US 12,420,069 B2
Internal carotid artery thrombectomy devices and methods
David F. Kallmes, Rochester, MN (US); Waleed Brinjikji, Rochester, MN (US); Brady Hatcher, Rogers, MN (US); and Randy Beyreis, Rogers, MN (US)
Assigned to Covidien LP, Mansfield, MA (US); and Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Appl. No. 17/415,431
Filed by Covidien LP, Mansfield, MA (US); and Mayo Foundation for Medical Education and Research, Rochester, MN (US)
PCT Filed Dec. 18, 2019, PCT No. PCT/US2019/067074
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/132003, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/781,738, filed on Dec. 19, 2018.
Prior Publication US 2022/0062597 A1, Mar. 3, 2022
Int. Cl. A61M 25/10 (2013.01); A61M 25/00 (2006.01)
CPC A61M 25/10 (2013.01) [A61M 25/005 (2013.01); A61M 25/0074 (2013.01); A61M 2025/0079 (2013.01); A61M 2025/105 (2013.01); A61M 2025/1081 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A balloon guiding sheath, comprising: an elongated sheath having a proximal end, a distal end opposite the proximal end, an inner tube extending between the proximal end and the distal end, an outer tube surrounding the inner tube and extending between the proximal end and the distal end, an access port located adjacent the proximal end, a distal port located adjacent the distal end, and a working lumen extending through the elongated sheath between the access port and the distal port; an inflatable balloon located on an outer surface of the elongated sheath adjacent the distal end and configured to, in an inflated state, occlude blood flow through a vessel at a treatment site, the inflatable balloon being fluidly coupled to an inflation lumen extending between the inflatable balloon and an inflation port located adjacent the proximal end; and at least one vent hole located between the outer surface of the elongated sheath and an inner surface of the inflatable balloon and on only a proximal side of the inflatable balloon, wherein the at least one vent hole is fluidly coupled to the inflatable balloon and configured to allow air to flow from the inflatable balloon to an external portion outside the balloon guiding sheath, and wherein the at least one vent hole is configured to prevent liquid from passing through the at least one vent hole.
 
2. A balloon guiding sheath, comprising:
an elongated sheath defining a proximal end, a distal end opposite the proximal end, a working lumen, and an inflation lumen;
an inflatable balloon located on an outer surface of the elongated sheath and configured to, in an inflated state, occlude blood flow through a vessel at a treatment site, the inflatable balloon being fluidly coupled to the inflation lumen; and
at least one vent hole fluidly coupled to the inflatable balloon and configured to allow media to flow from the inflatable balloon to a location outside the balloon guiding sheath and vent air in the media, wherein the at least one vent hole is located on only a proximal side of the inflatable balloon to enable the media vented from the inflatable balloon to flow away from the treatment site.