Painless needle mimics a mosquito's bite


	Painless needle mimics a mosquito's bite

A53GG4

7-22-2008 3:15 AM

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/ef2e1a82-f317-4911-bcef-5b3682041114/41AD2794-5851-400C-81DB-96E30008D16A/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20" href="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20" style="font-size: 11px;">technology.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><DIV id="artHeadline"><H4 class="inline">Painless needle mimics a mosquito's bite</H4>
</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><li style="margin-left:16px;padding-left: 0px;">
16:01 17 July 2008
</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><li style="margin-left:16px;padding-left: 0px;">
NewScientist.com news service
</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><li style="margin-left:16px;padding-left: 0px;">Belle Dumé</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><P>A painless "microneedle" that mimics the way a female mosquito sucks blood has been built by engineers in India and Japan. The needle could be used to draw blood, inject drugs, and as a glucose-level monitor for diabetics.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><P>A female mosquito sucks blood by flexing and relaxing certain muscles in its proboscis. This creates suction (or negative pressure) that draws blood into its mouthparts.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><P>The new biocompatible microneedle, designed by <A target="NS" href="http://www.iitkgp.ac.in/fac-profiles/showprofile.php?empcode=bTmVW" linkindex="22" set="yes">Suman Chakraborty</A> of the Indian Institute of Technology in Kharagpur and Kazuyoshi Tsuchiya of <A target="NS" href="http://www.pr.tokai.ac.jp/english/tdmenu/index.html" linkindex="23">Tokai University</A> in Kanagawa is based on the same principle.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20"><P>In this case, the sucking action is provided by a microelectromechanical pump, which works using a piezoelectric actuator attached to the needle.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20">Contrary to popular belief, a mosquito bite does not hurt.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://technology.newscientist.com/channel/tech/dn14348-painless-needle-mimics-a-mosquitos-bite.html?feedId=online-news_rss20">The researchers have calculated that their needle can extract 5 microlitres of blood per second. </blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/41AD2794-5851-400C-81DB-96E30008D16A/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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