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M. Alizadeh, M. Cote, A. Branzan Albu, Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision 2022
...Our experimental setup to collect high-quality videos and pressure and velocity data involves tricupsid BHVs mounted in the Pulse Duplicator device from ViVitro Labs...Experiments on four cases that include three different tricuspid BHVs yielded promising results, with the DTW scores showing a good coherence with respect to the simulations...
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceM. Marin-Cuartas, Y. Zhu, A. M. Imbrie-Moore, M. H. Park, R. J. Wilkerson, M. Leipzig, P. K. Pandya, M. J. Paulsen, M. A. Borger, Y. J. Woo, Interactive CardioVascular and Thoracic Surgery (2021) 1–9
...The severity of acute papillary muscle (PM) rupture varies according to the extent and site of the rupture. However, the haemodynamic effects of different rupture variations are still poorly understood...A 3D printer (Carbon 3D, Redwood City, CA, USA) was used to prototype a modular left heart (left atrium and ventricle) and was mounted to a pulsatile linear piston pump (ViVitro Superpump; ViVitro Labs, Victoria, BC, Canada)...
Other Products Cited: Heart Valve Repair SuperPump
Visit SourceA. Imbrie-Moore, Y. Zhu, T. Bandy-Vizcaino, M. Park, R. Wilkerson, Y. Woo, Annals of Biomedical Engineering, 49
Driven by a pulsatile linear piston pump (ViVitro Superpump, ViVitro Labs, Victoria, BC, Canada) which generates physiologic hemodynamics in accordance with ISO 5840 in vitro cardiac valve testing standards.
Other Products Cited: Heart Valve Repair SuperPump
Visit SourceB. Ncho, A. Siefert, V. Sadri, J. Ortner, A. Yoganathan. Journal or Med. Devices
The physiologic pressures and flows were achieved by adjustment of systemic resistance and compliance elements, and flow driven from a piston pump (Vivitro Labs Inc. Victoria, Canada).
Other Products Cited: Flow Visualization Heart Valve Testing SuperPump
Visit SourceP. Yu, V. Durgesh, Journal of Biomechanical Engineering, 5
The inflow conditions are precisely controlled using a ViVitro SuperPump system where nondimensional fluid parameters such as peak Reynolds number (Rep) and Womersely number (α) are varied from 50–270 and 2–5, respectively.
Other Products Cited: Flow Visualization SuperPump
Visit SourceJ. Westenberg, H. van Assen, P. van den Boogaard, J. Goeman, H. Saaid, J. Voorneveld, J. Bosch, S. Kenjeres, T. Claessens, P. Garg, M. Kouwenhoven, H. Lamb, Magnetic Resonance in Medicine
A pulsatile hydraulic piston pump (Vivitro Labs, Victoria, Canada) was connected to the tank with semirigid tubing. This pump, positioned outside the scanner room, generated a sinusoidal-like pulsatile waveform with 70-bpm frequency without net flow, resulting in a pressure waveform inside the tank that created contraction of the filled LV phantom with a 300-ms systolic period and 50-mL stroke volume.
Other Products Cited: Flow Visualization SuperPump
Visit SourceR. Whiting, E. Sander, C. Conway, T. J. Vaughan. 2021.
...To evaluate the hydrodynamic performance of each valve, in vitro bench testing was performed using a Vivitro Pulse Duplicator (Figure 2a) (Vivitro Labs, Inc. Victoria, B.C.) according to ISO 5840...
Other Products Cited: Pulsatile Flow Simulation Pulse Duplicator
Visit SourceS. Zhan-Moodie, D. Xu, K. S. Suresh, Q. He, D. Onohara, K. Kalra, R. A. Guyton, E. L. Sarin, M. Padala. JTCVS Open.
...actuating pump with a viscoelastic impedance (Superpump, Vivitro Labs, London, ON) was connected to the LV, and programmed to generate physiological left ventricular pressures. 0.9% saline was used as the working medium in this flow loop...
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Visit SourceC. D. Hsu, A. Mirza, R. Matheny, S. Ramaswamy. Structural Heart. Vol. 5.
...hydrodynamic testing of the valves mounted in mitral and tricuspid positions were performed using a pulse duplicator system (ViVitro Labs) using 0.9% saline solution...
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceF. Stieglmeier, M. Grab, F. König, J. Büch, C. Hagl, N. Thierfelder. Journal of the Mechanical Behavior of Biomedical Materials. Vol. 118.
… was applied, was documented. 2.9. Durability testing. To investigate the long-term durability, patches were tested in a modified high-cycle (HC) system (HiCycle Durability Tester; ViVitro Labs Inc., Victoria, CAN). A 3D printed …
Other Products Cited: HiCycle Durability Tester Tissue Engineering
Visit SourceP. Yu, V. Durgesh, T. Xing, R. Budwig. Journal of Biomedical Engineering. Vol. 143.
… vectors in the sac region. 3.3 Pump System. To generate controlled inflow conditions for this study, a piston pump (ViVitro Labs Inc. SuperPump Sys- tem AR Series, Victoria, BC, Canada) was used. The piston pump system …
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Visit SourceK. Busink
...the Vivitro pump, labeled F, (SuperPump, ViVitro labs,Victoria, Canada) was used to create the oscillatory waveform...
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Visit SourceJ. Van der Hoek
...a hydraulic piston pump (SuperPump, ViVitro labs, Victoria, Canada) was used to generate the pulsatile flow and...
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Visit SourceA. Packy, G. A. D'Souza, M. Farahmand, L. Herbertson, C. G. Scully. Cardiovascular Engineering and Technology.
