Medical Technology
Precision That Inspires Confidence
Precision, Safety and Reliability – Drive Solutions for Medical Technology
Maximum Precision and Reliability in Sensitive Applications
Medical technology systems operate in highly sensitive environments. Whether in surgical assistance systems, imaging equipment or laboratory technology, movements must be precise, smooth and reliable. There is little room for backlash, unnecessary vibration or uncontrolled motion.
At the same time, components must be compact and durable. They need to integrate seamlessly into hygienic and functional device concepts, operate with minimal noise and continue to perform reliably even after many operating cycles.
Mönninghoff develops clutch and brake systems for medical technology applications where mechanical precision, secure holding functions and sensitive force transmission go hand in hand. Each solution is tailored to the specific device architecture, motion sequence and hygiene requirements.
When Motion Must Be Exceptionally Controlled
Mönninghoff components can be used in a wide range of medical technology applications, including:
- Surgical assistance and robotic systems
- Positioning and adjustment units
- Imaging systems
- Laboratory and analytical instruments
- Dosing and pipetting systems
- Medical lifting and pivoting axes
- Therapy and diagnostic equipment
- Testing and calibration systems for medical technology components
- Compact drives with demanding requirements for low noise and vibration
The movements involved may be small, yet technically demanding. A positioning table must move with absolute accuracy. A vertical axis must safely hold an assembly in position. A dosing unit must operate consistently. A surgical system must respond with great sensitivity while introducing no unnecessary vibration into the application.
Drive technology must therefore do more than simply function. It must fit into an environment where precision, hygiene and confidence are inseparable.
Requirements for Clutches and Brakes
Medical technology systems place unique demands on their drive components.
- High precision Movements must be accurate, controlled and repeatable.
- Minimal backlash Near-zero backlash is essential for positioning, dosing and robotic applications.
- Low-noise operation Drive noise should be kept to a minimum in medical and diagnostic environments.
- Low-vibration movement Vibrations can affect measurements, imaging quality, dosing accuracy and surgical procedures.
- Reliable holding function Vertical axes and moving assemblies must remain securely in position.
- Smooth engagement and disengagement Movements should start and stop without jerking or unnecessary load peaks.
- Compact design Medical devices often provide very limited space for additional drive elements.
- High power density Even small components must transmit the required force and torque.
- Long service life Performance must remain stable over many operating and cleaning cycles.
- Low-maintenance construction Device availability and predictable maintenance are important for both operators and manufacturers.
- Hygienic integration Materials, surfaces and installation concepts must align with the specific device and cleaning requirements.
- Reliable documentation Comprehensive technical documentation is essential for the development and qualification of medical devices.
The solution must therefore be sensitive yet robust, compact yet powerful, quiet yet secure. In medical technology, this is not a contradiction but the standard.
Sensitive Control, Secure Holding
Mönninghoff develops clutch and brake systems for medical devices that are tailored to motion profiles, torque, speed, noise, vibration, installation space and hygiene requirements.
Pole Friction Clutches
Pole friction clutches provide controlled-slip, smooth torque transmission. They may be suitable for applications where motion must be initiated gently, loads transmitted sensitively or torque precisely controlled.
Possible applications include
- Dosing and positioning units
- Laboratory and analytical equipment
- Drives with sensitive mechanical assemblies
- Smooth start and stop movements
- Applications with variable loads and demanding smooth-running characteristics
Controlled force transmission can help reduce jerking and load peaks, improving both user comfort and motion repeatability.
Electromagnetic Tooth Clutches
Electromagnetic tooth clutches provide positive engagement with high precision and minimal backlash. They are particularly suitable where defined torque transmission and repeatable positioning are required.
Typical applications include:
- Precise motion control in surgical or robotic systems
- Positioning axes in diagnostic equipment
- Defined mechanical connections in dosing and adjustment units
- Fast switching operations in compact device architectures
- Applications with high repeatability requirements
The positive locking connection provides a clearly defined mechanical state. This is especially important in positioning applications where even a small deviation can influence the next measurement or process step.
Electromagnetic Tooth Holding Brakes
Electromagnetic tooth holding brakes secure axes and assemblies through positive locking. They can be suitable for vertical axes or safety-critical applications where a position must be maintained reliably, even in the event of a power failure.
Potential applications include
- Vertical positioning and lifting axes
- Surgical assistance systems
- Adjustment units in imaging equipment
- Holding functions in laboratory and analytical devices
- Parking, maintenance and safety positions
The bistable operating principle can support energy-efficient holding functions. This is particularly valuable in compact devices with limited power consumption budgets.
