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Flashback chamber visual enhancement

  • US 7,833,201 B2
  • Filed: 09/27/2007
  • Issued: 11/16/2010
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A medical infusion device for vascular access with enhanced flashback visualization, comprising:

  • a hub assembly having a proximal portion, a distal portion, a substantially transparent window section, the window section being disposed between the proximal portion and the distal portion;

    a needle hub mounted on the hub assembly, the needle hub defining a flashback chamber therein, wherein the flashback chamber is received within the hub assembly;

    a needle having a proximal end, a distal end and a lumen therethrough, the lumen being fluidly coupled to the flashback chamber to allow fluid to flow through the lumen into the flashback chamber; and

    a contrasting member disposed on at least a portion of an outer surface of the hub assembly, the contrasting member being a patterned member and having a color that provides an effective background to fluid in the flashback chamber, the contrasting member including a portion opposite from the window section such that fluid in the flashback chamber can be viewed through the substantially transparent window section against the contrasting member.

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