EP0014424A1
Expired / Lapsed
EP
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Medical vascular guide wire and self-guiding type catheter
Assignee: Toray Monofilament Co Ltd
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Filing: 1980-01-29
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Granted: —
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Expires: 2000-01-29
Abstract
Abstract Disclosed is a medical vascular guide wire made of a synthetic resin hollow monofilament. The guide wire comprises a tip part, a flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously forming a line, in that order, along the monofilament axis. At least the tip part and the manipulating part have X-ray impermeable material inserted in the respective hollows thereof. Disclosed is also a self-guiding type catheter made of a synthetic resin multi-hollow monofilament. The catheter comprises a tip part, a flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously formed a line, in that order, along the monofilament axis. The catheter has at least two hollows extending at least from one end of the manipulating part to the tapering part or to the other end of the manipulating part or to a point in close proximity to said other end ofthe manipulating part. At least one of the hollows has an X-ray impermeable material inserted at least within the hollow in the manipulating part, and the other hollow or at least one of the other hollows forms a passageway for a liquid and/or a gas.
Inventors
- 👤 Hidenaga Yoshimura
- 👤 Kunio Yamada
- 👤 Hironori Yamada
- 👤 Ryusaku Yamada
- 👤 Hiroaki Kudo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 16:09
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0125; A61M25/0108; A61M25/09; A61M25/09016; A61M25/09033; A61M2025/09058; A61M2025/09066
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A medical vascular guide wire comprising a wire body made of a synthetic resin hollow monofilament and comprised of a tip part, a relatively flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously forming in line, .in that order, along the monofilament axis, and; at least the tip part and the manipulating part having X-ray impermeable material inserted in the respective hollows thereof.
Claim 2
Dependent Claim
75 words
A medical vascular guide wire comprising a wire body made of a synthetic resin hollow monofilament and comprised of a tip part, a relatively flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously forming in line, .in that order, along the monofilament axis, and; at least the tip part and the manipulating part having X-ray impermeable material inserted in the respective hollows thereof.
Claim 3
Dependent Claim
72 words
A medical vascular guide wire according to claim 1, wherein an X-ray impermeable material in the form of a metal wire, one end portion of which is tapered, is inserted in the hollow of the manipulating part or in the hollow extending from the tapered part to the manipulating part, in a manner such that the tapered end of the metal wire is directed to the tip part of the wire body.
Claim 4
Dependent Claim
35 words
A medical vascular guide wire according to claim 1 or 2, wherein the hollow monofilament is made of at least one melt-extrudable thermoplastic synthetic resin selected from the group consisting of polyesters, polyamides and polyolefins.
Claim 5
Dependent Claim
66 words
A medical vascular guide wire according to claim 1 or 2, wherein the hollow monofilament is made of a polyblend comprised of; based on the total weight of the polyblend, (i) 70 to 99% by weight of at least one melt-extrudable thermoplastic synthetic resin selected from the group consisting of polyesters, polyamides and polyolefins and (ii) 1 to 30% by weight of a fluorine-containing thermoplastic resin.
Claim 6
Dependent Claim
50 words
A medical vascular guide wire according to any one of claims 1 through 4, wherein the wire body has been surface-treated by (i) a silicone coating treatment, (ii) a fluorine-containing resin coating treatment, or (iii) a plasma spark discharge treatment effected in an atmosphere of a gaseons organic fluorine-containing compound.
Claim 7
Dependent Claim
23 words
A medical vascular guide wire according to claim 1 or 2, wherein the hollow monofilament is made of a melt-extrudable fluorine-containing thermoplastic resin.
Claim 8
Dependent Claim
76 words
A medical vascular guide wire according to any one of claims 1 through 6, wherein the respective parts of the wire body have the dimensions: tip part: maximum diameter is about 0.5-3 mm and length is about 0.5-5 mm; relatively flexible part: diameter is about 0.1-0.5 mm and length is about 10-100 mm; tapered part: length is about 10-100 mm, and; manipulating part: diameter is about 0.5-3 mm and length is at least about 200 mm.
