Iv catheter with vein entry indication

Patent metadata

Field	Value
Publication number	US-2020230368-A1
Application number	US-201816486126-A
Country	US
Kind code	A1
Filing date	Mar 6, 2018
Priority date	Mar 6, 2017
Publication date	Jul 23, 2020
Grant date	—

Abstract

An intravenous catheter assembly that includes a catheter tube and an introducer needle that is disposed, at least in part, within the catheter tube when the introducer needle is in a ready for use position. The introducer needle includes a lateral surface that defines a relief that is positioned under the distal end of the catheter tube when the introducer is in the ready for use position to provide a flow path into a flash indication space.

First claim

What is claimed is:

1 . An intravenous catheter assembly comprising:
a catheter tube having a proximal end and a distal end; a catheter hub in fluid communication with the catheter tube and having proximal end, a distal end connected to the proximal end of the catheter tube, and a side port that provides fluid communication to an integrated extension tube; an elastomeric septum positioned at least partially inside of the catheter hub; an introducer that is movable between a ready for use position and a safe position, the introducer including a needle hub, an introducer needle and a safety feature; wherein the introducer needle has a proximal portion connected to the needle hub and distal end having a sharp distal tip, the introducer needle being disposed, at least in part, within the catheter tube when the introducer needle is in a ready for use position and defining a flash indication space between the catheter tube and the introducer needle, the introducer needle further including a lateral surface that defines a relief that is positioned under the distal end of the catheter tube when the introducer is in the ready for use position to provide a flow path into the flash indication space; and wherein the safety feature is positioned to prevent access to the sharp distal tip of the introducer needle when the introducer is in the safe position.

2 . The intravenous catheter of claim 1 , wherein a septum length is defined by a length from a proximal end to a distal end of the septum taken in a direction parallel to the introducer needle and a relief distance is defined from the sharp distal tip of the introducer needle to a proximal end of the relief, the relief distance being greater than the septum length.

3 . The intravenous catheter of claim 1 , wherein the relief includes a flat, machined surface.

4 . The intravenous catheter of claim 1 , wherein the relief is positioned on a chord that extends across a cross section of the introducer needle.

5 . The intravenous catheter of claim 1 , wherein the relief lies at an angle to the introducer needle.

6 . The intravenous catheter of claim 1 , wherein the relief includes a plurality of reliefs.

7 . The intravenous catheter of claim 6 , wherein the plurality of reliefs are positioned on different lateral sides of the introducer needle.

8 . The intravenous catheter of claim 1 , wherein the relief extends in a spiral about the introducer needle.

9 . The intravenous catheter of claim 1 , wherein the needle defines an internal lumen that extends from the proximal portion to the distal end of the introducer needle.

10 . The intravenous catheter of claim 9 , wherein the relief includes a slot that extends to the interior of the internal lumen from the flash space.

11 . The intravenous catheter of claim 1 , wherein the relief has a depth of between 0.001 inches and 0.004 inches.

Assignees

• Smiths Medical Asd Inc

Inventors

• Breindel Jay T
• Chheda Harsh D
• Goral David J
• Koehler Thomas T
• Muskatello James

Classifications

• A61M25/0606

  "Over-the-needle" catheter assemblies, e.g. I.V. catheters · CPC title

• A61M25/0693 Primary

  Flashback chambers · CPC title

• A61M25/0631 Primary

  having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle · CPC title