System and method for reduced pressure charging

1. A reduced pressure treatment system comprising:

a compressible bladder positioned beneath a foot of a user, the compressible bladder having a chamber substantially enclosed by a chamber wall, the compressible bladder being movable between an expanded position and a compressed position to generate a reduced pressure;

a resilient member operatively associated with the chamber wall to bias the compressible bladder toward the expanded position;

a manifold positioned at a tissue site of the user and in fluid communication with the chamber of the compressible bladder; and

a pressure regulator fluidly connected between the chamber and the manifold to regulate the reduced pressure delivered to the tissue site.

2. The system of claim 1 , further comprising:

a canister fluidly connected between the chamber and the manifold to collect exudate from the tissue site.

3. The system of claim 1 , wherein the compressible bladder generates the reduced pressure within the chamber as the compressible bladder expands toward the expanded position.

4. The system of claim 1 , wherein the biasing member is disposed within the chamber.

5. The system of claim 1 , wherein the biasing member is an open-cell foam.

6. The system of claim 1 , wherein the biasing member is disposed outside of the chamber.

7. The system of claim 1 , further comprising:

a second compressible bladder positioned beneath the foot of the user, the second compressible bladder having a second chamber substantially enclosed by a second chamber wall, the second compressible bladder being movable between an expanded position and a compressed position to generate a second reduced pressure;

a second biasing member operatively associated with the second chamber wall to bias the second compressible bladder toward the expanded position;

wherein the second chamber of the second compressible bladder is in fluid communication with the manifold; and

wherein the first compressible bladder is positioned beneath a forefoot region of the foot and the second compressible bladder is positioned beneath a heel region of the foot.

8. A reduced pressure treatment system comprising:

a compressible chamber positionable beneath a foot of a user and being movable between an expanded position and a compressed position, the compressible chamber having an inlet and an outlet;

an inlet valve in fluid communication with the inlet to prevent fluid within the compressible chamber from exiting the inlet;

an outlet valve in fluid communication with the outlet to prevent fluid from entering the compressible chamber through the outlet;

a biasing member disposed within the compressible chamber to bias the compressible chamber toward the expanded position;

a manifold positionable at a tissue site and in fluid communication with the inlet of the compressible chamber; and

a pressure regulator fluidly connected between the inlet of the compressible chamber and the manifold to regulate a reduced pressure delivered to the tissue site.

9. The system of claim 8 , further comprising:

a canister fluidly connected between the inlet of the compressible chamber and the manifold to collect exudate from the tissue site.

10. The system of claim 8 , wherein the compressible chamber is a bladder.

11. The system of claim 8 , wherein the compressible chamber generates the reduced pressure as the compressible chamber expands toward the expanded position.

12. The system claim 8 , wherein the biasing member is an open-cell foam.

13. The system of claim 8 , further comprising:

a second compressible chamber positionable beneath the foot of the user and being movable between an expanded position and a compressed position, the second compressible chamber having a second inlet and a second outlet;

a second inlet valve in fluid communication with the second inlet to prevent fluid within the second compressible chamber from exiting the second inlet;

a second outlet valve in fluid communication with the second outlet to prevent fluid from entering the second compressible chamber through the second outlet;

a second biasing member disposed within the second compressible chamber to bias the second compressible chamber toward the expanded position;

wherein the second compressible chamber is in fluid communication with the manifold; and

wherein the first compressible chamber is positioned beneath a forefoot region of the foot and the second compressible chamber is positioned beneath a heel region of the foot.

14. A reduced pressure treatment system comprising:

a compressible bladder positionable beneath a foot of a user, the compressible bladder having a chamber and being movable between an expanded position and a compressed position,

a biasing member disposed within the chamber to bias the compressible bladder toward the expanded position;

a pressure regulator having a first variable-volume cavity and a second variable-volume cavity, the first variable-volume cavity being fluidly connected to the chamber of the compressible bladder; and

a manifold positionable at a tissue site and in fluid communication with the second variable-volume cavity of the pressure regulator.

