US 12,168,105 B2
Occlusion access systems
John Gurley, Lexington, KY (US); Joseph Creagan Trautman, Sunnyvale, CA (US); Brice Arnault De La Menardiere, Santa Cruz, CA (US); and Clayton Baldwin, Santa Cruz, CA (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. 18/480,388.
Application 18/480,388 is a continuation of application No. 17/811,807, filed on Jul. 11, 2022, granted, now 11,806,485.
Application 17/811,807 is a continuation of application No. 16/154,106, filed on Oct. 8, 2018, granted, now 11,383,065, issued on Jul. 12, 2022.
Application 16/154,106 is a continuation of application No. 13/680,327, filed on Nov. 19, 2012, granted, now 10,092,726, issued on Oct. 9, 2018.
Claims priority of provisional application 61/596,834, filed on Feb. 9, 2012.
Prior Publication US 2024/0139473 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/06 (2006.01); A61B 17/34 (2006.01); A61M 25/01 (2006.01); A61M 25/09 (2006.01); A61M 29/02 (2006.01); A61B 17/22 (2006.01); A61B 17/3207 (2006.01); A61B 90/00 (2016.01); A61M 25/00 (2006.01)
CPC A61M 25/0108 (2013.01) [A61B 5/064 (2013.01); A61B 17/3478 (2013.01); A61M 25/0136 (2013.01); A61M 25/09 (2013.01); A61M 29/02 (2013.01); A61B 2017/22094 (2013.01); A61B 2017/22095 (2013.01); A61B 17/3207 (2013.01); A61B 2090/3966 (2016.02); A61M 2025/0008 (2013.01); A61M 2025/0089 (2013.01); A61M 2025/0166 (2013.01); A61M 2029/025 (2013.01); A61M 2205/0266 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A catheter system for use by a user for gaining access to the central venous system of a patient through an occlusion in a large vessel in the upper chest region of said patient, the catheter system comprising:
a radiopaque target having a radiopaque area and a radiolucent area configured to be applied to the exterior of said patient and define an exit point;
an elongate working catheter having a proximal end and a distal end including a side aperture;
a handle coupled to said proximal end of said elongate working catheter;
a departure angle guide tube configured to be disposed distally within the elongate working catheter and adapted to emerge from the side aperture thereby defining a needle wire exit plane;
a needle wire contained and located within said departure angle guide tube and adapted for relative motion with respect to said departure angle guide tube and extension through the departure angle guide tube at a departure angle in the departure angle plane, said needle wire having a sharp dissection tip configured to be forced through the occlusion, the vessel wall intervening tissue and skin to exteriorize at the surface of the patient at said exit point.