• Title/Summary/Keyword: Y-Stent

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Oblique transnasal wiring canthopexy via Y-V epicanthoplasty for telecanthus correction in a patient with Waardenburg syndrome

  • Choi, Bong Gyu;Kim, Yong-Ha
    • Archives of Craniofacial Surgery
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    • v.20 no.5
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    • pp.329-331
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    • 2019
  • Telecanthus is a common symptom accompanied by Waardenburg syndrome, a rare genetic disorder. The optimal surgery for telecanthus correction is still debated. A 28-year-old patient with Waardenburg syndrome underwent transnasal wiring canthopexy using a Y-V epicanthoplasty for telecanthus correction. A Mini-Monoka stent was used to prevent damage to the lacrimal apparatus. The intercanthal distance decreased from 50 mm to 43.2 mm. The easily designed Y-V epicanthoplasty incision provides sufficient operative field for oblique transnasal wiring, which is effective in properly positioning the medial canthal tendon. It has minimal scarring resulting in satisfactory cosmetic outcomes.

THE FIBRIN-ADHESIVE SYSTEM IN MUCOSAL GRAFT VESTIBULOPLASTY (조직접착제를 이용한 점막이식 전정성형술)

  • Min, Seung-Ki
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.17 no.2
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    • pp.130-136
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    • 1995
  • Vestibuloplasty are following categories : Mucosal advancement(submucous), secondary epithlization(reepithelization) and grafting vestibuloplasty. Although certain procedures are indicated for alveolar bone loss and sulcus shortening, relapse can occur. Every efforts to minimize or compensate for it is controversy. O'Steen(1970) reported the mucous graft methods that none of vestibular shrinkage and graft contracture. 15patients in mucous graft vestibuloplasty with fibrin adhesive system(Beriplast) were taken in cases of alveolar bone resorption and mucosal shortening due to traumatized alveolar bone defects, senile atrophic alveolar bone, postoperative cyst or tumor resection, edentulous alveolar bone loss, and others. A technique in the use of small piece of palatal mucosa$(1{\times}20mm)$ from the lateral aspect of the palate with adhesive system provided to secure the skin grafts, avoid stent fixation, postoperative patient's comfort and less time-consuming than the standard technique, especially excellent bleeding control.

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Stent-Assisted Coil Trapping in a Manual Internal Carotid Artery Compression Test for the Treatment of a Fusiform Dissecting Aneurysm

  • Seung, Won-Bae;Kim, Jin-Wook;Park, Yong-Seok
    • Journal of Korean Neurosurgical Society
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    • v.51 no.5
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    • pp.296-300
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    • 2012
  • Internal carotid artery (ICA) trapping can be used for the treatment of giant intracranial aneurysms, blood blister-like aneurysms, and fusiform dissecting aneurysms. Fusiform dissecting aneurysms are challenging to treat surgically and endovascularly because of no definite neck and critical perforators. Surgical or endovascular trapping of the ICA with or without an extracranial-intracranial bypass has commonly been used as an effective method to treat these lesions, but balloon test occlusion (BTO) must be performed. Here, we report a case of a ruptured fusiform dissecting aneurysm of the distal ICA, which was successfully treated using an endovascular ICA trapping with a manual ICA compression test instead of BTO.

Thermal Process for Enhancing Mechanical Strength of PLGA Nanoparticle Layers on Coronary Stents

  • Joo, Jae-Ryang;Nam, Hye-Yeong;Nam, So-Hee;Baek, In-Su;Park, Jong-Sang
    • Bulletin of the Korean Chemical Society
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    • v.30 no.9
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    • pp.1985-1988
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    • 2009
  • Poly (lactic-co-glycolic acid) (PLGA) nanoparticles loading paclitaxel have been deposited on coronary stents by self-assembling properties of colloidal particles. The layers of the nanoparticles were enhanced to a sufficient mechanical strength by a thermal process under the proper temperature and humidity conditions. In vitro release studies proved the controlled paclitaxel release of the nanoparticle layers. This technique gives rise to a new range of applications for nanoparticles and drug-eluting stents.

Estimating Material Parameters of Rubber-liked Material Similar to Biomaterial (생체 유사재료를 설명하는 물질 상수 추정)

  • Kang, Taewon
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.22 no.1
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    • pp.45-49
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    • 2013
  • It is important to have a well developed strain energy function in order to understand the mechanical behavior of biomaterial like the blood vessel of artery. However, since it is not possible to have a complete form of strain energy function of artery, theoretical framework describing the behaviour of Rubber-like material which is similar to blood vessel is applied to infer useful forms of strain energy function of biomaterial. Based on Chuong-Fung model and Mooney-Rivlin model, material parameters are estimated based on experimental data. From the results, it can be inferred that the estimated parameters can be used to explain the difference of mechanical characteristics between normal vessel and vessel with stent.

