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박경택,한일용,조광현,Park, Kyoung-Taek,Han, Il-Yong,Cho, Kwang-Hyun 대한기관식도과학회 2010 大韓氣管食道科學會誌 Vol.16 No.2
Background: The esophageal perforation is related to high morbidity and mortality rates if the diagnosis and treatment are delayed. The aim of this study is to evaluate the affecting factors on outcome and prognosis of the patients who suffer from esophageal perforation. Material and Methods: Twenty-six patients were treated with esophageal perforation in our institute from Jan. 1992 to Feb. 2010. We retrospectively reviewed the results of treatment for esophageal perforation to understand the risk factors affecting survival in patients. Results: The subjects are 26 patients suffered with esophageal perforation and the mean age is $52{\pm}17.8$ years old. 16 esophageal perforations were caused spontaneously, 25 cases were treated surgically. The mortality rate is higher in the cases o pre-operative mediastinitis. Conclusion: The shortness time interval until the beginning of treatment should be achieved to reduce the incidence of fatal post-treatment morbidity and mortality.
박경택,류지윤,김연수,김창영,장우익,Park, Kyung-Taek,Ryoo, Ji-Yoon,Kim, Yeon-Soo,Kim, Chang-Young,Chang, Woo-Ik 대한기관식도과학회 2007 大韓氣管食道科學會誌 Vol.13 No.2
Background: The mediastinum is the anatomic space which is restricted and the clinical aspect varies according to location, size and type of neoplasm. Diagnostic and therapeutic approaches to mediastinal neoplasms have changed over and over. We presented our recent therapeutic experiences with these neoplasms. The object and method: The 36 patients were treated in operation from 2000 until 2006. The male patients were 20 and the female patients were 16. Age of the patients ranged from 5 to 70, and the median age was $46.4{\pm}21.9$. The child patients were two. Result: The most prevalent anatomic distribution of the neoplasm was anterosuperior mediastinum. The most common neoplasm was thymoma, followed by thymic cyst, teratoma, ganglioneuroma. The complete excison of neoplasm was accomplished in 96% of patient group except thymoma patient group. One patient underwent total thymectomy, and the other 12 patients underwent extended thymectomy from 13 thymoma patient group. In the malignant neoplasm, 7 patients were received additional treatment after operation. There was short-term death of 1 person and late death of 1 person. Conclusion: Our results except clinical manifestation are compared favorably with other reports. Surgery is the management of choice for patients with mediastinal neoplasm and early curative resection is considered to optimize clinical outcome for patients.
디젤자동차 Brake Booster용 분리형 Vacuum Pump 개발
박경택(K. T. Park),박태조(T. J. Park),박춘욱(C. W. Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
In this paper, a separate type vacuum pump with single vane was designed and manufactured for brake booster of diesel vehicles. The CATIA software was applied in modeling of vacuum pump components and the elastohydrodynamic lubrication analysis was carried out to predict the lubrication conditions between the vane tip and inner surface of casing. The results showed that fully hydrodynamic lubrication condition can be sustained even at lower speeds, and high vacuum performance was obtained. Therefore the results obtained can be used in improvement of all types of vacuum pump.