Granted Patent B2

US 12,465,727 · App. 18/237,328 · Granted Nov 11, 2025

Inventors: Jonathan Karl Burkholz (Salt Lake City, UT); Bart D. Peterson (Farmington, UT); Bin Wang (Irvine, CA); Ralph L. Sonderegger (Farmington, UT); Tyler Warner (Bluffdale, UT)

Assignee: Becton, Dickinson and Company

A61M25/0693A61M25/0606A61M25/0637

Abstract

Claims (11)

1 . An IV access device comprising:

a catheter adapter from which a catheter extends distally;

an extension tube coupled to the catheter adapter; and

a needle hub from which a needle extends distally, the needle hub being coupled to the catheter adapter such that the needle extends through the catheter, the needle having a proximal end; and

a path-defining structure;

wherein the needle hub further includes a flash chamber that is in fluid communication with a lumen of the needle thereby allowing blood to flow into a path within the flash chamber between the path-defining structure and the needle hub when a distal tip of the needle is contained within a patient's vein, wherein the path comprises a plurality of leaking channels configured to carry the blood from the proximal end of the needle in a distal direction and each comprising a groove in the path-defining structure, wherein the plurality of leaking channels are symmetrically spaced around an inner surface of an opening of the path-defining structure, wherein the path further comprises a top channel disposed along a top of the flash chamber and configured to carry the blood from the plurality of leaking channels in a proximal direction, wherein the path-defining structure is inserted into the flash chamber, wherein the path-defining structure and the path between the path-defining structure and the needle hub extend proximal to the proximal end of the needle.

2 . The IV access device of claim 1 , wherein proximal end of the needle includes an opening that is positioned within the flash chamber.

3 . The IV access device of claim 2 , wherein the IV access device includes a plug positioned proximal to the flash chamber, the plug venting air but blocking the flow of the blood from the flash chamber to an external environment.

4 . The IV access device of claim 2 , wherein the needle hub includes a needle retaining portion through which the needle extends, the opening of the needle being positioned proximal to the needle retaining portion.

5 . The IV access device of claim 1 , wherein the needle includes a notch positioned towards the distal tip of the needle, wherein blood flowing through the notch and into the catheter provides a first confirmation of proper catheter placement and blood flowing into the flash chamber provides second confirmation of proper catheter placement.

6 . The IV access device of claim 1 , wherein the catheter adapter includes a wing and the needle hub includes a paddle grip.

Assignments (1)

Continuity (12)

References Cited (327)