US 12,011,555 B2
Guidewire with core centering mechanism
Clark C. Davis, Holladay, UT (US); Edward J. Snyder, Park City, UT (US); and Todd H. Turnlund, Park City, UT (US)
Assigned to Scientia Vascular, Inc., West Valley City, UT (US)
Filed by Scientia Vascular, Inc., West Valley City, UT (US)
Filed on Jan. 14, 2020, as Appl. No. 16/742,211.
Claims priority of provisional application 62/792,775, filed on Jan. 15, 2019.
Prior Publication US 2020/0222672 A1, Jul. 16, 2020
Int. Cl. A61M 25/09 (2006.01)
CPC A61M 25/09 (2013.01) [A61M 2025/09091 (2013.01); A61M 2025/09166 (2013.01); A61M 2025/09175 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An intravascular device, comprising:
a core having a proximal section and a distal section;
an outer tube coupled to the core such that the distal section of the core passes into and is encompassed by the outer tube, the outer tube and the core defining an annular space between an inner surface of the outer tube and an outer surface of the distal section of the core; and
first and second centering mechanisms positioned within at least a portion of the annular space, the first centering mechanism extending farther proximally than the second centering mechanism; and
radiopaque marker coil positioned within at least a portion of the annular space and positioned distal of the second centering mechanism,
wherein the first and second centering mechanisms are configured to limit movement of the core out of a radially centered position within the outer tube,
wherein the first and second centering mechanisms extend at least 15% of a length of the outer tube, and
wherein the first centering mechanism extends over the second centering mechanism and over at least a portion of the radiopaque marker coil.