The Management of Pancreatic Fistula Complicated by Gastric Fistulation Following Emergency Splenectomy

  • Huei, Tan Jih;Lip, Henry Tan Chor;Thou, Chow Sing;Mohamad, Yuzaidi;Alwi, Rizal Imran
    • Journal of Trauma and Injury
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    • v.33 no.1
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    • pp.43-47
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    • 2020
  • Pancreatic and gastric fistulas are rare complications of emergency splenectomy, and it is extremely rare for a pancreatic fistula to be further complicated by a fistulation into the stomach. Here, we present a case of pancreatogastric fistula in a 60-year-old man who experienced polytrauma due to a blunt mechanism. He underwent emergency splenectomy for splenic injury and developed a pancreatic fistula as a complication. A percutaneous endoscopic procedure was performed to drain the fistula, after which he developed a pancreatogastric fistula as a further complication. A double-pigtail stent was inserted via gastroscopy into the fistula tract to allow internal drainage of the pancreatic collection into the stomach cavity. When a pancreatic fistula is complicated by gastric fistulation, endoscopic stenting of the pancreatogastric fistula tract for internal drainage is an effective treatment option.

A Right Intercosto-Bronchial Artery Derived from the Thyrocervical Trunk: An Unusual Cause of Type II Endoleak Post Thoracic Aortic Stenting

  • Choong, Andrew Mtl;Mitchell, Ken;Jenkins, Jason
    • Journal of Chest Surgery
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    • v.48 no.2
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    • pp.139-141
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    • 2015
  • The aetiology, incidence and management of type II endoleaks in standard infrarenal endovascular aortic aneurysm repair is well described. Far less data is available for thoracic stent grafting. We present a rare and interesting case of a type II endoleak post thoracic aortic stenting and highlight the aberrant anatomy that can cause this phenomenon in such cases.

Spontaneous Anterior Cerebral Artery Dissection Presenting with Simultaneous Subarachnoid Hemorrhage and Cerebral Infarction in a Patient with Multiple Extracranial Arterial Dissections

  • Park, Yung Ki;Yi, Hyeong-Joong;Lee, Young Jun;Kim, Young-Seo
    • Journal of Korean Neurosurgical Society
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    • v.53 no.2
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    • pp.115-117
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    • 2013
  • Simultaneous subarachnoid hemorrhage and infarction is a quite rare presentation in a patient with a spontaneous dissecting aneurysm of the anterior cerebral artery. Identifying relevant radiographic features and serial angiographic surveillance as well as mode of clinical manifestation, either hemorrhage or infarction, could sufficiently determine appropriate treatment. Enlargement of ruptured aneurysm and progressing arterial stenosis around the aneurysm indicates impending risk of subsequent stroke. In this setting, prompt treatment with stent-assisted endovascular embolization can be a reliable alternative to direct surgery. When multiple arterial dissections are coexistent, management strategy often became complicated. However, satisfactory clinical results can be obtained by acknowledging responsible arterial site with careful radiographic inspection and antiplatelet medication.

Visceral Debranching Thoracic Endovascular Aneurysm Repair for Chronic Dissecting Thoracoabdominal Aortic Aneurysm

  • Cho, Kwang Jo;Park, Jong Yoon
    • Journal of Chest Surgery
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    • v.47 no.6
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    • pp.548-551
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    • 2014
  • Type II chronic dissecting thoracoabdominal aortic aneurysms are a surgically challenging disease. The conventional thoracoabdominal aortic aneurysm repair technique using cardiopulmonary bypass is a high-risk procedure. However, a recently developed endovascular technique may be an alternative treatment for the disease, but faces the obstacle of lesional restriction. This new technique uses a hybrid strategy to overcome the limits of endovascular thoracoabdominal aortic aneurysm repair. Herein, we report on a successful outcome after performing the hybrid visceral debranching procedure.

Acute Thrombotic Occlusion of Left Internal Jugular Vein Compressed by Bypass Graft for Thoracic Endovascular Aortic Repair Debranching Procedure

  • Sim, Hyung Tae;Beom, Min Sun;Kim, Sung Ryong;Ryu, Sang Wan
    • Journal of Chest Surgery
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    • v.47 no.6
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    • pp.552-555
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    • 2014
  • Thoracic endovascular aortic repair has become a widespread alternative treatment option for thoracic aortic aneurysm. The debranching of arch vessels may be required to provide an acceptable landing zone for an endovascular stent graft. We report a case where the bypass graft used in the thoracic endovascular aortic repair procedure compressed the left internal jugular vein, causing acute thrombotic occlusion.