지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Ultrasonic shears is currently in wide use as an energy device for minimal invasive surgery. There is an advantage of minimizing the carbonization behavior of the tissue due to the vibrational energy transfer system of the transducer by applying a piezoelectric ceramic. However, the vibrational energy transfer system has a pitfall in energy consumption. When the movement of the forceps is interrupted by the tissue, the horn which transfers the vibrational energy of the transducer will be affected. A study was performed to recognize different tissues by measuring the impedance of the transducer of the ultrasonic shears in order to find the factor of energy consumption according to the tissue. In the first stage of the study, the voltage and current of the transducer connecting portion were measured, along with the phase changes. Subsequently, in the second stage, the impedance of the transducer was directly measured. In the final stage, using the handpiece, we grasped the tissue and observed the impedance differences appeared in the transducer To verify the proposed tissue distinguishing method, we used the handpiece to apply a force between 5N and 10N to pork while increasing the value of the impedance of the transducer from 400 Ω.. It was found that fat and skin tissue, tendon, liver and protein all have different impedance values of 420 Ω,490 Ω, 530 Ω, and 580 Ω, respectively. Thus, the impedance value can be used to distinguish the type of tissues grasped by the forceps. In the future study, this relationship will be used to improve the energy efficiency of ultrasonic shears.
목차
등록된 정보가 없습니다.
참고문헌 (20)
참고문헌 신청
A. Turo / 2003 / Ultra-low noise front-end electronics for aircoupled ultrasonic non-destructive evaluation / Ndt & E International 36 : 93 ~
C.C. Chung / 2002 / Doubleblind, randomized trialcomparing Harmonic Scalpel hemorrhoidectomy, bipolar scissors hemorrhoidectomy, and scissors excision : ligation technique /
C.N. Jin / 1999 / Electric Properties of LB Films using Impedance Analysis of Quartz Crystal / The Korean Instiute of Electirical Engineers 48 : 503 ~
D. C. Lee / 1997 / Development trend of the ultrasonic electric motor by piezoelectric ceramics / The Korea Institute of Electrical Engineers 46 : 23 ~
D. Robertson / 2006 / Comparison of the frequency and physical nature of the lowest order parasitic mode in single crystal and ceramic 2-2 and 1-3 piezoelectric composite tr
C.C. Chung / 2002 / Doubleblind, randomized trialcomparing Harmonic Scalpel hemorrhoidectomy, bipolar scissors hemorrhoidectomy, and scissors excision : ligation technique /
C.N. Jin / 1999 / Electric Properties of LB Films using Impedance Analysis of Quartz Crystal / The Korean Instiute of Electirical Engineers 48 : 503 ~
D. C. Lee / 1997 / Development trend of the ultrasonic electric motor by piezoelectric ceramics / The Korea Institute of Electrical Engineers 46 : 23 ~
D. Robertson / 2006 / Comparison of the frequency and physical nature of the lowest order parasitic mode in single crystal and ceramic 2-2 and 1-3 piezoelectric composite tr
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