US 12,383,709 B2
Biliary access catheter system and methods for accessing the biliary tree
Mark D. Wood, Shrewsbury, MA (US); and John Deane, Salem, NH (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Jan. 19, 2021, as Appl. No. 17/152,546.
Application 17/152,546 is a division of application No. 15/040,943, filed on Feb. 10, 2016, granted, now 10,905,859.
Application 15/040,943 is a division of application No. 13/727,913, filed on Dec. 27, 2012, granted, now 9,278,198, issued on Mar. 8, 2016.
Claims priority of provisional application 61/580,979, filed on Dec. 28, 2011.
Prior Publication US 2021/0162182 A1, Jun. 3, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 25/00 (2006.01); A61M 25/01 (2006.01); A61M 25/09 (2006.01); A61M 25/10 (2013.01)
CPC A61M 25/09 (2013.01) [A61M 25/0023 (2013.01); A61M 25/01 (2013.01); A61M 2025/0183 (2013.01); A61M 2025/09125 (2013.01); A61M 2025/1045 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dual-wire catheter system for accessing a body lumen along the biliary and/or pancreatic tract, the catheter system comprising:
a catheter shaft having a proximal end, a distal end, a guidewire lumen, and a guidewire channel; and
a guidewire disposed within the guidewire channel;
wherein the guidewire lumen extends along a length of the catheter shaft; and
wherein the guidewire channel is defined in an outer wall of the catheter shaft, the guidewire channel having a distal end proximal of the distal end of the catheter shaft, the distal end of the guidewire channel defining a distal port where the guidewire disposed therein exits the channel, the guidewire channel having a length and being radially open along an entirety of its length, and wherein the guidewire, when disposed within and parallel with the guidewire channel, is configured to extend radially outward of and beyond the catheter shaft along the entire length of the guidewire channel, wherein the guidewire channel distally reduces in depth.