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여수정 ( Su Jung Yeo ),정지현 ( Jee Hyun Chung ),김영곤 ( Young Kon Kim ),구성태 ( Sung Tae Koo ),이민규 ( Min Kyu Lee ),임사비나 ( Sabina Lim ) 경락경혈학회 2014 Korean Journal of Acupuncture Vol.31 No.3
Objectives : Warm needling is the method combining the effects of acupuncture and moxibustion. In modern clinics, warm needling is only affected by treatment time or frequency. We need to study the physical characteristics of warm needles currently used in clinics in order to develop more efficient and economical treatments. Methods : We collected various warm needle specimens and analyzed chemical constitutions, measured heat transfer velocity, micro Vicker`s hardness and specific resistance. We studied the relationship between heat transfer velocity and micro Vicker`s hardness as well as that between heat transfer velocity and specific resistance. Results : The heat transfer velocity of the Silver_HL was 3.3 mm/sec, of the Au alloy group was 1.3∼2.6 mm/sec, and Silver_IN, Silver_ZK and SS groups was less than 0.3 mm/sec. We therefore concluded that the needle composed of Ag has the best heat transfer velocity. In the Micro Vicker`s hardness test, Vicker`s hardness of the Au alloy group was 159∼170 Hv, of Silver_HL was 181 Hv, and of the Silver_IN, Silver_ZK, SS group was 450.8∼519 Hv. In the Silver_IN, Silver_ZK and SS groups, hardness was inversely proportial to thermal conductivity. In the specific resistance test, the specific resistance ofSilver_HL was the lowest, that of the Au alloy group was the second lowest, and that of the Silver_IN, Silver_ZK, SS groups were the highest. Conclusions : We concluded that the needle composed of Ag has the best heat transfer velocity, highest electric conductivity and thermal conductivity, therefore the needle composed of Ag is suitable for warm needling.