Mechanism of Artificial Heart

This book first describes medical devices in relation to regenerative medicine before turning to a more specific topic: artificial heart technologies.

Mechanism of Artificial Heart

Author: Takashi Yamane

Publisher: Springer

ISBN: 4431558314

Page: 77

View: 136

This book first describes medical devices in relation to regenerative medicine before turning to a more specific topic: artificial heart technologies. Not only the pump mechanisms but also the bearing, motor mechanisms, and materials are described, including expert information. Design methods are described to enhance hemocompatibility: main concerns are reduction of blood cell damage and protein break, as well as prevention of blood clotting. Regulatory science from R&D to clinical trials is also discussed to verify the safety and efficacy of the devices.

Artificial Hearts

Upon evaluating many thermal energy-conversion alternatives, each firm
submitted a design of an artificial heart ... heart system consisted of two main
subsystems: the thermal converter, or power supply, and the blood pump

Artificial Hearts

Author: Shelley McKellar

Publisher: JHU Press

ISBN: 1421423553

Page: 376

View: 678

Fighting heart disease with machines and devices-- Multiple approaches to building artificial hearts : technological optimism and political support in the early years -- Dispute and disappointment : heart transplantation and total artificial heart implant cases in the 1960s -- Technology and risk : nuclear-powered artificial hearts and medical device regulation -- Media spotlight : the Utah total artificial heart -- Clinical and commercial rewards : ventricular assist devices -- Securing a place : therapeutic clout and second-generation VADs -- Artificial hearts in the 21st century

Artificial Hearts

Artificial. Heart. Devices. Po-Lin Hsu and Tingting Wu Abstract The adverse
events (AEs) associated with AHD ... Keywords Artificial heart devices ·
Mechanisms · Adverse events · Challenges P.-L. Hsu (*) Artificial Organ
Technology ...

Artificial Hearts

Author: Ming Yang

Publisher: Springer Nature

ISBN: 981154378X


View: 984

Artificial Heart 3

Proceedings of the 3rd International Symposium on Artificial Heart and Assist
Devices, February 16–17, 1990, Tokyo, Japan J.M. Anderson, Tetsuzo Akutsu,
Hitoshi ... Alternative lubricants may reduce power losses in the mechanism. Use
of ...

Artificial Heart 3

Author: Tetsuzo Akutsu

Publisher: Springer Science & Business Media

ISBN: 4431681264

Page: 352

View: 241

The International Symposium on Artificial Heart and Assist Devices has been held three times, first in 1985, then in 1987 and 1990. It is my great pleasure to present Artificial Heart 3 (Proceedings of the 3rd International Symposium on Artificial Heart and Assist Devices). The third symposium was held in Tokyo on February 16 and 17, 1990. Our original intention was to invite all the principal investigators from the major artificial heart research laboratories in the world, in the first three symposia. The numbers of investigators in the fields of the artificial heart, ventricular assist systems, and biomaterials, invited for the symposia, totalled 7 in 1985, 8 in 1987, and 13 in 1990. The program of the third symposium consisted of 41 papers; 13 invited lectures, 8 papers contributed upon request, with 2 from the United States, and 20 regular selected papers including 2 from the United States, ana 1 each from Australia, Germany, and South Korea. During the last three years, the state of clinical application of artificial hearts and assist devices has changed. In the case of pneumatically driven blood pumps, we have now stepped into the age of practical use in patients. Accordingly, in this symposium we gave a special emphasis to topics of clinical application, particularly the use of an artificial heart as a bridge to heart transplantation. Sessions on implantable artificial hearts, biomaterials for the artificial heart, and heart transplantation were also included.

Heart Replacement

However, the mechanism leading to these complications has not been elucidated
. Recently, we have succeeded in maintaining a goat for 532 days with a total
artificial heart. In this experiment, the left and the right side blood pumps were
each ...

Heart Replacement

Author: Tetsuzo Akutsu

Publisher: Springer Science & Business Media

ISBN: 4431659218

Page: 524

View: 196

The 6th International Symposium on Artificial Heart and Assist Devices met in Tokyo in July 1996, bringing together researchers and specialists from around the world. The symposiums proceedings in this volume comprise papers from nine sessions, each opening with contributions by leading scientists: TAH, heart transplantation, biomaterials, VAS, clinical application, pathophysiology, engineering, new approaches, and special sessions. Of special note is the inclusion, for the first time, of pathophysiology related to clinical use of assist devices. The clinical application section includes a paper by Dr. Michael DeBakey on the progress made in recent years. With descriptions of the scientific exhibition, accompanied by photographs of all artificial heart devices and systems displayed by major laboratories and manufacturers, Artificial Heart 6 presents the latest information on developments in the field of artificial heart, biomaterials, and heart transplantation.

