Medical Robotics

Medical robotics encompasses a diverse set of technologies in which robotic platforms assist in surgical intervention, diagnostic imaging, and patient care. Surgical robots extend the dexterity and precision of the surgeon’s hands, enabling minimally invasive procedures in anatomically complex sites. They range from teleoperated master–slave systems, in which a surgeon at a console controls instruments inside the patient, to active robots that execute predefined tasks such as bone milling or needle placement under imaging guidance. Beyond the operating theatre, telepresence robots and autonomous devices monitor vital signs, deliver medications and handle routine logistics in clinics and intensive-care units. In the field of rehabilitation, wearable exoskeletons and end-effector systems offer repetitive, programmable training for stroke survivors and persons with spinal cord injury, while assistive manipulators and prosthetic limbs restore basic activities of daily living. Across all areas, advances in sensing, imaging, artificial intelligence and human–robot interaction aim to improve safety, reproducibility and patient-specific customisation, ultimately broadening access to high-quality care and reducing the physical strain on medical staff.

Research from Nature Portfolio

Motor-free telerobotic endomicroscopy has emerged as a novel intraluminal imaging approach using a compact magnetic rotor driven entirely by an external field. The device achieves steerable optical coherence tomography scans of curved lumens without onboard motors, maintaining sub-millimetre thermal stability and sub-millivolt electrical safety. A learning-based correction algorithm compensates for uneven rotation, yielding distortion-free 3D visualisation of epithelial tissues in vivo and paving the way toward guidewire-independent endomicroscopy.

In remote surgery, redundant communication channels have been validated to prevent interruption of robotic procedures. Two commercial fibre-optic links, configured as main and backup lines, were alternately shut down and restored during artificial-organ and live-animal tasks. Surgeons reported no perceptible degradation in video or control, demonstrating that parallel commercial networks with redundant encoders can safeguard the continuity and safety of telesurgical operations.

Computed tomography-guided robotic assistance for percutaneous needle placement has been shown to combine high accuracy with operator independence. In a large-animal liver model, robotically guided insertions achieved a mean tip-to-target error of approximately 3.5 mm across a wide range of trajectory lengths and angles, without difference between novice and expert users. Respiratory gating and automated planning contributed to 100 % feasibility in single-attempt insertions, supporting translation to human trials.

Research from all publishers

A novel robotic bronchoscope integrates a nickel-titanium continuum end effector with path-planning software to navigate the pulmonary airway tree for lesion biopsy. The device combines high bending compliance with real-time sensor feedback and achieves three-degree-of-freedom control, enabling precise navigation through complex bronchial branches under natural-cavity conditions.

A long-distance telesurgical demonstration over a Fifth-Generation wireless network has shown that complex robotic training tasks can be performed on surgical phantoms separated by nearly 300 km. The study reported end-to-end command latency of under 20 ms and high-definition video delay of roughly 350 ms, allowing smooth instrument manipulation and neutral to positive usability ratings by the operating surgeon.

Teleoperated magnetic endoscopy has been advanced through a case study in which a soft magnetic gastroscope was guided alternately from distant continents. Using external rotating fields, the magnetic endoscope performed in vivo gastroscopy in a porcine model with two operators in Hong Kong and Zurich. This work highlights the feasibility and potential for truly global remote endoscopic procedures under magnetic navigation.

Medical Robotics publication trend

The graph below shows the total number of articles in medical robotics across all publications each year (not limited to Nature Index journals).

Technical terms

Master–slave system: A teleoperation architecture in which a ‘master’ device at the surgeon’s console controls a ‘slave’ robotic manipulator at the patient site.

Optical coherence tomography (OCT): A high-resolution imaging modality that uses low-coherence light to generate cross-sectional views of tissue microstructure in real time.

Stereotactic navigation: The use of image-based spatial coordinates to guide instruments along preplanned trajectories with sub-millimetre precision.

Continuum robot: A flexible, snake-like robotic manipulator composed of continuously bending segments capable of navigating tortuous pathways.

Redundant communication: The use of parallel data links or networks to ensure uninterrupted control and feedback in case of line failure.

References

1. Motor-free telerobotic endomicroscopy for steerable and programmable imaging in complex curved and localized areas. Nature Communications (2024).
2. Construction of redundant communications to enhance safety against communication interruptions during robotic remote surgery. Scientific Reports (2023).
3. Feasibility, safety and accuracy of a CT-guided robotic assistance for percutaneous needle placement in a swine liver model. Scientific Reports (2021).
4. A Novel Robotic Bronchoscope System for Navigation and Biopsy of Pulmonary Lesions. Cyborg and Bionic Systems (2023).
5. A long distance telesurgical demonstration on robotic surgery phantoms over 5G. International Journal of Computer Assisted Radiology and Surgery (2023).
6. Teleoperated Magnetic Endoscopy: A Case Study and Perspective. Advanced Intelligent Systems (2024).