scholarly journals Safety in Electrosurgery as an Essential Skill in the Training of Surgeons

2021 ◽  
Vol 1 (3) ◽  
pp. 130-131
Author(s):  
L. A. Otdelnov ◽  
A. S. Mukhin ◽  
O. V. Gorokh
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
High Energy ◽  
Energy Methods ◽  
Hepatoduodenal Ligament ◽  
Specialized Accreditation ◽  
Training Of Surgeons

The analysis of 19 videotapes of laparoscopic cholecystectomy performed by accredited on the virtual simulator "LapSim" during the passage of the station "Planned Surgery" within the framework of primary specialized accreditation in the specialty "Surgery" was carried out. The mistakes made by those accredited in the application of high-energy methods at the stage of isolation of the elements of the hepatoduodenal ligament have been studied. Mistakes when using high-energy methods were made by 14 out of 19 accredited. The importance of training surgeons in the basics of electrosurgical safety is emphasized.

scholarly journals Visualization of biliary ducts while doing laparoscopy, using HEV LapVision

2018 ◽  
Vol 85 (4) ◽  
pp. 9-11
Author(s):  
О. V. Ogurtsov ◽  
О. V. Lukavetskyy
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Cystic Duct ◽  
Simple Procedure ◽  
Biliary Tree ◽  
High Energy ◽  
Biliary Duct ◽  
Critical View ◽  
Fluorescent Cholangiography ◽  
Biliary Ducts ◽  
Intraoperative Visualization

Objective. To determine efficacy of intraoperative visualization of biliary tree, using fluorescent cholangiography (FCH) and a high–energy visible laparoscopy vison (HEV LapVison) while laparoscopic cholecystectomy performance (LCHE). Маterials and methods. In 25 patients LCHE was performed. Preoperatively fluorescein was injected intravenously for guaranteeing of the FCH performance. HEV LapVison was applied for intraoperative visualization of fluorescence. Results. Visualization of the cystic duct and its inflow into common biliary duct was guaranteed in 90% patientsх. In 13 (52%) patients the anatomic picture was typical while in 7 (28%) some variants were observed: a parallel course of cystic duct and common biliary duct, and low level of the cystic duct inflow into hepaticocholedochus. Conclusion. FCH is a simple procedure for intraoperative navigation doing and guaranteeing of «critical view on security» while performance of LCHE. FCH together with HEV LapVison constitutes a new surgical procedure, making possible revealing of extrahepatic biliary ducts. This method may be applied as additional one while doing LCHE, preventing damage of biliary ducts.

scholarly journals Additives for Ambient 3D Printing with Visible Light

2021 ◽  
Author(s):  
Dowon Ahn ◽  
Lynn Stevens ◽  
Kevin Zhou ◽  
Zachariah Page
Keyword(s):  
3D Printing ◽  
Visible Light ◽  
Reaction Times ◽  
High Energy ◽  
Energy Methods ◽  
Mechanical Responses ◽  
Violet Light ◽  
Acrylic Resins ◽  
Printing Processes ◽  
Made In

With 3D printing we desire to be “limited only by our imagination”, and although remarkable advancements have been made in recent years the scope of printable materials remains narrow compared to other forms of manufacturing. Light-driven polymerization methods for 3D printing are particularly attractive due to unparalleled speed and resolution, yet the reliance on high energy UV/violet light in contemporary processes limits the number of compatible materials due to pervasive absorption, scattering, and degradation at these short wavelengths. Such issues can be addressed with visible light photopolymerizations. However, these lower-energy methods often suffer from slow reaction times and sensitivity to oxygen, precluding their utility in 3D printing processes that require rapid hardening (curing) to maximize build speed and resolution. Herein, multifunctional thiols are identified as simple additives to enable rapid high resolution visible light 3D printing under ambient (atmospheric O<sub>2</sub>) conditions that rival modern UV/violet-based technology. The present process is universal, providing access to commercially relevant acrylic resins with a range of disparate mechanical responses from strong and stiff to soft and extensible. Pushing forward, the insight presented within this study will inform the development of next generation 3D printing materials, such as multicomponent hydrogels and composites.

scholarly journals Additives for Ambient 3D Printing with Visible Light

2021 ◽  
Author(s):  
Dowon Ahn ◽  
Lynn Stevens ◽  
Kevin Zhou ◽  
Zachariah Page
Keyword(s):  
3D Printing ◽  
Visible Light ◽  
Reaction Times ◽  
High Energy ◽  
Energy Methods ◽  
Mechanical Responses ◽  
Violet Light ◽  
Acrylic Resins ◽  
Printing Processes ◽  
Made In

