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nano knife

Alexander Davis, Salvatore Surdo, Gianvito Caputo, Ilker S Bayer, Athanassia Athanassiou
Superhydrophobic materials hold an enormous potential in sectors as important as aerospace, food industries or biomedicine. Despite this great promise, the lack of environmentally friendly production methods and limited robustness remain the two most pertinent barriers to the scalability, large-area production and widespread use of superhydrophobic materials. In this work, highly robust superhydrophobic silicone monoliths are produced through a scalable and environmentally friendly emulsion technique. It is first found that stable and surfactantless water-in-polydimethylsiloxane (PDMS) emulsions can be formed through mechanical mixing...
December 29, 2017: ACS Applied Materials & Interfaces
Yoshiyasu Kitagawa, Takuto Suzuki, Taro Hara, Taketo Yamaguchi
BACKGROUND: Although endoscopic submucosal dissection (ESD) is an accepted and established treatment for early esophageal squamous cell carcinoma (EESCC), it is technically difficult, time consuming, and less safe than endoscopic mucosal resection. To perform ESD safely and more efficiently, we proposed a new technique of esophageal ESD using an IT knife nano with the clip traction method. This study aimed to evaluate the efficacy and safety of ESD using this new technique. METHODS: We retrospectively reviewed all consecutive cases of esophageal ESD performed using an IT knife nano with the clip traction method at our hospital between March 2013 and January 2017...
June 27, 2017: Surgical Endoscopy
Yongquan Qing, Chuanbo Hu, Chuanning Yang, Kai An, Fawei Tang, Junyang Tan, Changsheng Liu
Superhydrophobic surfaces with self-cleaning properties have been developed based on roughness on the micro- and nanometer scales and low-energy surfaces. However, such surfaces are fragile and stop functioning when exposed to oil. Addressing these challenges, here we show an ultrarobust self-cleaning surface fabricated by a process of metal electrodeposition of a rough structure that is subsequently coated with fluorinated metal-oxide nanoparticles. Scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction were employed to characterize the surfaces...
May 2, 2017: ACS Applied Materials & Interfaces
Kenichiro Imai, Kinichi Hotta, Yuichiro Yamaguchi, Sayo Ito, Hiroyuki Ono
BACKGROUND AND AIM: Endoscopic submucosal dissection (ESD) for colorectal neoplasms (CRN) of >50 mm is considered technically difficult. The ITknife nano™ was developed specifically for ESD of CRN and esophageal superficial neoplasms; however, only limited data are available regarding its use in this procedure. Here we assessed the safety and efficacy of ESD using the ITknife nano™ for large CRN (>50 mm). METHODS: We carried out a retrospective study, including consecutive patients with CRN larger than 50 mm that were treated by ESD between September 2002 and August 2016 at our institution...
April 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
Zike Jiang, Xinsheng Yu, Shikui Zhai, Yingyan Hao
A ratiometric optical sensor has been developed with electrospinning processing method for dissolved oxygen measurement. The sensing film is fabricated by using silver nano-particles (Ag NPs) doped with tris(4,7-diphenyl-1,10-phenanthroline) ruthenium(II) dichloride complex (Ru(DPP)₃Cl₂) encapsulated in plasticized polymethyl methacrylate (PMMA). An insensitive 3-(2-benzothiazolyl)-7-(diethy lamino)-(6CI,7CI) (Coumarin6) is adopted as reference. The ratio of oxygenation is calculated at each image pixel of a 3CCD camera to quantify the oxygen concentration in aqueous environment...
March 9, 2017: Sensors
M Demir, M Kurt, A B Akçay
BACKGROUND AND AIM: It has been reported that the fragmented QRS (fQRS) is related to left ventricular systolic dysfunction and diastolic dysfunction. The aim of this study was to determine the frequency of fragmented QRS (fQRS) in patients with decompensated cirrhosis and to evaluate the relationship between the presence of fQRS and systolic and diastolic dysfunction. METHOD: PThe study included consecutive 189 patients with decompensated cirrhosis. fQRS pattern was described as presence of RSR' manifested as existence of additional R wave and notching in either R or S waves in ECG recordings...
April 2016: Acta Gastro-enterologica Belgica
T Suzuki, T Hara, Y Kitagawa, T Yamaguchi
AIM: Endoscopic submucosal dissection (ESD) is currently widely conducted for the treatment of early gastrointestinal -cancers. Due to the characteristic anatomy of the large intestine, needle- tip type devices such as Dual knife are mainly used in colorectal ESD. On the other hand, the non- needle-tip type IT knife is a unique device with an insulated tip, and has been reported to be safe, efficacious and speedy when used in gastric ESD. A new model of IT knife, IT knife nano, anticipated to be useful for esophageal and colorectal ESD has become available, but its usefulness has not been reported...
