EP0260107A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tandem independently inflatable/deflatable multiple diameter balloon angioplasty catheter systems.
Assignee: Individual
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Filing: 1987-09-08
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Granted: —
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Expires: 2007-09-08
Abstract
Abstract Disclosed is a catheter (10) for performing balloon angioplasty, which includes an elongate, flexible catheter shaft (12) having a plurality of lumens therethrough, a plurality of imperforate angioplasty balloons (16, 20) physically connected to the shaft (12), with the interior of each of the balloons (16, 20) in fluid communication with a different one of the lumens (24, 26, 28) for separate inflation and deflation, each of the balloons (16, 20) having an inflatable portion and a predetermined maximum inflated diameter and being formed of non-elastomeric material, the balloons (16, 20) being capable of substantially maintaining the predetermined maximum inflated diameter at inflation pressures of 100 psi, and the balloons comprise a first balloon (16) on the catheter shaft (12) near the distal end thereof, and a second balloon (20) on the catheter shaft (12) proximally of and adjacent to the first balloon (16), where the maximum inflated diameter of the first balloon (16) is less than the maximum inflated diameter of the second balloon (20), and an attachment site (34) on the catheter shaft (12) to which the proximal end of the first balloon (16) or the distal end of the second balloon (20) or both are attached, and a part of the inflatable portion of one of the balloons (16, 20) is permanently located over the attachment site (34). One end of one of the balloons is preferably joined to the wall (18) of another of the balloons.
Inventors
- 👤 G. David Jang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/1011; A61M2025/1013; A61M2025/1043; A61M2025/1072; A61M2025/1079
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
227 words
A catheter (10) for performing balloon angioplasty, characterized by: an elongate, flexible catheter shaft (12) having a plurality of lumens (22, 24, 26, 28), therethrough; a plurality of imperforate angioplasty balloons (16, 20) physically connected to said shaft (12), with the interior of each of said balloons (16, 20) in fluid communication with a different one of said lumens (24, 26), for separate inflation and deflation, each of said balloons (16, 20) having an inflatable portion and a predetermined maximum inflated diameter and being formed of non-elastomeric material, said balloons (16, 20) being capable of substantially maintaining said predetermined maximum inflated diameter at inflation pressures of 100 psi; said balloons comprising: a first balloon (16) on said catheter shaft (12) near the distal end thereof; and a second balloon (20) on said catheter shaft (12) proximally of and adjacent to said first balloon (16), further characterized in that the maximum inflated diameter of said first balloon (16) is less than the maximum inflated diameter of said second balloon (20); and an attachment site (34) on said catheter shaft (12) to which the proximal end of said first balloon (16) or the distal end of said second balloon (20) or both are attached, further characterized in that a part of the inflatable portion of one of said balloons (16, 20) is permanently located over said attachment site (34).
Claim 2
Dependent Claim
227 words
A catheter (10) for performing balloon angioplasty, characterized by: an elongate, flexible catheter shaft (12) having a plurality of lumens (22, 24, 26, 28), therethrough; a plurality of imperforate angioplasty balloons (16, 20) physically connected to said shaft (12), with the interior of each of said balloons (16, 20) in fluid communication with a different one of said lumens (24, 26), for separate inflation and deflation, each of said balloons (16, 20) having an inflatable portion and a predetermined maximum inflated diameter and being formed of non-elastomeric material, said balloons (16, 20) being capable of substantially maintaining said predetermined maximum inflated diameter at inflation pressures of 100 psi; said balloons comprising: a first balloon (16) on said catheter shaft (12) near the distal end thereof; and a second balloon (20) on said catheter shaft (12) proximally of and adjacent to said first balloon (16), further characterized in that the maximum inflated diameter of said first balloon (16) is less than the maximum inflated diameter of said second balloon (20); and an attachment site (34) on said catheter shaft (12) to which the proximal end of said first balloon (16) or the distal end of said second balloon (20) or both are attached, further characterized in that a part of the inflatable portion of one of said balloons (16, 20) is permanently located over said attachment site (34).
