The present application describes a device (100 figure 1a) for unblocking the outlet of a tube cartridge. The device comprises an elongate body portion (102 figure 1a) having at least one inlet 122 located between a first end region (106 figure 1a) and a second end region (110 figure 1a). The at least one outlet 116 is proximal the second end region. There is a bore 114 extending from the least one inlet to the at least one outlet. The inlets may be oriented perpendicularly to the longitudinal axis of the body portion and space along that axis in diametrically opposed pairs. The second end portion may comprise a point 112.
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