Apparatus, method, and system for controlling negative-pressure treatment

An apparatus for providing negative-pressure therapy, the apparatus comprising:

• a negative-pressure source;
• a pressure sensor;
• a control valve;
• a first feedback path configured to pneumatically couple the pressure sensor to a distribution component through the control valve;
• a second feedback path configured to pneumatically couple the pressure sensor to the negative-pressure source through the control valve;
• wherein the control valve is configured to selectively couple the pressure sensor to the first feedback path and to selectively couple the pressure sensor to the second feedback path;
• and
• a controller coupled to the negative-pressure source, the control valve, and the pressure sensor, the controller configured to:
• actuate the control valve;
• sample a signal from the pressure sensor, the signal indicative of pressure measured by the pressure sensor;
• and
• operate the negative-pressure source based on the signal.

A method for controlling negative-pressure treatment, the method comprising:

• sampling a signal from a pressure sensor coupled to a first feedback path through a control valve and indicative of an operating parameter measured by the pressure sensor;
• periodically operating the control valve to couple the pressure sensor to a second feedback path through the control valve and switch the operating parameter measured by the pressure sensor;
• and
• operating a negative-pressure source based on the signal.