EP0692276A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter tube and a method of processing the inner surface of a tube
Assignee: Terumo Corp
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Filing: 1995-07-07
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Granted: —
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Expires: 2015-07-07
Abstract
Abstract Catheter tube 2 has a multiple of small bead-like projections 21 formed on the inner surface. The inner surface of the tube 2 comprises projections 21 and flat areas 22. A guide wire inserted into the lumen 5 of the tube 2 contacts its inner surface only at the projections 21. The catheter tube 2 has the inner surface embossed in such a way that the guide wire can be manipulated with high efficiency even if the diameter of the tube is very small.
Inventors
- 👤 Toshinobu C/O Terumo K.K. Ishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
B; B29; B29C; B29C41/00; A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0021; A61M25/0023; B29C41/34; B29C41/38; B29C41/386; A61M25/0043; A61M25/0045; A61M2025/0046; A61M2025/0047; A61M2025/0062; B29K; B29K2995/00; B29K2995/0037; B29K2995/0094; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A catheter tube having a multiple of small projections formed on the inner surface, said inner surface consisting of small bead-like projections and generally flat areas other than said projections, and said projections and said generally flat areas being formed of the same material in a unitary assembly.
Claim 2
Dependent Claim
21 words
A catheter tube according to claim 1, which is a medical tube having an inside diameter of 1 mm or less.
Claim 3
Dependent Claim
67 words
A catheter tube according to claim 1, wherein said small bead-like projections are generally rectangles having an average size 0.1 - 0.8 mm in length and 0.03 - 0.3 mm in width or ellipses having an average diameter of 0.05 - 0.4 mm, the average distance between projections is 5 mm or less than 5 mm, and the average height of projections is 0.002 - 0.03 mm.
Claim 4
Dependent Claim
38 words
A catheter tube according to claim 1, wherein the total area of said bead-like projections is 0.01 - 0.2 cm²/cm² and the total area of said generally flat areas is 0.8 - 0.99 cm²/cm² on said inner surface.
Claim 5
Dependent Claim
45 words
A catheter tube according to claim 1, wherein the average number of said bead-like projections is 50 - 1000/cm², the average distance between the projections is 5 mm or less than 5 mm, and the average height of the projections is 0.002 - 0.03 mm.
Claim 6
Independent Claim
52 words
A method of processing the inner surface of a tube to form a multiple of small projections on the inner surface, in which a metal core that has been embossed to form a multiple of small recesses in the outer surface is coated with a molded synthetic resin material and subsequently extracted.
Claim 7
Dependent Claim
14 words
A method according to claim 6, wherein said metal core is a copper wire.
Claim 8
Dependent Claim
24 words
A method according to claim 6, wherein said core metal is knurled to have a multiple of small recesses formed in the outer surface.
Claim 9
Dependent Claim
28 words
A catheter tube according to claim 1, wherein said small bead-like projections are long narrow pieces inclined or right angled to the longitudinal axis of the catheter tube.
References Cited (Backward Citations)
JPS6416653A
Cited
JPH064301A
Cited
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