A manually-actuated, reduced-pressure system for treating a wound on a patient, the system comprising: a manifold member, having a first side and a second, patient-facing side, the manifold operable to distribute a reduced pressure; a sealing member operable to provide a fluid seal over the manifold member and a portion of the patient; a reduced-pressure delivery member operable to receive and transmit a reduced pressure, the reduced-pressure delivery member having a first end and a second end; a reduced-pressure interface fluidly coupled to the second end of the reduced-pressure delivery member and operable to receive reduced pressure from the reduced-pressure delivery member and transmit the reduced pressure to the manifold member; and a manually-actuated, constant reduced-pressure soured for generating a constant reduced pressure, the manually-actuated constant reduced-pressure source comprising: a reduced-pressure port, the reduced-pressure port fluidly coupled to the first end of the reduced-pressure delivery member; a constant-force biasing member; a carrier member; a slider member slidably coupled to the carrier member; a flexible, collapsible member having a first end and a second end and having an interior space, and the first end associated with the carrier member and the second end associated with the slider member; wherein the carrier member, constant-force biasing member, slider member, and flexible, collapsible member are sized and configured to allow movement between a compressed position and an expanded position; an evacuation port operable to allow air or other gases to exit the interior space of the flexible, collapsible member; and wherein the constant-force biasing member comprises a first constant-force coil spring operable to urge the carrier member and slider member away from each other between the compressed and extended positions. a manifold member, having a first side and a second, patient-facing side, the manifold operable to distribute a reduced pressure; a sealing member operable to provide a fluid seal over the manifold member and a portion of the patient; a reduced-pressure delivery member operable to receive and transmit a reduced pressure, the reduced-pressure delivery member having a first end and a second end; a reduced-pressure interface fluidly coupled to the second end of the reduced-pressure delivery member and operable to receive reduced pressure from the reduced-pressure delivery member and transmit the reduced pressure to the manifold member; and a manually-actuated, constant reduced-pressure soured for generating a constant reduced pressure, the manually-actuated constant reduced-pressure source comprising: a reduced-pressure port, the reduced-pressure port fluidly coupled to the first end of the reduced-pressure delivery member; a constant-force biasing member; a carrier member; a slider member slidably coupled to the carrier member; a flexible, collapsible member having a first end and a second end and having an interior space, and the first end associated with the carrier member and the second end associated with the slider member; wherein the carrier member, constant-force biasing member, slider member, and flexible, collapsible member are sized and configured to allow movement between a compressed position and an expanded position; an evacuation port operable to allow air or other gases to exit the interior space of the flexible, collapsible member; and wherein the constant-force biasing member comprises a first constant-force coil spring operable to urge the carrier member and slider member away from each other between the compressed and extended positions. a reduced-pressure port, the reduced-pressure port fluidly coupled to the first end of the reduced-pressure delivery member; a constant-force biasing member; a carrier member; a slider member slidably coupled to the carrier member; a flexible, collapsible member having a first end and a second end and having an interior space, and the first end associated with the carrier member and the second end associated with the slider member; wherein the carrier member, constant-force biasing member, slider member, and flexible, collapsible member are sized and configured to allow movement between a compressed position and an expanded position; an evacuation port operable to allow air or other gases to exit the interior space of the flexible, collapsible member; and wherein the constant-force biasing member comprises a first constant-force coil spring operable to urge the carrier member and slider member away from each other between the compressed and extended positions.