normal activities without constant external connection.
Implementation Method 1
The first implantable housing includes a rechargeable power storage device. The rechargeable power storage device supplies electrical power to the implantable blood pump.
Implementation Method 2
The percutaneous extension is coupled to the rechargeable power storage device and adapted to traverse the skin. The percutaneous extension is configured to releasably connect to an external power supply adapted to provide power for recharging or supplementing the rechargeable power storage device.
Data Source
AI summary
Blood pump systems and methods employ transmission of electrical energy and data over a percutaneous cable. A method of transmitting electrical energy and data over a percutaneous cable includes transmitting electrical energy over a first pair of conductors of a percutaneous cable for use in powering an implantable blood pump. Transmission of electrical energy over the first pair of conductors is discontinued to accommodate data transmission over the first pair of conductors. Transmission of the data over the first pair of conductors is discontinued to accommodate recommencement of transmission of electrical energy over the first pair of conductors for use in powering the implantable blood pump.