Magnetorheological Fluid Brakes
Magnetorheological fluid brakes provide continuously adjustable braking torque and variable damping. They can be particularly attractive for applications requiring exceptionally smooth and controlled deceleration.
Potential applications include
- Controlled deceleration of positioning axes
- Soft-stop functions in medical devices
- Damping of sensitive movements
- Variable braking profiles for changing loads
- Precision motion control in assistance and robotic systems
This allows the brake to contribute not only to accurate positioning but also to smooth and controlled arrival at the target position.
Voice Coil Actuators
Voice coil actuators are ideally suited for fast and precise linear movements. They can provide short strokes and rapid actuation where high dynamics, low moving mass and compact integration are essential.
Potential applications include
- Fast actuation in laboratory and analytical equipment
- Short-stroke movements in dosing and pipetting systems
- Linear movement in assistance and positioning modules
- Precise positioning functions in testing and measurement systems
- Compact switching tasks with short response times
The direct linear motion can simplify mechanical design while delivering the required precision within a compact installation space.
Precision That Inspires Confidence
Whether for surgical assistance, imaging systems, laboratory and analytical equipment or medical positioning units, Mönninghoff develops clutches, brakes and actuators for applications where precision, safety, smooth operation and long-term durability are essential.
Are you developing a medical device and looking for a compact, quiet and precise drive solution? Discuss your requirements with our experts, including torque, positioning accuracy, noise, vibration, hygiene, holding force and installation space. Together, we develop technology that operates reliably and inspires confidence in every movement.
Precision Without Unnecessary Noise and Vibration
In medical technology, the mechanical behaviour of drive components can directly affect application performance. Vibrations can influence measurement results, image quality and motion accuracy. Noise can impact the comfort of patients, users and medical staff.
When designing a solution, factors such as the following may be considered
- Torque and speed
- Acceleration and deceleration profiles
- Moving mass and moment of inertia
- Backlash and torsional stiffness
- Vibrations and natural frequencies
- Noise generation during engagement and braking
- Required holding force and positioning accuracy
- Heat generation during continuous or intermittent operation
- Available installation size and mounting position
- Cleaning requirements, hygiene and material compatibility
- Interfaces to control systems, sensors and diagnostics
Mönninghoff considers not only peak performance values but the complete motion behaviour of the device. In medical technology, quality often lies in controlled, unobtrusive movement.
Hygienically and Functionally Integrated
Medical devices can have very different hygiene requirements. A laboratory instrument, a surgical assistance system and an imaging device are not necessarily cleaned or operated in the same way. Therefore, the integration of the clutch or brake must match the specific device and its intended application.
Depending on the application, relevant considerations may include
- Suitable materials and surface finishes
- Protected installation arrangements
- Prevention of dirt and fluid accumulation
- Accessibility for maintenance and cleaning
- Resistance to intended cleaning agents
- Low particle generation and wear characteristics
- Compact integration into housings and protective concepts
- Consistent performance after repeated cleaning cycles
- Appropriate technical documentation for device development
Suitability must always be assessed based on the application, device concept and applicable requirements. Hygienic design starts during the earliest stages of development.
Tailor-Made Solutions for Sensitive Device Architectures
Whether for a surgical system, imaging technology or laboratory equipment, every medical technology application has its own requirements regarding motion, installation space, noise, hygiene and safety.
The following factors, among others, may be taken into account
- Torque, speed and direction of movement
- Linear force and stroke
- Positioning accuracy and repeatability
- Load profile and operating duration
- Desired engagement and braking characteristics
- Holding function during standstill and power loss
- Noise and vibration behaviour
- Available installation size and connection geometry
- Material, surface finish and cleaning concepts
- Requirements for controls, sensors and diagnostics
- Service life and maintenance intervals
- Integration into existing device and safety concepts
Mönninghoff develops customised solutions that integrate seamlessly into both the mechanical and functional architecture of the device.
From Initial Concept to Reliable Series Production
Prototypes and functional test samples enable early evaluation of components in combination with the device. This allows motion quality, noise, vibration, holding performance and integration to be assessed in a targeted manner.
Potential test criteria include
- Positioning accuracy and repeatability
- Switching time and operating smoothness
- Holding force under static and dynamic loads
- Braking and damping behaviour
- Noise and vibration characteristics
- Thermal loading and continuous-operation performance
- Functionality after repeated cleaning cycles
- Integration with mechanics, control systems and sensors
- Behaviour during power failures and emergency stops
- Wear and service life under the intended operating profile
The earlier drive technology is incorporated into the development process, the better interfaces, installation space and functional requirements can be coordinated. This creates a strong foundation for safe and efficient series production development.