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Single-bladder cuffs intended for a single-use (i.e., disposable) including an inflatable bladder 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 one bladder within the cuff that is inflated through tubes (e.g., hoses) that run from the bladder 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 providing also more comfort to patients. Disposable single-bladder contoured 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 with components (e.g., bladder) that cannot be replaced. Single-bladder contoured cuffs are used mainly during surgical procedures in the extremities for patients who are obese or extremely muscular thus enabling surgeons to perform delicate procedures in bloodless operative fields. Contoured single-bladder cuffs (both reusable and disposable) intended for use on specific extremity areas (e.g., arm, thigh) are also available.
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