Patent FR631319A successfully refreshed from Google Patents.
US5409015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformable tip super elastic guidewire
Assignee: Target Therapeutics Inc
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Filing: 1993-05-11
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Granted: 1995-04-25
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Expires: 2013-05-11
Abstract
Abstract This invention is a surgical device. It is a guidewire for use in a catheter and is used for accessing a targeted site within a system of lumen within a patient's body. The guidewire may be of a high elasticity metal alloy, preferably a Ni-Ti alloy, having specified physical parameters, and is especially useful for accessing peripheral or soft tissue targets. The "necked" guidewire tip also forms a specific parameter of the invention.
Inventors
- 👤 Thomas J. Palermo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/0043; A61M25/0045; A61M2025/0046; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/09133; A61M2025/09175
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
55 words
A guidewire suitable for guiding a catheter within a body lumen, comprising an elongated, flexible metal wire core of a super-elastic alloy having a UP of 75 ksi±10 ksi, an LP of 25 ±7.5 ksi measured at 3% strain and a PS of less than 0.25% where measured in a stress-strain test to 6% strain.
Claim 2
Dependent Claim
55 words
A guidewire suitable for guiding a catheter within a body lumen, comprising an elongated, flexible metal wire core of a super-elastic alloy having a UP of 75 ksi±10 ksi, an LP of 25 ±7.5 ksi measured at 3% strain and a PS of less than 0.25% where measured in a stress-strain test to 6% strain.
Claim 3
Dependent Claim
16 words
The guidewire of claim 1 where the guidewire has a eccentricity ratio of 1±10 -4 .
Claim 4
Dependent Claim
16 words
The guidewire of claim 1 having a distal section, a middle section, and a proximal section.
Claim 5
Dependent Claim
12 words
The guidewire of claim 3 in which the super-elastic alloy is Ni-Ti.
Claim 6
Dependent Claim
15 words
The guidewire of claim 4 in which the distal section is tapered to a point.
Claim 7
Dependent Claim
16 words
The guidewire of claim 5 in which the distal section is coated with a malleable metal.
Claim 8
Dependent Claim
25 words
The guidewire of claim 6 in which the malleable metal is selected from the group consisting of gold, nickel, silver, platinum, palladium and alloys thereof.
Claim 9
Dependent Claim
33 words
The guidewire of claim 6 in which at least a portion of the malleable metal coating on the distal portion is covered by an outer coil comprising platinum, tungsten, or an alloy thereof.
Claim 10
Dependent Claim
21 words
The guidewire of claim 4 in which the distal section comprises a proximal tapered portion and a constant diameter distal portion.
Claim 11
Dependent Claim
16 words
The guidewire of claim 9 in which the distal section is coated with a malleable metal.
Claim 12
Dependent Claim
24 words
The guidewire of claim 10 in which the malleable metal is selected from the group consisting of gold, silver, platinum, palladium and alloys thereof.
Claim 13
Dependent Claim
33 words
The guidewire of claim 11 in which at least a portion of the malleable metal coating on the distal portion is covered by an outer coil comprising platinum, tungsten, or an alloy thereof.
Claim 14
Dependent Claim
15 words
The guidewire of claim 11 wherein an inner coil surrounds the constant diameter distal portion.
Claim 15
Dependent Claim
27 words
The guidewire of claim 13 wherein the inner coil comprises a radiopaque metal selected from the group consisting of platinum, tungsten, and an alloy of the two.
Claim 16
Dependent Claim
23 words
The guidewire of claim 14 wherein a metallic ribbon secures the wire core to the inner coil and further to the outer coil.
Claim 17
Dependent Claim
23 words
The guidewire of claim 4 in which the distal section comprises a necked down portion of smaller diameter than its surrounding distal section.
Claim 18
Dependent Claim
26 words
The guidewire of claim 16 in which at least a portion of the necked down section of the distal portion is covered by an outer coil.
Claim 19
Dependent Claim
29 words
The guidewire of claim 4 in which the outer coil is connected at its distal end by a ribbon joined to the necked down section of the distal portion.
Claim 20
Dependent Claim
25 words
The guidewire of claim 18 in which an inner coil is secured between the ribbon and the necked down section all within the outer coil.
Claim 21
Dependent Claim
20 words
The guidewire of claim 1 in which at least a portion of the guidewire is coated with a polymeric material.
Claim 22
Dependent Claim
64 words
The guidewire of claim 20 where the polymeric material comprises polymers produced from monomers selected from ethylene oxide; 2-vinyl pyridine; N-vinylpyrrolidone; polyethylene glycol acrylates, including mono-methoxy triethylene glycol mono (meth) acrylate, mono-methoxy tetraethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate; other hydrophilic acrylates; acrylic acid and its salts; acrylamide and acrylonitrile; acrylamidomethylpropane sulfonic acid and its salts, cellulose, cellulose derivatives, and polysaccharides.
Claim 23
Dependent Claim
10 words
The guidewire of claim 1 additionally comprising a catheter sheath.
Claim 24
Dependent Claim
90 words
A guidewire suitable for guiding a catheter within a blood vessel, comprising an elongated flexible metal wire core having a distal section, wherein the distal section comprises a necked down portion having a diameter smaller than a section just distal of the necked down portion and wherein an outer coil surrounds at least a portion of the distal section, such portion of the distal section comprising at least the smaller diameter portion and wherein a metallic ribbon secures the outer coil to the smaller diameter portion of the distal section.
Claim 25
Dependent Claim
90 words
A guidewire suitable for guiding a catheter within a blood vessel, comprising an elongated flexible metal wire core having a distal section, wherein the distal section comprises a necked down portion having a diameter smaller than a section just distal of the necked down portion and wherein an outer coil surrounds at least a portion of the distal section, such portion of the distal section comprising at least the smaller diameter portion and wherein a metallic ribbon secures the outer coil to the smaller diameter portion of the distal section.
Claim 26
Dependent Claim
20 words
The guidewire of claim 23 wherein an inner coil is located within the smaller diameter portion of the distal section.
Claim 27
Dependent Claim
29 words
The guidewire of claim 23 wherein the wire core comprises a material selected from the group consisting of high elasticity alloys, stainless steel, platinum, palladium, rhodium and alloys thereof.
Claim 28
Dependent Claim
12 words
The guidewire of claim 25 where the material is a Ni-Ti alloy.
Claim 29
Dependent Claim
27 words
The guidewire of claim 24 wherein the outer coil comprises a radiopaque material selected from the group consisting of platinum, tungsten, and an alloy of the two.
Claim 30
Dependent Claim
27 words
The guidewire of claim 24 wherein the inner coil comprises a radiopaque material selected from the group consisting of platinum, tungsten and an alloy of the two.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |