Abstract: A dispenser for dispensing sheet material from a roll. The roll has a location arrangement for releasably mounting the roll between a spigot and an oppositely facing support element for rotation about a longitudinal axis of the dispenser. The arrangement includes: a core around which the sheet material is wrapped, one end of the core being mounted or mountable relative to the support element, the other end having a wall region defining a generally hollow cylindrical portion projecting from the wrapped material, a generally axial slot being provided in the wall region extending to the free edge thereof; and a fixing provided on the cylindrical portion. The fixing has a bearing surface for rotatably engaging the spigot for rotational movement about the longitudinal axis, and a radial path to the bearing surface, the path being radially aligned with the slot in the core, whereby the end of the core may be laterally engaged with the spigot support element.

Abstract: A mouth prop for insertion in use between the opposed tooth or gum regions of the patient's mandible or maxilla to space the patient's incisors thereapart, the mouth prop having a grippable portion which a clinician can use for assisting in the location and removal of the mouth prop and can be supplied with elements for delivering and/or sampling gases to or in the mouth and/or nasal region of a patient.