Final answer:
Sharps with engineered sharps injury protection are designed to prevent needlestick injuries. Both a needle with a safety feature that covers it after use and a scalpel with a retractable blade meet the OSHA definition of a sharp with ESIP. A syringe with a needle guard also qualifies, while a suture needle with a blunt tip does not.
Step-by-step explanation:
The revised OSHA definition of a sharp with engineered sharps injury protection (ESIP) refers to devices that are specifically designed to reduce the risk of needlestick injuries. Among the options listed, both a needle with a safety feature that covers the needle after use and a scalpel with a retractable blade meet the definition of sharps with engineered sharps injury protection. These devices have built-in safety mechanisms that either cover, retract, or otherwise shield the sharp edge or point after the device is used. This helps in preventing accidental injuries that could lead to bloodborne pathogen transmission.
A suture needle with a blunt tip is designed to minimize tissue trauma but does not have a mechanism to prevent injury after use. A syringe with a needle guard is another form of ESIP, as the guard can provide a barrier between the sharp and the handler. It's important to note that such engineered safety devices are part of a broader approach to reduce needlestick injuries, which also includes proper handling techniques and disposal practices.