# US 9,039,726 B2 · Filamentary devices for treatment of vascular defects > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,726 B2 - Document ID: US9039726B2 - Status: Granted - Kind: B2 - Application number: 12/911,034 - Filed: 2010-10-25 - Published: 2011-08-25 - Granted: 2015-05-26 - Earliest claimed: 2008-04-21 - Assignees: Covidien LP - Applicants: Frank P. Becking - Inventors: Frank P. Becking - Web page: https://patentgrep.com/patent/US9039726B2 ## CPC - A61B 17/12159: {Solid plugs; being solid before insertion} - A61B 17/12022: {Occluding by internal devices, e.g. balloons or releasable wires (plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20)} - A61B 17/12031: {complete occlusion} - A61B 17/12109: {in a blood vessel} - A61B 17/12113: {within an aneurysm} - A61B 17/12118: {for positioning in conjunction with a stent} - A61B 17/1215: {comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated} - A61B 17/12172: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)} - A61M 29/02: Dilators made of swellable material {(balloon catheters for angioplasty A61M25/104)} - A61B 2017/00526: {Methods of manufacturing} - A61B 2017/00862: {elastic or resilient} - A61B 2017/00867: {shape memory effect} - A61B 2017/1205: {Introduction devices} - A61B 2017/12054: {Details concerning the detachment of the occluding device from the introduction device} - A61B 2017/12068: {detachable by heat} - A61B 2018/00416: {Treatment of aneurisms} - A61B 2090/3966: {Radiopaque markers visible in an X-ray image} - Y10T 156/1051: by folding - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Braid-balls suitable for aneurysm occlusion and/or parent vessel occlusion/sacrifice (e.g., in treating neurovascular defects) are disclosed. Especially for aneurysm treatment, but also for either one of the aforementioned treatments, the form of the ball is very important. In particular, the density of the device is paramount in applications where braid itself is intended to moderate or stop blood flow—allowing thrombosis within a volume formed by the ball. ## Claims ### Claim 1 A device for treatment of a patient's vasculature, comprising: a self-expanding resilient permeable shell having a proximal portion, a distal portion, a longitudinal axis and further comprising: a plurality of elongate resilient filaments with a woven structure secured relative to each other at the proximal and distal portions thereof, the filaments (i) radially converging to a first cross-section at each of the proximal and distal portions to form respective proximal and distal filament tufts, and (ii) radially diverging from the first cross-section to a second cross-section, larger than the first cross-section, such that free ends of the filaments flare outwardly within the shell for promoting thrombosis of blood; a radially constrained elongated state configured for delivery within a microcatheter with the thin woven filaments extending longitudinally from the proximal portion to the distal portion radially adjacent each other along a length of the filaments; and an expanded relaxed state with a globular and longitudinally shortened configuration relative to the radially constrained state with the woven filaments forming the self-expanding resilient permeable shell in a smooth path radially expanded from the longitudinal axis between the proximal portion and distal portion including a plurality of openings in the shell formed between the woven filaments, the largest of said openings being configured to allow blood flow through the openings at a velocity below a thrombotic threshold velocity. ### Claim 2 (depends on 1) The device of claim 1, wherein at least the shell distal portion includes a bend in a recessed configuration such that the distal filament tuft is disposed axially within a nominal contour of the permeable shell structure in the expanded state. ### Claim 3 (depends on 2) The device of claim 2, wherein the proximal portion of the shell further comprises a bend in a recessed configuration such that the proximal filament tuft is withdrawn axially within the nominal permeable shell. ### Claim 4 (depends on 1) The device of claim 1, wherein the filaments of the permeable shell are secured relative to each other in wraps or bands. ### Claim 5 (depends on 1) The device of claim 1, further comprising a distal hub secured to the distal filament tuft. ### Claim 6 (depends on 1) The device of claim 1, further comprising a proximal hub secured to the proximal filament tuft. ### Claim 7 (depends on 1) The device of claim 1, further comprising a band forming a cavity for a detachment tether. ### Claim 8 (depends on 7) The device of claim 7, further comprising a detachment tether secured through the cavity of the proximal hub. ### Claim 9 (depends on 1) The device of claim 1, wherein the filaments of the permeable shell have a transverse dimension of about 0.001 inch to about 0.003 inch. ### Claim 10 (depends on 1) The device of claim 1, wherein the permeable shell comprises at least about 72 filaments. ### Claim 11 (depends on 1) The device of claim 1, wherein the filaments of the permeable shell comprise a superelastic material. ### Claim 12 (depends on 11) The device of claim 11, wherein the superelastic material comprises a shape memory metal. ### Claim 13 (depends on 1) The device of claim 1, wherein the filaments of the permeable shell comprise a shape memory material that is heat set in a configuration of the relaxed expanded state. ### Claim 14 (depends on 13) The device of claim 13, wherein the shape memory metal comprises a NiTi alloy. ### Claim 15 (depends on 1) The device of claim 1, wherein the largest openings formed between adjacent filaments of a defect spanning portion of the permeable shell are about 0.017 inches to about 0.032 inches. ### Claim 16 A delivery system for deployment of a device for treatment of a patient's vasculature, comprising: a microcatheter having an inner lumen extending a length thereof; a device for treatment of a patient's vasculature disposed within the inner lumen of the microcatheter and comprising a self-expanding resilient permeable shell of thin filaments, the permeable shell having a proximal portion, a distal portion, a longitudinal axis, a radially constrained elongated state, and an expanded state; wherein in the constrained state, the device is configured for delivery within a microcatheter with the thin woven filaments extending longitudinally from the proximal portion to the distal portion radially adjacent each other, and wherein in the expanded state, the filaments of the proximal and distal portions (i) radially converge to a first cross-section at each of the proximal and distal portions to form respective proximal and distal filament tufts, and (ii) radially diverge from the first cross-section to a second cross-section, larger than the first cross-section, such that free ends of the filaments flare outwardly within the shell for promoting thrombosis of blood, the device having, in the expanded state, a globular and axially shortened configuration relative to the constrained state with the woven filaments forming the self-expanding resilient permeable shell in a smooth path radially expanded from the longitudinal axis between the proximal portion and distal portion and a plurality of openings in the shell formed between the woven filaments, the permeable shell further having a portion when in the expanded relaxed state that is configured to span an opening of a patient's vascular defect; and an elongate delivery apparatus having a proximal end and a distal end releasably secured to a proximal hub of the device. ### Claim 17 (depends on 16) The system of claim 16, wherein at least the shell distal portion includes a bend in a recessed configuration such that the distal filament tuft is disposed axially within a nominal contour of the permeable shell structure in the expanded state. ### Claim 18 (depends on 17) The system of claim 17, wherein the proximal portion of the shell further comprises a bend in a recessed configuration such that the proximal filament tuft is disposed axially within the nominal contour of the permeable shell structure in the expanded state. ### Claim 19 (depends on 16) The system of claim 16, wherein the filaments of the permeable shell are secured relative to each other in wraps or bands. ### Claim 20 (depends on 16) The system of claim 16, wherein the device comprises a distal hub secured to the distal filament tuft. ### Claim 21 (depends on 16) The system of claim 16, wherein the device comprises a proximal hub secured to the proximal filament tuft.