EP0519604A2
Expired / Lapsed
EP
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Intravascular guide wire and method of manufacture thereof
Assignee: Boston Scientific Scimed Inc
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Filing: 1992-05-20
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Granted: —
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Expires: 2012-05-20
Abstract
Abstract A guide wire, has a core (18) and a plastic jacket (38) enclosing the core. The plastic jacket comprises a proximal portion (40) formed of a first plastic material and a distal jacket portion (42) formed of a second plastic material. The distal end of the proximal jacket portion and the proximal end of the distal jacket portion substantially abut each other and are of substantially equal outer diameters so as to form a smooth transition between the proximal and the distal jacket portions. According to another aspect, there is provided a guide wire with a selectively formable metallic core and a plastic jacket encasing the formable core. The plastic jacket has a distal portion with a hydrophilic coating and a proximal portion without a hydrophilic coating. According to another aspect, there is provided a guide wire having a formable metallic core and a plastic jacket encasing the formable core. The plastic jacket has a distal portion that is more radiopaque than a proximal portion.
Inventors
- 👤 Paul H. Burmeister
- 👤 Steven S. Hackett
- 👤 Richard E. Cappetta
- 👤 Paul Slaikeu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/09133; A61M2025/09175; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
81 words
A guide wire comprising: a core (18), and a plastic jacket (38) enclosing said core, said plastic jacket comprising: a proximal jacket portion (40) formed of a first plastic material, and a distal jacket portion (42) formed of a second plastic material, the distal end of said proximal jacket portion and the proximal end of said distal jacket portion being substantially of equal outer diameters so as to form a substantially smooth transition between said proximal and said distal jacket portions.
Claim 2
Dependent Claim
17 words
A guide wire as claimed in claim 1 wherein said distal jacket portion is made of polyurethane.
Claim 3
Dependent Claim
20 words
A guide wire as claimed in claim 1 or claim 2 wherein said proximal jacket portion is made of Teflon.
Claim 4
Dependent Claim
20 words
A guide wire as claimed in any one of the preceding claims wherein said distal jacket portion has radiopaque properties.
Claim 5
Dependent Claim
24 words
A guide wire as claimed in claim 4 wherein said distal jacket portion is loaded with a material selected from bismuth, barium, and tungsten.
Claim 6
Dependent Claim
29 words
A guide wire as claimed in any one of the preceding claims comprising a marker (56) located around a distal end (58) of said core beneath said plastic jacket.
Claim 7
Dependent Claim
14 words
A guide wire as claimed in claim 6 wherein said marker is substantially radiopaque.
Claim 8
Dependent Claim
21 words
A guide wire as claimed in any one of the preceding claims wherein said distal jacket portion has a hydrophilic coating.
Claim 9
Dependent Claim
19 words
A guide wire as claimed in claim 8 wherein the proximal jacket portion does not have a hydrophilic coating.
Claim 10
Dependent Claim
23 words
A guide wire as claimed in any one of the preceding claims wherein said core is formable in at least a portion thereof.
Claim 11
Dependent Claim
16 words
A guide wire as claimed in claim 10 wherein said core is made of stainless steel.
Claim 12
Dependent Claim
29 words
A guide wire as claimed in claim 10 or claim 11 in which the core is formable in a distal portion thereof and non-formable in a proximal portion thereof.
Claim 13
Dependent Claim
40 words
A guide wire comprising: a metallic core formable in at least a portion thereof, and a plastic jacket encasing said core, said plastic jacket having a distal portion with a hydrophilic coating and a proximal portion without a hydrophilic coating.
Claim 14
Dependent Claim
16 words
A guide wire as claimed in claim 13 wherein said core is made of stainless steel.
Claim 15
Dependent Claim
21 words
A guide wire as claimed in claim 13 or claim 14 wherein said core is tapered at a distal end thereof.
Claim 16
Dependent Claim
31 words
A guide wire as claimed in any one of claims 13 to 15, in which the core is formable in a distal portion thereof and non-formable in a proximal portion thereof.
Claim 17
Dependent Claim
16 words
A guide wire as claimed in claim 16 in which the core is made of nitinol.
Claim 18
Dependent Claim
42 words
A guide wire comprising: a metallic core formable in at least a portion thereof, and a plastic jacket encasing said core, said plastic jacket having a distal portion and a proximal portion, said distal portion being more radiopaque than said proximal portion.
Claim 19
Dependent Claim
23 words
A guide wire as claimed in claim 18 wherein said distal portion is loaded with a material selected from bismuth, barium, and tungsten.
Claim 20
Dependent Claim
27 words
A guide wire as claimed in claim 18 or claim 19 further comprising a marker located at a distal end of said core beneath said plastic jacket.
Claim 21
Dependent Claim
14 words
A guide wire as claimed in claim 20 wherein said marker is substantially radiopaque.
Claim 22
Dependent Claim
19 words
A guide wire comprising: a core formable in a distal portion thereof and non-formable in a proximal portion thereof.
Claim 23
Dependent Claim
15 words
A guide wire as claimed in claim 22 wherein said core is made of nitinol.
Claim 24
Independent Claim
49 words
A method for making a guide wire comprising the steps of: heat shrinking a proximal jacket of Teflon onto a proximal end of a core wire; and heating a jacket of polyurethane to a temperature until it is reformed around and encases a distal portion of the core wire.
Claim 25
Dependent Claim
34 words
A method as claimed in claim 24 including the step of: finishing the outside surfaces of the jackets of Teflon and polyurethane by centerless grinding so that the transition between the jackets is smooth.
Claim 26
Independent Claim
31 words
A method for making a guide wire comprising the steps of: providing a superelastic core wire; and treating the core wire in a portion thereof to provide the property of formability.
Claim 27
Dependent Claim
49 words
A method as claimed in claim 26 further comprising: encasing the core wire in a plastic jacket so that the formable portion of said core wire corresponds to a distal end of the guide wire and the superelastic portion thereof corresponds to a proximal end of the guide wire.
References Cited (Backward Citations)
No citation records indexed.
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