Multiple dressing negative pressure wound therapy system

A negative pressure therapy apparatus comprising:

• a negative pressure source configured to couple via a plurality of fluid flow paths to a plurality of wound dressings and provide negative pressure to the plurality of wound dressings, the plurality of fluid flow paths comprising:
• a first fluid flow path configured to fluidically connect a first wound dressing to the negative pressure source, the first fluid flow path including a first valve, wherein when open the first valve allows passage of fluid through the first fluid flow path, and wherein when closed the first valve blocks passage of fluid through the first fluid flow path, and
• a second fluid flow path configured to fluidically connect a second wound dressing to the negative pressure source, the second fluid flow path including a second valve, wherein when open the second valve allows passage of fluid through the second fluid flow path, and wherein when closed the second valve blocks passage of fluid through the second fluid flow path;
• a pressure sensor configured to measure a combined pressure in the plurality of fluid flow paths;
• and
• a controller configured to operate the negative pressure source and further configured to:
• based on a determination that a first pressure data received from the pressure sensor satisfies a first blockage threshold, determine that the plurality of fluid flow paths includes a fluid flow path associated with a blockage condition, and
• based at least in part on a second pressure data received from the pressure sensor, identify at least one fluid flow path of the plurality of fluid flow paths that is associated with the blockage condition, wherein the second pressure data is measured when at least one of the first valve or the second valve is closed.