Guide wire tip having roughened surface
AssigneeAbbott Cardiovascular Systems Inc.
InventorsPuneet Kamal Singh Gill, Jonathan Durcan, Jakub Truty, Matthew J. Chludzinski, John Simpson
Life of this patent
Estimating the term…
Abstract
A guidewire for use in penetrating through complex and stenosed lesions. The distal tip of the guidewire has a roughened surface to increase frictional engagement with calcified and fibrous tissue to increase the penetration of the distal tip and the guidewire into and through the lesion and reduce the likelihood of deflection of the guidewire tip. The average surface roughness of the distal tip is in the range from 1 micron to 200 microns.
Claims16
A guidewire, comprising:
- an elongated core member having a proximal core section and a distal core section;
- a distal tip attached to a distal end of the distal core section, the distal tip formed from a metallic alloy or polymer and having a roughened outer surface for use in penetrating stenosed lesions in vessels;
- and
- the distal tip abuts a wire coil having an outer surface, wherein at least a distal portion of the outer surface of the wire coil has the same roughened outer surface as the distal tip.
A method of manufacturing a distal tip for attaching to a guidewire, comprising:
- forming a metal alloy or polymer into a distal tip;
- roughening an outer surface of the distal tip for use in penetrating stenosed lesions in a vessel;
- and
- wherein the distal tip abuts a wire coil having an outer surface, and simultaneously roughening at least a portion of the wire coil outer surface and the distal tip outer surface.
Dependencies are inferred from the claim text.