US 12,296,112 B2
Microfabricated catheter devices with high axial strength
Clark C. Davis, Holladay, UT (US)
Assigned to Scientia Vascular, Inc., West Valley, UT (US)
Filed by SCIENTIA VASCULAR, Inc., West Valley City, UT (US)
Filed on Oct. 4, 2021, as Appl. No. 17/493,265.
Claims priority of provisional application 63/087,410, filed on Oct. 5, 2020.
Prior Publication US 2022/0105312 A1, Apr. 7, 2022
Int. Cl. A61M 25/00 (2006.01); A61M 25/09 (2006.01); A61M 25/10 (2013.01); A61M 25/01 (2006.01)
CPC A61M 25/0045 (2013.01) [A61M 25/0053 (2013.01); A61M 25/001 (2013.01); A61M 25/0013 (2013.01); A61M 25/0021 (2013.01); A61M 25/0023 (2013.01); A61M 25/0026 (2013.01); A61M 2025/0042 (2013.01); A61M 25/005 (2013.01); A61M 25/0054 (2013.01); A61M 25/0108 (2013.01); A61M 25/0138 (2013.01); A61M 25/0147 (2013.01); A61M 25/09 (2013.01); A61M 2025/09108 (2013.01); A61M 2025/0915 (2013.01); A61M 25/104 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A microfabricated, elongate tube member for an intravascular device, the elongate tube member extending along a longitudinal axis and comprising:
a plurality of circumferentially extending rings, each ring having an axial length;
a plurality of transverse cuts each positioned between adjacent rings, each transverse cut extending in a direction transverse to the longitudinal axis of the tube member;
a plurality of axially extending beams each extending from one ring to another to connect adjacent rings; and
a plurality of wedge-shaped axial cuts, the plurality of wedge-shaped axial cuts including
(i) proximal cuts that, for each beam, begin at an edge of an adjoining proximal ring and extend partially into the adjoining proximal ring in a substantially proximal axial direction so that the beam is at least partially nested within the length of the adjoining proximal ring, wherein each proximal cut is widest where it begins at the edge of the adjoining proximal ring and progressively narrows while extending along the proximal axial direction into the adjoining proximal ring, and
(ii) distal cuts that, for each beam, begin at an edge of an adjoining distal ring and extend partially into the adjoining distal ring in a substantially distal axial direction so that the beam is at least partially nested within the length of the adjoining distal ring, wherein each distal cut is widest where it begins at the edge of the adjoining distal ring and progressively narrows while extending along the distal axial direction into the adjoining distal ring;
wherein the proximal cuts and/or distal cuts of the plurality of wedge-shaped axial cuts extend further into the ring on a first section of the elongate tube member relative to a second section of the elongate tube member;
wherein the first section of the elongate tube member is positioned proximally or distally of the second section; and
wherein the first section of the elongate tube member has a flexibility different than a flexibility of the second section of the elongate tube member.