Flashback chamber visual enhancement
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
Featured is a medical infusion device for vascular access with enhanced flashback visualization that includes a hub assembly having a flashback chamber. The hub assembly includes a proximal portion, a distal portion and a substantially transparent window section intermediate the proximal portion and distal portion. A needle is coupled to the flashback chamber so that fluid flows through the lumen of the needle into the flashback chamber after the needle is inserted into a blood vessel. A contrasting member is disposed on at least a portion of the hub assembly, so that when blood enters the flashback chamber, the contrasting member provides a high-contrast background when viewed through the window section.
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Citations
19 Claims
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1. A medical infusion device for vascular access with enhanced flashback visualization, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18, 19)
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12. A medical infusion device with enhanced flashback visualization, comprising:
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a hub assembly including a proximal portion, a distal portion, and a substantially transparent window section intermediate the proximal portion and distal portion; wherein the hub assembly includes an outlet and a plug in the outlet to allow egress of gas therethrough; a needle hub mounted on the hub assembly, the needle hub defining a chamber therein, wherein the chamber is received within the huh assembly; a needle including a lumen fluidly coupled to the chamber so that fluid can flow through the lumen into the chamber; and a contrasting member disposed on at least a portion of an outer surface of the hub assembly, the contrastive member having a color that provides an effective background to fluid in the chamber, the contrasting member including a portion opposite from the window section such that fluid in the chamber is viewed through the window against the contrasting member, the contrasting member including alternating raised portions and indented portions; wherein the contrasting member is formed by a two-shot injection molding process.
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13. A medical infusion device with enhanced flashback visualization, comprising;
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a hub assembly including a proximal portion, a distal portion, and a substantially transparent window section intermediate the proximal portion and distal portion; wherein the hub assembly includes an outlet and a plug in the outlet to allow egress of gas therethrough; a needle hub mounted on the hub assembly, the needle hub defining a chamber therein, wherein the chamber is received within the hub assembly; a needle having a lumen fluidly coupled to the chamber so that fluid can flow through the lumen into the chamber; and a contrasting member disposed on at least a portion of an outer surface of the hub assembly, the contrasting member having a color that provides an effective background to fluid in the chamber, and the contrasting member including raised sections intermittently disposed on at least a portion of the hub assembly, the contrasting member including a portion opposite from the window section such that fluid in the chamber is viewed through the window against the contrasting member. - View Dependent Claims (14, 15)
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Specification