Download or read book Magnetic Bearings for Mechanical Cardiac Assist Devices written by Steven Day and published by Momentum Press. This book was released on 2015 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Magnetic bearings are mechatronic devices that produce contact-free electromagnetic force to support a load, such as a moving train or a spinning rotor. Compared to traditional bearings, magnetic bearings offer several advantages: no friction, low heat generation, no required lubrication, quiet operation, and fast and stable rotation. Because of these reasons, magnetic bearings have been used in rotary ventricular assist devices (VADs) to increase design life, reduce or eliminate material wear and bearing maintenance, as well as to increase biocompatibility by eliminating high fluid stresses and heat generation, both of which are associated with hemolysis, platelet activation and aggregation, and thrombus growth. In this monograph, magnetic bearings and their application in VADs are introduced. First, the operating principles of magnetic bearings are introduced. Typical structures of passive bearings, which are comprised solely of permanent magnets, and active magnetic bearings (AMB), which make use of electromagnets and position sensors to control the position of the rotor, are described. We include some description of all the components of a typical AMB system, including actuator, position sensor, controller, and amplifier, as well as different structures of electromagnet actuators, coils design, and iron selection. A range of position sensors, including those typically used in blood pumps, as well as self-sensing bearings are discussed. The basics of the hardware and the software (control laws) that comprise a typical magnetic bearing system are described. A section describes the performance considerations of magnetic bearings and the effect on the overall performance of an assist device that uses magnetic bearings. Lastly, the magnetic suspension of existing VADs with magnetic bearings are described: Berlin Heart INCOR, Heartware HVAD, WorldHeart Levacor and MiFlow, Terumo Duraheart, PediaFlow, MiTiHeart, and LEV-VAD."--Abstract.
Download or read book Magnetic Bearings for Assist Devices written by Stephen Day and published by Momentum Press. This book was released on 2015-12-16 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces magnetic bearings--mechatronic devices that produce contact-free electromagnetic force to support a load, such as a moving train or a spinning rotor. Compared to traditional bearings, magnetic bearings offer several advantages: no friction, low heat generation, no required lubrication, quiet operation, and fast and stable rotation. For these reasons, magnetic bearings have been used in rotary ventricular assist devices (VADs) to increase design life, reduce or eliminate material wear and bearing maintenance, as well as to increase biocompatibility by eliminating high fluid stresses and heat generation, both of which are associated with hemolysis, platelet activation and aggregation, and thrombus growth. The book covers the principles of these bearings, how they are used in integrated control and electronics systems, and useful information on several major brands of current assist devices.
Download or read book Mechanical Circulatory Support A Companion to Braunwald s Heart Disease Ebook written by Robert L. Kormos and published by Elsevier Health Sciences. This book was released on 2011-08-30 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Circulatory Support, by Drs. Robert L. Kormos and Leslie W. Miller, provides the clinically relevant information you need to effectively use this therapy to treat and manage end-stage cardiovascular disease. In this Companion to Braunwald’s Heart Disease, the world’s most prominent experts in mechanical circulatory support (MCS) cover basic science, device construction, clinical applications, socioeconomic implications, future directions, and more. Stay on top of hot topics - including innovative devices like continuous flow pumps, next-generation centrifugal pumps, and total artificial hearts; MCS for pediatric and congenital heart disease; cellular, molecular, genomic, and functional changes that occur in the failing heart in response to MCS; and Interagency Registry of Mechanically Assisted Circulatory Support (INTERMACS) as a tool to track and advance clinical practice. Tap into discussions of hot topics in mechanical circulatory support (MCS), including current types of devices and clinical settings for MCS; MCS for pediatric and congenital heart disease; myocardial recovery, regenerative therapy, bleeding and thrombosis with MCS; cellular, molecular, genomic, and functional changes that occur in the failing heart in response to MCS; and Interagency Registry of Mechanically Assisted Circulatory Support (INTERMACS) as a tool to track and advance clinical practice. Get a complete picture of the role of mechanical circulatory support in treatment through coverage of device construction, clinical applications, socioeconomic implications, and future directions. Master the pathophysiology and rationale of treatment with discussions of basic science in addition to clinically-relevant information and current clinical practice guidelines. Apply the expertise of the world’s most prominent leaders in mechanical circulatory support.
