EP0420486A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Small diameter dilatation catheter having wire reinforced coaxial tubular body
Assignee: Schneider USA Inc
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Filing: 1990-09-19
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Granted: —
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Expires: 2010-09-19
Abstract
Abstract A small diameter dilatation catheter (10) for coronary angioplasty is achieved by providing first and second elongated flexible, thin-wall tubes (12, 20), each having one or more reinforcing wires (40, 44) encapsulated in the walls thereof and dimensioned such that the second tube (20) may be coaxially disposed within the lumen (18) of the first tube (12). The preferred material from which the two tubes (12, 20) are fabricated is polyimide. The longitudinally extending reinforcing wires (40, 44) provide the requisite "pushability" characteristics required by PTCA dilatation catheters. The balloon or inflation member (30) has its proximal end (32) bonded to the outer surface of the outer tube (12) and its distal end (34) bonded to the outer surface of the tube (20). Inflation fluid then may be perfused between the I.D. of the outer tube (12) and the O.D. of the inner tube (20).
Inventors
- 👤 Brenda L. Aase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M25/005; A61M2025/0004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
257 words
A balloon catheter comprising: (a) a first elongated, flexible plastic tubular member (12) having a proximal end (14), a distal end (16) and a lumen (18) extending from said proximal end (14) to said distal end (16), said first tubular member (11) having reinforcing means (40) embedded in the wall thereof along substantially the entire length of said first tubular member; (b) a second elongated, flexible plastic tubular member (20) having a proximal end (22), a distal end and a lumen (26) extending from said proximal end (22) to said distal end, said second tubular member (20) being disposed in said lumen (18) of said first tubular member (11) with a distal end portion of said second tubular member (20) extending out beyond said distal end (16) of said first tubular member (11); (c) an inflatable expander member (30) having a proximal end (31) and a distal end (34), said proximal end (32) being circumferentially bonded to the exterior wall of said first tubular members (12) near said distal end (16) of said first tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said distal end portion of said second tubular member (20); and (20). (d) a hub member (24) affixed to said proximal ends (14, 22) of said first and second tubular members (11, 20) with said hub member (24) including an inflation port (26) in fluid communication with the annular space in said lumen (18) of said first tubular member (12) surrounding said second tubular member (20).
Claim 2
Dependent Claim
257 words
A balloon catheter comprising: (a) a first elongated, flexible plastic tubular member (12) having a proximal end (14), a distal end (16) and a lumen (18) extending from said proximal end (14) to said distal end (16), said first tubular member (11) having reinforcing means (40) embedded in the wall thereof along substantially the entire length of said first tubular member; (b) a second elongated, flexible plastic tubular member (20) having a proximal end (22), a distal end and a lumen (26) extending from said proximal end (22) to said distal end, said second tubular member (20) being disposed in said lumen (18) of said first tubular member (11) with a distal end portion of said second tubular member (20) extending out beyond said distal end (16) of said first tubular member (11); (c) an inflatable expander member (30) having a proximal end (31) and a distal end (34), said proximal end (32) being circumferentially bonded to the exterior wall of said first tubular members (12) near said distal end (16) of said first tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said distal end portion of said second tubular member (20); and (20). (d) a hub member (24) affixed to said proximal ends (14, 22) of said first and second tubular members (11, 20) with said hub member (24) including an inflation port (26) in fluid communication with the annular space in said lumen (18) of said first tubular member (12) surrounding said second tubular member (20).
Claim 3
Dependent Claim
43 words
The catheter (10) as in Claim 1 wherein said reinforcing means (40) in one of said first and second tubular members (12, 20) comprises at least one strand of wire extending parallel to the longitudinal axis of said first and second tubular members.
Claim 4
Dependent Claim
32 words
The catheter (10) as in Claim 1 and further including reinforcing means (44) in the wall of said second tubular member (20) extending substantially the entire length of said second tubular member.
Claim 5
Dependent Claim
46 words
The catheter as in Claim 3 wherein said reinforcing means in one of said first and second tubular members (12, 20) includes a plurality of radially spaced wire strands (40a, 40b, 44a, 44b) extending parallel to the longitudinal axis of said first and second tubular members.
Claim 6
Dependent Claim
28 words
The catheter as in Claim 3 wherein said reinforcing means in one of said first and second tubular members (12, 20) is a layer of braided wires (46).
