Abstract: A tracheal tube (40) or laryngeal mask has a sealing cuff (41, 2) with a surface covered by a brush-like material (44, 24) provided by closely-packed fibers (25) between 1 mm and 5 mm in length. The brush-like surface (44, 24) may be provided by coating the surface with an adhesive and using an electrostatic charge to draw fibers (25) to adhere to the adhesive.

Abstract: A tracheal tube (40) or laryngeal mask has a sealing cuff (41, 2) with a surface covered by a brush-like material (44, 24) provided by closely-packed (25) between 1 mm and 5 mm in length. The brush-like surface (44, 24) may be provided by coating the surface with an adhesive and using an electrostatic charge to draw (25) to adhere to the adhesive.

Abstract: An mechanism to provide untethered client side access to copyrighted content in order to maintain the digital rights associated with that particular content and service. This client also provides a mechanism to deliver multiple content items requested via a single transaction and distributed via various distribution points. Also provides a mechanism to dynamically mange key stores and digital rights on permanent and transient access devices. The client also provides ability to add digital content at the time of purchase to third party locker services other than the retailer, and to secure memory devices.

Abstract: A method is described for finding areas of a signal which survive multiple transcodings and signal conversions. Then using these identified areas and associated meta data to insert in real-time hard to detect traceable watermarks in a secure and robust manner. Also a means of extracting the marks from pilfered or suspect digital signal using such information.