Download or read book Mechanical Circulatory and Respiratory Support written by Shaun D. Gregory and published by Elsevier. This book was released on 2024-11-01 with total page 1374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Circulatory and Respiratory Support, Second Edition, continues to provide a comprehensive overview of the past, present and future development of mechanical circulatory and respiratory support devices. This new edition provides an update on the field while also introducing new elements within the field such as ex-vivo perfusion, devices for HFpEF, design for manufacture, oxygenator design, and more content on route to market. Chapters from over 60 internationally-renowned experts focuses on the entire life-cycle of mechanical circulatory and respiratory support – from the descent into heart and lung failure, alternative medical management, device options, device design, implantation techniques, complications and medical management of the supported patient, patient-device interactions, cost effectiveness, route to market and a view to the future. This second edition is a useful resource for biomedical engineers and clinicians who are designing new mechanical circulatory or respiratory support devices, while also providing a comprehensive guide of the entire field for those who are already familiar with some areas and want to learn more. Reviews of the most cutting-edge research are provided throughout each chapter, along with guides on how to design new devices and which areas require specific focus for future research and development. - Presents an engineering pathway to develop the most advanced medical devices - Features a clinical summary of how to select the right patients and treat them optimally while supported with these devices - Includes a detailed path to market for those developing new devices in this field
Download or read book Magnetic Bearings written by Gerhard Schweitzer and published by Springer Science & Business Media. This book was released on 2009-06-10 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives. Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of the design and performance of these systems. The book is organized in a logical fashion, starting with an overview of the technology and a survey of the range of applications. A background chapter then explains the central concepts of active magnetic bearings while avoiding a morass of technical details. From here, the reader continues to a meticulous, state-of-the-art exposition of the component technologies and the manner in which they are assembled to form the AMB/rotor system. These system models and performance objectives are then tied together through extensive discussions of control methods for both rigid and flexible rotors, including consideration of the problem of system dynamics identification. Supporting this, the issues of system reliability and fault management are discussed from several useful and complementary perspectives. At the end of the book, numerous special concepts and systems, including micro-scale bearings, self-bearing motors, and self-sensing bearings, are put forth as promising directions for new research and development. Newcomers to the field will find the material highly accessible while veteran practitioners will be impressed by the level of technical detail that emerges from a combination of sophisticated analysis and insights gleaned from many collective years of practical experience. An exhaustive, self-contained text on active magnetic bearing technology, this book should be a core reference for anyone seeking to understand or develop systems using magnetic bearings.
Download or read book Magnetic Bearings Magnetic Drives and Dry Gas Seals Conference written by and published by CRC Press. This book was released on 1995-08-08 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Circulatory Support A Companion to Braunwald s Heart Disease Ebook written by James K Kirklin and published by Elsevier Health Sciences. This book was released on 2019-07-09 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering comprehensive, authoritative coverage of mechanical circulatory support (MCS), this fully revised companion to Braunwald's Heart Disease provides the clinically relevant information you need to effectively use this therapy to treat and manage end-stage heart failure. New editors and authors – experts in both cardiology and cardiovascular surgery – bring you fully up to date with the newest technology and devices, as well as basic science, clinical applications, adverse event monitoring and management, socioeconomic implications, future directions, and more. - Covers all of the newest techniques, including new-generation devices. - Discusses the management of common patient problems, highlighting cautions and outcomes, as well as pathophysiology and rationale for treatment. - Brings you up to speed with the latest coverage of ventricular assist devices (VAD), extracorporeal membrane oxygenation (ECMO), next-generation centrifugal pumps, and total artificial hearts. - Provides a complete clinical perspective of the latest scientific breakthroughs and analysis of the current literature. - Includes coverage of the most recent guidelines and protocols, including MCS for pediatric and congenital heart disease; the Interagency Registry of Mechanically Assisted Circulatory Support (INTERMACS) as a tool to track and advance clinical practice; and cellular, molecular, genomic, and functional changes that occur in the failing heart in response to MCS. - Presents practical evidence from the registry of thousands of cases to guide cardiologists, cardiovascular surgeons, emergency physicians, primary care physicians, and other team members on the best management course to follow for each particular patient. - Enhanced eBook version included with purchase, which allows you to access all of the text, figures, and references from the book on a variety of devices
Download or read book Mechanical Support for Heart Failure written by Jamshid H. Karimov and published by Springer Nature. This book was released on 2020-09-04 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of mechanical circulatory support of the failing heart in adults and children. The book uniquely combines engineering knowledge and the clinician’s perspective into a single resource, while also providing insights into current and future development of mechanical circulatory support technology, such as ventricular assist devices, the total artificial heart and catheter-based technologies for heart failure. Topics featured in this book include: The history of mechanical circulatory device development. Fundamentals of hemodynamics support. Clinical management of mechanical circulatory devices. Surgical implantation techniques. Current limitations of device therapies in advanced heart failure. Advanced and novel devices in the development pipeline. Opportunities for advancement in the field. Mechanical Support for Heart Failure: Current Solutions and New Technologies is a must-have resource for not only physicians, residents, fellows, and medical students in cardiology and cardiac surgery, but also clinical and basic researchers in biomedical engineering with an interest in mechanical circulatory support, heart failure, and new technological applications in medicine.
