EP0284672A1
Expired / Lapsed
EP
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Self-venting balloon dilatation catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1987-12-30
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Granted: —
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Expires: 2007-12-30
Abstract
Abstract Self-venting balloon dilatation catheter (11) having an elongate flexible tubular member (12) having at least one lumen (13) therein extending longitudinally thereof. A balloon (18) is carried by the flexible tubular member (12) and is in communication with the lumen (13). A fitting is carried by the tubular member (12) for inflating the balloon (18) with a balloon inflation medium. A plurality of small passages (26) are formed which permit air to escape from the interior of the balloon (18) but inhibit the passage of the balloon inflation medium from the balloon (18).
Inventors
- 👤 Gary H. Miller
- 👤 Wilfred J. Samson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 00:54
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1077; A61M2025/1079; A61M2025/1086; A61M2025/1093
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
79 words
In a self-venting balloon dilatation catheter, an elongate flexible tubular member having at least one lumen therein extending longitudinally thereof, a balloon carried by the flexible tubular member and in communication with said lumen, means carried by the tubular member for inflating the balloon with a balloon inflation medium and means forming a plurality of small passages permitting air to escape from the interior of the balloon but inhibiting the passage of the balloon inflation medium from the balloon.
Claim 2
Dependent Claim
79 words
In a self-venting balloon dilatation catheter, an elongate flexible tubular member having at least one lumen therein extending longitudinally thereof, a balloon carried by the flexible tubular member and in communication with said lumen, means carried by the tubular member for inflating the balloon with a balloon inflation medium and means forming a plurality of small passages permitting air to escape from the interior of the balloon but inhibiting the passage of the balloon inflation medium from the balloon.
Claim 3
Dependent Claim
17 words
A dilatation catheter as claimed in Claim 1 wherein said small passages are formed by micro-machined holes.
Claim 4
Dependent Claim
20 words
A dilatation catheter as claimed in Claim 2 wherein the holes have a size ranging from .000015 to .0010 inches.
Claim 5
Dependent Claim
17 words
A catheter as claimed in Claim 2 wherein said micro-machined holes are formed in the tubular member.
Claim 6
Dependent Claim
15 words
A catheter as claimed in Claim 2 wherein the holes are formed in the balloon.
Claim 7
Dependent Claim
25 words
A catheter as claimed in any one of claims 1-5 wherein said means forming a plurality of small passages is formed of a porous material.
Claim 8
Dependent Claim
37 words
A catheter as claimed in any one of Claims 1-6 wherein said means forming a plurality of small passages includes a port in communication with the interior of the balloon and a porous material covering said port.
Claim 9
Dependent Claim
23 words
A catheter as claimed in Claim 7 wherein said porous means covering said port is in the form of a porous plastic material.
Claim 10
Dependent Claim
23 words
A catheter as claimed in Claim 7 wherein said porous means covering said port is in the form of a porous metallic material.
Claim 11
Dependent Claim
16 words
A catheter as claimed in Claim 9 wherein said porous metallic material is a radiopaque material.
Claim 12
Dependent Claim
36 words
A catheter as claimed in any one of Claims 1-10 wherein said elongate flexible member has an additional lumen, said additional lumen extending through the catheter and permitting a movable guide wire to be inserted therethrough.
Claim 13
Dependent Claim
29 words
A catheter as claimed in Claim 11 wherein said additional lumen extends through the balloon and wherein the means forming small passages is carried by the elongate tubular member.
Claim 14
Dependent Claim
18 words
A catheter as claimed in Claim 11 wherein said means forming small passages is carried by the balloon.
Claim 15
Dependent Claim
47 words
A catheter as claimed in any one of Claims 1-13 together with an adapter carried by the proximal extremity of the tubular member and having it least one arm in which air is entrapped during filling of the balloon, and self-venting means carried by said one arm.
Claim 16
Dependent Claim
23 words
A catheter as claimed in Claim 14 wherein said self-venting means is in the form of a plurality of spaced apart small holes.
Claim 17
Dependent Claim
103 words
In a self-venting balloon dilatation catheter, a first elongate flexible tubular member having a flow passage extending therethrough, a second elongate flexible tubular member coaxially disposed on said first tubular member and defining an annular flow passage extending longitudinally of the same, a balloon carried by the second tubular member and in communication with the annular flow passage and means forming said passages carried by at least one of said first and second members for permitting air to escape through said at least one member from the interior of the balloon while inhibiting the escape of the balloon inflation medium from the balloon.
Claim 18
Dependent Claim
103 words
In a self-venting balloon dilatation catheter, a first elongate flexible tubular member having a flow passage extending therethrough, a second elongate flexible tubular member coaxially disposed on said first tubular member and defining an annular flow passage extending longitudinally of the same, a balloon carried by the second tubular member and in communication with the annular flow passage and means forming said passages carried by at least one of said first and second members for permitting air to escape through said at least one member from the interior of the balloon while inhibiting the escape of the balloon inflation medium from the balloon.
Claim 19
Dependent Claim
20 words
A catheter as claimed in Claim 14 wherein said means forming small passages is in the form of micro-machined holes.
Claim 20
Dependent Claim
26 words
A catheter as claimed in Claim 14 wherein said small passages are carried by the first tubular member in communication with the interior of the balloon.
Claim 21
Dependent Claim
16 words
A catheter as claimed in Claim 14 wherein the small passages are carried by the balloon.
Claim 22
Dependent Claim
38 words
A catheter as claimed in Claim 14 wherein a port is formed in the first tubular member in communication with the interior of the balloon and wherein said means forming small passages includes porous means covering said port.
Claim 23
Dependent Claim
106 words
In a method for providing self-venting of a balloon dilatation catheter having a first elongate tubular member with a lumen extending longitudinally thereof, a balloon carried by the flexible tubular member and means for inflating the balloon with a balloon inflation medium, the method comprising the steps of providing a plurality of spaced apart small passages spaced longitudinally of the catheter and establishing communication between the interior of the balloon and ambient and placing a balloon inflation medium in the lumen to inflate the balloon and to cause air in the balloon to pass through successive passages as the balloon is filled with the inflation medium.
Claim 24
Dependent Claim
106 words
In a method for providing self-venting of a balloon dilatation catheter having a first elongate tubular member with a lumen extending longitudinally thereof, a balloon carried by the flexible tubular member and means for inflating the balloon with a balloon inflation medium, the method comprising the steps of providing a plurality of spaced apart small passages spaced longitudinally of the catheter and establishing communication between the interior of the balloon and ambient and placing a balloon inflation medium in the lumen to inflate the balloon and to cause air in the balloon to pass through successive passages as the balloon is filled with the inflation medium.
Claim 25
Dependent Claim
16 words
A method as claimed in Claim 21 wherein the small passages are provided by micro-machined holes.
Claim 26
Dependent Claim
16 words
A method as claimed in Claim 21 wherein the holes are spaced longitudinally of the catheter.
Claim 27
Dependent Claim
25 words
A method as claimed in Claim 22 wherein said holes are formed in size ranging from .0004 mm - .025 mm (.000015 to .00100 inch).
Claim 28
Dependent Claim
15 words
A method as claimed in Claim 22 wherein the holes are formed with a laser.
Claim 29
Dependent Claim
18 words
A method as claimed in Claim 22 wherein the small passages are formed by utilizing a porous material.
Claim 30
Independent Claim
37 words
A method as claimed in any one of Claims 21-27 wherein the catheter has an adapter at the proximal end of the catheter having an arm together with the step of placing self-venting holes in the adapter.
References Cited (Backward Citations)
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