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Harmonic versus LigaSure for Flap Creation in Bilateral Axillary Breast Approach Thyroid Surgery
Han Byul Ryu,Jong-hyuk Ahn,Jae Hwan Kim,Seong Woon Choi,Yun Suk Choi,Jin Wook Yi 대한갑상선-내분비외과학회 2020 The Koreran journal of Endocrine Surgery Vol.20 No.4
Purpose The bilateral axillary breast approach (BABA) is frequently utilized for remote access thyroid surgery. The first step in this surgical approach is to make a subcutaneous flap from the axilla to the neck, usually using a Harmonic ACE. Our institution has utilized LigaSure to create these flaps. This study reports comparative results with these 2 energy devices. Methods Medical data and video clips from 73 patients who underwent robotic BABA thyroid surgery were retrospectively reviewed. Flaps for BABA were created by first and second year endocrine fellows under the guidance of an experienced endocrine surgeon. There were no criteria for allocation to energy devices. Results Of the 73 patients, 31 and 42 underwent flap creation with the Harmonic ACE and LigaSure devices, respectively. Demographic characteristics were similar in the 2 groups. Mean time for flap creation was significantly shorter (33.46±8.33 vs. 38.27±7.14 min, P=0.012), and mean number of camera cleanings significantly lower (4.21±2.53 vs. 10.45±4.95, P<0.001), in the LigaSure group. Surgical site pain on day 2 was significantly lower in the LigaSure group. Postoperative bleeding and skin burn occurred only in patients in the Harmonic group. Conclusion LigaSure showed better performance than the Harmonic ACE device for BABA flap creation, as shown by time for flap creation, postoperative pain scores, and complications. Because this study was a small sized retrospective comparison, large randomized controlled trials are needed to confirm these results.
이한별(Han-Byul Lee),김완규(Wan-Kyu Kim),유시홍(Si-Hong Ryu),이성의(Seong-Eui Lee) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.11
Recently, the demand for light-weight, thin and flexible display is increased. In this paper, we suggest flexible photo-luminescent lamp with plasma discharge technology to meet the flexible display applications for a flexible BLU for LCD. The structure of flexible lamp consists of SUS foil with low dielectric constant material with parylene and MgO layers. The opto-electric characteristics of photo-luminescent lamp was evaluated. The Firing Voltage (Vf) of flexible photo-luminescent device was dramatically decreased over 40[V] with the adaption of parylene dielectric layers and MgO protective layers.
Bae, Jee‐,Hwan,Kang, Han‐,Byul,Ryu, Jiho,Yang, Cheol‐,Woong John Wiley Sons, Ltd 2012 Surface and interface analysis Vol.44 No.11
<P>This study examined the ternary Ni<SUB>2</SUB>SnP layer in Sn‐3.5Ag/EN‐P solder joints by using <I>in situ</I> transmission electron microscopy (TEM). The TEM analyses confirmed that Sn from the solder diffused into the P‐rich Ni layer through the ternary Ni‐Sn‐P layer. However, Ni was neither detected in the solder region nor formed an additional Ni<SUB>3</SUB>Sn<SUB>4</SUB> IMC layer at the interface between the solder and the ternary layer during the <I>in situ</I> annealing in the TEM. This suggests that the ternary Ni‐Sn‐P layer acts as a diffusion barrier to Ni during the aging process. Copyright © 2012 John Wiley & Sons, Ltd.</P>
Microcavity 적용 광자 발광 소자의 광 추출 향상 연구
이한별,이은혜,성민호,유시홍,이성의,Lee, Han Byul,Lee, Eun Hye,Sung, Min Ho,Ryu, Si Hong,Lee, Seong Eui 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.5
Recently, microcavity is studied to reduce the optical loss of BLU and OLED. In this paper, we suggest applying microcavity to photo-luminescent lamp with plasma discharge technology to meet the display applications for a BLU for LCD. The structure of photo-luminescent lamp consists of SUS foil and ITO glass with microcavity. The opto-electric characteristics of photo-luminescent lamp with microcavity was evaluated. The brightness of photo-luminescent device was increased over $111cd/m^2$ with the adaptation of patterned microcavity at $30{\mu}m$. The 3D optical simulation verified the enhanced light outcoupling when microcavity applied to the device.
Sung Soo Kim,Hyun Kuk Kim,Hyung Wook Park,Myung Ho Jeong,임경섭,Hae Jin Kee,Yu Hee Ryu,Han Byul Kim,Joo-Young Na,Young-Jae Ki,Keun-Ho Park,Dong-Hyun Choi,Ki Hong Lee,Nam Sik Yoon,Jeong Gwan Cho 대한심장학회 2020 Korean Circulation Journal Vol.50 No.1
Background and Objectives: Antiarrhythmic effect of renal denervation (RDN) after acute myocardial infarction (AMI) remains unclear. The goal of this study was to evaluate the effect of RDN on ventricular arrhythmia (VA) after AMI in a porcine model. Methods: Twenty pigs were randomly divided into 2 groups based on RDN (RDN, n=10; Sham, n=10). After implanting a loop recorder, AMI was induced by occlusion of the middle left anterior descending coronary artery. Catheter-based RDN was performed for each renal artery immediately after creating AMI. Sham procedure used the same method, but a radiofrequency current was not delivered. Electrocardiography was monitored for 1 hour to observe VA. One week later, the animals were euthanized and the loop recorder data were analyzed. Results: Ventricular fibrillation event rate and the interval from AMI creation to first VA in acute phase were not different between the 2 groups. However, the incidence of premature ventricular complex (PVC) was lower in the RDN than in the Sham. Additionally, RDN inhibited prolongation of the corrected QT (QTc) interval after AMI. The frequency of non-sustained or sustained ventricular tachycardia, arrhythmic death was lower in the RDN group in the early period. Conclusions: RDN reduced the incidence of PVC, inhibited prolongation of the QTc interval, and reduced VA in the early period following an AMI. These results suggest that RDN might be a therapeutic option in patients with electrical instability after AMI.