Systems and methods for monitoring operational lifetime of negative pressure wound treatment apparatuses

A method of operating a negative pressure wound therapy system, the method comprising:

• by an electronic processing circuitry of the negative pressure wound therapy system:
• providing negative pressure therapy by a source of negative pressure to a wound covered by a wound dressing;
• periodically storing a plurality of data sets at a plurality of memory locations in the memory associated with a plurality of memory addresses by storing a first data set of the plurality of data sets at a first memory location of the plurality of memory locations associated with a first memory address of the plurality of memory addresses and subsequently storing a second data set of the plurality of data sets at a second memory location of the plurality of memory locations associated with a second memory address of the plurality of memory addresses;
• determining that a total permitted operational time for providing negative pressure has been reached in response to:
• storing a most recent data set of the plurality of data sets, and
• determining that a third memory address of the plurality of memory addresses that is associated with a third memory location of the plurality of memory locations that stores the most recent data set corresponds to a memory address indicative of a duration of time following an initial activation of the electronic processing circuitry reaching the total permitted operational time for providing negative pressure therapy;
• and
• in response to determining that the total permitted operational time for providing negative pressure therapy has been reached, providing an indication that comprises permanently disabling provision of negative pressure therapy by the source of negative pressure.