Download or read book Sabiston and Spencer s Surgery of the Chest E Book written by Frank Sellke and published by Elsevier Health Sciences. This book was released on 2009-12-16 with total page 2201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through seven successful editions, Sabiston & Spencer Surgery of the Chest has set the standard in cardiothoracic surgery references. Now, the new 8th Edition, edited by Frank W. Sellke, MD, Pedro J. del Nido, MD, and Scott J. Swanson, MD, carries on this tradition with updated coverage of today's essential clinical knowledge from leaders worldwide. Guidance divided into three major sections—Adult Cardiac Surgery, Congenital Heart Surgery, and Thoracic Surgery—lets you quickly find what you need, while new and revised chapters reflect all of the important changes within this rapidly evolving specialty. Expert Consult functionality—new to this edition—enables you to access the complete contents of the 2-volume set from anyplace with an Internet connection for convenient consultation where and when you need it. This is an ideal source for mastering all of the most important current knowledge and techniques in cardiac and thoracic surgery—whether for specialty board review or day-to-day practice. Features short, focused chapters that help you find exactly what you need. Presents the work of international contributors who offer a global view of the entire specialty. Covers thoracic surgery as well as adult and pediatric cardiac surgery for a practical and powerful single source. Includes nearly 1,100 illustrations that help to clarify key concepts. Features online access to the complete contents of the 2-volume text at expertconsult.com for convenient anytime, anywhere reference. Covers the hottest topics shaping today's practice, including the latest theory and surgical techniques for mitral valve disease, advances in the treatment of congenital heart disease, minimally invasive surgical approaches to the treatment of adult and congenital cardiac disease and thoracic disease, stent grafting for aortic disease, and cell-based therapies. Your purchase entitles you to access the web site until the next edition is published, or until the current edition is no longer offered for sale by Elsevier, whichever occurs first. Elsevier reserves the right to offer a suitable replacement product (such as a downloadable or CD-ROM-based electronic version) should access to the web site be discontinued.
Download or read book Cardiopulmonary Bypass written by Kaan Kırali and published by Elsevier. This book was released on 2022-11-30 with total page 2364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiopulmonary Bypass: Advancements in Extracorporeal Life Support provides comprehensive coverage on the technological developments and clinical applications of extracorporeal technologies, including the underlying basic science and the latest clinical advances in the field. Written by experts around the world, this book comprises all characteristics of cardiopulmonary bypass as well as chapters regarding equipment, physiology and pathology, pediatric aspects and clinical applications. Important highlights include the latest updates regarding minimal invasive cardiopulmonary bypass (MICPB), extracorporeal circulatory and respiratory support (ECCRS) in cardiac and non-cardiac patients, ECMO support in COVID-19, and updated guidelines of extracorporeal technologies. This book is an invaluable resource to clinicians, researchers and medical students in the fields of cardiothoracic surgery, cardiac anesthesiology, intensive care, and perfusion technology. - Offers comprehensive and cutting-edge knowledge of cardiopulmonary bypass and extracorporeal life support during surgery and non-surgical situations - Discusses basic science principles along with practical clinical applications - Includes content from authors who are well-known experts in the field, and whose authoritative contributions are invaluable for early-career and experienced practitioners alike
Download or read book Greenfield s Surgery written by Michael W. Mulholland and published by Lippincott Williams & Wilkins. This book was released on 2012-09-11 with total page 6502 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth Edition of Greenfield's Surgery has been thoroughly revised, updated, and refocused to conform to changes in surgical education and practice. Reflecting the increasingly clinical emphasis of residency programs, this edition features expanded coverage of clinical material and increased use of clinical algorithms. Key Points open each chapter, and icons in the text indicate where Key Points are fully discussed. Many of the black-and-white images from the previous edition have been replaced by full-color images. This edition has new chapters on quality assessment, surgical education, and surgical processes in the hospital. Coverage of surgical subspecialty areas is more sharply focused on topics that are encountered by general surgeons and included in the current general surgery curriculum and ABSITE exam. The vascular section has been further consolidated. A new editor, Diane M. Simeone, MD, PhD, has joined the editorial team. This edition is available either in one hardbound volume or in a four-volume softbound set. The lightweight four-volume option offers easy portability and quick access. Each volume is organized by organ system so you can find the facts you need within seconds. The companion website presents the fully searchable text, an instant-feedback test bank featuring over 800 questions and answers, and a comprehensive image bank. Unique to this new edition's website are 100 "Morbidity and Mortality" case discussions. Each case reviews a specific surgical complication, how the complication was addressed, and reviews the literature on approaches and outcomes.
