作者: David E. Spielvogel , Richard W. Beck , Steven H. Mersch
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摘要: A device is provided for indicating when an intravenous needle has entered the vein through use of a solid fiber optic mounted in showing visual instantaneous entry. The distal end polished to be flush with point needle. sized have outer diameter which will extend cannula This reflects color, such as red blood, immediately upon entry and exposure blood magnifying system forming part invention at rear or proximal optic. user observes immediate without any flow blood. Other embodiments utilize needle, thus eliminating itself.