Medical micromotor

surgicalindustrialbrushless electric

Overview
Mirmex develops radial-flux, brushless slotless BLDC micromotors using printed winding topologies that remove constraints of conventional wire winding. The approach enables near-zero cogging, higher copper fill-factor and compact, high-performance motors for demanding industrial and medical applications.

Key Product Statement
These slotless BLDC micromotors by Mirmex deliver configurable geometries and electrical parameters (diameter, length, speed, voltage) while offering reproducible performance thanks to printed copper fibers and advanced thermal balance.

Performance Ranges
Diameter: 1.5 - 85 mm
Length: 2 - 120 mm
Power (up to): 1000 W
Torque (up to): 500 mNm
Speed (up to): 120,000 rpm

Benefits & Features

• Compact footprint — up to 50% smaller at equivalent performance due to higher packing factor.
• High performance density — improved copper fill-factor for greater output per unit volume.
• Customizable — full design freedom on diameter, length, speed, voltage and winding topology.
• Fast prototyping — significantly reduced lead time and cost for custom motor iterations.
• Consistent performance — repeatable manufacturing down to individual copper fibers.
• Improved thermal behaviour — balanced losses and higher fill-factor reduce thermal hotspots.
• Material efficiency — lower raw material consumption (up to 45% less) and reduced energy use.
• Unique coil topologies — printed windings enable geometries not achievable with traditional wire winding.
• Autoclavable capability — designed to withstand hundreds of autoclave cycles for sterile or harsh environments.

Application Examples
Medical power tools motorization
Diameter: 18.5 mm
Length: 37 mm
Speed: 80,000 rpm
Power: 75 W
Torque: 10 mNm
Efficiency: 93%
Key Features

• Thermally optimized for extended operation before overheating.
• Compact and lightweight — eases integration into handpieces.
• Higher torque density for demanding surgical tasks.

Space equipment actuators
Diameter: 20 mm
Length: 32 mm
Speed: 10,000 rpm
Power: 100 W
Torque: 100 mNm
Key Features

• High torque enabling simplified gearbox design and reliable operation.
• Low mass for reduced system weight.
• Precision and robustness for long-term space applications.

Cobot actuator
Diameter: 43 mm
Length: 30 mm
Speed: 1,500 rpm
Power: 30 W
Torque: 190 mNm
Key Features

• Dynamic response for improved cycle times and responsiveness.
• Smaller motor envelope for compact integration.
• Zero cogging and linear driveability for precise motion control.

Motor Development Flow

• Scope & modeling
• Prototyping
• Testing & fine tuning
• Mass production

Technical specifications

• Technology: Brushless slotless radial-flux BLDC micromotors with printed winding topologies.
• Zero cogging (very low or no cogging torque).
• Diameter range: 1.5 mm to 85 mm.
• Length range: 2 mm to 120 mm.
• Power: up to 1000 W.
• Torque: up to 500 mNm.
• Speed: up to 120,000 rpm.
• High copper fill-factor for improved performance density.
• Designed for improved thermal management and reduced thermal losses.
• Autoclavable operation capability (hundreds of cycles) for sterile/harsh environments.
• Customizable parameters: diameter, length, speed, voltage and topology.