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유무기 하이브리드형 비할로겐계 난연제의 합성 및 난연효과
임성문,임승완,박정재,김영호 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
유무기 하이브리드형 비할로겐 타입의 인계난연제를 합성하였으며 합성조건에 따른 난연성을 검토하였다. 하이브리드형 난연제로서 우레탄 및 아크릴계 구조의 물질을 개발하였다. 기존의 난연제는 우레탄 등 고분자와 혼화 시 물성저하 문제가 있으나 하이브리드형의 경우에는 물성변화 없이 난연성을 유지하는 장점이 있다. 하이브리드 형태를 이루기 위하여 무기계로서는 TEOS를 활용하여 실란(Si) 커플링을 하였으며 인계 난연제를 고분자 골격에 직접 도입하여 난연성을 가질 수 있는 환경친화형적인 유-무기 하이브리드형 비할로겐계 구조를 얻었다. 본 연구결과 적정하게 합성된 최종제품은 V-0등급 및 산소지수 37.2%의 난연성능이 있음이 확인되었다.
무기하 액와 접근법을 이용한 로봇 갑상선 절제술: 단일 술자에 의한 최초 1년간의 경험
노재형,이정훈,나국영,이잔디,정웅윤<SUP>1<.SUP>,소의영,Jae Hyung Noh,Jeong Hun Lee,Kuk Young Na,Jandee Lee,Ph.D.,Woong Youn Chung Ph.D.<SUP>1 <.SUP>and Euy Young Soh,Ph.D. 대한갑상선-내분비외과학회 2010 The Koreran journal of Endocrine Surgery Vol.10 No.3
Purpose: Various endoscopic thyroidectomy procedures have been designed to minimize visible cervical scarring. However, endoscopic thyroidectomy is a technically challenging procedure that is performed by a limited surgeon. Robotic systems aida surgeon in performing minimally invasive head and neck surgery by offering superior visualization and dexterity. This study reports the initial experience of one surgeon with robotic thyroidectomy to assess the technical feasibility and safety of the approach. Methods: One hundred four thyroid cancer patients (97 females, 7 males; mean age of 39.8±8.1 years) underwent robotic thyroidectomy using gasless transaxillary approach between November 2008 and October 2009 in Ajou University Hospital. All the procedures were completed successfully using the da Vinci surgical system without open conversion. Patient characteristics, postoperative clinical results, complications, and pathologic details were assessed. Results: Total thyroidectomy was performed in 25 (24.0%) patients, subtotal thyroidectomy in 13 (12.5%) patients, and unilateral lobectomy in 66 (63.5%) patients. All patients underwent ipsilateral central compartment neck dissection, and two patients underwent selective lymph node (LN) dissection. The mean operation time was 134.5±47.2 min (range 61∼310 min), in which the actual time for the thyroidectomy with lymphadenectomy (console time) was 56.4 min. (range 31∼270). The mean number of LN resected was 3.9 (range 0∼28). There were no serious complications. The mean hospital stay was 2.9±0.9 days (range 2∼7). Conclusion: Robotic thyroidectomy is a feasible, safe, and cosmetically excellent procedure. The application of robotic technology for thyroid surgeries could be an alternative to endoscopic or conventional open thyroidectomy. (Korean J Endocrine Surg 2010;10:157-162)
단일 기관에서 10년간 시행한 갑상선 미세유두암의 내시경 갑상선 절제술의 경험
김영은(Yeoung-Eun Kim),곽하나(Ha-Na Kwak),김준호(Jun Ho Kim),최윤정(Yoon Jung Choi),윤지섭(Ji-Sup Yun),손병호(Byung Ho Son),박용래(Yong-Lai Park) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.5
Purpose: Endoscopic thyroid surgery has been widely used because of the cosmetic advantage and the development of laparoscopic instruments. We have performed endoscopic thyroidectomy by breast approach and gasless transaxillary approach on papillary thyroid microcarcinomas. In this study, we describe these two types of endoscopic procedures with the technique of the method and surgical outcomes. Methods: From Oct. 1999 to Oct. 2009, each procedure was performed in 162 patients divided into two groups. Breast approach group was in 91 patients and gasless transaxillary approach group was in 71 patients. We compared the results of mean ages, sex ratio, extent of operation, mean hospital stay, operating time, pathologic characteristics and postoperative complications between the breast approach group and gasless transaxillary approach group. Results: Ninety-one cases treated using breast approach, and seventy-one cases treated using gasless transaxillary approach. The operation time was 197.4±60.7 minutes (95∼350) in breast approach group, and 100.1±19.8 minutes (65∼140) in gasless transaxillary approach group. Post operative complications are; 2 cases of transient hoarseness, 8 cases of hypocalcemia (including 2 cases of permanent hypocalcemia), 2 cases of chest wall discomfort in breast approach group, and 1 case of transient hoarseness, 2 cases of transient hypocalcemia, 1 case of postoperative bleeding in gasless axillary approach group. Conclusion: Endoscopic thyroidectomy is a safe and technically feasible alternative to conventional thyroidectomy in patients with benign and highly selected malignant disease. We expect it can increase the extent of surgery.
