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  • Blood Pump - an overview | ScienceDirect Topics

    P. Alex Smith, ... Roland Graefe, in Mechanical Circulatory and Respiratory Support, 2018. Velocity Diagrams. Blood pump designers are able to vary the following parameters: rotor diameter, number of blades, inlet and outlet angles, blade height, volute or diffuser diameter, and operating speed. These values can be derived based on the mathematical relationships explained below.

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  • Mechanical stability of elastomeric polymers for blood ...

    As a series of studies on the mechanical properties of materials used in cardiac prostheses, static and dynamic characteristics and stability of five kinds of elastomeric polymers have been studied by uniaxial tensile and fatigue tests in air at room temperature and in saline solution at 37°C.

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  • A review of implantable pulsatile blood pumps:

    It has been reported that long-term use of continuous-flow mechanical circulatory support devices (CF-MCSDs) may induce complications associated with diminished pulsatility. Pulsatile-flow mechanical circulatory support devices (PF-MCSDs) have the potential of overcoming these shortcomings with the …

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  • (PDF) Axial flow artificial heart blood pumps: A brief

    Introduction: Centrifugal blood pumps have been widely adopted in conventional adult cardiopulmonary bypass and circulatory assist procedures. Different brands of centrifugal blood pumps incorporate distinct designs which affect pump performance. In this adult extracorporeal life support (ECLS) model, the performances of two brands of centrifugal blood pump (RotaFlow blood pump and CentriMag ...

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  • Mechanical performance comparison between

    1998-1-1 · A miniature intraventricular axial flow blood pump for left ventricular support are under development. One of the key technologies which requires for them is sealing of the motor shaft. In this study, to prevent the blood from back flowing into the motor side, mechanical seals were developed, and the tribological performance of them was ...

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  • Seal performances in mechanical seals for an axial

    Mechanical blood traumatization by tubing and throttles in in vitro pump tests: experimental results and implications for hemolysis theory. Schima H(1), Müller MR, Tsangaris S, Gheiseder G, Schlusche C, Losert U, Thoma H, Wolner E. Author information: (1)Second Department of …

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  • Mechanical blood traumatization by tubing and

    Abstract. The first roller pump was patented in 1855 by Porter and Bradley and was hand operated. A modification first named 'surgical pump', designed and manufactured by E. E. Allen in 1887, was intended for direct blood transfusion. Truax, who also distributed and promoted the Allen pump with one roller, developed the first double roller pump in ...

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  • History of extracorporeal circulation: the invention

    2021-5-14 · Spot-check BPMD: An electronic BPMD with an electrical pump that inflates the upper arm cuff and a digital display that shows the BP measurement. This device is typically designed to provide continuous BP monitoring in a hospital setting but could also be used to provide “spot checks” of BP (i.e. intermittent resting BP measurements).

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  • 20012 WHO Technical specifications for automated non ...

    2021-6-10 · The device takes blood from a lower chamber of the heart and helps pump it to the body and vital organs, just as a healthy heart would. A VAD may be used if one or both of the heart’s lower ...

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  • Mechanical Circulatory Support Systems | Abbott

    P. Alex Smith, ... Roland Graefe, in Mechanical Circulatory and Respiratory Support, 2018. Velocity Diagrams. Blood pump designers are able to vary the following parameters: rotor diameter, number of blades, inlet and outlet angles, blade height, volute or diffuser diameter, and operating speed. These values can be derived based on the mathematical relationships explained below.

    Get Price
  • Blood Pump - an overview | ScienceDirect Topics

    This article reviews third-generation blood pumps, focusing on the magnetic-levitation (maglev) system. The maglev system can be categorized into three types: (i) external motor-driven system, (ii) direct-drive motor-driven system, and (iii) self-bearing or bearingless motor system. In the external motor-driven system, Terumo (Ann Arbor, MI, U.S.A.) DuraHeart is an example where the impeller ...

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  • Third-generation blood pumps with mechanical

    1993-3-1 · Read 'Mechanical Blood Traumatization by Tubing and Throttles in In Vitro Pump Tests: Experimental Results and Implications for Hemolysis Theory, Artificial Organs' on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at …

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  • NASA - Blood Pump

    The invention presents a highly efficient blood pump to be used as a replacement for a ventricle of the human heart to restore people disabled by heart disease. The mechanical drive of the present invention is designed to operate in conjunction with a thermoelectric converter power source. The mechanical drive system essentially converts the output of a rotary motor into pulsatile motion so ...