Claim 7
Dependent Claim
206 words
A dilatation catheter comprising: (a) an outer, flexible, elongate tubular member (12) having a proximal end (14), a distal end (16) and stiffening means (40) embedded in the wall of said outer tubular member and extending from said proximal end (14) to said distal end (16); (b) an inner, flexible, elongate tubular member (20) having a proximal end (22), a distal end, and having stiffening means (44) embedded in the wall of said inner tubular member (20), said inner tubular member (20) being coaxially disposed in the lumen (18) of said outer tubular member (12) with a predetermined clearance between said outer and inner tubular members (12, 20) with a distal end portion of said inner tubular member (20) extending beyond said distal end (16) of said outer tubular member (12); and (c) a tubular, inflatable expander member (30) having a proximal end (32) and a distal end (34), said proximal end (32) of said expander member (30) being circumferentially bonded to said wall of said outer tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said wall of said inner tubular member (20) at a location on said distal end portion of said inner tubular member (20).
Claim 8
Dependent Claim
206 words
A dilatation catheter comprising: (a) an outer, flexible, elongate tubular member (12) having a proximal end (14), a distal end (16) and stiffening means (40) embedded in the wall of said outer tubular member and extending from said proximal end (14) to said distal end (16); (b) an inner, flexible, elongate tubular member (20) having a proximal end (22), a distal end, and having stiffening means (44) embedded in the wall of said inner tubular member (20), said inner tubular member (20) being coaxially disposed in the lumen (18) of said outer tubular member (12) with a predetermined clearance between said outer and inner tubular members (12, 20) with a distal end portion of said inner tubular member (20) extending beyond said distal end (16) of said outer tubular member (12); and (c) a tubular, inflatable expander member (30) having a proximal end (32) and a distal end (34), said proximal end (32) of said expander member (30) being circumferentially bonded to said wall of said outer tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said wall of said inner tubular member (20) at a location on said distal end portion of said inner tubular member (20).
Claim 9
Dependent Claim
34 words
The catheter of Claim 6 wherein said stiffening means (40) in said outer tubular member (12) comprises at least one wire extending generally parallel to the longitudinal axis of said outer tubular member (12).
Claim 10
Dependent Claim
35 words
The catheter as in Claim 6 wherein said stiffening means (44) in said inner tubular member (20) comprises at least one wire extending generally parallel to the longitudinal axis of said inner tubular member (20).
Claim 11
Dependent Claim
16 words
The catheter as in Claim 6 wherein said stiffening means comprises a braided wire tubular sheath.
Claim 12
Dependent Claim
256 words
A balloon catheter comprising: (a) a first elongated, flexible plastic tubular member (12) having a proximal end (14), a distal end (16) and a lumen (18) extending from said proximal end (14) to said distal end (16); (b) a second elongated, flexible plastic tubular member (20) having a proximal end (22), a distal end and a lumen (26) extending from said proximal end (22) to said distal end, said second tubular member (20) including reinforcing means (44) in the wall thereof along substantially the entire length of said second tubular member (20), said second tubular member (20) being disposed in said lumen (18) of said first tubular member (12) with a distal end portion of said second tubular member (20) extending out beyond said distal end (16) of said first tubular member (12); (c) an inflatable expander member (30) having a proximal end (32) and a distal end (34), said proximal end (32) being circumferentially bonded to the exterior wall of said first tubular member (12) near said distal end (16) of said first tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said distal end portion of said second tubular member (20); and (d) a hub member (24) affixed to said proximal ends (14, 22) of said first and second tubular members (12, 20) with said hub member (24) including an inflation port (26) in fluid communication with the annular space in said lumen (18) of said first tubular member (12) surrounding said second tubular member (20).
Claim 13
Dependent Claim
256 words
A balloon catheter comprising: (a) a first elongated, flexible plastic tubular member (12) having a proximal end (14), a distal end (16) and a lumen (18) extending from said proximal end (14) to said distal end (16); (b) a second elongated, flexible plastic tubular member (20) having a proximal end (22), a distal end and a lumen (26) extending from said proximal end (22) to said distal end, said second tubular member (20) including reinforcing means (44) in the wall thereof along substantially the entire length of said second tubular member (20), said second tubular member (20) being disposed in said lumen (18) of said first tubular member (12) with a distal end portion of said second tubular member (20) extending out beyond said distal end (16) of said first tubular member (12); (c) an inflatable expander member (30) having a proximal end (32) and a distal end (34), said proximal end (32) being circumferentially bonded to the exterior wall of said first tubular member (12) near said distal end (16) of said first tubular member (12) and said distal end (34) of said expander member (30) being circumferentially bonded to said distal end portion of said second tubular member (20); and (d) a hub member (24) affixed to said proximal ends (14, 22) of said first and second tubular members (12, 20) with said hub member (24) including an inflation port (26) in fluid communication with the annular space in said lumen (18) of said first tubular member (12) surrounding said second tubular member (20).
References Cited (Backward Citations)
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