EP0838230A2
Expired / Lapsed
EP
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Guide wire
Assignee: Terumo Corp
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Filing: 1997-10-22
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Granted: —
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Expires: 2017-10-22
Abstract
Abstract The guide wire (1) comprises a first wire (A) located on the distal side and having an appropriate elasticity, a second wire (B) located on the proximal side and having a flexural rigidity greater than that of said first wire and a tubular connector (12) for joining the first and second wires (A,B). The connector has grooves or slits formed in its portion on the distal side of a boundary (124) between the first wire A and the second wire B.
Inventors
- 👤 Syunichi Uchino
- 👤 Kenichi Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 05:23
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/0905; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/0915
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
88 words
A guide wire, comprising a first wire which is located on
a distal side and has an appropriate elasticity, a second wire
which is located on a proximal side and has a flexural rigidity
greater than that of said first wire, and a tubular connector
for joining said first and second wires, and characterized in
that said connector has one or more grooves or slits or both
of them formed in its portion on the distal side of a boundary
between said first wire and said second wire.
Claim 2
Dependent Claim
33 words
The guide wire of claim 1 wherein the flexural rigidity
of and around the proximal end portion of said first wire
connected to said connector changes smoothly along the
direction of the length.
Claim 3
Dependent Claim
39 words
The guide wire of claim 1 wherein the flexural rigidity
of the portion of the connector on the distal side of the
boundary between said first wire and said second wire changes
smoothly along the direction of the length.
Claim 4
Dependent Claim
43 words
The guide wire of any one of claims 1 to 3 wherein the
density of said one or more grooves or slits formed in the first
wire-receiving portion of said tubular connector becomes
larger toward the distal side end of said tubular connector.
Claim 5
Dependent Claim
38 words
The guide wire of any one of claims 1 to 4 wherein said
second wire is formed of a metal, and said connector is formed
of the same or the same kind of material as said second wire.
Claim 6
Dependent Claim
27 words
The guide wire of claim 5 wherein said first wire is formed
of a super elastic metal and said second wire is made of a
stainless steel.
Claim 7
Dependent Claim
29 words
The guide wire of any one of claims 1 to 6 wherein said
first wire and said connector, and said second wire and said
connector are joined by welding.
Claim 8
Dependent Claim
37 words
The guide wire of any one of claims 1 to 7 wherein the
abutting end surfaces of said first and second wires are oblique
to a plane perpendicular to the axes of said first and second
wires.
Claim 9
Dependent Claim
77 words
The guide wire of any one of claims 1 to 8 wherein said
second wire is made of a metal whose rigidity is greater than
that of the first wire and said connector is made of the
same or same kind of material as said second wire, and
the rigidity of the guide wire is made to increase smoothly from
the proximal end portion of said first wire to the distal end
portion of said second wire.
Claim 10
Dependent Claim
116 words
A guide wire comprising a first wire which is located on
the distal side and has an appropriate elasticity, a second wire
which is located on the proximal side and has a flexural
rigidity greater than that of said first wire, and a tubular
connector for joining said first and second wires, and
characterized in that said connector is formed of a material
different from a material of said first wire, that a proximal
portion of said first wire joined to said connector is provided
with a thin metal coating as an adjuvant to joining, and that
said first wire is joined to said connector by the portion
provided with the thin metal coating by brazing.
Claim 11
Dependent Claim
41 words
The guide wire of claim 10 wherein said first wire is
formed of a super elastic metal and said thin metal coating is
formed of Ni, Ag, Au, Sn or Pd, or an alloy of two or more of
these metals.
Claim 12
Dependent Claim
17 words
The guide wire of claim 10 or 11 wherein said connector
is formed of a stainless steel.
Claim 13
Dependent Claim
28 words
The guide wire of any one of claims 10 to 12 wherein said
connector and said second wire are formed of a stainless steel
and joined by welding.
Claim 14
Dependent Claim
37 words
The guide wire of any one of claims 10 to 13 wherein the
abutting end surfaces of said first and second wires are oblique
to a plane perpendicular to the axes of said first and second
wires.
Claim 15
Dependent Claim
24 words
The guide wire of any one of claims 10 to 14 wherein a slit
are formed in the proximal end portion of said connector.
Claim 16
Dependent Claim
15 words
The guide wire of claim 15 wherein said slit is formed of
a helical slit.
Claim 17
Dependent Claim
29 words
The guide wire of claim 15 or 16 wherein at least a distal
end portion of said slit-formed portion of said connector is
not joined to said first wire.
Claim 18
Dependent Claim
41 words
The guide wire of claim 16 or 17 wherein the flexural
rigidity of the portion of the connector on the distal side of
the boundary between said first wire and said second wire
changes smoothly along the direction of the length.
Claim 19
Dependent Claim
77 words
The guide wire of any one of claims 16 to 18 wherein said
second wire is made of a metal whose rigidity is greater than
that of the first wire and said connector is made of the
same or same kind of material as said second wire, and
the rigidity of the guide wire is made to increase smoothly from
the proximal end portion of said first wire to the distal end
portion of said second wire.
References Cited (Backward Citations)
No citation records indexed.
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