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  • Mechanical Blood Traumatization by Tubing and

    Mechanical blood traumatization by tubing and throttles in in vitro pump tests: experimental results and implications for hemolysis theory. Schima H(1), Müller MR, Tsangaris S, Gheiseder G, Schlusche C, Losert U, Thoma H, Wolner E. Author information: (1)Second Department of …

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  • US3896501A - Mechanical drive for blood pump -

    FIG. 1 presents a view of the blood pump and its mechanical drive. DESCRIPTION OF THE PREFERRED EMBODIMENT The blood pump and its driving mechanism are shown in FIG. 1. The flexible shaft 11 from a power source converter enters the pump assembly and drives a flywheel 12 through a set of right angle bevel gears 13. The flywheel which has a ...

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  • Mechanical blood traumatization by tubing and

    2020-6-9 · The altered blood flow in venous valves induced by the insufficient efficacy of the muscle pump is commonly considered as a main factor. However, it is still a great challenge to observe the altered blood flow in real time, and its role in the formation of thrombi is poorly understood.

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  • (PDF) Axial flow artificial heart blood pumps: A brief

    Mechanical blood traumatization by tubing and throttles in in vitro pump tests: experimental results and implications for hemolysis theory. Schima H(1), Müller MR, Tsangaris S, Gheiseder G, Schlusche C, Losert U, Thoma H, Wolner E. Author information: (1)Second Department of …

    Get Price
  • Artificial Heart Valve at Best Price in India

    FIG. 1 presents a view of the blood pump and its mechanical drive. DESCRIPTION OF THE PREFERRED EMBODIMENT The blood pump and its driving mechanism are shown in FIG. 1. The flexible shaft 11 from a power source converter enters the pump assembly and drives a flywheel 12 through a set of right angle bevel gears 13. The flywheel which has a ...

    Get Price
  • Mechanical blood traumatization by tubing and

    2012-8-6 · A step towards this goal is better understanding of the relationships between shear stress, exposure time, and blood damage and, from there, the development of numerical models for the different types of blood damage to enable the design of improved VADs.

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  • Educational Lab Equipment Manufacturer,Science Lab ...

    2020-11-5 · Nikkiso Cryo Inc. New Facility Increases Cryogenic Pump Production. FOR IMMEDIATE RELEASE Las Vegas, NV, April 13, 2021 – Nikkiso Cryo Inc. (NCI), Las Vegas NV, a member of Nikkiso Clean Energy and Industrial Gases Group (Group), a part of Nikkiso Co., Ltd (Japan) announces their new facility which increases their cryogenic pump production ...

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  • Mechanical drive for blood pump - THE UNITED

    2021-6-24 · Gilbarco Veeder-Root offers the widest range of fuel dispensers and pumps in the Middle East and Africa. With various configurations that address your site or network's needs, you can rest assured that you're investing in a fueling dispenser that's ready to serve your through-put needs, and delight your customers.

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  • A Quantitative Comparison of Mechanical Blood

    2021-6-1 · Systemic arterial blood pressure and intracerebral hemorrhage after mechanical thrombectomy in anterior cerebral circulation Journal of Investigative Medicine ( IF 2.304) Pub Date : 2021-06-01, DOI: 10.1136/jim-2020-001554

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  • Dual-Axial Blood Pump Mechanical Circulatory

    2021-6-22 · The pump performance of these configurations was assessed using robust ANSYS CFX turbomachinery software. Over 150 simulations were performed over a range of blood flow rates and rotational speeds. Pressure rise, energy augmentation, and blood damage indices were determined for the pump geometries considered.

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  • Mechanical axial flow blood pump to support

    2018-1-26 · An initial design of the impeller for this axial flow blood pump was performed using computational fluid dynamics analysis, including pressure-flow characteristics, scalar stress estimations, blood damage indices, and fluid force predictions.

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  • Dual-Axial Blood Pump Mechanical Circulatory Support

    2016-8-18 · Dual-Axial Blood Pump Mechanical Circulatory Support for Fontan Patients Shravani Birewar The current treatment paradigm for patients with dysfunctional or failing single ventricle physiology involves pharmacologic therapy, surgical reconstruction of the Fontan physiology, and heart transplantation. The limited

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  • Numerical Design of a Partial-Support Axial Blood

    2019-11-20 · The flow velocity, hydraulic efficiency, exposure time, scalar shear stress (SSS) and hemolytic performance of the axial blood pump was analyzed. The numerical results showed that the axial blood pump could produce a 1–8 Lpm flow rate with a 54.7–186.7 mmHg pressure head when the pump rotating from 9000 to 13000 rpm.

