Patent US3509280A successfully refreshed from Google Patents.
US5876356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superelastic guidewire with a shapeable tip
Assignee: Cordis US Corp
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Filing: 1997-04-02
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Granted: 1999-03-02
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Expires: 2017-04-02
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 or notch 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 or notch and is inserted within the bore or notch. 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
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:42
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: 22
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 notch at said distal end, said notch 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 notch, said member being substantially entirely inserted within said notch, 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
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 notch at said distal end, said notch 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 notch, said member being substantially entirely inserted within said notch, 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 3
Dependent Claim
20 words
The guidewire according to claim 1, wherein said member has substantially the same size and shape as said longitudinal notch.
Claim 4
Dependent Claim
13 words
The guidewire according to claim 1 wherein said cover comprises a coiled spring.
Claim 5
Dependent Claim
19 words
The guidewire according to claim 1 further including a lubricious sleeve covering said distal end of said core wire.
Claim 6
Dependent Claim
11 words
The guidewire according to claim 4 wherein said sleeve comprises polytetrafluroethylene.
Claim 7
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 8
Dependent Claim
13 words
The guidewire according to claim 1 wherein said cover comprises a polymeric sleeve.
Claim 9
Dependent Claim
13 words
The guidewire according to claim 1 wherein said cover comprises a polytetrafluroethylene sleeve.
Claim 10
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 11
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.
Claim 12
Dependent Claim
171 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 notch at said distal end, said notch having a predetermined size, including an axial height, and shape; b) a means for making said proximal end of said core wire more rigid than the distal end; c) a member formed from a malleable material, said member having an axial height not substantially greater than said axial height of said notch, said member being substantially entirely inserted within said notch, 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 d) a cover surrounding said member and portions of the core wire immediately adjacent thereto.
Claim 13
Dependent Claim
171 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 notch at said distal end, said notch having a predetermined size, including an axial height, and shape; b) a means for making said proximal end of said core wire more rigid than the distal end; c) a member formed from a malleable material, said member having an axial height not substantially greater than said axial height of said notch, said member being substantially entirely inserted within said notch, 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 d) a cover surrounding said member and portions of the core wire immediately adjacent thereto.
Claim 14
Dependent Claim
39 words
The guidewire according to claim 11 wherein said means for making said proximal end of said core wire more rigid than said distal end comprises a hypotube covering a predetermined length of said proximal end of said core wire.
Claim 15
Dependent Claim
12 words
The guidewire according to claim 12 wherein said hypotube comprises stainless steel.
Claim 16
Dependent Claim
20 words
The guidewire according to claim 11, wherein said member has substantially the same size and shape as said longitudinal notch.
Claim 17
Dependent Claim
13 words
The guidewire according to claim 11 wherein said cover comprises a coiled spring.
Claim 18
Dependent Claim
19 words
The guidewire according to claim 11 further including a lubricious sleeve covering said distal end of said core wire.
Claim 19
Dependent Claim
23 words
The guidewire according to claim 16 wherein distal end of said core wire includes at least one lateral groove on its outer surface.
Claim 20
Dependent Claim
13 words
The guidewire according to claim 11 wherein said cover comprises a polymeric sleeve.
Claim 21
Dependent Claim
33 words
The guidewire according to claim 11 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 22
Dependent Claim
23 words
The guidewire according to claim 19 wherein said other alloying elements are selected from the group comprising of iron, cobalt, vanadium and copper.
References Cited (Backward Citations)
US4545390A
Cited
US4538622A
Cited
US4619274A
Cited
US4748986A
Cited
US4721117A
Cited
US4787399A
Cited
US4763647A
Cited
US4936312A
Cited
US4846186A
Cited
US4971490A
Cited
US5065769A
Cited
US5069226A
Cited
US5368049A
Cited
US5238005A
Cited
US5267573A
Cited
US5372144A
Cited
US5341818A
Cited
US5749837A
Cited
US5769796A
Cited
US5406960A
Cited
US5745071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-01 | 2002-08-31 | 2003-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-01 | 2006-08-31 | 2007-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-01 | 2010-08-31 | 2011-03-02 | $7700.00 | Window Closed / Lapsed |