US5827201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro-braided guidewire
Assignee: Target Therapeutics Inc
•
Filing: 1996-07-26
•
Granted: 1998-10-27
•
Expires: 2016-07-26
Abstract
Abstract This is a composite guidewire for use in a catheter. It is used in medical procedures that involve accessing specifically targeted inner body areas without major surgery. The composite guidewire is especially useful for accessing peripheral soft tissue targets. The guidewire may be a multi-section guidewire assembly preferably having super-elastic alloy ribbon braided reinforcements along at least a portion of the core. The guidewire core may be of a stainless steel or a high elasticity metal alloy, preferably a Ni--Ti alloy. A variation of the guidewire also preferably includes a braid on the exterior of the core wire with an exterior polymeric coating to the most distal portion of the assembly and preferably assembled using adhesives such as epoxies.
Inventors
- 👤 Gene Samson
- 👤 Kim Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/09133; A61M2025/09141; A61M2025/09175
Claims Analysis
Total Claims: 68
Claim 1
Independent Claim
99 words
A guidewire suitable for guiding a catheter within a body lumen, comprising: a) an elongated flexible wire core having a proximal section, a middle section, a distal end section, b) a coil covering at least a portion of said distal end section and bonded to said end section distally with an adhesive, c) a tubular super-elastic alloy braid covering at least a portion of said middle section and bonded to said wire core in at least two locations with an adhesive, and d) a polymeric layer covering extending at least over said middle section and said distal end section.
Claim 2
Dependent Claim
99 words
A guidewire suitable for guiding a catheter within a body lumen, comprising: a) an elongated flexible wire core having a proximal section, a middle section, a distal end section, b) a coil covering at least a portion of said distal end section and bonded to said end section distally with an adhesive, c) a tubular super-elastic alloy braid covering at least a portion of said middle section and bonded to said wire core in at least two locations with an adhesive, and d) a polymeric layer covering extending at least over said middle section and said distal end section.
Claim 3
Dependent Claim
12 words
The guidewire of claim 1 wherein the core comprises a super-elastic alloy.
Claim 4
Dependent Claim
15 words
The guidewire of claim 2 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 5
Dependent Claim
12 words
The guidewire of claim 1 wherein the core comprises a stainless steel.
Claim 6
Dependent Claim
15 words
The guidewire of claim 1 wherein at least the middle section comprises a super-elastic alloy.
Claim 7
Dependent Claim
15 words
The guidewire of claim 5 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 8
Dependent Claim
15 words
The guidewire of claim 1 wherein at least the middle section comprises a stainless steel.
Claim 9
Dependent Claim
16 words
The guidewire of claim 1 wherein at least the distal end section comprises a super-elastic alloy.
Claim 10
Dependent Claim
15 words
The guidewire of claim 8 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 11
Dependent Claim
16 words
The guidewire of claim 1 wherein at least the distal end section comprises a stainless steel.
Claim 12
Dependent Claim
12 words
The guidewire of claim 1 wherein the coil comprises a super-elastic alloy.
Claim 13
Dependent Claim
13 words
The guidewire of claim 11 wherein the super-elastic alloy comprises nickel and titanium.
Claim 14
Dependent Claim
12 words
The guidewire of claim 1 wherein the coil comprises a stainless steel.
Claim 15
Dependent Claim
16 words
The guidewire of claim 1 wherein the super-elastic tubular braid comprises a nickel and titanium alloy.
Claim 16
Dependent Claim
11 words
The guidewire of claim 1 wherein the adhesive comprises an epoxy.
Claim 17
Dependent Claim
18 words
The guidewire of claim 15 wherein the epoxy comprises a high-temperature bis-A epichlorohydrin epoxide resin and polyamine-polyamide hardener.
Claim 18
Dependent Claim
21 words
The guidewire of claim 1 wherein the polymeric layer comprises at least one of NYLON, polyethylene, polystyrene, polyurethane, and polyethylene terephthalate.
Claim 19
Dependent Claim
13 words
The guidewire of claim 17 wherein the layer comprises polyethylene terephthalate or polyurethane.
