This study addresses the increasing global need for upper limb prostheses (ULPs), particularly those controlled by electroencephalogram (EEG) signals, due to rising number of amputations. Focusing on an EEG signal acquisition system integrated with a machine learning (ML)-driven pattern recognition framework, research investigates control robotic ULP. The is divided into two phases: data and using ensemble K-nearest neighbors (KNN), support vector machines (SVM), artificial neural networks...

Abstract: A new dual impeller centrifugal blood pump has been developed as a research collaboration between Baylor College of Medicine and Institute Dante Pazzanese Cardiology for long‐term left ventricle assist device (LVAD). design feature this is that aims to minimize stagnant flow pattern around the inlet port. Several different materials were tested in order adopt double pivot bearing originally by Prof. Dr. Yukihiko Nosé from Medicine. Hydraulic performance tests conducted with two...

Abstract This article presents improvement on a physical cardiovascular simulator (PCS) system. Intraventricular pressure versus intraventricular volume (PxV) loop was obtained to evaluate performance of pulsatile chamber mimicking the human left ventricle. PxV shows heart contractility and is normally used performance. In many diseases, stroke decreases because low contractility. pathological situation must be simulated by PCS in order assistance provided ventricular assist device (VAD)....

Abstract An implantable centrifugal blood pump has been developed with original features for a left ventricular assist device. This is part of multicenter and international study the objective to offer simple, affordable, reliable devices developing countries. Previous computational fluid dynamics investigations wear evaluation in bearing system were performed followed by prototyping vitro tests. In addition, previous tests assessment normalized index hemolysis show results 0.0054 ± 2.46 ×...

Scientific and technological advances in blood pump developments have been driven by their importance cardiac patient treatments the expansion of life quality assisted people. To improve optimize design development, numerical tools were incorporated into analyses these mechanisms become indispensable advances. This study analyzes flow behavior with low impeller Reynolds number, for which there is no consensus on full development turbulence ventricular assist devices (VAD). For supporting...

In the development of a ventricular assist device, computational fluid dynamics (CFD) analysis is an efficient tool to obtain best design before making final prototype. this study, different designs centrifugal blood pump were developed investigate flow characteristics and performance. This study assumed as being incompressible homogeneous Newtonian fluid. A constant velocity was applied at inlet; no slip boundary conditions device wall; pressure outlet. The CFD code used in work based on...

Abstract Left ventricular assist devices (LVADs) have been used as a bridge to transplantation or destination therapy treat patients with heart failure (HF). The inability of control strategy respond automatically changes in hemodynamic conditions can impact the patients’ quality life. developed system/algorithm consists system that harmoniously adjusts pump speed without additional sensors, considering patient’s clinical condition and his physical activity. three layers: (a) Actuator...

Abstract One of the most important recent improvements in cardiology is use ventricular assist devices (VADs) to help patients with severe heart diseases, especially when they are indicated transplantation. The Institute Dante Pazzanese Cardiology has been developing an implantable centrifugal blood pump that will be able a sick human keep flow and pressure at physiological levels. This device used as totally or partially VAD. Therefore, improvement on performance for betterment level...

Abstract A new model of blood pump for cardiopulmonary bypass (CPB) application has been developed and evaluated in our laboratories. Inside the housing is a spiral impeller that conically shaped threads on its surface. Worm gears provide an axial motion column. Rotational conical shape generates centrifugal pumping effect improves performance. One annular magnet with six poles inside impeller, providing magnetic coupling to brushless direct current motor. In order study performance, mock...

Abstract An implantable centrifugal blood pump ( ICBP ) is being developed to be used as a ventricular assist device VAD in patients with severe cardiovascular diseases. The system composed of pump, motor, controller, and power supply. electricity source provides the controller motor that moves pump's rotor through magnetic coupling. four parts: external conical house, base, impeller, impeller base. supported by pivot bearing system, its base responsible for sheltering permanent magnets. A...

Abstract Left Ventricular Assist Devices (LVADs) serve as both a bridge to transplantation and destination therapy for managing congestive heart failure (CHF). However, the existing control strategy's inability automatically adapt hemodynamic changes can significantly impact patient survival rates quality of life. Researchers have proposed various approaches achieve Physiological Control over LVADs (PC-LVAD). Despite promising results, implementing these strategies on computers faces...

