A speculum is provided, comprising two or more blades moveable between an open and a closed position. A tubular sheath is attached to at least one of the blades, the sheath being arranged to retain the lateral walls of the body cavity when the blades are in the open position. Sheath attachment means provided on one of the speculum blades facilitate attachment of the sheath to the blade, the attachment means comprising at least one patch or strip of adhesive material extending in a longitudinal direction of the blade.
