US 11,864,988 B2
Fenestrated sheath for embolic protection during transcarotid carotid artery revascularization
Sumaira MacDonald, Sunnyvale, CA (US); and Stewart M. Kume, Sunnyvale, CA (US)
Assigned to Silk Road Medical, Inc., Sunnyvale, CA (US)
Filed by Silk Road Medical, Inc., Sunnyvale, CA (US)
Filed on Sep. 9, 2021, as Appl. No. 17/470,213.
Application 17/470,213 is a continuation of application No. 16/171,784, filed on Oct. 26, 2018, granted, now 11,141,259.
Claims priority of provisional application 62/580,869, filed on Nov. 2, 2017.
Prior Publication US 2022/0202552 A1, Jun. 30, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/01 (2006.01); A61M 25/00 (2006.01); A61M 25/09 (2006.01); A61F 2/954 (2013.01); A61B 17/12 (2006.01); A61M 25/06 (2006.01); A61M 25/10 (2013.01)
CPC A61F 2/014 (2020.05) [A61B 17/12 (2013.01); A61F 2/954 (2013.01); A61M 25/0032 (2013.01); A61M 25/09 (2013.01); A61M 2025/0008 (2013.01); A61M 2025/0681 (2013.01); A61M 2025/1052 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for treating a carotid artery, comprising:
positioning an arterial access device having a distal sheath into a common carotid artery through an access location in a neck of a patient, the arterial access device comprising:
a distal sheath adapted to be introduced into a carotid artery through a wall of the carotid artery, the sheath having a lumen extending between a distal opening and a proximal opening;
wherein the distal sheath includes a material that defines a plurality of spaces evenly distributed and uninterrupted along at least a portion of a length of the distal sheath; and
wherein the distal sheath includes at least one fenestration aligned with at least one of the spaces defined by the material;
occluding blood flow at an occlusion location of the common carotid artery to establish retrograde blood flow through the common carotid artery such that blood flows into the lumen of the arterial access device, wherein the occlusion location is located proximal of the distal opening so as to form a zone between the occlusion location and the distal opening;
wherein the blood flows into the distal sheath via at least one of the distal opening and the at least one fenestration.