Granted Patent
B2
US 12,496,089 · App. 17/878,088 · Granted Dec 16, 2025
Vessel blockage passing
Inventors:
Jordan Pollack (Tel-Aviv, IL); Gal Atarot (Kfar Saba, IL); Tanhum Feld (Moshav Merhavia, IL); Ben Adam Friesem (Tel Aviv, IL)
Assignee:
VeinWay Ltd.
A61B17/3207A61M25/04A61B2017/00309A61B2017/00331A61B2017/22044A61B2017/22071A61B2017/22094A61B2090/3966A61M25/1002A61M25/1011A61M25/10184
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Abstract
Apparatus for passing a blocked vein, including: (a) an intravascular catheter body defining at least one lumen; (b) a radially expandable anchor at a distal end of said catheter; and (c) a penetration tool sized and shaped to be delivered by the lumen to a point distal of the expandable anchor, the penetration tool including a tip and configured for being pushed through venous blockage more than one week old and present with a young's modulus greater than 1 MPa. Optionally, the penetration tool tip comprises a sharpened tip. Optionally or additionally, the penetration tool tip is controllably bendable.
Claims (31)
1 . An apparatus for passing a blocked blood vessel, comprising:
(a) an intravascular catheter body defining at least one lumen;
(b) a radially expandable anchor at a distal end of said catheter; and
(c) a penetration tool sized and shaped to be delivered by said at least one lumen to a point distal of said radially expandable anchor, said penetration tool including a tip and configured for being pushed through venous-a blood vessel blockage more than one week old and having a young's modulus greater than 1 MPa;
wherein said apparatus further comprises an axially slidable sheath in said at least one lumen and outside said penetration tool and configured to shape said penetration tool;
wherein said penetration tool is bendable at a bend location at a distal end thereof such that said tip is steerable; and wherein said penetration tool is configured to only bend in one direction.
2 . The apparatus according to claim 1 , wherein said penetration tool tip comprises a sharpened tip.
3 . The apparatus according to claim 1 , wherein said tip is hollow.
4 . The apparatus according to claim 1 , wherein said penetration tool is stiff enough to be pushed through a solid such blood vessel blockage.
5 . The apparatus according to claim 1 , wherein said penetration tool is bendable at an angle selectable between 0 and 60 degrees.
6 . The apparatus according to claim 1 , wherein said penetration tool is adapted for said bending by pre-cutting thereof and wherein said pre-cutting comprises defining cuts on a concave side of said penetration tool which resist bending after reaching a pre-selected bending angle.
7 . The apparatus according to claim 1 , wherein said penetration tool is adapted for said bending by pre-cutting thereof and wherein said pre-cutting uses different patterns of cuts on a ventral side and on a dorsal side of said penetration tool, one of said patterns configured to resist bending and another of said patterns configured to assist bending.
8 . The apparatus according to claim 1 , wherein said penetration tool is pre-bent.
9 . The apparatus according to claim 1 , wherein said penetration tool is formed of a super-elastic material.
10 . The apparatus according to claim 1 , wherein said expandable anchor comprises a balloon.
11 . The apparatus according to claim 10 , wherein said balloon has a distance of less than 3 mm between (i) a most distal section of the balloon which has a diameter of less than 20% of a maximal diameter of said balloon and (ii) a more proximal section of the balloon which has a diameter of more than 80% of said maximal diameter.
12 . The apparatus according to claim 10 , wherein said balloon has distal concavity facing axially.
13 . The apparatus according to claim 10 , wherein said balloon comprises: a flexible body, sized and shaped for insertion into a blood vessel, said body extending along an axial direction and said body defining a first axial location with a maximal expansion diameter at a resting state of said body; said body defining at least one circumferentially extending geometry at an axial location other than said first axial location, which geometry is configured to assist in folding of said body.
14 . The apparatus according to claim 10 , wherein said body is semi-compliant.
15 . The apparatus according to claim 13 , wherein said body is sealably mounted on an elongate shaft.
16 . The apparatus according to claim 13 , wherein said geometry comprises a radial crimp.
17 . The apparatus according to claim 13 , wherein said geometry is located at a distal side of said first axial location and is configured to support inversion of a more distal part of said body into a more proximal side of said body, during manufacture.
18 . The apparatus according to claim 13 , wherein said geometry is located at a proximal side of said first axial location and is configured to guide folding of said balloon during deflation thereof to preferentially collapse in a radial direction.
19 . The apparatus according to claim 1 , comprising a handle and wherein said handle comprises a first control for rotating and/or for bending said penetration tool and a second control for advancing and retracting said penetration tool.
20 . The apparatus according to claim 19 , wherein said handle comprises a control for bending said penetration tool.
21 . The apparatus according to claim 1 , comprising at least one radiopaque marker which indicates an expected bending direction of said penetration tool tip.
22 . The apparatus according to claim 1 , wherein said penetration tool is configured for rotation within said at least one lumen.
23 . The apparatus according to claim 1 , wherein said blood vessel blockage has a Young's modulus of at least 50 MPa.
24 . The apparatus according to claim 1 , wherein said blood vessel blockage has a content of at least 30% by volume fibrosis tissue and/or at least 30% by volume collagen.
25 . The apparatus according to claim 1 , wherein said penetration tool comprises a pull-wire attached thereto at a distal side thereof.
26 . The apparatus according to claim 1 , comprising a stylet configured to selectably change a shape of said penetration tool at said bend location when said stylet is within said bend location.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Sep 12, 2022
From: POLLACK, JORDAN; ATAROT, GAL; FELD, TANHUM; FRIESEM, BEN ADAM
To: VEINWAY LTD.
Reel/Frame 061056/0672 →
Continuity (3)
Continuation
PCTIL2022050716
· Jul 5, 2022
Provisional Application
63218421
· Jul 5, 2021
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