Abstract: A sheath (1) is disclosed which is suitable for covering the needle of a syringe (2). The sheath (1) includes a filter (3) which projects partially from the end of the sheath to aid the drawing of liquid into the syringe. It is intended that the needle and/or syringe are sold fitted with the sheath (1) so that there is no need to expose the needle until the user is ready for injection. The invention includes a blister pack (12 FIG. 4) which includes a ready assembled syringe, a mixing pan and paraphernalia for the preparation of the solution to he injected.

Abstract: A support device (1) comprises a first support structure (6) which is conformable to an object to be supported, and a second support structure (2) which has an activated state in which the second support structure substantially locks the first support structure into a conformed shape, and supports tensile loading on the support device, and an inactivated state in which the first support structure is able to conform to an object.

Abstract: An apparatus and method are provided for detecting presence in gas of transient particulate above its normal zero or acceptable level within a duct (4), said apparatus comprising at least one emitter (2) of illumination selected from infra-red, ultraviolet and visible radiation capable of being projected over essentially the entire cross section of the duct (4) and at least one detector (8, 18, 25) for detecting any sparkle of the illumination from the particulate. The apparatus and method are in particular useful for detecting monitoring particulate in areas where build up or presence of particulate can be disadvantageous, for example hospitals and electricity generating stations.

Abstract: An apparatus and method are provided for detecting presence in gas of transient particulate above its normal zero or acceptable level within a duct (4), said apparatus comprising at least one emitter (2) of illumination selected from infra-red, ultraviolet and visible radiation capable of being projected over essentially the entire cross section of the duct (4) and at least one detector (8, 18, 25) for detecting any sparkle of the illumination from the particulate. The apparatus and method are in particular useful for detecting monitoring particulate in areas where build up or presence of particulate can be disadvantageous, for example hospitals and electricity generating stations.

Abstract: A support provides a window for the display of advertising material. The support has a gripping feature on opposing sides for engaging an airline fold-down tray by its side edges. A bottom flange functions as a position limiting device so that the support is correctly positioned onto the tray. The advertising medium is held within a groove between the window and the under surface of the fold-down tray.