Claim 3
Dependent Claim
58 words
The catheter (10) of Claim 1, further characterized in that the proximal end of said first balloon (16) and the distal end of said second balloon (20) are joined to said attachment site (34), and either said first balloon (16) or said second balloon (20) has been formed to at least partially prolapse over said attachment site (34).
Claim 4
Dependent Claim
55 words
The catheter (10) of Claim 1, further characterized in that the distal end of said second balloon (20) is attached to said attachment site (34) and the proximal end of said first balloon (16) is attached to the wall of said second balloon (20) proximally of said attachment site (34) on said catheter shaft (12).
Claim 5
Dependent Claim
55 words
The catheter (10) of Claim 1, further characterized in that the distal end of said second balloon (20) is bonded to the wall of the first balloon (16) distally of the proximal end of said first balloon (16), so that the inflatable portion of said first balloon (16) is partially inside said second balloon (20).
Claim 6
Dependent Claim
75 words
The catheter (10) of Claim 4, further characterized in that the maximum inflated diameter of the portion of said first balloon (16) inside said second balloon (20) is less than the maximum inflated diameter of the portion of said first balloon (16) outside of said second balloon (20) by the thicknesses of said second balloon (20) overlying said first balloon (16) when said first balloon (16) is inflated and said second balloon (20) is uninflated.
Claim 7
Dependent Claim
30 words
The catheter (10) of Claim 4 or 5, further characterized in that less than 35% of the inflatable length of said first balloon (16) is inside said second balloon (20).
Claim 8
Dependent Claim
34 words
The catheter (10) of Claim 4 or 5, further characterized in that at least 35% but less than 85% of the inflatable length of said first balloon (16) is inside said second balloon (20).
Claim 9
Dependent Claim
205 words
A catheter (10) for performing balloon angioplasty, comprising: an elongate, flexible catheter shaft (12) having a plurality of lumens therethrough; a plurality of imperforate angioplasty balloons (16, 20) on said shaft (12), with the interior of each of said balloons (16, 20) in fluid communication with a different one of said lumens for separate inflation and deflation, each of said balloons (16, 20) having a predetermined maximum inflated diameter and being formed of non-elastomeric material, said balloons (16, 20) being capable of substantially maintaining said predetermined maximum inflated diameter at inflation pressures of 100 psi; an axial torque guidewire extending through said catheter shaft (12) and out of the distal end of said catheter shaft (12); said balloons comprising: a first balloon (16) on said catheter shaft (12) near the distal end thereof; and a second balloon (20) on said catheter shaft (12) proximally of and adjacent to said first balloon (16), characterized in that the maximum inflated diameter of said first balloon (16) is less than the maximum inflated diameter of said second balloon (20), and the distal end of said first balloon (16) is bonded to said guidewire and the proximal end of said first balloon (16) is bonded to said shaft (12).
Claim 10
Dependent Claim
205 words
A catheter (10) for performing balloon angioplasty, comprising: an elongate, flexible catheter shaft (12) having a plurality of lumens therethrough; a plurality of imperforate angioplasty balloons (16, 20) on said shaft (12), with the interior of each of said balloons (16, 20) in fluid communication with a different one of said lumens for separate inflation and deflation, each of said balloons (16, 20) having a predetermined maximum inflated diameter and being formed of non-elastomeric material, said balloons (16, 20) being capable of substantially maintaining said predetermined maximum inflated diameter at inflation pressures of 100 psi; an axial torque guidewire extending through said catheter shaft (12) and out of the distal end of said catheter shaft (12); said balloons comprising: a first balloon (16) on said catheter shaft (12) near the distal end thereof; and a second balloon (20) on said catheter shaft (12) proximally of and adjacent to said first balloon (16), characterized in that the maximum inflated diameter of said first balloon (16) is less than the maximum inflated diameter of said second balloon (20), and the distal end of said first balloon (16) is bonded to said guidewire and the proximal end of said first balloon (16) is bonded to said shaft (12).
Claim 11
Dependent Claim
29 words
The catheter (10) of Claim 8, further characterized in that said first balloon (16) and said second balloon (20) are formed of a single, continuous tube of polymer material.
