Patent US2559746A successfully refreshed from Google Patents.
EP0761253A2
Expired / Lapsed
EP
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Blood vessel dilator
Assignee: Terumo Corp
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Filing: 1996-09-05
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Granted: —
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Expires: 2016-09-05
Abstract
Abstract A blood vessel dilator (1) has an inner tube (5) defining a first passageway (4) therein, an outer tube (2) over the inner tube (5) and forming a second passageway (6), and a dilating member (3) communicating with the second passageway (6). The outer tube (6) is constituted by an inner tubular component (2b) having a high rigidity, and an outer tubular component (2a) covering the inner tubular component (2b). The forward end portion (2c) of the outer tubular component (2a) protrudes from the distal end of the inner tubular component (2b), and its distal end portion is diametrically constricted to closely contact the inner tube (5) and extends near the distal end of the inner tube (5).
Inventors
- 👤 Kinya c/o Terumo K.K. Harada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 09:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M2025/0004; A61M25/0043; A61M25/005; A61M25/0051; A61M25/0052; A61M25/0054; A61M25/1006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
285 words
A blood vessel dilator (1) comprising: an inner tube (5) having an open distal end and defining a first passageway (4) therein; an outer tube (2) coaxially mounted over the inner tube (5) and defining a second passageway (6) therebetween; a contractible or foldable dilating member (3) communicating with the second passageway (6); a first opening (9) formed at a portion of said inner tube (5) disposed proximally from said open distal end and communicating with said first passageway (4); and a second opening (12) formed at a proximal end of said outer tube (2) and communicating with said second passageway (6); wherein said outer tube (2) is composed of a rigid inner tubular component (2b) and an outer tubular component (2a) covering said inner tubular component (2b), a forward portion (2c) of said outer tubular component (2a) being extended farther from a distal end of the inner tubular component (2b); a distal end portion of said forward portion (2c) of said outer tubular component (2a) is diametrically contracted and fixed onto an outer peripheral surface of said inner tube (5) and extended near the distal end of the inner tube (5); an opening (12) for allowing said second passageway (6) to communicate with an interior of said dilating member (3) is formed at proximal end portion of said forward portion (2c) of said outer tubular component (2a); a distal end portion of said dilating member (3) is fixed to a portion of said outer tubular component (2a) which is contacted with said inner tube (5); and a proximal end portion of said dilating member (3) is attached to a portion of said outer tubular component (2a) which is located rearward of said opening (12).
Claim 2
Dependent Claim
23 words
The blood vessel dilator according to claim 1, characterized in that said inner tubular component (2b) is formed of a superelastic alloy tube.
Claim 3
Dependent Claim
37 words
The blood vessel dilator according to claim 1 or 2, characterized in that a distal end portion of said inner tubular component (2b) is more flexible as compared with other portions of said inner tubular component (2b).
Claim 4
Dependent Claim
52 words
The blood vessel dilator according to one of claims 1-3, characterized in that a distal end portion of said inner tubular component (2b) which is covered by said outer tubular component (2a) is extended from a distal end of said dilating member (3) by a length of 1 mm to 30 mm.
Claim 5
Dependent Claim
194 words
A blood vessel dilator (1) comprising: an inner tube (5) having an open distal end and defining a first passageway (4) therein; an outer tube (2) mounted over the inner tube (5) so as to form a second passageway (6); a contractible or foldable dilating member (3) communciating with the second passageway (6); a first opening (9) formed at a portion of said inner tube (5) disposed proximally from said open distal end and communicating with said first passageway (4); and a second opening (12) formed at a proximal end of said outer tube (2) and communicating with said second passageway (6); wherein a distal end portion of the inner tube (5) is reinforced more strongly than other portions of the inner tube (5), thus forming a reinforced distal end portion (10); the distal end portion of the dilating member (3) is fixed to said reinforced distal end portion (10); the proximal end portion of the dilating member (3) is fixed to said outer tube (2); and said reinforced distal end portion (10) is extended from the distal end portion of the dilating member (3) by a distance of 1 mm to 30 mm.
Claim 6
Dependent Claim
37 words
The blood vessel dilator according to claim 5, characterized in that said reinforced distal end portion (10) is extended from a distal end of the dilating member (3) by a length of 10 mm to 30 mm.
Claim 7
Dependent Claim
37 words
The blood vessel dilator according to claim 5 or 6, characterized in that said reinforced distal end portion (10) is constructed by covering a distal end portion of said inner tube (5) with a synthetic resin tube.
Claim 8
Dependent Claim
43 words
The blood vessel dilator according to one of claims 5-7, characterized in that said reinforced distal end portion (10) is provided with a diametrically enlarged portion (13) at a portion which is located forward of the distal end of the dilating member (3).
Claim 9
Dependent Claim
58 words
The blood vessel dilator according to one of claims 5-8, characterized in that said reinforced distal end portion (10) is constructed such that it is formed by being covered by a synthetic resin tube, and provided with an X-ray contrast marker (14a) at a portion which is located forward of the distal end of said dilating member (3).
Claim 10
Dependent Claim
28 words
The blood vessel dilator according to claim 9, characterized in that said X-ray contrast marker (14a) is interposed between said inner tube (5) and said synthetic resin tube.
Claim 11
Dependent Claim
64 words
A pre-dilator for pre-dilating blood vessel, comprising: an inner tube (5) defining therein a passageway (4) open at its distal end; an outer tube (2) over said inner tube (5); and an opening (9) communicating with said passageway (4); wherein a distal end portion of said inner tube (5) constitutes a reinforced end portion (10) having a length of 1 mm to 30 mm.
Claim 12
Dependent Claim
23 words
The pre-dilator according to claim 11, characterized in that said reinforced end portion (10) has a length of 10 mm to 30 mm.
Claim 13
Dependent Claim
35 words
The pre-dilator according to claim 11 or 12, characterized in that said reinforced end portion (10) is constituted by the distal end portion of said inner tube (5) covered with a synthetic resin tubular member.
Claim 14
Dependent Claim
47 words
The pre-dilator according to claim 13, characterized in that said reinforced end portion (10) is constituted by the distal end portion of said inner tube (5) covered with a synthetic resin tubular member, and the reinforced end portion (10) has an X-ray contrast marker (14a) provided therein.
Claim 15
Dependent Claim
23 words
The pre-dilator according to claim 14, characterized in that said marker (14a) is provided between said inner tube (5) and said tubular member.
References Cited (Backward Citations)
No citation records indexed.
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