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Double-bladder cuffs intended for a single-use (i.e., disposable) including two inflatable bladders and a contoured cuff that has a smaller diameter distally than proximally when wrapped; the cuffs are designed to exert a pressure on the circumference of an extremity by means of a compressed gas delivered by a pneumatic tourniquet. These devices usually include two bladders within the cuff that are inflated through tubes (e.g., hoses) that run from the bladders\' connectors to the source of compressed air located in the control unit of the tourniquet. The cuff is fastened to the extremity using contact mechanisms (e.g., clips) and frequently secured with an external ribbon. Contoured cuffs have an arced design to give them the smaller distal diameter when wrapped; some cuffs include pivoting fastening straps to allow adjustment of both distal and proximal diameters to suit the limb which also provides more comfort to patients. The cuffs are usually supplied sterile in individual pouches for only one use and are not intended for sterilization processes at the healthcare facility; they are usually made as an integral unit in which components (e.g., bladder) cannot be replaced. Disposable double-bladder contoured cuffs are used mainly during surgical procedures in the extremities for patients that are obese or extremely muscular enabling surgeons to perform delicate procedures in bloodless operative fields. Disposable contoured double-bladder cuffs intended for use on specific extremity areas (e.g., arm, thigh) are also available.
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