Researchers have developed a method to activate electronic implants in the body and eliminate bacterial infections using a wireless signal。
When triggered by remote technology, the gadget delivers heat to infected tissue。
And it could lead to technologies that enable drugs and treatment to be delivered to patients at the press of a button。
The technology was developed by researchers at Tufts University in Massachusetts and the University of Illinois。
Mice were given electronic implants that, when a signal was sent, heated up to treat tissue that was infected with staphylococcus, or staph, which can cause minor skin abscesses or life-threatening infections of the blood。
Tissues collected from the mice 24 hours after treatment showed no sign of the infection, while the device dissolved in 15 days, proving it can not only treat infections but also be disposed of easily。
The research, which also eliminated E. coli bacteria, was published in the Proceedings of the National Academy of Sciences。
Each device, made of silk and magnesium, harmlessly dissolved in the animals after the tests。
The heating device in the implants has a resistor and power-receiving coil made of magnesium, and the magnesium is wrapped in 'packet' of silk, keeping it safe and controlling its dissolution time。
The ability of the device to dissolve is important, as it means such implants would not need to be removed。
Implantable medical devices normally use non-degradable materials that have limited operational lifetimes and must eventually be removed or replaced。
But these new wireless therapy devices can handle the surgical process, and can then dissolve in minutes or weeks, depending on the time needed。
"This is an important demonstration step forward for the development of on-demand medical devices that can be turned on remotely to perform a therapeutic function in a patient and then safely disappear after their use, requiring no retrieval," said senior author Fiorenzo Omenetto, professor of biomedical engineering at Tufts School of Engineering。
"These wireless strategies could help manage post-surgical infection, for example, or pave the way for eventual Wi-Fi drug delivery."
研討者已開辟了一種應用無線旌旗燈號激活人體中電子植入物來清除細菌沾染的辦法。
當經由過程長途技巧觸發時，誰人小裝配就向被沾染的構造通報熱量。
一旦按下按鈕，它就可以通向包管藥物和醫治通報給病人的技巧。
這類技巧是由美國馬薩諸塞州的塔夫茨大學和伊利諾斯大學的研討者開辟的。
當旌旗燈號發出，小白鼠體內的電子植入物就經由過程加熱來醫治被葡萄球菌沾染的構造，這類被沾染的構造大概會激發稍微的皮膚膿腫大概威逼性命的血液沾染。
在醫治以後24小時內從小白鼠身上網絡到的構造已沒有沾染的跡象了。這個裝配在15天內主動降解，這也證實它不但可以或許醫治沾染，同時也是很輕易處置的。
這個同時也清除了大腸桿菌的研討被揭櫫在美國國度科學院的會刊上。
每一個裝備都是由絲和鎂制成，在試驗停止後會主動降解，對動物的身材沒有損害。
植入物中的加熱裝備有一個電阻器和一個電力吸收線圈，線圈是由鎂制成的，而鎂的外表又包裹了一層絲，如許既包管了平安又掌握了其降解的時光。
這個裝配的主動降解才能是非常主要的，由於這象征著這栽種入物不會再須要別的移除。
植入式醫療裝備平日應用的都是弗成降解的資料，它們的的應用壽命有限，並且終極必需移除大概重置。
然則這些新式的無線醫治裝備可以處置手術進程，並且可以或許依據需求時光在幾分鐘大概幾周內主動降解。
資深作家菲奧倫佐-澳門托——塔夫茨大學工程學院生物醫學工程的傳授說道：“對付需求式醫療裝備的成長，這是主要的一步希望。需求式醫療裝備可以或許在病人身上長途操縱醫治功效，並且醫治完成後可以或許平安降解，不須要再掏出來。”
“好比，這些無線計謀可有助於處置術後沾染大概為終極的無線藥物傳輸攤平途徑”。
市場價：HK$ 92
