Patent ID: 11934209
Assignee: ALCON INC.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method of controlling vacuum pressure in a vacuum generation system, the method comprising:
receiving a vacuum pressure sensor reading from a vacuum pressure sensor;
calculating a first error between the vacuum pressure sensor reading and a vacuum pressure set point;
calculating a first voltage level for controlling a proportional valve based on the first error;
receiving a supply air pressure sensor reading from a supply air pressure sensor;
calculating a second error between the supply air pressure sensor reading and a supply air pressure set point;
calculating a second voltage level for controlling a proportional valve based on the second error;
determining a lower of the first and second voltage levels;
providing an input voltage level corresponding to the lower voltage level to the proportional valve;
causing, using the proportional valve, supply air pressure to be provided to a vacuum generator based on the lower voltage level; and
providing, using the vacuum generator, vacuum pressure based on the supply air pressure to a surgical tool.