US 11,717,430 B2
Method and system for delivering a self-expanding stent to the venous sinuses
Jeffrey P. Callister, Deephaven, MN (US)
Assigned to Serenity Medical, Inc., Deephaven, MN (US)
Filed by Serenity Medical, Inc., Deephaven, MN (US)
Filed on Mar. 5, 2021, as Appl. No. 17/193,193.
Application 17/193,193 is a continuation of application No. 15/456,352, filed on Mar. 10, 2017, granted, now 10,940,030.
Prior Publication US 2022/0023079 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/966 (2013.01); A61F 2/915 (2013.01); A61F 2/82 (2013.01); A61F 2/95 (2013.01)
CPC A61F 2/966 (2013.01) [A61F 2/915 (2013.01); A61F 2/9517 (2020.05); A61F 2002/825 (2013.01); A61F 2002/91575 (2013.01); A61F 2230/0067 (2013.01); A61F 2230/0069 (2013.01); A61F 2250/0029 (2013.01); A61F 2250/0039 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
inserting a stent delivery system into venous sinuses, the stent delivery system comprising:
a delivery handle at a proximal end of the stent delivery system;
a catheter hub;
a delivery tip at a distal end of the stent delivery system, wherein the delivery tip comprises a tip distal end and a tip proximal end, and wherein the delivery tip has a first flexibility;
a shaft extending from the delivery handle through the catheter hub and into the delivery tip, wherein the shaft comprises a coil and a stent bed, the coil having a coil distal end and a coil proximal end, the stent bed between the coil distal end and the tip proximal end;
a stent loaded on to the stent bed, wherein the stent comprises a stent distal end, a stent proximal end, and a body between the stent distal end and the stent proximal end, the body defining a lumen extending through the stent from the stent distal end to the stent proximal end in a deployed state, and wherein a first portion of the body at the stent distal end has a greater flexibility than a second portion of the body at the stent proximal end; and
sheathing coupled to the catheter hub and moveable over the stent bed between pre-deployed and deployed positions, wherein the sheathing extends over the stent bed if in the pre-deployed position, wherein the sheathing is pulled back from the stent bed if in the deployed position, wherein the stent is compressed by the sheathing on the stent bed if in the pre-deployed position, wherein the stent expands if the sheathing is pulled back from the stent bed in the deployed position, wherein the sheathing comprises a sheathing distal end and a sheathing proximal end, and wherein the sheathing comprises a flexible section at the sheathing distal end, a semi-flexible section adjacent the flexible section, and a stiff section adjacent the semi-flexible section,
wherein the combination of the stent bed, the first portion of the body of the stent, and the flexible section of the sheathing has a second flexibility that is less than the first flexibility, and
wherein the combination of the stent bed, the second portion of the body of the stent, and the flexible section of the sheathing has a third flexibility that is less than the second flexibility;
navigating the stent delivery system to position the stent at a target site in the venous sinuses, wherein the target site spans from a distal end of the transverse sinus into a sigmoid sinus;
deploying the stent at the target site by pulling the sheathing back over the stent; and
removing the stent delivery system from the venous sinuses by pulling the delivery tip through the lumen in the stent and out of the venous sinuses.