Technique to treat the microphone robot injected into the eyes with magnetic force "OctoMag"



The size is less than 1 mmMicrophoneDue to its size, it must be moved with a very limited power supply, because it is difficult to move with a battery or a motor, it is not suitable for examining the inside of the human body or treating it It was done. However, in Zurich, SwitzerlandMultiscale Robotics Engineering LaboratoryIs a new technology for ophthalmic surgery that wirelessly manipulates a multi robot created with magnets from the outside with magnetic force "OctoMag"Was developed.

IRIS :: MRI-based Tracking in 3D Magnetic Steering Systems
http://www.iris.ethz.ch/msrl/research/current/mri%5Ftracking/

Minimally-invasive eye-surgery on the horizon as magnetically-guided microbots move toward clinical trials | Robohub
http://robohub.org/minimally-invasive-eye-surgery-on-the-horizon-as-magnetically-guided-microbots-move-toward-clinical-trials/

OctoMag, a magnetic operation system, is a revolutionary invention that can control a microphone injected into the eyeball from outside by any direction from a magnetic control device consisting of eight electromagnets. Experiments using the prototype OctoMag were advanced using pig eyes and it was confirmed whether the tasks necessary for retinal surgery can be performed. In an experiment using a rabbit eye smaller than the next pig eye, it is possible to use the OctoMag to control a micro robot with a diameter of 285 micrometers, which is approximately 4 times the size of the hair, at the surgical level It is said that it was proved.

The following movies explain the mechanism of OctoMag and actual equipment.

OctoMag: An Electromagnetic System for 5-DOF Wireless Micromanipulation - YouTube


Roughly explaining ophthalmic surgery using OctoMag, it looks like this, first the eyeball is injected with a needle containing a mic robot made of magnet.


The micro robot pops out from the tip of the injection needle stuck in the eyeball.


OctoMag goes straight to the affected part requiring treatment by remotely controlling the protruding micro robot with magnetic force.


The needle comes out from the tip of the micro robot and injects it to the affected part to administer the medicine.


This is actually used equipment, eight coils are radially aligned toward the center. The magnetic force produced by these coils is used to control the microphone.


The object at the tip of the radially arranged coil is a micro robot made of magnet.


OctoMag allows you to move microphone robot in multiple directions, and can also rotate it with kurukuru.




The image below is where you inject the injection into the blood vessel by operating the mic robot with OctoMag.


Injection into the blood vessel with quick movement without taking time.


The left side of the image is the needle that was attached to the microphone, and the right side is the micro robot.


The state that OctoMag is controlling microphone robot injected into eyeball model toward retina can be confirmed from the following movie. .

Untethered magnetic end-effector steered in model eye in OctoMag magnetic steering system - YouTube


OctoMag, which manipulates microphones made of magnets, is currently in the stage of receiving clinical trials soon, it seems that it will take some time to put it into practical use, but there is a possibility that it can be applied to MRI technology It seems that further development is expected.

in Note,   Science, Posted by darkhorse_log