A Single-institutional Study to Assess the Time Efficiency and Working Satisfaction Using ANDY(Automatic Needle Destroyer)

"1. ANDY will be provided to medical staffs to be use in removal needles from syringes during 7 days~2. Record the time required for the needle removal procedure by photographing the needle removal procedure during 24 hours/7 days.~ Identify the number of syringes processed by ANDY.~3. After 3rd week, do survey and interview 15 people selected by the convenient sample method. By interviewing, collect information of overall experience after using automated needle processing system, how long their hospital working experience is, and other information or systems the interviewees felt those are necessary."