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An electromagnetically controllable heart valve suitable for chronic implantation
1Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson 39216-4505.
ASAIO Transactions
|July 1, 1990
Summary
This study presents a novel controllable valve for chronic implantation, featuring magnetic control for adjustable opening and closing. The design shows feasibility for use in animal models and prosthetic blood pumping devices.
Area of Science:
- Biomedical Engineering
- Medical Devices
- Cardiovascular Technology
Background:
- Chronic implantation of medical devices requires precise control mechanisms.
- Existing prosthetic valves may lack adjustable functionality.
- Magnetic actuation offers a potential solution for controllable valve operation.
Purpose of the Study:
- To design and test a magnetically controllable valve for chronic implantation.
- To evaluate the valve's performance under simulated physiological conditions.
- To assess the feasibility of this technology for future biomedical applications.
Main Methods:
- Modification of a Björk-Shiley monostrut valve with integrated permanent magnets and an external electromagnet.
- Control of valve disk movement via magnetic field interactions.
- Performance testing under hydrostatic pressure up to 50 mmHg.
Main Results:
- The designed valve demonstrated controllable opening and closing via magnetic fields.
- The prototype successfully held a hydrostatic pressure of 50 mmHg.
- Power consumption was below 10 watts, with an overall diameter of 27 mm.
Conclusions:
- A magnetically controlled valve suitable for chronic implantation is feasible.
- The technology shows promise for applications in experimental animals.
- Potential applications include prosthetic blood pumping devices.