Patent EP0806220A2 successfully refreshed from Google Patents.
EP0806220A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Composite endovascular guidewire
Assignee: Target Therapeutics Inc
•
Filing: 1997-04-04
•
Granted: —
•
Expires: 2017-04-04
Abstract
Abstract This invention is a surgical device. It is a composite guidewire for use in a catheter and is used for accessing a targeted site in a lumen system of a patient's body. The composite guidewire assembly is especially useful for accessing peripheral or soft tissue targets. The invention includes multi-section guidewire assemblies having (at least) super-elastic distal portions and super-elastic braided reinforcements along the mid or distal sections. A variation of the inventive guidewire includes the coating of the wire with a tie layer and then with a one or more lubricious polymers to enhance its suitability for use within catheters and with the interior of vascular lumen. <IMAGE>
Inventors
- 👤 Joseph Eder
- 👤 Roger Farnholtz
- 👤 Christopher G.M. Ken
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 12:40
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61L; A61L31/00; A61L31/08; A61L31/10; A61L31/02; A61L31/022; A61M25/09; A61L2400/00; A61L2400/16; A61M25/0043; A61M2025/0062; A61M2025/09133; A61M2025/09141; A61M2025/09175
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
89 words
A guidewire for guiding a catheter within a body lumen, comprising an elongated, flexible metal wire core having at least a more-proximal portion having a flexibility and a more-distal super-elastic alloy distal section having a flexibility and wherein the more proximal portion and the more distal section are separated by and joined with a mid section, at least a portion of which mid-section varies in flexibility and which flexibility lies in value between the flexibility of the more-proximal portion and the flexibility of the more-distal super-elastic alloy distal section.
Claim 2
Dependent Claim
34 words
The guidewire of claim 1, wherein the mid-section comprises a conical member formed of an extension of the more distal section within a corresponding socket formed of an extension of the more proximal section.
Claim 3
Dependent Claim
44 words
The guidewire of claim 1, wherein the more-proximal section comprises a metallic tubing member and the mid-section comprises a member having a conical portion formed of an extension of the more-distal section within a corresponding socket formed of an extension of the more-proximal section.
Claim 4
Dependent Claim
21 words
The guidewire of claim 3, wherein the more-proximal section further comprises at least one metallic insert within the metallic tubing member.
Claim 5
Dependent Claim
28 words
The guidewire of claim 1 or 2, wherein the more-proximal section further comprises a metallic tubing member and at least one metallic insert within the metallic tubing member.
Claim 6
Dependent Claim
28 words
The guidewire of claim 1 or 2, wherein the more-proximal section further comprises a metallic tubing member and at least some polymeric material within the metallic tubing member.
Claim 7
Dependent Claim
41 words
The guidewire of claim 1, wherein the mid-section has an axis extending from the more-proximal section to the more-distal section and said mid-section comprises extensions of both said more-proximal section and said more-distal section joined at a bias to the axis.
Claim 8
Dependent Claim
24 words
The guidewire of claim 7, wherein the mid-section further comprises a tubing member about the extensions of the more-proximal section and said more-distal section.
Claim 9
Dependent Claim
18 words
The guidewire of any one of the preceding claims, in which the super-elastic alloy comprises nickel and titanium.
Claim 10
Dependent Claim
14 words
The guidewire of claim 1, where the more-proximal section is a metallic tubing member.
Claim 11
Dependent Claim
21 words
The guidewire of any one of claims 3 to 6 or 10, wherein the metallic tubing member comprises a stainless steel.
Claim 12
Dependent Claim
14 words
The guidewire of claim 1, where the more-proximal section is a polymeric tubing member.
Claim 13
Dependent Claim
14 words
The guidewire of claim 12, where the polymeric tubing more-proximal section comprises a polyimide.
Claim 14
Dependent Claim
16 words
The guidewire of claim 1, where the proximal section comprises a super-elastic alloy ribbon braid member.
Claim 15
Dependent Claim
25 words
The guidewire of any one of the preceding claims, wherein the distal section is at least partially covered with a helically wound ribbon or coil.
Claim 16
Dependent Claim
23 words
The guidewire of claim 15, wherein the helically wound ribbon or coil comprises a metal material selected from super-elastic alloys and radio-opaque alloys.
Claim 17
Dependent Claim
14 words
The guidewire of claim 15, wherein the helically wound ribbon or coil comprises platinum.
Claim 18
Dependent Claim
16 words
The guidewire of claim 16, wherein the helically wound ribbon or coil comprises titanium and nickel.
Claim 19
Dependent Claim
28 words
The guidewire of any one of the preceding claims, further comprising a tie layer situated exterior to at least a portion of the more-distal section or more-proximal section.
Claim 20
Dependent Claim
21 words
The guidewire of claim 19, where the tie layer comprises at least one of NYLON, polyethylene, polystyrene, polyurethane, and polyethylene terephthalate.
Claim 21
Dependent Claim
14 words
The guidewire of claim 19, where the tie layer comprises polyethylene terephthalate or polyurethane.
Claim 22
Dependent Claim
17 words
The guidewire of claim 21, wherein the tie layer is polyurethane and has a variable hardness distally.
Claim 23
Dependent Claim
26 words
The guidewire of claim 19, 20, 21 or 22, in which at least a portion of the tie layer is coated with a lubricious polymeric material.
Claim 24
Dependent Claim
16 words
The guidewire of claim 23, in which lubricious polymeric material comprises at least one hydrophilic polymer.
Claim 25
Dependent Claim
30 words
The guidewire of any one of claims 19 to 24, where the tie layer additionally comprises a radio-opaque material selected from barium sulphate, bismuth trioxide, bismuth carbonate, tungsten, and tantalum.
Claim 26
Dependent Claim
14 words
The guidewire of any one of the preceding claims, additionally comprising a catheter sheath.
Claim 27
Dependent Claim
59 words
A guidewire for guiding a catheter within a body lumen, comprising an elongated, flexible metal wire core having at least a more-distal super-elastic alloy distal section and a metallic, tubular, more-proximal section and wherein at least the distal portion of the more proximal section comprises an extension of the more-distal super-elastic alloy distal section within the tubular more-proximal section.
Claim 28
Dependent Claim
22 words
The guidewire of claim 27, wherein the more proximal section is swaged to the extension of the more-distal super-elastic alloy distal section
Claim 29
Dependent Claim
38 words
The guidewire of claim 27, wherein the more proximal section is joined to the extension of the more-distal super-elastic alloy distal section by pulling the at least the distal portion of the more proximal section through a die.
Claim 30
Dependent Claim
26 words
The guidewire of claim 27, wherein the more-proximal section further comprises a metallic tubing member and at least one metallic insert within the metallic tubing member.
Claim 31
Dependent Claim
26 words
The guidewire of claim 27, wherein the more-proximal section further comprises a metallic tubing member and at least some polymeric material within the metallic tubing member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.