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United States Patent: 6557427 - Capillaries for fluid movement within microfluidic channels

Publication Type:

Patent

Authors:

Weigl, Bernhard H.; Klein, Gerald L.; Bardell, Ronald L.; Battrell, C. Frederick

Source:

Number 6557427 (2003)

URL:

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=22&f=G&l=50&co1=AND&d=PTXT&s1=%22Weigl%3B+Bernhard%22.INNM.&OS=IN/%22Weigl;+Bernhard%22&RS=IN/%22Weigl;+Bernhard%22

Abstract:

A capillary for introduction of whole blood into an analysis device. The capillary has a variable volume along its length, which allows the liquid sample to be drawn into the interior of the cartridge, away from the inlet, reducing the risk of contamination of the sample from the outside.