EP0826389A2
Expired / Lapsed
EP
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Guide wire
Assignee: Asahi Intecc Co Ltd
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Filing: 1997-08-28
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Granted: —
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Expires: 2017-08-28
Abstract
Abstract In a guide wire (1) for a catheter, a core wire (2) prepared by twisting a plurality of thin threads (21,22,23) in which a leading end of the core wire being diametrically reduced to be a thinnest tip (25). A resin layer (3) is coated on an outer surface of the core wire (2). The thinnest tip (25) is treated by tightly uniting together a twisted ends of the thinnest threads. <IMAGE>
Inventors
- 👤 Naohiko Miyata
- 👤 Masashi Momota
- 👤 Minoru Saruta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09075; A61M2025/09191
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A guide wire (1,5) comprising: a core wire (2) comprising a plurality of thin threads
(21,22,23) twisted together, a leading end of the core wire (2)
being diametrically reduced to form a thin tip (25); and a resin layer (3) coating an outer surface of the core
wire (2), wherein the twisted ends of the threads of the thin tip
(25) are tightly united together.
Claim 2
Dependent Claim
34 words
A guide wire according to claim 1, wherein the thin tip
(25) of the leading end of the core wire comprises a flat
portion (28) which is flattened or squelched into a flat-shaped
configuration.
Claim 3
Dependent Claim
29 words
A guide wire according to claim 2, wherein a thickness of
the flat portion progressively reduces in one or more steps
approaching the leading end of the guide wire.
Claim 4
Dependent Claim
57 words
A guide wire according to claim 2, wherein the flat
portion has a leading end, flat, side section (26) and a base,
flat, side section (27), and the flat portion is bent in a
zigzag manner so that the base, flat, side section (27) is at a
higher level than the leading end flat, side section (26).
Claim 5
Dependent Claim
25 words
A guide wire according to claim 3 or 4, wherein a
thickness of a topmost end of the flat portion is 0.095 mm or
more.
Claim 6
Dependent Claim
28 words
A guide wire according to any one of the preceding claims,
wherein a diameter of the thin tip is in the range from 0.10 mm
to 0.30 mm.
Claim 7
Dependent Claim
14 words
A catheter including a guide wire according to any one of
the preceding claims.
Claim 8
Independent Claim
75 words
A method of making a guide wire (1,5), the method
comprising: preparing a core wire (2) by twisting together a plurality
of thin threads (21,22,23); diametrically reducing the leading end of the core wire
(2) to form a thin tip (25); coating an outer surface of the core wire (2) with a resin
layer (3); and treating the thin tip (25) to tightly bond together the
twisted ends of the threads of the thin tip.
Claim 9
Dependent Claim
26 words
A method according to claim 8, wherein the thin tip is
treated by one of: applying an adhesive; soldering; resistance
welding; laser welding; or shield-arc welding.
Claim 10
Dependent Claim
27 words
A method according to claim 8 to 9, further comprising
flattening or squelching the leading end of the thin tip (25)
to form a flat portion (28).
References Cited (Backward Citations)
No citation records indexed.
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