#$%^&*AU2014277849A120150226.pdf#####Abstract The present invention relates to the methods and devices for treatment of damaged tissue. The invention utilises a mechanically chargeable reduced pressure therapy device, comprising: a chamber with a spring retainer therein a sliding seal residing in the chamber and configured to form a sliding seal with the chamber, the sliding seal comprising a central opening two springs with opposing positions and acting on different regions of the sliding seal a rod member configured to push the sliding seal in the suction chamber and a valve configured to selectively permit fluid communication with the chamber.