Miniature Components for End Effectors in Minimal Invasive Robotic Surgery (MIRC)

Instruments used in Minimal Invasive Robotic Surgery (MIRC) transfer robotically scaled motions into the surgical field within extremely confined spaces.
The end effectors designed for this purpose place the highest demands on the mechanical core components: zero backlash, reproducible motion guidance, and defined force transmission are essential for the precise execution of robotic commands.

One of these functionally integrated miniature assemblies from the myonic portfolio carries the internal nickname “Snappy”—derived from its characteristic jaw geometry. It serves as an example of the component based design of modern robotic end effectors.

Miniature ball bearings as a central functional element

Miniature ball bearings in end effectors fulfill multiple safety critical and function relevant tasks simultaneously. They define axes of motion, guide rotating or pivoting elements, and minimize friction and play.

Especially at very small diameters and under high mechanical demands, they decisively determine:
• running accuracy and repeatability of motion
• backlash free transmission of forces
• wear behavior over numerous cycles
• functional stability after repeated sterilization

The quality of the bearing system is therefore directly linked to the precision of the entire instrument.

Assembly architecture for robotic end effectors

Based on bearing technology, myonic designs complete miniature assemblies in‑house. Bearings, shafts, joints, and gripping mechanisms are functionally coordinated and engineered for use in extremely tight installation spaces.

Thanks to the integrated assembly approach, it is possible to:

• reduce space requirements and weight
• control tolerance chains
• minimize assembly effort
• increase motion accuracy and stiffness

This results in compact, robust functional units for gripping, cutting, clamping, or suturing applications.

Development and manufacturing in OEM partnership

“Snappy” represents the precision of modern miniature components used in the operating room. In this assembly, bearings, kinematics, and mechanics merge into a functional unit whose performance can be traced back to the component level—visible, measurable, and reproducible.

Making precision visible

“Snappy” represents the precision of modern miniature components used in the operating room. In this assembly, bearings, kinematics, and mechanics merge into a functional unit whose performance can be traced back to the component level—visible, measurable, and reproducible.