[Safety-engineered devices to prevent percutaneous injuries: cost-effectiveness analysis on prevention of high-risk exposure].

Objective: To assess the efficiency of the replacement of several medical devices by engineered sharp injury (SI) prevention devices (ESIPDs).

Methods: The cost-effectiveness ratios of the replacement of medical devices in use by ESIPDs were estimated: their purchasing costs and the direct costs of sharp injury care were taken into account; the number of SI avoidable by each ESIPD was estimated from the 252 occupational SI notified by healthcare workers at a 1,300 bed hospital from March 2002 to February 2003. The relationship between ESIPD additional costs and the number of high-risk SI was estimated (SI were classified as high-risk if they met two or more of the following criteria: moderately-deep or deep injury, injury with a device previously inserted in an artery or vein, or with a device exposed to blood).