Claim 20
Dependent Claim
10 words
The guidewire of claim 18 wherein the layer is polyurethane.
Claim 21
Dependent Claim
20 words
The guidewire of claim 17 wherein at least a portion of the polymeric layer is coated w/a lubricious polymeric material.
Claim 22
Dependent Claim
16 words
The guidewire of claim 20 wherein the lubricious polymeric material comprises at least one hydrophilic polymer.
Claim 23
Dependent Claim
25 words
The guidewire of claim 17 wherein the polymeric layer additionally comprises a radio-opaque material selected from barium sulfate, bismuth trioxide, bismuth carbonate, tungsten, and tantalum.
Claim 24
Dependent Claim
16 words
The guidewire of claim 1 wherein the guidewire additionally comprises an atraumatic distal tip comprising epoxy.
Claim 25
Dependent Claim
10 words
The guidewire of claim 1 additionally comprising a catheter sheath.
Claim 26
Dependent Claim
98 words
A guidewire suitable for guiding a catheter within a body lumen comprising: a) an elongated flexible wire core having a proximal section, a middle section, a distal end section, b) a coil covering at least a portion of said distal end section and bonded to said end section distally with an adhesive, c) a tubular super-elastic alloy braid covering at least a portion of said middle section and fastened to said wire core by incomplete interfacial bonding with an adhesive, and d) a polymeric layer covering extending at least over said middle section and said distal end section.
Claim 27
Dependent Claim
98 words
A guidewire suitable for guiding a catheter within a body lumen comprising: a) an elongated flexible wire core having a proximal section, a middle section, a distal end section, b) a coil covering at least a portion of said distal end section and bonded to said end section distally with an adhesive, c) a tubular super-elastic alloy braid covering at least a portion of said middle section and fastened to said wire core by incomplete interfacial bonding with an adhesive, and d) a polymeric layer covering extending at least over said middle section and said distal end section.
Claim 28
Dependent Claim
12 words
The guidewire of claim 25 wherein the core comprises a super-elastic alloy.
Claim 29
Dependent Claim
15 words
The guidewire of claim 26 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 30
Dependent Claim
12 words
The guidewire of claim 25 wherein the core comprises a stainless steel.
Claim 31
Dependent Claim
15 words
The guidewire of claim 25 wherein at least the middle section comprises a super-elastic alloy.
Claim 32
Dependent Claim
15 words
The guidewire of claim 29 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 33
Dependent Claim
15 words
The guidewire of claim 25 wherein at least the middle section comprises a stainless steel.
Claim 34
Dependent Claim
16 words
The guidewire of claim 25 wherein at least the distal end section comprises a super-elastic alloy.
Claim 35
Dependent Claim
15 words
The guidewire of claim 32 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 36
Dependent Claim
16 words
The guidewire of claim 25 wherein at least the distal end section comprises a stainless steel.
Claim 37
Dependent Claim
12 words
The guidewire of claim 25 wherein the coil comprises a super-elastic alloy.
Claim 38
Dependent Claim
13 words
The guidewire of claim 35 wherein the super-elastic alloy comprises nickel and titanium.
Claim 39
Dependent Claim
12 words
The guidewire of claim 25 wherein the coil comprises a stainless steel.
Claim 40
Dependent Claim
16 words
The guidewire of claim 25 wherein the super-elastic tubular braid comprises a nickel and titanium alloy.
Claim 41
Dependent Claim
11 words
The guidewire of claim 25 wherein the adhesive comprises an epoxy.
Claim 42
Dependent Claim
18 words
The guidewire of claim 39 wherein the epoxy comprises a high-temperature bis-A epichlorohydrin epoxide resin and polyamine-polyamide hardener.
Claim 43
Dependent Claim
21 words
The guidewire of claim 25 wherein the polymeric layer comprises at least one of NYLON, polyethylene, polystyrene, polyurethane, and polyethylene terephthalate.
Claim 44
Dependent Claim
13 words
The guidewire of claim 41 wherein the layer comprises polyethylene terephthalate or polyurethane.
Claim 45
Dependent Claim
10 words
The guidewire of claim 42 wherein the layer is polyurethane.