The 15th International Conference on Biomedical Engineering

Abstract— Since patients with extracorporeal pulsatile artificial hearts are always
exposed to thromboembolic risk, ... the inner cover via spring mechanism, firmly
attaching the inner cover to that of the artificial heart by the spring force when the

The 15th International Conference on Biomedical Engineering

Author: James Goh

Publisher: Springer Science & Business Media

ISBN: 3319029134

Page: 968

View: 490

This volume presents the processing of the 15th ICMBE held from 4th to 7th December 2013, Singapore. Biomedical engineering is applied in most aspects of our healthcare ecosystem. From electronic health records to diagnostic tools to therapeutic, rehabilitative and regenerative treatments, the work of biomedical engineers is evident. Biomedical engineers work at the intersection of engineering, life sciences and healthcare. The engineers would use principles from applied science including mechanical, electrical, chemical and computer engineering together with physical sciences including physics, chemistry and mathematics to apply them to biology and medicine. Applying such concepts to the human body is very much the same concepts that go into building and programming a machine. The goal is to better understand, replace or fix a target system to ultimately improve the quality of healthcare. With this understanding, the conference proceedings offer a single platform for individuals and organizations working in the biomedical engineering related field to gather and network with each other in so doing create the catalyst for future development of biomedical engineering in Asia.

Artificial Heart

In vitro tests , however , will be useful for studies of mechanisms of blood
destruction . Only long - term in vivo tests will allow us to obtain a true picture of
blood destruction caused by a total artificial heart . This section will describe the
results of ...

Artificial Heart

Author: Tetsuzō Akutsu

Publisher: Igaku-Shoin Medical Publishers

ISBN: 9789021920948

Page: 364

View: 676

Artificial Organs

There are two potential sources of heart valve failure, each of which requires
years to develop. One such mechanism is valvestenosisor narrowing of the valve
orifice (best seen with the valve in an open position). Valve stenosis is often
related ...

Artificial Organs

Author: Gerald E. Miller

Publisher: Morgan & Claypool Publishers

ISBN: 1598290495

Page: 72

View: 412

The replacement or augmentation of failing human organs with artificial devices and systems has been an important element in health care for several decades. Such devices as kidney dialysis to augment failing kidneys, artificial heart valves to replace failing human valves, cardiac pacemakers to reestablish normal cardiac rhythm, and heart assist devices to augment a weakened human heart have assisted millions of patients in the previous 50 years and offers lifesaving technology for tens of thousands of patients each year. Significant advances in these biomedical technologies have continually occurred during this period, saving numerous lives with cutting edge technologies. Each of these artificial organ systems will be described in detail in separate sections of this lecture.

Update in Heart Valve Replacement

Theoretically, the hinge mechanism can interfere more easily with mechanical
damage or thrombus formation in it. With a low rate of mechanical dysfunctions
and prosthetic thromboses in the mitral and aortic positions, even after
implantation ...

Update in Heart Valve Replacement

Author: D. Horstkotte

Publisher: Springer Science & Business Media

ISBN: 3662107139

Page: 146

View: 701

Natural and Artificial Models in Computation and Biology

5th International Work-Conference on the Interplay Between Natural and Artificial
Computation, IWINAC 2013, Mallorca, Spain, June 10-14 ... (PCG) are the
primary tool for the correct mechanical functional assessment of the heart

Natural and Artificial Models in Computation and Biology

Author: Jose Manuel Ferrandez Vicente

Publisher: Springer

ISBN: 3642386377

Page: 436

View: 491

The two volume-set, LNCS 7930 and LNCS 7931, constitutes the refereed proceedings of the 5th International Work-Conference on the Interplay between Natural and Artificial Computation, IWINAC 2013, held in Mallorca, Spain, in June 2013. The 92 revised full papers presented in LNCS 7930 and LNCS 7931 were carefully reviewed and selected from numerous submissions. The first part, LNCS 7930, entitled "Natural and Artificial Models in Computation and Biology”, includes all the contributions mainly related to the methodological, conceptual, formal, and experimental developments in the fields of neurophysiology and cognitive science. The second part, LNCS 7931, entitled “Natural and Artificial Computation in Engineering and Medical Applications”, contains the papers related to bioinspired programming strategies and all the contributions related to the computational solutions to engineering problems in different application domains, specially Health applications, including the CYTED “Artificial and Natural Computation for Health” (CANS) research network papers. In addition, this two volume-set reflects six interesting areas: cognitive robotics; natural computing; wetware computation; quality of life technologies; biomedical and industrial perception applications; and Web intelligence and neuroscience.

The Technological Fix

types of artificial hearts, including pendulum, atomic energy, and electromagnetic
hearts. 13 His ... and material of which the artificial heart was to be made; (2) the
source of energy; (3) the driving mechanism; and (4) the regulating devices.