April 2016: Acta Gastro-enterologica Belgica
Zygmunt Zdrojewicz, Mateusz Waracki, Bartosz Bugaj, Damian Pypno, Krzysztof Cabała
Nanotechnologies are new areas of research focusing on affecting matter at the atomic and molecular levels. It is beyond doubt that modern medicine can benefit greatly from it; thus nanomedicine has become one of the main branches of nanotechnological research. Currently it focuses on developing new methods of preventing, diagnosing and treating various diseases. Nanomaterials show very high efficiency in destroying cancer cells and are already undergoing clinical trials. The results are so promising that nanomaterials might become an alternative to traditional cancer therapy, mostly due to the fact that they allow cancer cells to be targeted specifically and enable detailed imaging of tissues, making planning further therapy much easier...
October 29, 2015: Postȩpy Higieny i Medycyny Doświadczalnej
Eylon Lahat, Rony Eshkenazy, Alex Zendel, Barak Bar Zakai, Mayan Maor, Yael Dreznik, Arie Ariche
BACKGROUND: Although ablation therapy has been accepted as a promising and safe technique for treatment of unrespectable hepatic tumors, investigation of its complications has been limited. A physician who performs ablation treatment of hepatic malignancies should be aware of the broad spectrum of complications. Proper management is possible only if the physician Performing ablation understands the broad spectrum of complications encountered after ablation. OBJECTIVES: TO SYSTEMATICALLY REVIEW THE COMPLICATIONS AFTER DIFFERENT ABLATION MODALITIES: Radiofrequency ablation (RFA), microwave ablation (MWA) and Nano knife for the treatment of liver tumors and analyze possible risk factors that precipitate these complications...
October 2014: Hepatobiliary Surgery and Nutrition
Yuichi Shimizu, Masakazu Takahashi, Takeshi Yoshida, Shouko Ono, Katsuhiro Mabe, Mototsugu Kato, Masahiro Asaka, Naoya Sakamoto
Endoscopic resection (ER) has been widely accepted as an effective and minimally invasive treatment for patients with superficial esophageal squamous cell carcinoma (SCC). Techniques of conventional endoscopic mucosal resection (EMR) were first developed for ER. There are three representative methods of conventional EMR: endoscopic esophageal mucosal resection (EEMR)-tube method, EMR using a cap-fitted endoscope (EMRC) method and two-channel EMR method. In the past decade, techniques of endoscopic submucosal dissection (ESD) have become established as standard methods of ER...
March 2013: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
Yu Chen, Hangrong Chen, Yang Sun, Yuanyi Zheng, Deping Zeng, Faqi Li, Shengjian Zhang, Xia Wang, Kun Zhang, Ming Ma, Qianjun He, Linlin Zhang, Jianlin Shi
Bloodless surgical knife: Nano-biotechnology has been introduced into imaging-guided high-intensity focused ultrasound (HIFU) cancer surgery by adopting engineered multifunctional manganese-based mesoporous composite nanocapsules as the contrast agents for T(1)-weighted magnetic resonance imaging (MRI) and simultaneously as synergistic agents for MRI-guided HIFU cancer surgery.
December 23, 2011: Angewandte Chemie
M Z Islam, J N McMullin, Y Y Tsui
Development of a microfluidic device is generally based on fabrication-design-fabrication loop, as, unlike the microelectronics design, there is no rigorous simulation-based verification of the chip before fabrication. This usually results in extremely long, and hence expensive, product development cycle if micro/nano fabrication facilities are used from the beginning of the cycle. Here, we illustrate a novel approach of device prototyping that is fast, cheap, reliable, and most importantly, this technique can be adopted even if no state-of-the-art microfabrication facility is available...
May 2011: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
Cafer Türkmen, Hesna Sazak-Oveçoğlu, Mahir Günday, Gülşad Güngör, Meral Durkan, Mustafa Oksüz
OBJECTIVE: To assess in vitro the shear bond strength of a nanohybrid composite resin bonded with three adhesive systems to enamel surfaces prepared with acid and Er,Cr:YSGG laser etching. METHOD AND MATERIALS: Sixty extracted caries- and restoration-free human maxillary central incisors were used. The teeth were sectioned 2 mm below the cementoenamel junction. The crowns were embedded in autopolymerizing acrylic resin with the labial surfaces facing up. The labial surfaces were prepared with 0...
June 2010: Quintessence International
S Hosaka, T Shintani, A Kikukawa, K Itoh
We studied a nanometre-sized optical probe in a scanning near-field optical microscope. The probe profile is determined by using a knife-edge method and a modulated transfer function evaluation method which uses nanometre-sized line-and-space tungsten patterns (with spaces 1 microm to 50 nm apart) on SiO2 substrates. The aluminium-covered, pipette-pulled fibre probe used here has two optical probes: one with a large diameter (350 nm) and the other with a small diameter (10 nm). The small-diameter probe has an optical intensity approximately 63 times larger than that of the large-diameter probe, but the power is about 1/25 of that of the large probe...
May 1999: Journal of Microscopy
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