Pressure control apparatus

A method of providing wound therapy, the method comprising:

• supporting, by a housing, a controller, a pressure source, a power source, a plurality of visual indicators, and a button or a switch,
• receiving a first user input by the button or the switch;
• in response to receiving the first user input, activating, by the controller, a pressure source to attempt to generate a first level of negative pressure under a wound dressing positioned over a wound;
• absorbing wound exudate with the wound dressing;
• measuring pressure in a fluid flow path connecting the pressure source and the wound dressing;
• maintaining, by the controller, negative pressure under the wound dressing in a negative pressure range by repeatedly deactivating and activating the pressure source;
• receiving a second user input by the button or the switch;
• in response to receiving the second user input, deactivating, by the controller, the pressure source;
• powering the pressure source by the power source;
• and
• separately indicating, by the plurality of visual indicators, a normal operating condition associated with the fluid flow path, a leak condition associated with the fluid flow path, a remaining capacity or life of the power source, and an end of life state in which the pressure source is permanently deactivated,
• wherein the method is performed without using a fluid collection canister.

A wound therapy apparatus comprising:

• a pressure source configured to be in fluid communication with a wound dressing via a fluid flow path;
• a power source configured to power the pressure source;
• a pressure sensor configured to measure pressure in the fluid flow path;
• a button or a switch configured to receive user inputs from a user;
• a plurality of visual indicators;
• a controller configured to:
• responsive to a first user input of the user inputs, activate the pressure source to attempt to generate a first level of negative pressure under the wound dressing,
• responsive to a second user input of the user inputs, deactivate the pressure source, and
• with the plurality of visual indicators, separately indicate (i) a normal operating condition, (ii) a leak condition, (iii) that a remaining capacity or life of the power source has reached a threshold, and (iv) an end of life state in which the pressure source is permanently deactivated;
• and
• a housing configured to support the pressure source, the power source, the pressure sensor, the plurality of visual indicators, the controller, and the button or the switch,
• wherein the controller, the pressure source, and the wound dressing are configured to operate together to provide negative pressure wound therapy without use of a fluid collection canister.