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Scientists Discover Way to Send Information into Black Holes Without Using Energy

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This Tiny Robot Can Perform Eye Surgery With Greater Precision Than Human Hands And It Could Help Save Vision

Modern medicine is entering an era where surgeries are becoming smaller, more delicate, and more precise than ever before. Procedures that once seemed impossible are now being explored with the help of advanced robotic technology. One of the most challenging examples is microsurgery inside the eye, where doctors must perform extremely careful movements on tiny structures that are far beyond the limits of the human hand.

A new development called Origanoid, an origami-inspired robotic manipulator, could change the future of microsurgical procedures by combining tiny size, high precision, and powerful movement. Designed by Suzuki and a research team, this miniature robot aims to solve major problems faced by traditional surgical manipulators and could become an important tool for future treatments such as retinal cell and gene therapies.

The Challenge of Microscale Eye Surgery

The human hand is remarkably skilled, but even the most experienced surgeons have natural limitations. Small movements caused by hand tremors can become a major problem when working on extremely delicate tissues. In procedures such as subretinal injection, where medicine or therapeutic cells are delivered beneath the retina, even a tiny mistake can damage sensitive eye structures.

To overcome these limitations, researchers have developed robotic microsurgical manipulators that allow surgeons to control instruments with greater accuracy. These robotic systems can perform movements much smaller than the human hand can achieve.

However, current systems come with their own challenges. Many existing surgical manipulators are built using traditional metal-based structures. These devices are often large, complex, and difficult to place inside already crowded operating rooms.

Typical robotic manipulators used for microsurgery can be around 200–400 millimeters long and weigh between 300 grams and 3 kilograms. Their size and weight can make them difficult to integrate into surgical environments. Larger structures also increase the chance of accidental contact with nearby tissues or other surgical equipment.

Researchers needed a new approach — something smaller, lighter, and still powerful enough for medical use.

Inspired by the Art of Origami

The solution came from an unexpected source: origami, the traditional Japanese art of paper folding.

Origami structures can create complex three-dimensional shapes from simple flat materials. Scientists and engineers have increasingly studied origami principles because they allow the creation of lightweight, flexible, and compact machines.

Origami-inspired robots have several advantages. They can be manufactured using simple materials, require fewer parts, and can be folded into very small spaces while still producing useful movements.

However, these designs also have limitations. Their flexible structures often struggle to generate enough force. For medical applications, especially eye surgery, a robot must not only be precise but also strong and reliable.

A surgical device needs to meet strict requirements: it must move accurately, apply enough force, survive sterilization, and provide safety features during emergencies.

The Origanoid project aimed to overcome these challenges.

A Tiny Robot With Powerful Performance

The Origanoid is a compact robotic manipulator created using common plastic materials instead of heavy metal components. Despite its small size, the device delivers impressive performance.

The robot measures only 160 × 50 × 50 millimeters and weighs just 17.9 grams. This makes it dramatically smaller and lighter than many conventional surgical manipulators.

Despite its miniature design, the Origanoid can achieve motion precision of approximately 12 micrometers. To understand this scale, a human hair is typically around 70 micrometers thick. This means the robot can perform movements several times smaller than the width of a human hair.

The device can also produce forces up to 550 millinewtons (mN), which falls within the range needed for subretinal procedures. This is a significant achievement because creating high force output from such a small and flexible structure has been one of the biggest challenges in origami-inspired robotics.

Designed for Real Surgical Environments

A major advantage of the Origanoid is that it was not only designed as a laboratory prototype but also developed with real clinical needs in mind.

Medical equipment must be safe, practical, and easy to operate. The researchers focused on several important features required for surgical applications.

One key feature is sterilizability. Surgical tools must be cleaned and sterilized before use to prevent infections. The Origanoid’s material and design allow it to meet this requirement.

Another important safety feature is its ability to allow emergency tool release within 50 milliseconds. During surgery, unexpected situations can occur, and doctors need the ability to quickly remove or disconnect instruments to protect the patient.

By including these features, the Origanoid moves beyond being just an experimental robot and becomes closer to a practical medical device.

Successful Testing Inside Living Eyes

The most important step for any medical technology is testing whether it works in real biological environments.

The research team successfully demonstrated in vivo subretinal injections, meaning the robot was used in living subjects rather than only in laboratory models.

This achievement shows that origami-inspired robotic systems are moving from simple engineering demonstrations toward possible medical applications.

The ability to perform precise injections beneath the retina is especially important because many future treatments depend on delivering therapies directly to specific cells. For example, retinal diseases caused by genetic problems may eventually be treated using gene therapies that require extremely accurate delivery methods.

A tiny robotic system like Origanoid could help surgeons perform these procedures with greater control and safety.

A New Direction for Medical Robotics

The development of Origanoid represents an important step in the evolution of surgical robotics. Instead of relying on large, expensive, and complicated machines, future medical robots may become smaller, lighter, and more adaptable.

Origami-inspired designs could open new possibilities not only in eye surgery but also in other areas where precision and miniaturization are critical.

From repairing delicate tissues to delivering advanced therapies, tiny robotic tools may become essential parts of next-generation medicine.

Although more research and clinical testing are needed before such devices become widely available in hospitals, Origanoid demonstrates that simple materials and creative engineering can solve complex medical challenges.

The future of microsurgery may not depend on bigger machines — it may depend on smaller, smarter, and more precise robots inspired by the ancient art of folding paper.

Reference: Suzuki, H., Nakano, Y., Koyama, Y. et al. Origami-inspired manipulator enables in vivo subretinal injection. npj Robot (2026). https://doi.org/10.1038/s44182-026-00096-x

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