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roller pump vs centrifugal pump

Roller Versus Centrifugal Pumps Perfusion

2020-5-12  For example there are studies demonstrating centrifugal pumps being more gentle (less hemolytic, etc.), however there are studies that conclude that even a poorly occlusive roller pump is less hemolytic than centrifugal pumps.

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Roller and Centrifugal Pumps: A Retrospective

2021-7-12  Roller pumps produce peristaltic flow by displacement of fluid from an occlusive rotor applied against a compressible tube. Centrifugal pumps convert rotational energy from a rotor spinning between 2,000 and 4,000 revolutions into kinetic energy as the fluid is thrown radially by “centrifugal” force.

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The Impact of Roller Pump vs. Centrifugal Pump on

Centrifugal pumps are considered to be less destructive to blood elements (1) when compared to roller pumps. However, their large prime volumes render them unsuitable as arterial pumps in heart lung machine (HLM) circuitry for children.

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Centrifugal vs. Rollerhead Pump? Which is Safer

2015-9-25  A number of investigators have performed in vitro studies comparing centrifugal pumps and roller pumps in terms of blood handling during short- and long-term use.139 –148 Several studies reported less hemolysis with the centrifugal pump when tested in vitro. 139 –142 Tamari et al. examined hemolysis under various flow and pressure conditions in an in vitro model using porcine blood and

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Centrifugal versus roller head pumps for

2002-12-1  The centrifugal pump was a Medtronic Bio-Pump Model 550 with a BP-80 head (Medtronic Australasia Pty Ltd, Sydney, Australia), and the roller was a Cobe Precision Blood Pump (Cobe Cardiovascular, Inc, Arvada, CO) using 0.5-inch PVC tubing.

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Centrifugal versus roller head pumps for

Interventions: Patients were randomized into group C (centrifugal pump for cardiopulmonary bypass; n = 54) and group R (roller pump for cardiopulmonary bypass; n = 49). Measurements and Main Results: A neuropsychologic test battery of 6 standard tests was administered before surgery and 5 days after surgery. An abnormal test result was defined

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Comparison of the centrifugal and roller pump in

2018-6-15  Objective—Evaluation of the centrifugal pump vs roller pump concerning effects upon platelet function, hemolysis and clinical outcome in elective coronary artery bypass surgery.. Design—Thirty‐four patients were randomized to centrifugal or roller pump.Platelet activation was studied by flow cytometry before, during and up to 3 days after bypass.

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The Impact of Roller Pump vs. Centrifugal Pump on

2017-3-1  The Roller Group consisted of either a small diameter (<7 kg) or large diameter (>7 kg) mast-mounted roller pump attached to a control panel (Figure 2). A schematic of the centrifugal (Figure 3) and roller circuit (inset) illustrates the more simplistic circuitry, in addition to the reduction in circuit prime volume. A continuous auto transfusion system was set up in all Centrifugal Group cases.

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(PDF) The Impact of Roller Pump vs. Centrifugal Pump

Centrifugal pumps are considered to be less destructive to blood elements (1) when compared to roller pumps. However, their large prime volumes render them unsuitable as arterial pumps

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How to Choose the Right Roller Pump Sprayer

2019-2-25  A roller pump has 4 to 8 rollers depending on the model, that revolve inside the pump housing to force the spray solution out to the nozzle. These pumps operate at PTO speeds of 540 and 1000 RPM a definite point to note for choosing the right pump. Roller pumps have a pressure range up to 300 psi and flow rates up to 74 GPM. These products easily adapt to PTO or gas engine drives.

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Comparison of the centrifugal and roller pump in

2018-6-15  Objective—Evaluation of the centrifugal pump vs roller pump concerning effects upon platelet function, hemolysis and clinical outcome in elective coronary artery bypass surgery.. Design—Thirty‐four patients were randomized to centrifugal or roller pump.Platelet activation was studied by flow cytometry before, during and up to 3 days after bypass.

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Superiority of centrifugal pump over roller pump in

1998-5-1  The centrifugal pump resulted in lower plasma free haemoglobin (mean±SD, 50±23 vs. 72±35 mg/dl, P<0.01), higher platelet count (133.1±34.8 vs. 63.5±29.6×10 9 /l, P<0.01), less platelet activation (β-TG 1253±633 vs. 1657±677 ng/ml; P<0.05), less cytokine release (IL-6 329±57 vs. 392±59 pg/ml; P<0.05), and reduced levels of C3a (4822±

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(PDF) The Impact of Roller Pump vs. Centrifugal Pump

PDF Centrifugal pumps are considered to be less destructive to blood elements (1) when compared to roller pumps. However, their large prime volumes Find, read and cite all the research you

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Investigating the effects of two different pump heads

Investigating the effects of two different pump heads (Centrifugal vs. Roller Pump) on hematological and immunological mechanisms. Demirtas H(1), Iriz E(1), Demirtas CY(2), Erer D(1), Oktar L(1), Yener A(1), Arslan M(3). Author information: (1)Department of Cardiovascular Surgery, Gazi University Medical Faculty, Ankara, Turkey.

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Viewing a thread Roller or centrifugal pump for

2011-5-29  As for drive systems, the hydraulic is the most efficient. The engine can be run at lower rpms than a pto driven pump and a drive shaft isn't needed. Be sure to get the one that matches to the tractor hydraulic system. I used to have a sprayer with a roller pump. Spraying with a centrifugal is a joy compared to what that roller pump was.