Claim 12
Dependent Claim
51 words
The catheter (10) of any of claims 1-9, further characterized by a third balloon (21) on said catheter shaft (12) proximally of and adjacent to said second balloon (20) and the maximum inflated diameter of said third balloon (21) is greater than the maximum inflated diameter of said second balloon (20).
Claim 13
Dependent Claim
54 words
The catheter (10) of Claim 10, further characterized in that the distal end of said third balloon (21) is bonded to said catheter shaft (12), and the proximal end of said second balloon (20) is bonded to the wall of said third balloon (21) proximally of the distal end of said third balloon (21).
Claim 14
Dependent Claim
28 words
The catheter (10) of Claim 10, further characterized in that the distal end of said third balloon (21) is bonded to the wall of said second balloon (20).
Claim 15
Dependent Claim
28 words
The catheter (10) of Claim 12, further characterized in that less than 35% of the inflatable length of said second balloon (20) is inside said third balloon (21).
Claim 16
Dependent Claim
32 words
The catheter (10) of Claim 12, further characterized in that at least 35% but less than 85% of the inflatable length of said second balloon (20) is inside said third balloon (21).
Claim 17
Dependent Claim
60 words
The catheter (10) of any of Claims 1-9, further characterized by a third balloon (21) on said catheter shaft (12), characterized in that the proximal end of said third balloon (21) is bonded to the wall of said second balloon (20) and the distal end of said third balloon (21) is bonded to the wall of said first balloon (16).
Claim 18
Dependent Claim
49 words
The catheter (10) of any of Claims 1-15, further characterized by an axial torque guidewire 64 extending through said catheter shaft (12) and extending out of the distal end of said catheter shaft (12) and the distal end of said first balloon (16) is bonded to said wire (64).
Claim 19
Dependent Claim
33 words
The catheter (10) of any of Claims 1-16, further characterized in that said balloons (16, 20, 21) are capable of substantially maintaining said predetermined maximum inflated diameter at inflation pressures of 150 psi.
Claim 20
Dependent Claim
32 words
The catheter (10) of any of Claims 1-17,further characterized by a radiopaque marker (32) on said catheter (10) at the longitudinal location of at least one of said balloons (16, 20, 21).
Claim 21
Dependent Claim
24 words
The catheter (10) of Claim 18, further characterized by a radiopaque marker on said catheter (10) at the longitudinal location of each said balloon.
Claim 22
Dependent Claim
27 words
The catheter (10) of any of Claims 1-19, further characterized in that the length of each of said balloons (16, 20, 21) does not exceed 40 mm.
Claim 23
Dependent Claim
29 words
The catheter (10) of any of Claims 1-20, further characterized in that the maximum inflated diameter of each of said balloons (16, 20, 21) does not exceed 4.5 mm.
Claim 24
Dependent Claim
27 words
The catheter (10) of any of Claims 1-19, further characterized in that the length of each of said balloons (16, 20, 21) does not exceed 80 mm.
Claim 25
Dependent Claim
27 words
The catheter (10) of Claim 22, further characterized in that the maximum inflated diameter of each of said balloons (16, 20, 21) does not exceed 15 mm.
Claim 26
Dependent Claim
33 words
The catheter (10) of any of Claims 1-23, further characterized in that the maximum deflated diameter of each of said balloons (16, 20, 21) on said catheter (10) does not exceed 1 mm.
Claim 27
Dependent Claim
42 words
The catheter (10) of any of Claims 1-15, further characterized in that the catheter shaft (12) extends through all of said balloons (16, 20, 21), further characterized by a central lumen extending through said catheter shaft (12) for receiving a steerable guidewire.
Claim 28
Dependent Claim
29 words
The catheter (10) of Claim 25, further characterized by a lumen (22) for permitting the flow of blood through the catheter shaft (12) past said balloons (16, 20, 21).
Claim 29
Dependent Claim
83 words
The catheter (10) of any of Claims 8-15, further characterized in that at least two of said balloons (16, 20, 21) are formed of a single continuous tube of polymer material, further characterized by an annular partition (62) of balloon material in said tube having an inner edge and an outer edge and said outer edge is bonded to said tube and said inner edge is bonded to said catheter shaft (12) to separate the interiors of said balloons formed of said tube.
References Cited (Backward Citations)
No citation records indexed.
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