Medical Robotics is the application of robotic systems to clinical and surgical settings, encompassing robot-assisted surgery, rehabilitation robotics, diagnostic automation, and hospital logistics. These systems extend clinician precision, reduce invasiveness, and enable procedures at scales or locations beyond unaided human capability. Medical robots must meet rigorous safety, sterilisation, and regulatory standards before clinical deployment. The field intersects robotics engineering, clinical medicine, and regulatory science.
Overview
- Medical robotics emerged in the 1980s with early orthopaedic and neurosurgical systems and accelerated with the introduction of the da Vinci surgical system in the late 1990s.
- Modern systems range from laparoscopic robot arms controlled by surgeons to autonomous biopsy and drug-dispensing robots.
- Collaborative robots (cobots) assist in rehabilitation by providing graded resistance and tracking patient recovery.
- Hospital logistics robots manage specimen transport and pharmacy dispensing, reducing staff burden.
Key Aspects
- Precision: sub-millimetre positioning accuracy enables procedures impossible with unaided hands.
- Minimally invasive: smaller incisions reduce recovery time and infection risk.
- Teleoperation: surgeons may operate from a remote console, enabling expertise delivery over distance.
- Safety certification: IEC 60601 and ISO 13485 govern electrical safety and quality management.
- Human oversight: current clinical robots require continuous surgeon supervision; autonomy is strictly bounded.
Mechanisms
- Robotic arms receive real-time commands from a surgeon console, translating coarse hand movements into scaled, tremor-filtered micro-motions.
- Sensor Fusion combines endoscopic video, force sensing, and intraoperative imaging to maintain situational awareness.
- Machine Learning models assist with tissue classification, anatomy segmentation, and instrument tracking.
- Control Loop systems enforce position and force limits to prevent tissue damage.
Applications
- Laparoscopic and cardiac surgery (e.g., robotic prostatectomy, mitral valve repair).
- Orthopaedic procedures including knee and hip arthroplasty.
- Stroke and spinal injury rehabilitation via exoskeleton-based therapy.
- Radiotherapy positioning and stereotactic radiosurgery.