액와접근법을 이용한 무기하 내시경적 갑상선절제술 30예
박준호,윤종호,박찬흔,Jun Ho Park,M.D.,Jong Ho Yoon,M.D. and Chan Heun Park,M.D. 대한갑상선-내분비외과학회 2005 The Koreran journal of Endocrine Surgery Vol.5 No.2
Purpose: Surgery for thyroid disease requires a skin incision that can result in postsurgical problems such as prominent scars, adhesions, hypesthesia, and paresthesia in the neck. To overcome these problems, we performed a gasless endoscopic thyroidectomy via an axillary approach. Methods: Between May 2004 and April 2005, 30 female patients underwent gasless endoscopic thyroidectomy via an axillary approach. Surgical outcomes were evaluated in terms of operating time, length of hospital stay, and the incidence of perioperative complications. Patient opinion was assessed using a verbal response scale at two and four months after surgery. Results: The mean operating time was 126.8⁑32.4 minutes, and the mean length of hospital stay was 4.3⁑1.1 days. No cases required conversion to open surgery and none involved significant intraoperative complications. Three patients (10.0%) complained slight hypesthesia or paresthesia in the anterior chest wall, and only 2 patients (6.7%) complained the discomfort while they were swallowing for 4 months after surgery. All patients were satisfied with the cosmetic results. Conclusion: Gasless endoscopic thyroidectomy via an axillary approach is feasible and safe and provides excellent cosmetic results with a minimal degree of postoperative complaints. This procedure provides another surgical option for the treatment of benign thyroid disease in selected patients. (Korean J Endocrine Surg 2005;5:81-86)
액와접근법을 이용한 무기하 내시경적 갑상선 절제술: 634예에 대한 수술 결과
강상욱,정종주,윤지섭<SUP>1<,SUP>,성태연,이승철,이용상,남기현,장항석,정웅윤,박정수,Sang-Wook Kang,Jong Ju Jeong,Ji-Sup Yoon,<SUP>1<,SUP>,Tae Yon Sung,Seung Chul Lee,Yong Sang Lee,Kee-Hyun Nam,Hang Seok Chang,Woong Youn Chung,and Ch 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.1
이경원,박찬흔,박용래,현기훈,윤지섭,Kyung-Won Lee,Chan-Heun Park,Yong-Lai Park,Ki-Hun Hyun,Ji-Sup Yoon 대한갑상선-내분비외과학회 2013 The Koreran journal of Endocrine Surgery Vol.13 No.4
Purpose: Gasless transaxillary approach to endoscopic thyroidectomy is a widely performed procedure for benign or malignant thyroid neoplasms. However, it requires wide dissection for approaching the target area. The intravenous patient-controlled analgesia (IV PCA) is an effective method for postoperative pain control and patients can use it according to their requirement. However, patients suffer from nausea, vomiting, sleep disturbance, etc. due to opioids. Pain pump ON-Q<sup>Ⓡ</sup> PainBuster<sup>Ⓡ</sup> (pain buster) has been used widely in various surgeries for control of postoperative localizing and wide area pain without side effects of opioid analgesia because it consists of Ropivacaine. Methods: From Aug. 2008 to Jan. 2013, Gasless transaxillary endoscopic thyroidectomy was performed in 90 patients in a single institution, who were divided into three groups, including the IV PCA, pain buster, and null groups. We compared postoperative outcomes, pain severity between groups. We recorded scores immediately, 6, 12, 24, and 48 hours after surgery following visual analog pain score (VAS), and investigated hospital stay and occurrence of events of nausea, vomiting, and complications. Results: In the IV PCA group, it was discontinued due to nausea in 36.7% of patients. No significant difference in pain severity following VAS score was observed among the three groups. However, smaller numbers of analgesia injections were required in the Pain buster group than in the other groups, and fewer patients suffered from constipation, compared with the PCA group. Conclusion: Pain buster showed even effects compared to IV PCA, with few side effects and less discomfort of patients, compared with the other groups. Therefore, pain buster was thought to be the proper method for pain control after dissection of the anterior chest wall, cervical area in order to secure an operative view for transaxillary endoscopic thyroi-dectomy.