Products/Services for MRI Compatible Hydraulic Stepper Motors

  • Stepper Motors (rotary)-Image
    Stepper Motors (rotary) - (467 companies)
    Stepper motors are DC (direct current) electric motors designed for precise motion control. They consist of multiple sets of coils and magnets which are designed to allow rotor movement in angular increments called steps. Stepping can be done...
    Stepper Motor Construction
    DC Voltage
    Geared
  • Stepper Motor Drives-Image
    Stepper Motor Drives - (329 companies)
    Stepper motor drives power unipolar and bipolar stepper motors in full step, half step, and microstep motion control applications. Stepper motor drives are devices used to power and control stepper motors. While some basic drive units only supply...
  • Hydraulic Motors-Image
    Hydraulic Motors - (364 companies)
    Hydraulic motors are powered by pressurized hydraulic fluid and transfer rotational kinetic energy to mechanical devices. Hydraulic motors, when powered by a mechanical source, can rotate in reverse direction and act as a pump. Operating...
  • Motor Controllers-Image
    Motor Controllers - (793 companies)
    ...controllers. Full-step motors. Half-step motors. Mini-motors. Micro-motors. Unipolar stepper motors. Bipolar stepper motors. Pneumatic motion control systems. Hydraulic motion control systems. Selection Criteria. The Engineering360 SpecSearch database...
  • Hydraulic Pumps-Image
    Hydraulic Pumps - (689 companies)
    Hydraulic pumps deliver high-pressure fluid flow to the pump outlet. Hydraulic pumps are powered by mechanical energy sources to pressurize fluid. Hydraulic pumps are positive displacement pumps which pressurize hydraulic fluid in order to do work...
  •  
    DC Motors - (1244 companies)
    Configurations may include concave, round, square, hexagonal, splined, grooved, stepped, and screw types. Gearing is used in motors to increase or reduce shaft speed. It tends to decrease motor volume or weight. The types of gears that are used in DC motors...
  •  
    Hydraulic Cylinders - (813 companies)
    Hydraulic cylinders are actuation devices that utilize pressurized hydraulic fluid to produce linear motion and force. Video detailing operating specifications. Video Credit: AgriSupplyHowTo / CC BY-SA 4.0. Stroke- The distance that the piston...
  •  
    AC Motors - (1316 companies)
    ...to operate at a specific constant speed, in step with the rotating magnetic field. A synchronous motor is not a self-starting motor because torque is only developed when running at synchronous speed; it can be started with a DC motor on a common shaft...
  •  
    DC Motor Drives - (773 companies)
    ...or power modules that interface between a controller and a DC motor. They convert step and direction input from the controller to currents and voltages compatible with the motor. These units are sometimes called variable speed drives, referring...
  •  
    Hydraulic Valves - (684 companies)
    Hydraulic valves contain and transfer the flow and pressure of hydraulic fluid in hydraulic power systems. They range from simple shutoff valves to precision control valves. In their unpowered state, hydraulic valves can be normally open (open...

Product News

More Information

Lock Indicates content that may require registration and/or purchase. Powered by IHS Goldfire

  • Development of a dynamic heart phantom prototype for Magnetic Resonance Imaging
    The phantom must be composed of nonferrous materials in order to be MRI compatible . .... Stepper motors are utilized to produce precise motions; hydraulic actuation systems enable translating the motion to the phantom region since the ferrous components need to be at a safe distance of at least 3.5 meters (12 feet).
  • Development of a 2-DOF electrostatic haptic joystick for MRI/fMRI applications
    Since the electrostatic motor is a kind of synchronous motor like stepper motors , which facilitates open-loop position/velocity control, the design of the control system should be much easier compared to those of the ultrasonic motor and the hydraulic drive. .... Our previous study already revealed that the electrostatic motor is MR- compatible [17]. .... is expected that these characteristics enable to create well-controlled and -stabilized virtual dynamics during MRI /fMRI.
  • Electromechanical Design and Construction of a Rotating Radio-Frequency Coil System for Applications in Magnetic Resonance
    In addition to the pneumatic-type turbine employed in the present RRFC, some other commercially available drives that are MRI - compatible include piezoelectric and hydraulic motors and turbines. .... shows significant promise as a MR- compatible rotor for a RRFC system is the piezoelectric stepper motor.
  • A New Type of Motor: Pneumatic Step Motor
    The motor was designed to be compatible with magnetic resonance medical imaging equipment, for actuating an image-guided inter- vention robot, for medical applications. .... PneuStep is readily applicable to other pneu- matic or hydraulic precision-motion applications. .... Index Terms—Image-guided intervention, magnetic resonance imaging ( MRI ) compatibility, medical robotics, pneumatic hy- draulic motor, step motor, stepper .
  • Development of a differential actuator concept for MR-compatible robotic applications
    However, working in an MRI environment is very demanding due to severe material and space constraints. .... To avoid these limitations, a number of researchers have developed MR- compatible actuation methods using pneumatic, hydraulic , and ultrasonic components [3, 8-12, 15-19]. .... Pneumatic actuation methods have primarily focused on stepper - motor implementations [3, 8, 10, 15, 18, 20].
  • An MR-Conditional High-Torque Pneumatic Stepper Motor for MRI-Guided and Robot-Assisted Intervention
    Compared to hydraulic actuators, the risk management of using pneumatic actuator is easier, even in any undesired situation when air leakage takes place inside the MRI scanner. .... These advantages boost much research interest in development of such pneumatic actuation components for MR- compatible intervention devices.4 To provide precise actuations or manipulations of the pneumatic MR-conditional motors during MRI- guided treatments, such as needle biopsy29 or brachy-. .... In contrast, stepper actuator can operate and move discretely step-by-step without having to incorporate with…
  • Advances in Robotics and Virtual Reality
    Stoianovici et al. [37] described a MRI - compatible pneumatic stepper mo- tor PneuStep, which has a very low level of image interference. .... Generally, there are four actuation principles utilized in MRI applications, namely remote actuation, hydraulic , pneumatic and ultrasonic/piezoelectric…
  • Actuation methods for applications in MR environments
    Position control is difficult because of the delay and limited bandwidth due to the compressible me- dium, but can be achieved by using two or more pistons to actuate a wobble motor (41) or a sprocket wheel (42), both stepper motors . .... by three sequentially pulsed pneumatic pistons, leading to rotation, and tested compatibility with MRI as well as .... INNOMOTION™ has devel- oped an MR/CT compatible assistance system (IN- NOMEDIC, Germany), which is actuated over plastic .... V. HYDRAULIC TRANSMISSIONS AND ACTUATORS .
  • Obtaining Material Properties of the Plantar Soft Tissue for a Patient-Specific Finite Element Model of the Foot
    This probably requires finding existing hydraulic hoses and fittings that are MRI compatible . .... • Stepper motor driver software: Applied Motion Products, Inc.: Host Command Reference, Q and SCL commands for servo and stepper drives .
  • Urologic Robotic Surgery in Clinical Practice
    The Hopkins URobotics group has described two new types of pneumatic/ hydraulic motors that may enable the develop- ment of better performance image-guided robots (Stoianovici et al. 2007a). .... The robot is cus- tomized for transperineal needle insertion and designed to be compatible with all known .... This includes uncompromised compatibility with mag- netic resonance imagers ( MRI ) of the highest field strength, size accessibility … system utilizes a new type of motor specifically designed for this application, the pneumatic stepper motor (PneuStep).