With 3D printing we desire to be “limited only by our imagination”, and although remarkable advancements have been made in recent years the scope of printable materials remains narrow compared to other forms of manufacturing. Light-driven polymerization methods for 3D printing are particularly attractive due to unparalleled speed and resolution, yet the reliance on high energy UV/violet light in contemporary processes limits the number of compatible materials due to pervasive absorption, scattering, and degradation at these short wavelengths. Such issues can be addressed with visible light photopolymerizations. However, these lower-energy methods often suffer from slow reaction times and sensitivity to oxygen, precluding their utility in 3D printing processes that require rapid hardening (curing) to maximize build speed and resolution. Herein, multifunctional thiols are identified as simple additives to enable rapid high resolution visible light 3D printing under ambient (atmospheric O<sub>2</sub>) conditions that rival modern UV/violet-based technology. The present process is universal, providing access to commercially relevant acrylic resins with a range of disparate mechanical responses from strong and stiff to soft and extensible. Pushing forward, the insight presented within this study will inform the development of next generation 3D printing materials, such as multicomponent hydrogels and composites.

The effect of high-energy methods of forming on the sintering behaviour and properties of Si3N4-based materials

2019 ◽  
Vol 80 ◽  
pp. 277-285
Author(s):  
Piotr Wyzga ◽  
Tsutomu Mashimo ◽  
Akira Yoshiasa ◽  
Lucyna Jaworska ◽  
Piotr Klimczyk
Keyword(s):  
High Energy ◽  
Energy Methods ◽  
Sintering Behaviour

Ti-Y Surface Alloy Formed by High-Energy Methods

2015 ◽  
Vol 1085 ◽  
pp. 192-196
Author(s):  
Nadejda N. Morozova ◽  
Konstantin V. Sosnin ◽  
Elizaveta A. Petrikova ◽  
Anton D. Teresov ◽  
Yury F. Ivanov
Keyword(s):  
Electron Beam ◽  
Phase Composition ◽  
High Energy ◽  
Energy Methods ◽  
Alloyed Layer ◽  
Combined Method ◽  
Titanium Layer ◽  
Mechanical And Tribological Properties ◽  
Electroexplosive Alloying ◽  
Globular Form

The alloying of the titanium layer by yttrium is carried out with the combined method of electroexplosive alloying and the subsequent radiation by a high-intensity electron beam. The research of structure, element and phase composition, mechanical and tribological properties of the alloyed layer is executed. The saturation of the titanium layer by atoms of yttrium, oxygen and carbon that leads to formation of oxides and carbides of the titanium and yttrium is revealed. The formation of two types of an eutectic is established. It is shown that the eutectic enriched with the titanium has a globular form when the eutectic enriched with yttrium has a plated one. The multiple increasing of microhardness, decreasing of friction coefficient and the wear rate of the alloyed layer is revealed.

Structure of Ti-40Nb Alloy Formed with High-Energy Methods

2019 ◽  
Vol 21 (2) ◽  
pp. 124-135
Author(s):  
Zhanna Kovalevskaya ◽  
◽  
Yurii Sharkeev ◽  
Margarita Khimich ◽  
Anna Eroshenko ◽  
...  
Keyword(s):  
High Energy ◽  
Energy Methods

Polymerization of Hexyl Methacrylate in Nanoemulsions Made by Low and High Energy Methods

2013 ◽  
Vol 50 (8) ◽  
pp. 812-820 ◽  
Author(s):  
A. G. Alvarado ◽  
L. A. Pérez-Carrillo ◽  
M. Arellano ◽  
M. Rabelero ◽  
I. Ceja ◽  
...  
Keyword(s):  
High Energy ◽  
Energy Methods ◽  
Hexyl Methacrylate

Phase Formation in the Ti-Y-O System Formed Using High-Energy Methods

2015 ◽  
Vol 756 ◽  
pp. 243-249
Author(s):  
Yuriy F. Ivanov ◽  
Elizaveta A. Petrikova ◽  
Anton D. Teresov ◽  
Anatolyi A. Klopotov ◽  
Victor E. Gromov ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Phase Formation ◽  
High Energy ◽  
Surface Alloy ◽  
Energy Methods ◽  
Nanoscale Structure ◽  
Oxygen Atoms

A surface alloy of the yttrium/titanium system, enriched with oxygen atoms, has been developed using high-energy methods. Formation of a multilayer multiphase submicron-and nanoscale structure has been revealed. A substantial increase in the microhardness (by ≈3 times), a decrease in the friction coefficient (more than by 2 times) and the wear rate (by ≈3 times) of the doped layer have been revealed.

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