US 12,434,037 B2
Confirmation of catheter placement within a vein
Yiping Ma, Layton, UT (US); S. Ray Isaacson, Layton, UT (US); Weston F. Harding, Lehi, UT (US); Joseph Spataro, Cottonwood Heights, UT (US); Huy Tran, Riverton, UT (US); Jonathan Karl Burkholz, Salt Lake City, UT (US); Mohankumar Natesan, Singapore (SG); Kiat Jin Cheng, Singapore (SG); and Kathryn Willybiro, Park City, UT (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed on Nov. 7, 2022, as Appl. No. 17/982,310.
Application 17/982,310 is a continuation of application No. 16/741,911, filed on Jan. 14, 2020, granted, now 11,517,722.
Claims priority of provisional application 62/794,439, filed on Jan. 18, 2019.
Prior Publication US 2023/0127362 A1, Apr. 27, 2023
Int. Cl. A61M 25/06 (2006.01); A61M 25/00 (2006.01); A61M 25/01 (2006.01)
CPC A61M 25/0693 (2013.01) [A61M 25/0015 (2013.01); A61M 25/0067 (2013.01); A61M 2025/0002 (2013.01); A61M 2025/0166 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A catheter system, comprising:
a catheter adapter, comprising a distal end and a proximal end;
a catheter, comprising a distal end, a proximal end, a catheter lumen extending through the distal end of the catheter and the proximal end of the catheter, and an inner surface forming the catheter lumen, wherein the catheter extends distally from the distal end of the catheter adapter;
an introducer needle extending through the catheter, wherein the introducer needle comprises a distal end, a proximal end, an introducer needle lumen extending through the distal end of the introducer needle and the proximal end of the introducer needle, and an inner surface forming the introducer needle lumen, wherein the distal end of the introducer needle comprises a sharp distal tip and a notch proximal to the sharp distal tip, wherein the notch provides a fluid pathway from the introducer needle lumen to a gap;
the gap disposed between an outer surface of the introducer needle and the inner surface of the catheter and within the catheter lumen, wherein blood is configured to flow into the gap in response to placement of the introducer needle within vasculature; and
a sensor embedded in the inner surface of the catheter at the distal end of the catheter within the gap and aligned with the notch of the introducer needle, wherein the sensor is configured to detect the distal end of the introducer needle is within a vein; and
a plurality of other sensors, wherein the plurality of other sensors are aligned with a bevel of the introducer needle and within the introducer needle lumen.
 
8. A catheter system, comprising:
a catheter adapter, comprising a distal end and a proximal end;
a catheter, comprising a distal end, a proximal end, a catheter lumen extending through the distal end of the catheter and the proximal end of the catheter, and an inner surface forming the catheter lumen, wherein the catheter extends distally from the distal end of the catheter adapter;
an introducer needle extending through the catheter, wherein the introducer needle comprises a distal end, a proximal end, an introducer needle lumen extending through the distal end of the introducer needle and the proximal end of the introducer needle, and an inner surface forming the introducer needle lumen, wherein the distal end of the introducer needle comprises a sharp distal tip; and
a bio-impedance sensor, wherein the bio-impedance sensor comprises a first electrode and a second electrode, wherein the second electrode is configured to be secured to skin of a patient; and
a gap disposed between an outer surface of the introducer needle and the inner surface of the catheter and within the catheter lumen, wherein blood is configured to flow into the gap in response to placement of the introducer needle within vasculature, wherein the first electrode is embedded in the inner surface of the catheter at the distal end of the catheter proximate the gap.
 
13. A catheter system, comprising:
a catheter adapter, comprising a distal end and a proximal end;
a catheter, comprising a distal end, a proximal end, a catheter lumen extending through the distal end of the catheter and the proximal end of the catheter, and an inner surface forming the catheter lumen, wherein the catheter extends distally from the distal end of the catheter adapter, wherein the distal end of the catheter comprises a first hole and a second hole proximal to the first hole;
an introducer needle extending through the catheter, wherein the introducer needle comprises a sharp distal tip, an annular wall forming an introducer needle lumen, a first groove, and a second groove, wherein a distal end of the first groove is proximate the first hole, wherein a distal end of the second groove is proximate the second hole, wherein the first groove and the second groove are fluidically separated from the introducer needle lumen by the annular wall.