15. The system of claim 14 , wherein the first variable-volume cavity is configured to expand as the first variable-volume cavity receives positively pressured air from the chamber.

16. The system of claim 14 , wherein the second variable-volume cavity is configured to expand and generate a reduced pressure as the first variable-volume cavity expands.

17. The system of claim 14 , wherein:

the first variable-volume cavity is configured to expand as the first variable-volume cavity receives positively pressured air from the chamber; and

the second variable-volume cavity is configured to expand and generate a reduced pressure as the first variable-volume cavity expands.

18. The system of claim 14 , wherein the pressure regulator includes a bellows device.

19. The system of claim 14 , wherein the chamber includes an inlet and an outlet and the system further comprises:

an inlet valve in fluid communication with the inlet to prevent fluid exiting the chamber from passing through the inlet; and

an outlet valve in fluid communication with the outlet to prevent fluid from entering the chamber through the outlet.

20. The system of claim 14 , further comprising:

a canister fluidly connected between the second variable-volume cavity and the manifold to collect exudate from the tissue site.

21. The system claim 14 , wherein the biasing member is an open-cell foam.

22. The system of claim 14 , further comprising:

a second compressible bladder positionable beneath the foot of the user, the second compressible bladder having a second chamber and being movable between an expanded position and a compressed position;

a second biasing member disposed within the second chamber to bias the second compressible bladder toward the expanded position;

wherein the second chamber of the second compressible bladder is in fluid communication with the first variable-volume cavity; and

wherein the first compressible bladder is positioned beneath a forefoot region of the foot and the second compressible bladder is positioned beneath a heel region of the foot.

23. A reduced pressure treatment system comprising:

a compressible bladder positioned beneath a foot of a user, the compressible bladder having a chamber substantially enclosed by a chamber wall, the compressible bladder being movable between an expanded position and a compressed position to generate a reduced pressure;

a resilient member operatively associated with the chamber wall to bias the compressible bladder toward the expanded position;

a manifold positioned at a tissue site of the user and in fluid communication with the chamber of the compressible bladder; and

a second compressible bladder positioned beneath the foot of the user, the second compressible bladder having a second chamber substantially enclosed by a second camber wall, the second compressible bladder being movable between an expanded position and a compressed position to generate a second reduced pressure;

a second biasing member operatively associated with the second chamber wall to bias the second compressible bladder toward the expanded position;

wherein the second chamber of the second compressible bladder is in fluid communication with the manifold; and

wherein the first compressible bladder is positioned beneath a forefoot region of the foot and the second compressible bladder is positioned beneath a heel region of the foot.

24. A reduced pressure treatment system comprising:

a compressible chamber positionable beneath a foot of a user and being movable between an expanded position and a compressed position, the compressible chamber having an inlet and an outlet;

an inlet valve in fluid communication with the inlet to prevent fluid within the compressible chamber from exiting the inlet;

an outlet valve in fluid communication with the outlet to prevent fluid from entering the compressible chamber through the outlet;

a biasing member disposed within the compressible chamber to bias the compressible chamber toward the expanded position;

a manifold positionable at a tissue site and in fluid communication with the inlet of the compressible chamber; and

a second compressible chamber positionable beneath the foot of the user and being movable between an expanded position and a compressed position, the second compressible chamber having a second inlet and a second outlet;

a second inlet valve in fluid communication with the second inlet to prevent fluid within the second compressible chamber from exiting the second inlet;

a second outlet valve in fluid communication with the second outlet to prevent fluid from entering the second compressible chamber through the second outlet;

a second biasing member disposed within the second compressible chamber to bias the second compressible chamber toward the expanded position;

wherein the second compressible chamber is in fluid communication with the manifold; and

wherein the first compressible chamber is positioned beneath a forefoot region of the foot and the second compressible chamber is positioned beneath a heel region of the foot.