EP0597465B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter for dilating stenotic lesions
Assignee: Boston Scientific Scimed Inc
•
Filing: 1988-09-20
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Granted: 2000-02-09
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Expires: 2008-09-20
Abstract
Abstract A catheter for dilating stenotic lesions has an elongated body (I) with at least one lumen (12) extending therethrough. A tip (T), constructed of materials softer than the elongated body is attached to the distal end of the body. The tip segment has at least one lumen (14) passing therethrough which is in alignment with the lumen (12) in the elongated body. A guide is adapted to pass through the aligned lumens. A balloon (D) is connected to the distal segment of the elongated body over its outer periphery, thereby creating a balloon cavity (24) therebetween. At least one additional lumen (A) is provided in the elongated body in flow communication with the balloon cavity, for selective inflation and deflation thereof, with a contrast fluid.
Inventors
- 👤 Bandula Wijai
- 👤 Paolo Angelini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 06:38
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/1002; A61M29/00; A61M2025/0004; A61M2025/0006; A61M25/0067; A61M25/008; A61M2025/0081; A61M2025/1043; A61M2025/1059; A61M2025/1079; A61M2025/1093; A61M25/0068; A61M25/0069; A61M25/0071
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
91 words
An angioplasty catheter (C) having an elongated body, a
balloon (D) and means for inflation of a balloon; said elongated body comprises an inner body member (I)
and an outer body member (B) in a coaxial arrangement; wherein the inner and outer body member define an annulus (A)
between them for inflating the balloon (D), and said balloon (D) has a plurality of stages of differing
outside diameters when said balloon has been inflated;
whereupon the same catheter (C) can be used to dilate a
stenosis in progressively increasing dimensional increments.
Claim 2
Dependent Claim
18 words
The catheter of claim 1, characterized in that said
inner body member (I) comprises a tapered segment (20).
Claim 3
Dependent Claim
20 words
The catheter of claim 1 or 2, characterized in that
said outer body member (B) comprises a tapered segment
(64).
Claim 4
Dependent Claim
129 words
The catheter of any of claims 1 to 3, comprising: a first pressure-sensing element mounted to the catheter
(C), said first element adapted to sense pressure
in the vascular system or the patient's body cavity
distally (214) of said balloon (D) and transmit a first
electrical signal in relation thereto; a second pressure-sensing element mounted to the catheter
(C), said second element adapted to sense pressure
in the vascular system or the patient's body cavity
proximally (206) of said balloon (D) and transmit a
second electrical signal in relation thereto; signal conduction means (230, 232) mounted to the
catheter (C) connected to said first and second pressure-sensing
elements for conducting said first and
second electrical signals from the proximal end of the
catheter (C) located outside the patient's body.
Claim 5
Dependent Claim
171 words
The catheter of any of claims 1 to 4, insertable over a
guide, wherein: said elongated body has a proximal and distal segment,
a tip (T), which defines at least one substantially
smooth-bore lumen (14) extending therethrough, a lumen
(12) in said body in flow communication with said lumen
(14) in said tip (T) thereby allowing the catheter (C)
to be advanced over a guide extending through said
lumen (12, 14) in said body and in said tip (T); said balloon (D) is mounted in close proximity to the
outer surface of said distal segment of said body
defining a balloon cavity (24) therebetween, said balloon
(D) has a proximal and distal neck, said balloon
(D) is disposed substantially proximally to said tip
(T), said distal neck of said balloon (D) is mounted
adjacent to the juncture between said elongated tip (T)
segment and said distal end of said distal segment of
said body; and means within said body for selectively inflating and
deflating said balloon (D) through said cavity (24).
Claim 6
Dependent Claim
18 words
The catheter of claim 5, insertable over a guide,
wherein said body being harder than said tip (T).
Claim 7
Dependent Claim
100 words
The catheter of claim 5 or 6, wherein: the proximal end of said tip (T) has an adjacent internal
mounting shoulder (34) circumscribing said lumen
(14) extending therethrough; said shoulder (34) is mounted to the distal end (10) of
said distal segment of said body; and the distal neck of said balloon (D) is connected
directly onto the outer surface of said distal segment
of said body adjacent to the proximal end of said tip
(T) whereupon the outer surface of the distal neck of
said balloon (D) is substantially longitudinally
aligned with the outer surface of said tip (T).
Claim 8
Dependent Claim
108 words
The catheter of any of claims 5 to 7, wherein: the proximal end of said tip (T) has an adjacent internal
mounting shoulder (34) circumscribing said lumen
(14) extending therethrough; said shoulder (34) is mounted to the distal end (10) of
said distal segment of said body; and said tip (T) further comprising; an external mounting shoulder (48) adjacent its proximal
end; and said distal neck of said balloon (D) is connected to
said external shoulder (48) whereupon the outer surface
of the distal neck of said balloon (D) is substantially
aligned with the outer surface of said tip (T) adjacent
the proximal end of said tip (T).
Claim 9
Dependent Claim
63 words
The catheter of any of claims 5 to 8, wherein: said tip (T) is mounted to the distal extremity of said
body thereby defining a joint therebetween; said tip (T) having an outer surface substantially in
longitudinal alignment with the outer surface of said
distal segment of said body; said distal neck of said balloon (D) is mounted over
said aligned outer surfaces.
Claim 10
Dependent Claim
28 words
The catheter of any of claims 1 to 9, wherein the balloon
(D) has two stages of differing outside diameters
(236, 238) when said balloon (D) is inflated.
Claim 11
Dependent Claim
21 words
The catheter of any of claims 1 to 10, wherein said
catheter (C) comprises a tip (T) of a radioopaque material.
Claim 12
Dependent Claim
22 words
The catheter of any of claims 1 to 11, wherein the balloon
(D) is coated with a combination of silicone and
heparin.
Claim 13
Dependent Claim
17 words
The catheter of claim 12, wherein the silicone is a
silicone type 4159 from Dow Corning company.
References Cited (Backward Citations)
No citation records indexed.
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