Spray-On Polymer Mats Heal Wounds Fast
Researchers have discovered that they can spray polymer nanofibers directly onto living tissues using an airbrush purchasable at any hardware store. These biodegradable mats of sticky fibers can seal surgical incisions and help them to heal.
(From PLGA nanofibers sprayed onto gloved hand)
Current methods for making the mats—such as electrospinning, which involves electric current—would damage living cells if the mats were made in situ. To devise a way to create the mats directly on the tissue, Kofinas and colleagues adapted a commercial airbrush, a tool more commonly used to apply paint.
They tinkered with different formulations of a biodegradable polymer, poly(lactic-co-glycolic acid), or PLGA, to find one that would work in the airbrush. By choosing a particular molecular weight of PLGA and concentration of acetone as the solvent, they could control the diameter of the resulting fibers. They ended up producing mats with fiber diameters of about 370 nm.
The researchers showed that the mats could seal diaphragm hernias and cuts to the lung, intestine, and liver in a pig. The acetone appears to evaporate before the nanofibers get deposited, suggesting that the solvent won’t pose toxicity problems, according to the paper. Cells sprayed with the PLGA nanofibers show no change in health after 24 hours. In lab tests, the nanofiber mats degraded completely over a 42-day period.
The polymer nanofiber mats are currently being improved and studied for upcoming surgical trials in laboratory animals.
Science fiction fans have been nursing their cuts and scrapes ever since the 1960 novel Dr. Futurity, in which Philip K. Dick wrote about art-derm - spray-on skin that could be directly applied to wounds.
Over her lacerated right shoulder he sprayed art-derm; it sealed off the open wound, halted bleeding, and prohibited infection.
(Read more about art-derm)
From In Situ Deposition of PLGA Nanofibers via Solution Blow Spinning via Chemical & Engineering News.
Scroll down for more stories in the same category. (Story submitted 3/27/2014)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
L'Oreal To 3D Print Human Skin
'...She helped the doctor spray on surrogate skin.'- Robert Heinlein, 1951.
NASA FINDER To The Rescue In Nepal
'The antennae of the Life Detector atop the OP swept back and forth...'- Frank Herbert, 1958.
Moran Cerf, When Will We Get Neuro Tech For Ourselves?
If brainwave-sensing consumer products tickle your fancy, try real science!
Performance Enhancing Drugs - In Gaming?
'A faint smell of rachag stimulant wafted down the table.'- Frank Herbert, 1965.
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.
Self-Driving Truck Corridor From Manitoba To Mexico?
Maybe this would be safer...
Electronic Tongue Knows Beer Better Than You
'Install taste buds in the end of one tentacle.'
NASA's Robotic Mining Competition
''Dave,'[Powell] said. 'You're a stable, rock-bottom mining robot...'
Should Humanity Switch To Robotic Pets?
'What about an exact electric duplicate of your cat?'
L'Oreal To 3D Print Human Skin
'...She helped the doctor spray on surrogate skin.'
LG Display Creates OLED Wallpaper
'A television that unrolled like a poster...'
Cool Foldable Mini-Quadcopter
'Eddie pocketed the bee cam...'
NASA's Subvocal Speech System
'She took a subvocal input device from its rack...'
Cicada UAV Dropped In Swarms
'We... dropped roughly a thousand eyes on Beta Hydri IV.'
AI's Now Being Taught Anger
Actually the Prime Radiant was just a display device.
Cicret Interactive Skin Display Prototype
'A strip of readout skin on my wrist...'
Lily Camera Video Sport Selfie Drone
'He set his camera to follow him, and it hovered behind him like a large tame bee.'
Metal Composite Floats Your Boat
'A metal that was apparently as light as cork and stronger than steel...'
Six Terabyte Solid State Drive Just 2.5 Inches
'A man or woman could carry AIs or complete planetary dataspheres...'
Israeli 'Food Replicator' Inspired By Star Trek
What flavor would you like?
Robotic Trash Can Wants Your Garbage
'The can pivoted on broad rubber treads and rolled toward her...'
More SF in the News Stories
More Beyond Technovelgy science news stories