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A single center’s conversion from roller pump to

2016-6-5  Centrifugal pump technology is more compact and may generate less heat and hemolysis than a conventional roller pump. Based on the potential advantages of centrifugal pumps, a decision was made institution-wide to convert to centrifugal pump technology in pediatric implementation of ECMO.

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Peristaltic Pump vs Centrifugal Pump

2018-7-5  Centrifugal pump refers to the pump that transfers the liquid by the centrifugal force generated when the impeller rotates. A peristaltic pump is like a fluid-filled hose squeezed with a finger, and the fluid moves forward as the finger slides forward. The peristaltic pump is also a principle that only replaces the finger with the roller.

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Peristaltic Pump vs Centrifugal Pump

Peristaltic Pump vs Centrifugal Pump. The pump is a relatively large industry and has different divisions according to different standards. The basic categories include pumps, solar pumps, peristaltic pumps, centrifugal pumps, gear pumps, and so on.Today we will introduce you to the peristaltic pump and centrifugal pump.

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Positive Displacement vs Centrifugal Pumps Guide

2021-8-5  Positive Displacement vs Centrifugal Pumps There are two main families of pumps; positive displacement and centrifugal (rotodynamic), both of which have their uses and best areas of application. It is important however to be able to identify when each pump type should be selected, which ultimately comes down to their working principle and the

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How to select the right sprayer pump Farm Progress

2018-10-15  The six common pump types are: centrifugal, diaphragm, roller, transfer, piston, and irrigation-injection. These modern sprayer pumps produce a wide-use range of max GPM flow rates, pump PSI pressures, sizing and installation dimensions, manufacturing material and shaft rotation mounting options, and many have multiple power sources to choose

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Comparison of the centrifugal and roller pump in

2018-6-15  Objective—Evaluation of the centrifugal pump vs roller pump concerning effects upon platelet function, hemolysis and clinical outcome in elective coronary artery bypass surgery.. Design—Thirty‐four patients were randomized to centrifugal or roller pump.Platelet activation was studied by flow cytometry before, during and up to 3 days after bypass.

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Centrifugal Pump and Roller Pump in Adult Cardiac

Centrifugal pump (CP) and roller pump (RP) designs are the dominant main arterial pumps used in cardiopulmonary bypass (CPB). Trials reporting clinical outcome measures comparing CP and RP are controversial. Therefore, a meta-analysis was undertaken to evaluate clinical variables from randomized controlled trials (RCTs).

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COMPARISON OF A CENTRIFUGAL PUMP WITH A

2021-7-31  The rise in plasma free HB above baseline was greater for the centrifugal pump than for the peristaltic pump, with a peak change in free Hb of 17.5gm/dl for group A vs 8 gm/dl for group B (p<0.01). An hemolysis index (peak Hb-baseline/total bypass time)

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Superiority of centrifugal pump over roller pump in

This study compares the effects of the Medtronic Biomedicus centrifugal pump with conventionally used roller pump in routine cardiopulmonary bypass in infants and children. METHODS: Between June 1996 and March 1997, 42 children (aged 2 days-13 years) undergoing elective cardiac surgery were assigned to either centrifugal or roller pump bypass.

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Viewing a thread Roller or centrifugal pump for

2011-5-29  As for drive systems, the hydraulic is the most efficient. The engine can be run at lower rpms than a pto driven pump and a drive shaft isn't needed. Be sure to get the one that matches to the tractor hydraulic system. I used to have a sprayer with a roller pump. Spraying with a centrifugal is a joy compared to what that roller pump was.

get price

Roller Pump an overview ScienceDirect Topics

A roller pump requires a bladder or reservoir between the venous cannula and the pump and utilizes gravity for drainage into the reservoir. Centrifugal pumps do not require gravity, so they can be placed at any height in relation to the patient. Centrifugal pumps can generate very high negative pressures, which may cause hemolysis.

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Peristaltic Pump vs Centrifugal Pump

2018-7-5  Centrifugal pump refers to the pump that transfers the liquid by the centrifugal force generated when the impeller rotates. A peristaltic pump is like a fluid-filled hose squeezed with a finger, and the fluid moves forward as the finger slides forward. The peristaltic pump is also a principle that only replaces the finger with the roller.

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Roller Pump an overview ScienceDirect Topics

Ali Ostadfar PhD, in Biofluid Mechanics, 2016. 5.1.2 Displacement Blood Pump. The roller pump comes under the category of positive displacement pumps and has been the most commonly used pump for CPB for the past 50 years. The golden era of this pump is passing due to developments in systems using radial (centrifugal) pumps. The roller pump contains a tubing placed inside a curved wall.

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Peristaltic Pump vs Centrifugal Pump

Peristaltic Pump vs Centrifugal Pump. The pump is a relatively large industry and has different divisions according to different standards. The basic categories include pumps, solar pumps, peristaltic pumps, centrifugal pumps, gear pumps, and so on.Today we will introduce you to the peristaltic pump and centrifugal pump.

get price

Roller Pumps Dual Pumps

Hypro 12V Motor Driven Roller Pumps. Flows 22.3 to 37.5 Lpm. Pressure 3.5 to 6.2 Bar. 4-roller pump with super rollers. 60°C max fluid temperature.

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