New multi-sensor stethoscope improves heart valve disease detection, ... VHD occurs when one or more of the heart's four valves don't open or close properly, leading to blood flow issues.

The sensor signal then cancels the solenoid signal when the spool reaches the specified position. ... The valves control flow or pressure, or actuator position, velocity, ...

Heart valves made in minutes control blood flow immediately after being implanted into sheep. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2023 / 06 / 230607123521.htm ...