Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Generator Voltage Control01:21

Generator Voltage Control

700
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
700
Energy Supply for Muscle Contraction01:25

Energy Supply for Muscle Contraction

5.9K
Skeletal muscle fibers have the unique ability to switch between rest and contraction states, using different sources of ATP for energy. The contraction cycle and Ca2+ transport back into the sarcoplasmic reticulum for relaxation require significant ATP. However, the ATP reserves in muscle fibers are limited and can only sustain contractions for a few seconds. Additional ATP production becomes necessary for prolonged contractions. As a result, muscle fibers generate ATP through various sources,...
5.9K
Three-Phase Voltages01:30

Three-Phase Voltages

638
A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
638
Van de Graaff Generator01:15

Van de Graaff Generator

2.5K
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
2.5K
Electrical Energy01:10

Electrical Energy

1.8K
Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules.
1.8K
Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

714
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
714

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Can heat therapy help patients with heart failure?

Artificial organs·2020
Same author

In Vitro Assessment of Electric Currents Increasing the Effectiveness of Vancomycin Against Staphylococcus epidermidis Biofilms.

Artificial organs·2015
Same author

A fenestrated aortic valve contributing to iatrogenic aortic insufficiency post mitral valve replacement.

Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology·2015
Same author

Medical device market in China.

Artificial organs·2015
Same author

Investigation of low-voltage pulse parameters on electroporation and electrical lysis using a microfluidic device with interdigitated electrodes.

IEEE transactions on bio-medical engineering·2014
Same author

Electrical lysis: dynamics revisited and advances in On-chip operation.

Critical reviews in biomedical engineering·2013

Related Experiment Video

Updated: Feb 23, 2026

Revealing Electromechanical Control of Tissue Homeostasis Using a Two-Layer Microfluidic Device
11:08

Revealing Electromechanical Control of Tissue Homeostasis Using a Two-Layer Microfluidic Device

Published on: September 19, 2025

1.2K

Transcutaneous Energy Transfer with Voltage Regulation for Rotary Blood Pumps.

Tofy Mussivand1, Kevin S Holmes1, Albert Hum1

  • 1Cardiovascular Devices Division, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.

Artificial Organs
|September 5, 2017
PubMed
Summary

A novel transcutaneous energy transfer (TET) system uses infrared feedback for stable voltage regulation in rotary blood pumps. This technology eliminates percutaneous leads, potentially improving patient quality of life.

Keywords:
Infrared communications-Power transferRotary blood pump-Transcutaneous energy transfer-Voltage regulation-

More Related Videos

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

10.1K
Author Spotlight: Advancing Varicocele Treatment with Neuromuscular Electrical Stimulation
03:19

Author Spotlight: Advancing Varicocele Treatment with Neuromuscular Electrical Stimulation

Published on: August 30, 2024

1.3K

Related Experiment Videos

Last Updated: Feb 23, 2026

Revealing Electromechanical Control of Tissue Homeostasis Using a Two-Layer Microfluidic Device
11:08

Revealing Electromechanical Control of Tissue Homeostasis Using a Two-Layer Microfluidic Device

Published on: September 19, 2025

1.2K
In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

10.1K
Author Spotlight: Advancing Varicocele Treatment with Neuromuscular Electrical Stimulation
03:19

Author Spotlight: Advancing Varicocele Treatment with Neuromuscular Electrical Stimulation

Published on: August 30, 2024

1.3K

Area of Science:

  • Biomedical Engineering
  • Medical Devices
  • Energy Transfer Systems

Background:

  • Rotary blood pumps necessitate consistent operating voltage for optimal function.
  • Percutaneous leads pose infection risks and reduce patient quality of life.
  • Existing transcutaneous energy transfer (TET) systems may lack precise voltage regulation.

Purpose of the Study:

  • To develop and evaluate a voltage-regulated TET system for rotary blood pumps.
  • To eliminate the need for percutaneous connections in implanted devices.
  • To assess the performance of infrared feedback for transcutaneous power delivery.

Main Methods:

  • Development of a TET system utilizing an 890 nm infrared feedback control loop.
  • In vitro testing to evaluate voltage regulation under varying power loads and coil separations.
  • Measurement of power transfer efficiency across different coil separations and output currents.

Main Results:

  • The TET system maintained output voltage within 0.2 V of the nominal 14.5 V.
  • Stable operation was achieved for delivered powers up to 50 W and coil separations of 3-10 mm.
  • Power transfer efficiency ranged from 68% to 72% for output currents of 1.5-3.6 A.

Conclusions:

  • The developed TET system effectively regulates voltage for rotary blood pumps without percutaneous leads.
  • Infrared feedback provides a reliable method for transcutaneous power regulation.
  • Integration with rotary blood pumps could significantly enhance recipient quality of life.