Patent ID: 9433743
Filing Date: 2016-09-06
CPC Classification: A61M,F16K

Claim Text:
1. A valve comprising: a valve orifice with an adjustable opening; a fixed magnetic field; a force coil configured to be moved within the fixed magnetic field in response to a low frequency current; a current amplifier configured to direct a summed current comprising the low frequency current and a high frequency current into the force coil; a feedback coil configured to detect the high frequency current in the force coil, the detected high frequency current having a magnitude that is proportional to a force coil position within the fixed magnetic field; a processor configured (i) to receive data relating to the position of the force coil and (ii) to send instructions to the current amplifier; and a diaphragm configured to adjust the valve orifice opening based on the position of the force coil.