… Pressure measurement location. ºFlow measurement location. Full size image. Deionized water is circulated through the MCL using a piston pump [ViVitro Labs, Victoria, BC, Canada] that is fluid-coupled to a suspended silicone-based mock ventricular sac …
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Visit SourceN Norris, K Lewis, C Settanni, T Becker, A Ducruet. Journal of Neurointerventional Surgery. Volume 13 Issue Suppl 1.
...physiologically-relevant patient flow parameters were tuned within the system using a Super Pump AR (ViVitro Labs). A data acquisition system (DAQ) with LabVIEW® software recorded real time pressure and flow waveforms, mean arterial pressures (MAP) and flows through each inlet and outlet branch of the 3D-printed CW model. The flow model included an introducer for microcatheter and device delivery access...
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Visit SourceOmid Bafkar, Gary Rosengarten, Milan.J. Patel, Daniel Lester, Hadrien Calmet, Vu Nguyen, Stefan Gulizia, Ivan.S. Cole, Effect of inhalation on oropharynx collapse via flow visualisation, Journal of Biomechanics, Volume 118, 2021, 110200, ISSN 0021-9290, https://doi.org/10.1016/j.jbiomech.2020.110200.
… Fluorescent spherical particles (500-600 µm diameter, Cospheric LLC, Santa Barbara, USA) were injected into the head of a piston-driven SuperPump (Vivitro Labs, Victoria, Canada) that was connected to an …
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Visit SourceAnnabel M. Imbrie-Moore, Cole C. Paullin, Michael J. Paulsen, Frederick Grady, Hanjay Wang, Camille E. Hironaka, Justin M. Farry, Haley J. Lucian. Y. Joseph Woo - Medical Engineering & Physics Available online 31 January 2020
...This work shows the design and implementation of a 3D-printed valve dilation device to preferentially dilate the posterior mitral valve annulus... ...In brief, a custom 3D-printed left heart chamber (Fig. 2A) was mounted to a pulsatile linear piston pump (ViVitro Superpump, ViVitro Labs, Victoria, BC, Canada) with the ability to generate physiologic conditions … ...this annular dilation device provides the means to investigate the design and optimization of novel annuloplasty rings....
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Visit SourceJason Voorneveld, Hicham Saaid, Christiaan Schinkel, Nikola Radeljic, Boris Lippe, Frank J.H. Gijsen, Antonius F.W.van der Steen, Nico de Jong, Tom Claessens, Hendrik J. Vos, Sasa Kenjeres, Johan G. Bosch - Elsevier Ultrasound in Medicine & Biology - Available online 8 January 2020
Left ventricular (LV) blood flow is an inherently complex time-varying 3-D phenomenon, where 2-D quantification often ignores the effect of out-of-plane motion. In this study, we describe high frame rate 4-D echocardiographic particle image velocimetry (echo-PIV) using a prototype matrix transesophageal transducer and a dynamic LV phantom for testing the accuracy of echo-PIV in the presence of complex flow patterns.... … 1a). The mitral and aortic tracts of the LV were connected to atrial and compliance chambers (transparent acrylic, built in-house), which were connected via a tube with an adjustable resistance valve (ViVitro Labs … ... We demonstrate that 4-D echo-PIV could be performed in just four heart cycles, which would require only a short breath-hold, providing promising results. However, methods for resolving high velocity gradients in regions of poor spatial resolution are required before clinical translation....
Other Products Cited: Flow Visualization Pulse Duplicator
Visit SourceJae H. Lee, Alex D. Rygg, Ebrahim M. Kolahdouz, Simone Rossi, Stephen M. Retta, Nandini Duraiswamy, Lawrence N. Scotten, Brent A. Craven, and Boyce E. Grith -
Computer modeling and simulation (CM&S) is a powerful tool for assessing the performance of medical devices such as bioprosthetic heart valves (BHVs) and promises to accelerate device design and regulation. This study describes work to develop dynamic computer models of BHVs in the aortic test section of an experimental pulse duplicator platform that is used in academia, industry, and regulatory agencies to assess BHV performance... ...This work represents a step towards the experimental validation of this FSI modeling platform for evaluating BHVs.... … In vitro experiments are performed using two different experimental platforms, including a ViVitro Pulse Duplicator (ViVitro Labs, Inc., Victoria, BC, Canada) available through the FDA Cardiac Device Flow Lab and a customized …
Other Products Cited: Heart Valve Testing Pulsatile Flow Simulation Pulse Duplicator
Visit SourceFeng Guo (郭峰)Chang Liu (刘唱)Rizheng Han (韩日峥)Qiang Lu (吕强)Yun Bai (白芸)Rui Yang (杨锐)Dun Niu (牛盾)Email authorXing Zhang (张兴) -Science China Materials
Herein, two types of silk fibroin (SF) fiber membranes with anisotropic (ASF) and isotropic (ISF) properties were prepared by electrospinning, and were further combined with poly(ethylene glycol) diacrylate (PEGDA) hydrogels to serve as polymeric heart valve (PHV) substitutes (PEGDA-ASF and PEGDA-ISF)... ...The PHVs from both PEGDA-ASF and PEGDA-ISF presented appropriate hydrodynamic properties from pulse duplicator tests according to the ISO 5840-3 standard.... ...The Gauss curvature analysis also indicated that the anisotropic PEGDA-ASF valve can produce appropriate surface morphology by dynamically adjusting the movement of bending area during the opening process... … 1c, d). Pulse duplicator tests In vitro hemodynamic properties of PHVs were tested in a 0.9% saline solution using a pulse duplicator system (Vivitro Labs, Inc., British Columbia, Canada) according to the ISO 5840-3 standard [21] …
Other Products Cited: Heart Valve Testing Pulse Duplicator
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