US 12,256,951 B2
Catheter systems, kits, and methods for gaining access to a vessel
John Gurley, Lexington, KY (US)
Assigned to Merit Medical Systems, Inc., South Jordan, UT (US)
Filed by Merit Medical Systems, Inc., South Jordan, UT (US)
Filed on Oct. 3, 2023, as Appl. No. 18/480,290.
Application 17/089,551 is a division of application No. 15/444,510, filed on Feb. 28, 2017, granted, now 10,856,892, issued on Dec. 8, 2020.
Application 18/480,290 is a continuation of application No. 17/089,551, filed on Nov. 4, 2020, granted, now 11,801,065.
Claims priority of provisional application 62/301,397, filed on Feb. 29, 2016.
Prior Publication US 2024/0156475 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/22 (2006.01); A61M 25/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/22 (2013.01) [A61B 2017/22094 (2013.01); A61B 2090/3966 (2016.02); A61M 2025/0095 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for providing access to a central venous system of a patient comprising:
introducing a catheter and a projection angle catheter into a patient in an area remote from a predetermined exit area, wherein the projection angle catheter is configured to extend out a side aperture of a distal tip of the catheter at a projection angle, and a needle wire is configured to extend through the projection angle catheter, wherein the catheter has a distal end aperture at a distal end of the distal tip configured such that the needle wire can extend through the distal end aperture;
advancing the distal tip of the catheter into a target in the central venous system, the distal tip being configured to penetrate the target without deflection when advanced into the target;
advancing the needle wire through the projection angle catheter when the distal tip of the catheter is disposed in the target, such that a distal end of the needle wire advances at an angle relative to the catheter and penetrates the skin of the patient adjacent the predetermined exit area thereby providing the distal end of the
needle wire exterior to the skin, the needle wire having a bending stiffness sufficient to penetrate a muscle tissue and the skin of the patient without deflection.