# US 10,869,774 B2 · Pull wire and spool for vascular intervention device delivery system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,869,774 B2 - Document ID: US10869774B2 - Status: Granted - Kind: B2 - Application number: 16/176,503 - Filed: 2018-10-31 - Published: 2019-02-28 - Granted: 2020-12-22 - Earliest claimed: 2014-09-15 - Assignees: Cook Medical Technologies LLC - Applicants: Cook Medical Technologies LLC - Inventors: Sean Cummins; Darach McGrath - Web page: https://patentgrep.com/patent/US10869774B2 ## CPC - A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts - A61F 2/844: folded prior to deployment - A61F 2/962: having an outer sleeve - A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod - A61B 2017/00407: {Ratchet means} - A61F 2/9517: {handle assemblies therefor} - A61F 2230/0069: cylindrical - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A vascular intervention device delivery system, such as for implanting a self expanding stent, includes a thumbwheel rotatably mounted in a handle. The thumbwheel includes a radially outward thumb surface and a spool. A catheter has a proximal end attached to the handle, and a distal carrier segment for mounting a vascular intervention device thereon. A retractable sheath is movable from a first position covering the distal carrier segment to a second position retracted proximally uncovering the distal carrier segment. A pull extends between the thumbwheel and the retractable sheath. The pull terminates at a proximal end with an integral anchor that extends through an opening in a wall that separates an inner surface of spool from a collection surface. The retractable sheath moves responsive to rotation of the thumbwheel in a first direction. ## Claims ### Claim 1 A vascular intervention device delivery system comprising: a handle; a thumbwheel rotatably mounted in the handle for rotation about an axis of rotation, and having a radially outward thumb surface and a spool with a collection surface; a catheter with a proximal end attached to the handle, and a distal carrier segment for mounting a vascular intervention device thereon; a retractable sheath movable from a first position covering the distal carrier segment to a second position retracted proximally uncovering the distal carrier segment; a pull, which has a cross section with a thickness that is less than a width, extending between the thumbwheel and the retractable sheath, and including a distal segment extending distally beyond a distal end of the handle; the retractable sheath moving responsive to rotation of the thumbwheel in a first direction; and wherein the pull is wound at least once completely around the collection surface when the retractable sheath is at the first position. ### Claim 2 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the pull is a thin band of spring steel with a curved cross section. ### Claim 3 (depends on 1) The vascular intervention device delivery system of claim 1 wherein a proximal end of the pull is annealed and bent back on itself to form an integral anchor that is received in a slot defined by the spool. ### Claim 4 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the pull terminates at one end in an integral anchor received in a slot defined by the thumbwheel that opens in a direction parallel to the axis of rotation; and the slot is closer to the axis of rotation than the collection surface is to the axis of rotation. ### Claim 5 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the handle includes a hub at a fixed location that defines the axis of rotation; and the pull extends through an opening in the collection surface that has a centerline that intersects the axis of rotation. ### Claim 6 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the spool has an inner surface separated from the collection surface by a cylindrically shaped wall, and the pull extends through a wall opening in the cylindrically shaped wall and terminates at a proximal end with an integral anchor that is a deformed segment of the pull in contact with the inner surface. ### Claim 7 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the pull terminates at one end in an integral anchor that is a metal band bent back on itself at a plurality of bends that result in the integral anchor having enlarged portions that extend above and below a thickness profile of the pull. ### Claim 8 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the pull terminates at one end in a plurality of bends that define an integral anchor that includes a concave portion that matches an outer radius of a hub outer surface. ### Claim 9 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the collection surface has a circular cross section. ### Claim 10 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the collection surface is bound on one side by a rim having a rim radius that is greater than a radius of the collection surface; and the thumb surface and the rim are located on opposite sides of the collection surface along the axis of rotation. ### Claim 11 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the pull is metallic and has a proximal end bent back on itself into a T-shaped integral anchor. ### Claim 12 (depends on 11) The vascular intervention device delivery system of claim 11 wherein the spool has an inner surface separated from the collection surface by a cylindrically shaped wall; and the integral anchor is in contact with the inner surface. ### Claim 13 (depends on 12) The vascular intervention device delivery system of claim 12 wherein the collection surface has a circular cross section. ### Claim 14 (depends on 13) The vascular intervention device delivery system of claim 13 wherein the handle includes a hub at a fixed location that defines the axis of rotation. ### Claim 15 (depends on 14) The vascular intervention device delivery system of claim 14 wherein the integral anchor is received in a slot defined by the thumbwheel that opens in a direction parallel to the axis of rotation; and the slot is closer to the axis of rotation than the collection surface is to the axis of rotation. ### Claim 16 (depends on 15) The vascular intervention device delivery system of claim 15 wherein the collection surface is bound on one side by a rim having a rim radius that is greater than a radius of the collection surface. ### Claim 17 (depends on 16) The vascular intervention device delivery system of claim 16 wherein the pull is a thin band of spring steel with a curved cross section. ### Claim 18 (depends on 1) The vascular intervention device delivery system of claim 1 wherein the collection surface has a width that is about twice the width of the pull. ### Claim 19 A vascular intervention device delivery system comprising: a handle; a thumbwheel rotatably mounted in the handle for rotation about an axis of rotation, and having a radially outward thumb surface and a spool with a collection surface; a catheter with a proximal end attached to the handle, and a distal carrier segment for mounting a vascular intervention device thereon; a retractable sheath movable from a first position covering the distal carrier segment to second position retracted proximally uncovering the distal carrier segment; a pull extending between the thumbwheel and the retractable sheath, and including a distal segment extending distally beyond a distal end of the handle; the retractable sheath moving responsive to rotation of the thumbwheel in a first direction; wherein the pull is wound at least once completely around the collection surface when the retractable sheath is at the first position; wherein the pull is metallic and has a proximal end bent back on itself into a T-shaped integral anchor; wherein the spool has an inner surface separated from the collection surface by a cylindrically shaped wall; the integral anchor is in contact with the inner surface; wherein the collection surface has a circular cross section; wherein the handle includes a hub at a fixed location that defines the axis of rotation; wherein the integral anchor is received in a slot defined by the thumbwheel that opens in a direction parallel to the axis of rotation; the slot is closer to the axis of rotation than the collection surface is to the axis of rotation; wherein the collection surface is bound on one side by a rim having a rim radius that is greater than a radius of the collection surface; wherein the pull is a thin band of spring steel with a curved cross section; and wherein the integral anchor includes a concave portion that matches an outer radius of an outer surface of the hub. ### Claim 20 (depends on 19) The vascular intervention device delivery system of claim 19 wherein the slot has a shape that matches, and is sized to receive, a profile shape of the integral anchor.