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EP0868924A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Superelastic guidewire with a shapeable tip

Assignee: Cordis Corp
•
Filing: 1998-04-01
•
Granted: —
•
Expires: 2018-04-01
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Abstract

Abstract In accordance with the present invention there is provided a guidewire for navigating through the human vasculature. The guidewire has a distal end for insertion into the body, and a proximal end. The guidewire is made from a core wire formed from a superelastic material and has distal and proximal ends. The core wire has a bore adjacent its distal end, and the bore has a predetermined size and shape. The guidewire further includes a member formed from a malleable material. The member has the same size and shape as the bore and is inserted within the bore. Whereby, after the member is bent, the shape of the distal end of the core wire changes without elastically returning to its original shape. Lastly, the guidewire includes a cover which surrounds the member and portions of the core wire immediately adjacent thereto.

Inventors

  • 👤 Fernando M. Viera
  • 👤 Carol J. Barbre

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 14:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61L; A61L31/00; A61L31/02; A61L31/022; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/09175

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 154 words
A guidewire for navigating through the human vasculature, said guidewire having a distal end for insertion into the body, and a proximal end, said guidewire comprising: a) a core wire having distal and proximal ends and a longitudinal axis therebetween, said distal end of said core wire is formed from a superelastic material, an outer surface of said core wire having a longitudinal bore at said distal end, said bore having a predetermined size, including an axial height, and shape; and b) a member formed from a malleable material, said member having an axial height not substantially greater than said axial height of said bore, said member being substantially entirely inserted within said bore, whereby after said member is bent the shape of said distal end of said core wire changes without elastically returning to its original shape; and c) a cover surrounding said member and portions of the core wire immediately adjacent thereto.
Claim 2
Dependent Claim 20 words
The guidewire according to claim 1, wherein said member has substantially the same size and shape as said longitudinal bore.
Claim 3
Dependent Claim 13 words
The guidewire according to claim 1 wherein said cover comprises a coiled spring.
Claim 4
Dependent Claim 19 words
The guidewire according to claim 1 further including a lubricious sleeve covering said distal end of said core wire.
Claim 5
Dependent Claim 11 words
The guidewire according to claim 4 wherein said sleeve comprises polytetrafluroethylene.
Claim 6
Dependent Claim 23 words
The guidewire according to claim 4 wherein distal end of said core wire includes at least one lateral groove on its outer surface.
Claim 7
Dependent Claim 13 words
The guidewire according to claim 1 wherein said cover comprises a polymeric sleeve.
Claim 8
Dependent Claim 13 words
The guidewire according to claim 1 wherein said cover comprises a polytetrafluroethylene sleeve.
Claim 9
Dependent Claim 33 words
The guidewire according to claim 1 wherein said core wire comprises about 40 to about 49% titanium and the balance of the alloy being nickel and up to 10% of other alloying elements.
Claim 10
Dependent Claim 23 words
The guidewire according to claim 9 wherein said other alloying elements are selected from the group comprising of iron, cobalt, vanadium and copper.

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