Construction and protection of components in negative pressure wound therapy systems

An apparatus for applying negative pressure to a wound, the apparatus comprising:

• a housing;
• a negative pressure source supported by the housing and configured to provide negative pressure via a fluid flow path to a wound dressing;
• a first circuit board supported by the housing and comprising an edge;
• a second circuit board configured to radiate and detect electromagnetic waves from a side of the second circuit board, the second circuit board being mechanically mounted to the first circuit board and positioned proximate to and extending along the edge of the first circuit board, the second circuit board being electrically connected to the first circuit board and configured to wirelessly communicate with an electronic device via the electromagnetic waves, the side of the second circuit board being oriented in the housing to face toward a side of the housing that is configured to support a canister so that the electromagnetic waves radiated from the side of the second circuit board are transmitted toward the side of the housing that is configured to support the canister, the canister being configured to be positioned in the fluid flow path and collect fluid removed from the wound dressing;
• and
• one or more controllers configured to:
• activate and deactivate the negative pressure source, and
• transmit first data to the electronic device using the electromagnetic waves radiated from the side of the second circuit board or receive second data from the electronic device using the electromagnetic waves detected from the side of the second circuit board.