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View: 1870|Reply: 16
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[Dunia]
Kemajuan Sains: Ujian darah tanpa guna jarum
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A DEVICE the size of a ping-Pong ball that extracts blood when held against the skin might soon replace needles, according to representatives from Tasso Inc., a company that is working closely with the University of Wisconsin-Madison on the project.
Rather than pulling the blood from veins, which are closed channels, the device pulls it from the open channels in which blood flows through many microscopic vessels called capillaries.
During the two minutes it takes to collect the blood, a delicate vacuum creates capillary action, beckoning blood to flow into an attached container that's lab-ready.
The patient should feel no pain, according to reports.
Called microfluidics, the technology springboards on the forces that govern the flow of tiny fluid streams, according to Ben Casavant, vice president and co-founder of Tasso, Inc.
"At these scales, surface tension dominates over gravity, and that keeps the blood in the channel no matter how you hold the device," says Casavant.
At present, the device is able to pull 0.15 of a cubic centimeter, which makes it practical for testing cholesterol, infection, cancer cells and blood sugar, although diabetes is not an initial market due to the frequency of tests needed.
A technique for taking samples to diagnose HIV is in the works, according to the company.
The disposable device needs only six injection-molded plastic parts, says Casavant, noting this will simplify manufacturing and cut costs compared with conventional hypodermic needles.
Tasso Inc. recently received US$3 million in funding from the Defense Advanced Research Projects Agency (DARPA) for their project.
With the money they plan to embark on blood preservatives in the goal of stabilizing blood so it can survive one week at 60°C, thereby eliminating a costly step in the process.
Currently, blood is stored and handled by means of an unbroken cold-chain, meaning that every step of the process is carefully orchestrated to keep the blood at the same temperature.
Without the need for cold chain transportation, individuals could draw their own blood at home and mail the sample to the lab at their leisure, according to a company press release. – AFP Relaxnews |
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ini haram digunakan oleh orang isle kerana ianya ciptaan yahudi. baliklah pada isle sebenar. |
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Without the need for cold chain transportation, individuals could draw their own blood at home and mail the sample to the lab at their leisure, according to a company press release.
OK ke mcm ni  hygiene mcm mana |
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lu nak throll pun tahap loji....
modal 10tahun lepas...
tarak modal baru ka..bahlol??
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hygiene lu pasti banyak turuk...
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Alahai, aku Tak reply post kau Kat thread lain gigih quote aku Kat thread lain pulak..sedih sungguh kehidupan kau ye  |
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wa dulik apa...
lu tanya pasal hijin myjin....sudah gerenti hijin lu macam jin kafir...turuk.
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Konsep mcm mulut lintah ke sedut darah ni?
pacat , lintah sedut darah x sakit..
Tapi kalo lintah darat yg sedut..sakitnya tuh disini laa
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kesian lintah sedut darah orang ada hiv taw...kata si bahlol didefecated tu...
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yeah, sains dah menang  |
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Menarik bagi aku
Nak buat blood donation x la sakit2 lepas ni |
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rasenya blood donation still kena withdraw guna vein..huhu...yang ni utk blood test/sample je kan...
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ha elokla. aku masuk spital baru ni sebab denggi, sehari 4x amik darah. dapat nurse yang pandai sekali je dapat lah darah, kalau yang tak pandai tu jenuh gak la. lebam2 lengan jadinya.. |
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Post time 20-4-2015 12:00 AM
变色卡