Claim 46
Dependent Claim
20 words
The guidewire of claim 41 wherein at least a portion of the polymeric layer is coated w/a lubricious polymeric material.
Claim 47
Dependent Claim
16 words
The guidewire of claim 44 wherein the lubricious polymeric material comprises at least one hydrophilic polymer.
Claim 48
Dependent Claim
25 words
The guidewire of claim 41 wherein the polymeric layer additionally comprises a radio-opaque material selected from barium sulfate, bismuth trioxide, bismuth carbonate, tungsten, and tantalum.
Claim 49
Dependent Claim
16 words
The guidewire of claim 25 wherein the guidewire additionally comprises an atraumatic distal tip comprising epoxy.
Claim 50
Dependent Claim
10 words
The guidewire of claim 25 additionally comprising a catheter sheath.
Claim 51
Dependent Claim
61 words
A guidewire suitable for guiding a catheter within a body lumen, comprising: a) an elongated flexible wire core, b) a tubular super-elastic alloy braid covering at least a portion of said wire core and fastened to said wire core by incomplete interfacial bonding with an adhesive, and c) a polymeric layer covering extending at least over said tubular super-elastic alloy braid.
Claim 52
Dependent Claim
61 words
A guidewire suitable for guiding a catheter within a body lumen, comprising: a) an elongated flexible wire core, b) a tubular super-elastic alloy braid covering at least a portion of said wire core and fastened to said wire core by incomplete interfacial bonding with an adhesive, and c) a polymeric layer covering extending at least over said tubular super-elastic alloy braid.
Claim 53
Dependent Claim
12 words
The guidewire of claim 49 wherein the core comprises a super-elastic alloy.
Claim 54
Dependent Claim
15 words
The guidewire of claim 50 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 55
Dependent Claim
12 words
The guidewire of claim 49 wherein the core comprises a stainless steel.
Claim 56
Dependent Claim
16 words
The guidewire of claim 49 wherein the super-elastic tubular braid comprises a nickel and titanium alloy.
Claim 57
Dependent Claim
11 words
The guidewire of claim 49 wherein the adhesive comprises an epoxy.
Claim 58
Dependent Claim
18 words
The guidewire of claim 54 wherein the epoxy comprises a high-temperature bis-A epichlorohydrin epoxide resin and polyamine-polyamide hardener.
Claim 59
Dependent Claim
21 words
The guidewire of claim 49 wherein the polymeric layer comprises at least one of NYLON, polyethylene, polystyrene, polyurethane, and polyethylene terephthalate.
Claim 60
Dependent Claim
13 words
The guidewire of claim 56 wherein the layer comprises polyethylene terephthalate or polyurethane.
Claim 61
Dependent Claim
10 words
The guidewire of claim 57 wherein the layer is polyurethane.
Claim 62
Dependent Claim
25 words
The guidewire of claim 56 wherein the polymeric layer additionally comprises a radio-opaque material selected from barium sulfate, bismuth trioxide, bismuth carbonate, tungsten, and tantalum.
Claim 63
Dependent Claim
20 words
The guidewire of claim 49 wherein at least a portion of the polymeric layer is coated w/a lubricious polymeric material.
Claim 64
Dependent Claim
16 words
The guidewire of claim 60 wherein the lubricious polymeric material comprises at least one hydrophilic polymer.
Claim 65
Dependent Claim
10 words
The guidewire of claim 49 additionally comprising a catheter sheath.
Claim 66
Dependent Claim
19 words
The guidewire of claim 49 wherein the core comprises a composite of a stainless steel and a super-elastic alloy.
Claim 67
Dependent Claim
15 words
The guidewire of claim 63 wherein the super-elastic alloy comprises a nickel and titanium alloy.
Claim 68
Dependent Claim
17 words
The guidewire of claim 49 wherein the guidewire additionally comprises an atraumatic distal tip comprising an epoxy.
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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) | 2001-10-26 | 2002-04-27 | 2002-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-26 | 2006-04-27 | 2006-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-26 | 2010-04-27 | 2010-10-27 | $7700.00 | Window Closed / Lapsed |