EP0437795A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter having a super-elastic metallic tube body
Assignee: Terumo Corp
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Filing: 1990-12-20
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Granted: —
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Expires: 2010-12-20
Abstract
Abstract The catheter of the present invention comprises a body portion (4a), a distal portion (4b) and an internal lumen (6) and at least the above body portion includes a super-elastic metallic tube (2). This catheter has a high efficiency of transmitting the pushing force given at its proximal end (pushability) and a high torque transmission efficiency. Furthermore, since the body portion of the catheter includes a super-elastic metallic tube, the wall thickness of the body portion can be made sufficiently thin and a catheter with a smaller diameter can be formed.
Inventors
- 👤 Masakiyo Nobuyoshi
- 👤 Kyuta C/O Terumo Kabushiki Kaisha Sagae
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 01:46
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M25/0045; A61M2025/0004; A61M25/01; A61M25/06; A61M25/0662
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
A catheter comprising a body portion, a distal portion and an internal lumen, in which at least said body portion includes a super-elastic metallic tube.
Claim 2
Dependent Claim
30 words
A catheter as set forth in claim 1, wherein said body portion comprises said super-elastic metallic tube and a synthetic resin layer covering the surface of said super-elastic metallic tube.
Claim 3
Dependent Claim
30 words
A catheter as set forth in claim 1, wherein said super-elastic metallic tube extends from a proximal end of said body portion to a distal portion of said body portion.
Claim 4
Dependent Claim
28 words
A catheter as set forth in claim 3, wherein the distal portion of said super-elastic metallic tube is more flexible than another portion of said super-elastic metallic tube.
Claim 5
Dependent Claim
53 words
A catheter as set forth in claim 1, wherein said body portion comprises a super-elastic metallic tube and a synthetic resin tube covering the surface of said super-elastic metallic tube and said synthetic resin tube protrudes from a distal tip of said super-elastic metallic tube to form said distal portion of the catheter.
Claim 6
Dependent Claim
91 words
A catheter equipped with an inflatable member which comprises a body portion which forms an internal lumen and includes a super-elastic metallic tube having an opening in a distal portion; a guide portion for guiding the catheter which is attached to the distal tip of said body portion; and a deflatable or foldable and inflatable member which has a tip portion attached to said guide portion or a distal portion of said body portion and a proximal portion attached to said body portion and communicates with said lumen through said opening.
Claim 7
Dependent Claim
18 words
A catheter as set forth in claim 6, wherein said guide portion is formed of a super-elastic alloy.
Claim 8
Dependent Claim
31 words
A catheter as set forth in claim 6 , wherein said body portion comprises said super-elastic metallic tube and a synthetic resin layer covering the surface of said super-elastic metallic tube.
Claim 9
Dependent Claim
173 words
A catheter which comprises an inner tube having a body portion, a distal portion and a first lumen whose tip is open; an outer tube which is disposed coaxially with said inner tube, has a body portion, a distal portion and a distal tip recessed by a predetermined distance from the distal tip of said inner tube and forms a second lumen between an inner surface of said outer tube and an outer surface of said inner tube; a deflatable or foldable and inflatable member which has a tip portion attached to said inner tube and a rear end portion attached to said outer tube and communicates with the second lumen near said rear end portion; a first opening disposed at a proximal portion of said inner tube and communicating with said first lumen; and a second opening disposed at the proximal portion of said outer tube and communicating with said second lumen, in which at least one of the body portions of said inner and outer tubes includes a super-elastic metallic tube.
Claim 10
Dependent Claim
30 words
A catheter as set forth in claim 9, wherein said outer tube comprises a super-elastic metallic tube and a synthetic resin layer covering the surface of said super-elastic metallic tube.
Claim 11
Dependent Claim
54 words
A catheter as set forth in claim 9, wherein said outer tube comprises a super-elastic metallic tube and a synthetic resin tube covering the surface of said super-elastic metallic tube and said synthetic resin tube protrudes from a distal portion of said super-elastic metallic tube to form said distal portion of the outer tube.
Claim 12
Dependent Claim
65 words
A catheter as set forth in claim 9, wherein said inner tube comprises a super-elastic metallic tube and a synthetic resin tube covering the surface of said super-elastic metallic tube or fixed to an inner surface of said super-elastic metallic tube and said synthetic resin tube protrudes from a distal portion of said super-elastic metallic tube to form the distal portion of the inner tube.
References Cited (Backward Citations)
EP0279959A1
Cited
WO1989008473A1
Cited
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