A cutting point calculation step defines the cell complex that contains the boundary data, and calculating a cutting point where the boundary data cuts an edge or vertex of the rectangular parallelepiped cell of the cell complex. A damper mechanism is secured to one of the rails and can be connected to and disconnected from the other of the rails to provide a damping effect for relative movement of the rails during at least a part of the movement thereof. The coordinates are applied to an address conversion calculation unit for calculating a linear memory address corresponding to the pixel coordinates and the data representative of the pixel is stored in the system memory at the calculated address. The aqueous solution may be a superheated fluid, a supercritical fluid, a high-velocity superheated fluid or a high-velocity supercritical fluid. Opening of one or more offtakes opens the system to atmospheric pressure and causes the direction of fluid flow to reverse in one or more hoses that connect the one or more opened offtakes with the return manifold. The coated collagen carrier may be used as a ready-to-use absorbable composition for tissue gluing, tissue sealing and haemostasis wherein the carrier is coated with solidly fixed components of fibrin glue, i.