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Robotics solutions and case studies

Improving the ergonomics of hand-held tools

Case study: Medical knee surgery robot

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Improve precision and reduce risk

Improve precision and reduce risk

Reducing the scale of any intervention is a common aim in surgery, enabling the patient to recover more quickly. Miniature robotic tools can facilitate a reduction in the scope of the surgery. In addition, linking the position of the tool to a patient’s CT scans improves precision and reduces risk. Reducing the surgeon’s fatigue requires the minimization of the size of hand-held operat-ing tools. This manufacturer had the twin goals of reducing the weight of their hand-held robotic tool and improving its reliability. The key goals were:

  • Reduce size and weight of hand-held tool
  • Minimize interference with other equipment by reducing noise generated
  • Reliable solution required

Lightweight 24V conversion to drive motors and controls

Lightweight 24V conversion to drive motors and controls

Power for the tool came from a 55V medically isolated bus and required conversion to 24V within the tool to drive the motors and control circuitry. To save space and weight a DCM DC-DC converter was selected that provided the 300W required in a footprint of just 8.8 cm2 and a weight of only 24g. The converter featured a low noise switching topology and also provided isolation, helping to reduce EMI from the device. Key benefits were:

  • DCM offered high power density (1kW/in3) and low weight (24g)
  • Low noise topology provided isolation and reduced filtering required
  • DCM’s high level of integration significantly increased reliability

Vicor DCM DC-DC Converter reduces size of solution

A DCM DC-DC converter converted the 55V input to 24V 300W to drive the motor and control electronics. The high efficiency (91.3%) of the converter reduced waste heat in the tool, improving system reliability. To analyze this power chain go to the Vicor Whiteboard online tool.

電力供給ネットワーク(PDN)

Security robot solution
DCM DC-DC converter

DCM DC-DCコンバータ

入力電圧: 9 – 420V

出力電圧: 3.3, 5, 12, 13.8, 15, 24, 28, 36, 48V

出力電力: 最大1300W

効率: 最大96%

24.8 x 22.8 x 7.2mm など

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