EP0121215A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1984-03-27
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Granted: —
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Expires: 2004-03-27
Abstract
Abstract A catheter or fiberscope for the inspection of an intracardiac area or the like is proposed which has a flexible tube (1) and a balloon (8) mounted on its end. The flexible tube is divided into four passageways, i.e. two fluid passageways and an illumination light transmission line and an image transmission line. A flush of a physiological saline solution (12) is spouted from one fluid passageway outside of the balloon to form a visual field without interfering natural movement of the area (14) to be inspected. A catheter for dissolving a thrombus is also proposed which has a porous tube, instead of a balloon, at its end portion.
Inventors
- 👤 Kiyoshi Inoue
- 👤 Keiichi Kuwaki
- 👤 Koichi C/O Osaka Works Sumitomo Tsuno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/012; A61B1/018; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/015; A61B1/313; A61B1/3137; A61B17/00; A61B17/22; B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; A61B2017/22038; A61B2017/22051; A61B2017/22082; A61B2017/22084; A61B18/00; A61B2018/00982; A61B90/00; A61B90/30; A61B2090/306
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
A catheter comprising a flexible tube having a fluid passageway for a first fluid, and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway to eject to directions other than the axial direction as well as the axial direction.
Claim 2
Dependent Claim
51 words
A catheter comprising a flexible tube having a fluid passageway for a first fluid, and means disposed at a front end portion of said flexible tube for allowing said first fluid fed through said fluid passageway to eject to directions other than the axial direction as well as the axial direction.
Claim 3
Dependent Claim
57 words
The catheter as claimed in claim 1, wherein said flexible tube has a further fluid passageway for a second fluid and said means comprise an inflatable balloon mounted on said front end portion of said flexible tube so as to cover the end of said further fluid passageway, said second fluid being used to inflate said balloon.
Claim 4
Dependent Claim
47 words
The catheter as claimed in claim 2, wherein said flexible tube has an illumination light transmission line and an image transmission line so as to be parallel to said fluid passageways, said balloon covering the ends of said illumination light transmission line and said image transmission line.
Claim 5
Dependent Claim
18 words
The catheter as claimed in claim 3, wherein an image fiber is used for said image transmission line.
Claim 6
Dependent Claim
21 words
The catheter as claimed in claim 3, wherein an optical fiber or fibers are used for said illumination light transmission line.
Claim 7
Dependent Claim
26 words
The catheter as claimed in claim 3, wherein a transparent tube or tubes made of a plastic material are used for said illumination light transmission line.
Claim 8
Dependent Claim
20 words
The catheter as claimed in claim 2, wherein said second fluid is carbonic acid gas or a physiological saline solution.
Claim 9
Dependent Claim
15 words
The catheter as claimed in claim 1, wherein said first fluid is a physiologicallsaline solution.
Claim 10
Dependent Claim
36 words
The catheter as claimed in claim 1, wherein said flexible tube comprises a porous tube covered with a pressure-resistant covering except for end portion thereof, said means comprising the exposed end portion of said porous tube.
Claim 11
Dependent Claim
16 words
The catheter as claimed in claim 9, wherein said first fluid is a thrombus dissolving agent.
Claim 12
Dependent Claim
16 words
The catheter as claimed in claim 9, wherein said porous tube is made of fluoroethylene resin.
Claim 13
Dependent Claim
17 words
The catheter as claimed in claim 9, wherein said pressure-resistant covering is made of fluororubber or silicicrubber.
Claim 14
Dependent Claim
33 words
The catheter as claimed in claim 9, further comprising a guide wire having its rear end inserted into a front end of said porous tube and secured thereto so as to protrude therefrom.
Claim 15
Dependent Claim
15 words
The catheter as claimed in claim 13, wherein said guide wire has a round end.
Claim 16
Dependent Claim
25 words
The catheter as claimed in claim 1, further comprising a magnetic body mounted on said flexible tube at a position adjacent to its front end.
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