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  • Computer Modeling of Fluid-Stress-Induced Blood

    2010-7-8 · Therefore, it is essential to evaluate levels of blood trauma for successful design of a mechanical Ventricular Assist Device. Estimating the fluid stress levels that occur in a blood pump during the design phase also provides valuable information for optimization considerations.

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  • Optical Dynamic Analysis of Thrombus Inside a

    2017-3-20 · Optical Dynamic Analysis of Thrombus Inside a Centrifugal Blood Pump During Extracorporeal Mechanical Circulatory Support in a Porcine Model. Fujiwara T 1, Sakota D 2, Ohuchi K 3, Endo S 4, Tahara T 5, Murashige T 6, Kosaka R 2, Oi K 1, Mizuno T …

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  • Artificial heart | Britannica

    Mechanical engineers are responsible for the design, manufacture, and proper maintenance of machines and mechanical systems. A machine is defined by the Oxford Dictionary as “any device that transmits a force or directs its application,” but a less technical definition is that machines are simply anything that moves or has moving parts. When you consider just how much of our fast-moving ...

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  • Al-Jazari: The Mechanical Genius - Muslim

    2021-6-3 · Why was mucor endemic in India even before Covid? Baseline prevalence was 14 cases/100,000 people, almost 70 times the global prevalence of 0.2/100,000.. Mucor is a …

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  • Dual-Axial Blood Pump Mechanical Circulatory

    2021-6-22 · The pump performance of these configurations was assessed using robust ANSYS CFX turbomachinery software. Over 150 simulations were performed over a range of blood flow rates and rotational speeds. Pressure rise, energy augmentation, and blood damage indices were determined for the pump geometries considered.

    Get Price
  • Dual-Axial Blood Pump Mechanical Circulatory Support

    2016-8-18 · Dual-Axial Blood Pump Mechanical Circulatory Support for Fontan Patients Shravani Birewar The current treatment paradigm for patients with dysfunctional or failing single ventricle physiology involves pharmacologic therapy, surgical reconstruction of the Fontan physiology, and heart transplantation. The limited

    Get Price
  • Numerical Design of a Partial-Support Axial Blood

    2019-11-20 · The flow velocity, hydraulic efficiency, exposure time, scalar shear stress (SSS) and hemolytic performance of the axial blood pump was analyzed. The numerical results showed that the axial blood pump could produce a 1–8 Lpm flow rate with a 54.7–186.7 mmHg pressure head when the pump rotating from 9000 to 13000 rpm.

    Get Price
  • CentriMag Circulatory Support System - P170038 | FDA

    The Next Wave of Mechanical Circulatory Support Devices. Next-generation mechanical circulatory support devices in different phases of development and clinical use are anticipated to improve outcomes and quality of life in patients with advanced heart failure. By Carlo R. Bartoli, MD, PhD, and Robert D. Dowling, MD, PhD (Hon) View PDF Reprints.

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  • The Next Wave of Mechanical Circulatory Support

    2019-5-14 · Pump Development20 2.5.1 Current Work on Designs of VAD Mechanical Blood Pump21 3 RESEARCH METHODOLOGY 27 3.1 Flow chart of Research27 3.2 Details of Constructing the Model Geometries29 3.2.1 Blood Pump Operational Requirements29 3.2.2 Model Geometry Details29 3.2.2.1 Impeller Geometry30 3.2.2.2 Spiral Groove Profile32 3.2.2.3 Volute Geometry36

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  • NUMERICAL INVESTIGATION OF IMPELLER DESIGN

    2012-8-6 · A step towards this goal is better understanding of the relationships between shear stress, exposure time, and blood damage and, from there, the development of numerical models for the different types of blood damage to enable the design of improved VADs.

    Get Price
  • A Quantitative Comparison of Mechanical Blood

    Micro Pipette, Variable Micro Pipette, Transfer Micro Pipette manufacturer supplier in China, offering Mechanical Adjustable Blood Gilson Pipettes Pasteur, Easy Industrial Natural Plant Vacuum Essential Oil Extractor Extraction Machine for Sale Simple Distillation Unit, Lab Small Essential Oil Steam Distillation Set Apparatus for Making Essential Oils Extractor Distiller 20 L Equipment for ...

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  • China Mechanical Adjustable Blood Gilson Pipettes

    Printing, Industrial, Transportation and More. Learn more. 50+ Years of Innovation. Micropump Legacy. Founded in 1960 by Tom Martin, the actual inventor of the magnetic drive gear pump, Micropump has continued to lead and develop innovative pumping solutions for over fifty years.

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