Robot Swarm Performs Colonoscopy And Biopsy

I have to say I have my doubts about this procedure as an alternative to colonoscopy.


(Robot swarm microgrippers perform colonoscopy)

At Johns Hopkins University, in Baltimore, David Gracias and his colleagues have developed microgrippers—star-shaped devices that can measure less than 500 micrometers from tip to tip. The grippers can be made of materials that respond to environmental factors such as temperature, pH, and even enzymes. A temperature-sensitive gripper’s arms will close when exposed to the body’s heat. If placed well, the arms will close around tissue, performing a miniature biopsy.

Such grippers might provide a less invasive way to screen for colon cancer in patients who suffer from chronic inflammatory bowel diseases. Today, Gracias says, such screening can involve taking dozens of samples with forceps, in an effort to get good statistical coverage of the interior surface of the colon. Instead, a doctor could insert hundreds or thousands of microgrippers into the colon through a tube and then retrieve them using a magnet or, later, by sifting through the patient’s stool.

Based on tests in live pigs, Gracias’s team estimates that about one-third of the grippers capture tissue. Others may come up empty-handed because they have the wrong orientation or close before reaching anything. But he says this approach, which minimizes the cost and maximizes the ease of manufacturing, could be powerful.

“The typical idea has been that you have one device that you guide precisely [to perform a] surgical procedure,” Gracias says. His strategy borrows a page from the imperfect world of biology: “If you have a large number of not-perfect devices, you may be able to achieve the same functionality as one perfect one.”

These microgrippers bear an uncomfortable resemblance to the cookie-cutters from Neal Stephenson's 1995 novel The Diamond Age.

Microscopic invaders were more of the threat nowadays. Just to name one example, there was ... the Seven Minute Special, a tiny aerodynamic capsule that burst open on impact and released a thousand or so corpuscle-sized bodies, known colloquially as cookie-cutters, into the victim's bloodstream. It took about seven minutes ... for the cookie cutters to be randomly distributed throughout the victim's organs and limbs.

A cookie-cutter was shaped like an aspirin tablet ... two tiny centrifuges. Detonation dissolved the bonds holding the centrifuges together so that each of a thousand or so ballisticules suddenly flew outward...
(Read more about cookie-cutters)

If long-time Technovelgy readers think that this story seems familiar, you're right; I wrote about Microgrippers Grab, Cut Tissue Internally in 2008. Technovelgy readers always have one foot in the future!

Via IEEE Spectrum.

Scroll down for more stories in the same category. (Story submitted 5/29/2015)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Medical ")

Wound Healing With Wearable Nanogenerators
'... forcing the energy transfer which allowed him to ... erase the other internal-external damage.' - Frank Herbert, 1972.

EXPLORER, The First Total-Body Scanner
'The object is built up of an infinite series of plane layers, at the focus of the ray...' - Jack Williamson, 1930.

Bioreactor Helps Legless Frogs Get Their Jump Back
'An alien drug... Used by an insect race... It can repair bones and organs. It can grow new tissue." - Clifford Simak, 1961

Sleeep PRO Earplug For Maximum Rest
'Merton... placed the electrodes of the sleep-inducer on his forehead.' - Arthur C. Clarke, 1963.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Wound Healing With Wearable Nanogenerators
'... forcing the energy transfer which allowed him to ... erase the other internal-external damage.'

Flying Dragon Robot Transforms In Mid-Air
Terrific prototype video.

Negative Matter Fluid Theorized In New Paper
'Of course, being negative matter, when you push it, it comes toward you..'

Grow Structures Upon Planetfall - Myco-Architecture
'They'll also start pulling in gases and liquids from the local atmosphere...'

MXene Hydrogel Skin For Robots Flexes And Senses
'The plastex swam and whirled like boiling toothpaste...'

EXPLORER, The First Total-Body Scanner
'The object is built up of an infinite series of plane layers, at the focus of the ray...'

UK Police AI To Stop Criminals Before They Strike
'... the computing mechanisms that studied and restructured the incoming material.'

Sonitus Audio Interface Positioned Beyond The Noise
'... an instrument having relatively small bit pieces adapted to be gripped between the teeth.'

Volvo's Self-Driving Mining Trucks
'A procession of automatic ore carts was racing over the bleak slag'

Audi Pop.Up Autonomous Electric Flying Car
'The cab was an egg-shaped bubble of light metals and plastics...'

Music Not Impossible (MNI) Vibrotactile Wearable Experience
Don't you want to experience the 'feely' effects?

Chinese Face Recognition Mistakes Bus Ad For Jaywalker
'... the imprint of her image on the telephoto cell.'

A Look Back At Apollo's Emergency Escape Vehicle
'A simple mechanism... it drove the iron ball through space like a ship.'

InMotion Glide 3 Electric Unicycle For The Last Mile
'...gyro-stabilized on a single wheel.'

China's Social Credit System - A Facebook-1984 Mashup
'Prestige, face, mana, repute, glory: the Sirenese word is strakh.'

Musk Declares Tesla Supercharger Capacity Will Double By Next Year
'Recharge the batteries... in almost every town and village...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.