Download or read book Mechanical Blood Trauma in Circulatory Assist Devices written by Timothy Michael Maul and published by Momentum Press. This book was released on 2015-03-03 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical cardiovascular assist devices must be properly designed to avoid damage to the blood they contact. The factors that affect the hemocompatibility of a cardiovascular assist device include three major non-physiological components – the material, fluid flow paths, and flow related stresses, - as well as the device interaction with the native vasculature. Furthermore, the interaction of the device with the blood is not static. Foreign surfaces activate blood components including platelets, leukocytes and the coagulation cascade. Thrombus formation on the surface of the device can alter the fluid dynamics in a manner that causes erythrocyte damage ranging from significant hemolysis to sub-lethal trauma that can take many days to weeks to develop into a significant clinical problem. This sub-lethal blood trauma is not easily detectable without special equipment, which is typically unavailable in routine clinical practice. Surveillance for blood damage is often sub-optimal in the clinical setting, but once clinically relevant hemolysis occurs, crucial decisions - device removal, replacement, or additional medical therapies including surgery or plasmapheresis - that take into account the risk/benefit of intervention must be quickly evaluated. The various preclinical designs and testing, surgical considerations, available surveillance techniques, and clinical consequences will be discussed using recent and historical case reports to highlight key points.
Download or read book Pediatric Critical Care E Book written by Jerry J. Zimmerman and published by Elsevier Health Sciences. This book was released on 2011-03-24 with total page 1769 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provide the latest in superior quality care for critically ill children with the full-color, updated 4th Edition of Fuhrman and Zimmerman’s Pediatric Critical Care. In print, and now online, Drs. Bradley P. Fuhrman and Jerry J. Zimmerman use a comprehensive, organ-systems approach to help you manage a full range of disease entities. Get up-to-the-minute knowledge of topics such as acute lung injury, multiple organ dysfunction syndrome, and more. Implement new clinical techniques and diagnostic tests, weigh the varying perspectives of six associate editors with expertise in the field, reference 1,000+ illustrations to aid diagnosis, and keep sharp with online access to board-style review questions. This definitive title will ensure that you consistently deliver the very best intensive care to your pediatric patients. Focus on the development, function, and treatment of a wide range of disease entities with the text’s clear, logical, organ-system approach. Keep all members of the pediatric ICU team up to date with coverage of topics particularly relevant to their responsibilities. Keep current with the latest developments in palliative care, mass casualty/epidemic disease, acute respiratory failure, non-invasive ventilation, neurocritical care, neuroimaging, hypoxic-ischemic encephalopathy, stroke and intracerebral hemorrhage, systemic inflammatory response syndrome, acute lung injury, multiple organ dysfunction syndrome, and much more. Quickly find the information you need with sections newly reorganized for easier access. Gain the perspectives of six expert associate editors on all the new developments in the field. Understand complex concepts quickly and conclusively with a brand new full-color format and more than 1,000 illustrations. Search the full text, download the image library, and access online board review questions targeting every relevant topic, all at www.expertconsult.com.