The Technological Fix

Author: Lisa Rosner

Publisher: Routledge

ISBN: 1135938504

Page: 272

View: 719

The term "technological fix" should mean a fix provided by technology--a solution for all of our problems, from medicine and food production to the environment and business. Instead, technological fix has come to mean a cheap, quick fix using inappropriate technology that usually creates more problems than it solves. This collection sets out the distinction between a technological fix and a true technological solution. Bringing together scholars from a variety of disciplines, the essays trace the technological fix as it has appeared throughout the twentieth century. Addressing such "fixes" as artificial hearts, industrial agriculture and climate engineering, these essays examine our need to turn to technology for solutions to all of our problems.

Comprehensive Biomaterials

6.625. Long-Term Implantable Ventricular Assist Devices (VADs) and Total
Artificial Hearts (TAHs) A Kumar, Boston Scientific ... mechanisms that cause
additional stress on the weakening heart, leading to HF, a positive feedback

Comprehensive Biomaterials

Author: Paul Ducheyne

Publisher: Elsevier

ISBN: 0080552943

Page: 3672

View: 478

Comprehensive Biomaterials brings together the myriad facets of biomaterials into one, major series of six edited volumes that would cover the field of biomaterials in a major, extensive fashion: Volume 1: Metallic, Ceramic and Polymeric Biomaterials Volume 2: Biologically Inspired and Biomolecular Materials Volume 3: Methods of Analysis Volume 4: Biocompatibility, Surface Engineering, and Delivery Of Drugs, Genes and Other Molecules Volume 5: Tissue and Organ Engineering Volume 6: Biomaterials and Clinical Use Experts from around the world in hundreds of related biomaterials areas have contributed to this publication, resulting in a continuum of rich information appropriate for many audiences. The work addresses the current status of nearly all biomaterials in the field, their strengths and weaknesses, their future prospects, appropriate analytical methods and testing, device applications and performance, emerging candidate materials as competitors and disruptive technologies, and strategic insights for those entering and operational in diverse biomaterials applications, research and development, regulatory management, and commercial aspects. From the outset, the goal was to review materials in the context of medical devices and tissue properties, biocompatibility and surface analysis, tissue engineering and controlled release. It was also the intent both, to focus on material properties from the perspectives of therapeutic and diagnostic use, and to address questions relevant to state-of-the-art research endeavors. Reviews the current status of nearly all biomaterials in the field by analyzing their strengths and weaknesses, performance as well as future prospects Presents appropriate analytical methods and testing procedures in addition to potential device applications Provides strategic insights for those working on diverse application areas such as R&D, regulatory management, and commercial development

Management of Heart Failure

Pathophysiology The noted biological and medical writer Lewis Thomas mused
in his 1983 essay, entitled 'The Artificial Heart': We do not really understand the
underlying mechanism of cardiomyopathies at all, and we are not much better at

Management of Heart Failure

Author: Jai Raman

Publisher: Springer Science & Business Media

ISBN: 9781848001046

Page: 321

View: 394

Surgical Management of Heart Failure brings together the current knowledge on the surgical management of heart failure into one volume. It is designed to have copious illustrations and photographic material that will explain the techniques and surgical management of patients with heart failure in an effective modern format.

Academic Press Dictionary of Science and Technology

Arthrotardigrada artificial insemination Arthrotardigrada Invertebrate Zoology,
minute water bears in the phylum ... to earth. artificial heart Medicine, a pumping
mechanism that duplicates the output, rate, and blood pressure of the natural
heart; ...

Academic Press Dictionary of Science and Technology

Author: Christopher G. Morris

Publisher: Gulf Professional Publishing

ISBN: 9780122004001

Page: 2432

View: 709

Over 125,000 entries cover 124 scientific and technological fields, including acoustical engineering, cartography graphic arts, microbiology, organic chemistry, radiology, and zoology

Left Ventricular Assist Devices An Issue of Cardiology Clinics E Book

Devices are categorized as standard full support, less-invasive full support,
partial support: rotary pumps, partial support: counterpulsation devices, right
ventricular assist device, and total artificial heart. Implantation strategy,
mechanism of ...

Left Ventricular Assist Devices  An Issue of Cardiology Clinics   E Book

Author: John A. Elefteriades

Publisher: Elsevier Health Sciences

ISBN: 1455712043

Page: 188

View: 602

A left ventricular assist device (LVAD) is a surgically implanted pump that helps the left ventricle pump blood to the rest of the body. The purpose of this issue is to let cardiologists know about the latest devices, their complications, and the clinical situations in which they are most beneficial.


THE artificial heart system consists of a blood handling pump and a device to
control the driving . The artificial heart available at the moment chiefly adopts a
pneumatic driving mechanism , for its excellent controllability as well as facility in






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