12px13px15px17px
Date:02/02/19

Expanding pill could be used to monitor stomach conditions for up to one month

The soft, squishy device, which is made from hydrogel materials, is softer, longer lasting and more biocompatible than some of the current ingestible stomach sensors that can only stay in the stomach for a few days.
 
Lin and colleagues wanted to design a hydrogel-based pill that could be used to carry sensors into the stomach to monitor vital signs or disease states over an extended period.
 
However, they knew that a pill tiny enough to pass down the esophagus and into the stomach would also be small enough to pass through a structure called the pylorus and out of the stomach.
 
They therefore looked at ways of designing a pill that would quickly expand to the size of a ping-pong ball to prevent it from leaving the stomach.
 
The inflatable device is made up of one inner hydrogel layer containing superabsorbent particles that quickly soak up liquid and expand and a second outer layer that forms a protective layer that is impervious to churning stomach acids.
 
As reported in the journal Nature Communications, on immersing the pill in solutions that mimicked gastric juices, the pill expanded to 100 times its original size within about one-quarter of an hour, which is much faster than the rate seen with existing hydrogel-based devices. Senior author Xuanhe Zhao says that once inflated, the pill resembles the softness of Jell-O, but is surprisingly strong.
 
To test the strength of the pill, the team squeezed it thousands of times, applying forces even greater than those it would be subjected to as the stomach contracts.
 
“We found that even when we make a small cut in the membrane, and then stretch and squeeze it thousands of times, the cut does not grow larger. Our design is very robust,” says Lin.
 
Finally, small temperature sensors were embedded in the pill which was then fed to pigs. The sensors were later retrieved from the pigs’ stool and used to plot temperature measurements over time.
 
The team reports that the sensors were accurate at tracking the pigs’ daily activity over a period of 30 days.
 
Liu and colleagues hope the pill could one day be used to deliver sensors to the stomach that could measure pH levels and signs of bacterial or viral infection, for example, or cameras that could capture images of ulcers or tumors.



Views: 88

©ictnews.az. All rights reserved.

Facebook Google Favorites.Live BobrDobr Delicious Twitter Propeller Diigo Yahoo Memori MoeMesto






04 June 2020

04/06/20
Nokia 43-inch 4K LED Smart Android TV with Dolby Vision, JBL audio launched in India for Rs. 31999

Flipkart and Nokia have launched the second Nokia branded Smart TV in India, as they had promised. The 43-inch

04/06/20
Lenovo launches Chromebook Flex 3i – an 11.6-inch convertible notebook

Lenovo has quietly added a new 11.6-inch convertible Chromebook to its budget laptop lineup. The new Lenovo 

04/06/20
Samsung Display unveils optimized OLED display for 5G smartphones

Samsung Display, the display-making affiliate of the conglomerate, unveiled an optimized OLED display for 5G

04/06/20
Microsoft’s Chromium-based Edge browser rolls out through Windows Update

Edge, Microsoft’s replacement for its often-criticized Internet Explorer was first released in 2015. But last year,

04/06/20
Samsung Galaxy Note 20 Ultra first appeared on the web

A Samsung smartphone with the model number SM-N986U has recently passed Bluetooth SIG certification

03 06 2020

03/06/20
Honor Play 4, Honor Play 4 Pro with hole-punch display, 5G support launched: Price, specifications

Honor Play 4 and Honor Play 4 Pro have been launched as the latest smartphones by the Huawei sub-brand Honor. 

03/06/20
iPad shipments predicted to fall this year amid 7% decline in wider PC and tablet market

Market research firm Canalys has forecast a sharp drop in PC and tablet sales in 2020 due to the economic

03/06/20
Facebook is making it easier to bulk-delete your embarrassing old posts

Facebook is launching a new feature called Manage Activity that lets users delete their old posts. It can be used

03/06/20
OPPO RENO 3 with dimensity 1000L SoC tops Antutu mid-range ranking

AnTuTu benchmark team has published the traditional ranking of the most powerful mid-range smartphones

03/06/20
Scottish island pilots drone deliveries of medical supplies

In a field overlooking the Lorn and Islands Hospital in the town of Oban on Scotland's remote west coast, an

03/06/20
Latest iPhone and iPad update is a toxic hellstew of bugs

Have you updated to iOS 13.5 or iPadOS 13.5? If not, you might want to hold off, because Apple's back to releasing buggy updates.