Download or read book Device Therapy in Heart Failure written by William H. Maisel and published by Springer Science & Business Media. This book was released on 2010-01-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heart failure affects over 5 million patients in the United States alone, and is a chronic and debilitating disease. While a number of pharmacologic therapies have shown varying degrees of effectiveness, many recent advances in the treatment of heart failure has focused on device based therapies. In Device Therapy in Heart Failure, William H. Maisel and a panel of authorities on the use and implementation of device based therapies provide a comprehensive overview of the current and developing technologies that are used to treat heart failure. Individual chapters provide an in-depth analysis of devices such as CRT’s and ICD’s, while broader topics such as the pathophysiology of heart failure and its current medical therapies are also discussed. Additional topics include Pacing and Defibrillation for Atrial Arrhythmias, Atrial Fibrillation Ablation, and Percutaneous Treatment of Coronary Artery Disease.
Download or read book Congestive Heart Failure and Cardiac Transplantation written by Daniel J. Garry and published by Springer. This book was released on 2017-06-01 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive overview of heart failure and cardiac transplantation and integrates scientific and clinical information about the physiology, pathophysiology, diagnosis, and treatment of this disorder. Organized into five parts, it reviews the history and basic mechanisms of heart failure; etiology of heart failure; heart failure disease progression; advanced therapies for heart failure; and cardiac transplantation. The book presents basic concepts in the physiology, molecular biology, pathology, and epidemiology of the normal and failing heart; known causes of heart failure, such as right heart failure, valvular cardiomyopathy, molecular mechanisms of sarcomeric cardiomyopathies, and neuromuscular cardiomyopathy; cardiorenal syndrome; neurohormonal activation; cardiac resynchronization, ventricular assist devices; regenerative mechanisms; orthotopic heart transplantation; early and late management of the post-transplant patient; heart transplantation and antibody-mediated rejections; heart-lung transplantation; and cardiac xenotransplantation. Featuring contributions from leaders in the fields of heart failure, cardiac transplantation, cardiac pathology, and cardiovascular molecular research, Congestive Heart Failure and Cardiac Transplantation is a valuable compendium for cardiologists, cardiothoracic surgeons, researchers, trainees, and students.
Download or read book Mechanical Circulatory Support Therapy In Advanced Heart Failure written by Mario C Deng and published by World Scientific. This book was released on 2007-03-28 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This engaging book provides a state-of-the-art introduction to the rapidly evolving field of mechanical circulatory support therapy in the care of patients with advanced heart failure. It is aimed at healthcare teams around the world who are involved in patient care, research, and teaching of advanced heart failure; healthcare professionals in training; and interested lay persons.In particular, this book• serves as a comprehensive resource and practice guide on all aspects of mechanical circulatory support therapy, starting with an overview on heart failure management and then continuing with the referral and evaluation, the care before and after mechanical circulatory support implantation, the analysis of outcomes and complications, as well as a description of research and societal perspectives in the field of mechanical circulatory support therapy;• is founded on the expertise of Columbia University Medical Center (New York City), which has one of the most renowned heart failure, mechanical circulatory support, and heart transplantation programs in the world;• takes a multidisciplinary integrated healthcare team approach, including the perspectives of cardiologists, cardiac surgeons, nurses, coordinators, social workers, psychologists, physical therapists, financial experts, and bioethicists; and• provides in a unique way the complementary viewpoints from the expert healthcare team's as well as the patient's and family's perspectives, with patient vignettes interspersed throughout the entire text./a
Download or read book Life System Modeling and Simulation written by Shiwei Ma and published by Springer. This book was released on 2014-10-01 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the first part of the refereed proceedings of the International Conference on Life System Modeling and Simulation, LSMS 2014, and of the International Conference on Intelligent Computing for Sustainable Energy and Environment, ICSEE 2014, held in Shanghai, China, in September 2014. The 159 revised full papers presented in the three volumes of CCIS 461-463 were carefully reviewed and selected from 572 submissions. The papers of this volume are organized in topical sections on biomedical signal processing, imaging, and visualization; computational methods and intelligence in modeling genetic and chemical networks and regulation; computational methods and intelligence in organism modeling; computational methods and intelligence in modeling and design of synthetic biological systems; computational methods and intelligence in biomechanical systems, tissue engineering and clinical bioengineering; intelligent medical apparatus and clinical applications; modeling and simulation of societies and collective behaviour; innovative education in systems modeling and simulation; data analysis and data mining of biosignals; feature selection; robust optimization and data analysis.