Claim 9
Dependent Claim
212 words
A self-guiding type catheter comprising a continuously extending body made of a synthetic resin, multi-hollow monofilament and comprised of a tip part, a relatively flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously formed in line, in that order, along the monofilament axis; said body having at least two hollows extending at least from one end of the manipulating part to the tapering part or to the other end of the manipulating part or to a point in close proximity to said other end of the manipulating part, at least one of said hollows having an X-ray impermeable material inserted at least within the hollow in the manipulating part, and the other hollow or at least one of the other hollows forming a lumen for permitting a liquid and/or a gas to pass therethrough, which lumen is opened to the outside of the body through an inlet opening at the distal end of the lumen and through an outlet opening bored in the part or in the adjacent portion thereto of the manipulating part, and; said body further having at least two hollows in the tip part, at least one of said hollows having an X-ray impermeable material inserted therein.
Claim 10
Dependent Claim
212 words
A self-guiding type catheter comprising a continuously extending body made of a synthetic resin, multi-hollow monofilament and comprised of a tip part, a relatively flexible part having a smaller diameter than the other parts, a tapering part and a manipulating part, these four parts continuously formed in line, in that order, along the monofilament axis; said body having at least two hollows extending at least from one end of the manipulating part to the tapering part or to the other end of the manipulating part or to a point in close proximity to said other end of the manipulating part, at least one of said hollows having an X-ray impermeable material inserted at least within the hollow in the manipulating part, and the other hollow or at least one of the other hollows forming a lumen for permitting a liquid and/or a gas to pass therethrough, which lumen is opened to the outside of the body through an inlet opening at the distal end of the lumen and through an outlet opening bored in the part or in the adjacent portion thereto of the manipulating part, and; said body further having at least two hollows in the tip part, at least one of said hollows having an X-ray impermeable material inserted therein.
Claim 11
Dependent Claim
66 words
A self-guiding type catheter according to claim 8, wherein said X-ray impermeable material inserted at least within the hollow in the manipulating part is in the form of a metal wire, one end portion of which is tapered and inserted in the hollow in a manner such that the tapered end of the metal wire is directed toward to the tip part of the wire body.
Claim 12
Dependent Claim
34 words
A self-guiding type catheter according to claim 8 or 9, wherein the multi-hollow monofilament is made of at least one melt-extrudable thermoplastic synthetic resin selected from the group consisting of polyesters, polyamides and polyolefins.
Claim 13
Dependent Claim
65 words
A self-guiding type catheter according to claim 8 or 9, wherein the multi-hollow monofilament is made of a polyblend comprised of, based on the total weight of the polyblend, (i) 70 to 99% by weight of at least one melt-extrudable thermoplastic synthetic resin selected from the group consisting of polyesters, polyamides and polyolefins and (ii) 1 to 30% by weight of a fluorine-containing thermoplastic resin.
Claim 14
Dependent Claim
49 words
A self-guiding type catheter according to any one of claims 8 through 11, wherein the catheter body has been surface-treated by (i) a silicone coating treatment, (ii) a fluorine-containing resin coating treatment, or (iii) a plasma spark discharge treatment effected in an atmosphere of a gaseous organic fluorine-containing compound.
Claim 15
Dependent Claim
22 words
A self-guiding type catheter according to claim 8 or 9, wherein the multi-hollow monofilament is made of a melt-extrudable fluorine-containing thermoplastic resin.
Claim 16
Dependent Claim
67 words
A self-guiding type catheter according to any one of claims 8 through 13, wherein the respective parts of the body have the dimensions: tip part: miximum diameter is about 0.53 mm and length is about 0.5-5 mm; relatively flexible part: diameter is about 0.1-0.5 mm and length is about 10-100 mm; and; manipulating part: diameter is about 0.7-3 mm and length is at least about 200 mm.
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