“Medical hand pieces” are surgical tools to punch and cut human tissue in orthopedic surgeries for hands and feet and shoulder joints and total hip & knee arthroplasty. These hand pieces often cause direct or indirect infection in the operation.(estimated approximately 2.5 % in the US and 5% in Korea) After the first total hip & knee arthroplasty, due to artificial implants, infection and other complications, the rate of disease and mortality in the US is approximately 1.5~2.5% When human transmission happens, there come higher mortality rate, longer hospitalization, higher cost for revision and massive additional cost for post infection control. The cost in the US was $4.5 billion and $6.5 billion. Especially, when the surgeon use single-use hand pieces in orthopedic surgery, since the source of infection to the patient is removed, safer operation, secured safety to the patient, no massive cost by secondary infection and no waste of the national health insurance resources can be obtained. Based on the above reasons, it is requested for single-use hand piece to have similar speed and cutting power to the current reusable hand pieces. Therefore, I am intending to develope single-use cutting hand piece to realizing required speed and cutting power for orthopedic total joint arthroplasty. When the surgery is performed with the hand pieces which are applied the technology of this study, the patient can get relieved from cross infection and SSI(surgical site infection). From the surgeons’ position, since they decrease one of the sources of infection, they can improve usability for surgical tools. It is possible to save their lives and to save additional medical cost, but also reduce additional national & social expenses for insurance. Therefore, it can allow to run flexible budget in health welfare service by reducing revision and lifetime treatment caused by infection.