Ventricular Assist Devices (VADs) play a crucial role in both bridging to transplantation and serving as destination therapy for congestive heart failure (CHF) management. This study aims address the limitations of existing control strategies VADs, specifically their inability adapt automatically hemodynamic changes. It proposes novel embedded cyber-physical system (CPS) based on real-time data processing, reconfigurable architecture, communication protocols aligned with Health 4.0 concepts...

Abstract: This work presents results of preliminary studies concerning application magnetic bearing in a ventricular assist device (VAD) being developed by Dante Pazzanese Institute Cardiology—IDPC (São Paulo, Brazil). The VAD‐IDPC has novel architecture that distinguishes from other known VADs. In this, the rotor conical geometry with spiral impellers, showing characteristics are intermediate between centrifugal VAD and an axial VAD. effectiveness this new type blood pumping principle was...

This article presents a back-electromotive force (BEMF)-based technique of detection for sensorless brushless direct current motor (BLDCM) drivers. The BLDCM has been chosen as the energy converter in rotary or pulsatile blood pumps that use electrical motors pumping. However, order to operate properly, driver needs know shaft position. Usually, information is obtained through set Hall sensors assembled close rotor and connected electronic controller by wires. Sometimes, large distance...

An implantable centrifugal blood pump has been developed with original features for a ventricle assist device (VAD). This is part of multicenter and international study objective to offer simple, affordable, reliable devices developing countries. Previous computational fluid dynamics investigations were performed followed by prototyping in vitro tests. Also, previous tests assessment hemolysis showed mean normalized index (NIH) results 0.0054 ± 2.46 × 10−3 mg/100 L (at 5 L/min 100 mm Hg). To...

The use of Left Ventricular Assist Devices (LVADs) has proven to be an effective treatment option for Congestive Heart Failure (CHF) patients who are not eligible heart transplantation. These devices can serve as a bridge transplantation (BTT) or destination therapy (DT). While LVADs operate at constant flow, this affect the patient's quality life and survival rate. To address issue, Health 4.0 (H4) developed new technological resources personalize control systems integrate medical into...

This paper presents a computational simulation and implementation of electromechanical actuator performance the Implantable Centrifugal Blood Pump (ICBP) as part speed controller study to avoid aortic valve stenosis. The ICBP Left Ventricular Assist Device (LVAD) is an device designed for long-term assist left heart in performing its functions. centrifugal pumps are controlled by varying rotor (impeller) speed. successful operation depends on appropriate rotational control system, ensuring:...

Abstract In previous studies, we presented main strategies for suspending the rotor of a mixed‐flow type (centrifugal and axial) ventricular assist device (VAD), originally by Institute Dante Pazzanese Cardiology (IDPC), Brazil. Magnetic suspension is achieved use magnetic bearing architecture in which active control executed only one degree freedom, axial direction rotor. Remaining degrees excepting rotation, are restricted attraction force between pairs permanent magnets. This study part...

The development of photosensitive ceramic slurries for vat photopolymerization (stereolithography or digital light processing) has received much effort in recent years. However, many these suspensions have high viscosity and they are suitable use only on equipment, specialized additive manufacturing. In this work, manufacturing using photocurable was tested a low-cost printer silicone moulds UV-casting replication, with the latter approach still scarcely explored literature. Both processes...

The permanent magnet brushless direct current motor (BLDC), have been the main component in most of Ventricular Assist Devices (VAD) development. An Implantable Centrifugal Blood Pump is being developed at Institute Dante Pazzanese Cardiology (IDPC) as VAD to assist patients with cardiovascular diseases. To develop a high performance controller necessary reliable virtual model BLDC. Toolbox SimPowerSystems software package was used study dynamic system. Permant Magnet Synchronous Machine...

Titanium is used in dental implants because of its properties as a biomaterial. Surface roughness very important and fundamental for obtaining required results biocompatibility. Dental with moderately rough surfaces are commonly the treatment edentulous patients. Aiming improvements productivity, experiments were conducted implant industry to evaluate influence machining parameters on surface implants. Samples different diameters machined specific their roughnesses measured, before after...

This paper shows the blood flow control (FwC) performance to adjust rotational speed of an ICBP (implantable centrifugal pump) in order provide adequate left ventricle different patient conditions.ICBP is a totally implantable LVAD (left ventricular assist device) with ceramic bearings developed for long term circulatory assistance.FwC uses PI (proportional-integral) flow.FwC does not use sensor feedback, as there estimation system measurement.Control strategy has being studied HCS (hybrid...