EP0633041A1
Expired / Lapsed
EP
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Medical appliances for the treatment of blood vessels by means of ionizing radiation
Assignee: Schneider Europe GmbH
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Filing: 1993-07-01
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Granted: —
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Expires: 2013-07-01
Abstract
Abstract An appliance comprising a catheter 1 in which is centered a guide wire 2, a dilatation balloon 5 mounted coaxially on the catheter, and a radioactive radiation emitter in the form of a filament 4 integrated into the guide wire 2 inside the balloon 5.
Inventors
- 👤 Youri Popowski
- 👤 Vitali Verine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:53
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1002; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1047; A61N2005/1003
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
83 words
A medical appliance for the treatment of a portion of blood vessel by means of ionizing radiation, comprising a catheter for percutaneous transluminal treatment of the blood vessel, an inflatable dilatation balloon surrounding the catheter, a radioactive radiation emitter, and means for advancing, resp. removing, the radioactive radiation emitter into, resp. from, the portion of the blood vessel, characterized by a radioactive radiation emitter (4, 40, 45) essentially centered inside the balloon (5) at the location of dilatation thereof in the blood vessel.
Claim 2
Dependent Claim
70 words
A medical appliance for the treatment of a portion of blood vessel by means of ionizing radiation, comprising a catheter defining a perfusion channel, a radioactive radiation emitter and means for advancing, resp. removing the radioactive radiation emitter into, resp. from, the portion of the blood vessel, characterized by means (5, 14, 23, 30) for essentially centering the emitter (40, 41, 45, 46, 47) in the portion of blood vessel.
Claim 3
Dependent Claim
19 words
A medical appliance according to claim 2, wherein the catheter (10) is surrounded by an inflatable dilatation balloon (5).
Claim 4
Dependent Claim
29 words
A medical appliance according to any preceeding claim, wherein the radioactive radiation emitter (4, 40, 41, 45, 46, 47) is movable within the catheter (1, 10, 11, 13, 24-30).
Claim 5
Dependent Claim
20 words
A medical appliance according to any of claims 1, 3, 4, wherein the balloon (5) is coaxial to the catheter.
Claim 6
Dependent Claim
28 words
A medical appliance according to any of claims 1, 3, 4, 5, wherein the balloon (5) is substantially cylindrical and annularly affixed by its ends to the catheter.
Claim 7
Dependent Claim
36 words
A medical appliance according to any of claims 1, 3, 4, 5, 6, wherein the catheter (10) comprises a perfusion channel connected to openings (8, 9) in the catheter wall before and after the balloon (5).
Claim 8
Dependent Claim
47 words
A medical appliance according to any of claims 2 and 4, wherein the catheter (11) is surrounded by a brush with flexible bristles (14), and wherein an outer tube (18) is mounted in sliding fit on the catheter to enclose and free the bristles of the brush.
Claim 9
Dependent Claim
45 words
A medical appliance according to any of claims 2 and 4, wherein the catheter (13) comprises an inner channel provided with a plurality of lateral apertures (23) regularly spaced around the catheter, and wherein said inner channel is fed by a physiological solution under pressure.
Claim 10
Dependent Claim
20 words
A medical appliance according to any of claims 2 and 4, wherein the catheter comprises a self expandable temporary stent.
Claim 11
Dependent Claim
81 words
A medical appliance according to any of claims 2, 4, 10, wherein the catheter comprises an end piece (24), a tubular conduit (25) at a distance from the end piece, a braided self expandable temporary stent (30) having one end affixed to the tubular conduit (25) and the other end affixed to the end piece (24), and a tube (26) coaxial to and in sliding fit with said tubular conduit (25) for enclosing, resp. freeing, the self expandable temporary stent (30).
Claim 12
Dependent Claim
18 words
A medical appliance according to any preceeding claim, wherein the catheter is a catheter for percutaneous transluminal angioplasty.
Claim 13
Dependent Claim
24 words
A medical appliance according to any preceeding claim, wherein the radioactive radiation emitter (4, 40, 41, 45, 46, 47) is a beta radiation emitter.
Claim 14
Dependent Claim
21 words
A medical appliance according to any preceeding claim, wherein the radioactive radiation emitter (4, 40, 45, 46, 47) is a filament.
Claim 15
Dependent Claim
24 words
A medical appliance according to claim 13 or 14, wherein the radioactive radiation emitter (4, 40, 41, 45, 46, 47) is of 90 Yttrium.
Claim 16
Dependent Claim
33 words
A medical appliance according to claim 13, wherein the radioactive radiation emitter (4, 40, 45, 46, 47) is a filament of 90 Yttrium with a diameter equal to or less than 0.9 mm.
Claim 17
Dependent Claim
29 words
A medical appliance according to claim 13, wherein the radioactive radiation emitter (4, 40, 45, 46, 47) is a filament of 90 Yttrium which is heat elaborated under vacuum.
Claim 18
Dependent Claim
22 words
A medical appliance according to claim 16 or 17, wherein the filament has a diameter equal to or less than 0.2 mm.
Claim 19
Dependent Claim
39 words
A medical appliance according to any preceeding claim, wherein the catheter comprises a guide wire (2) in sliding fit therein, and wherein the radioactive radiation emitter is a filament (4, 40, 45, 46, 47) affixed to said guide wire.
Claim 20
Dependent Claim
41 words
A medical appliance according to any of claims 1 to 18, wherein the catheter comprises a guide wire (2) in sliding fit therein, and wherein the radioactive radiation emitter is a filament (45, 46, 47) coiled around the said guide wire.
Claim 21
Dependent Claim
47 words
A medical appliance according to any of claims 1 to 18, wherein the catheter comprises a guide wire in sliding fit therein, and wherein the radioactive radiation emitter (4, 40, 45, 46, 47) is a filament affixed to a wire intended to replace the said guide wire.
Claim 22
Dependent Claim
44 words
A medical appliance according to any of claims 1 to 18, wherein the catheter comprises a guide wire in sliding fit therein, and wherein the radioactive radiation emitter (45, 46, 47) is a filament coiled around a wire intended to replace the guide wire.
Claim 23
Dependent Claim
25 words
A medical appliance according to any of claims 19 to 22, wherein the radioactive radiation emitter is a filament affixed to a wire of titanium.
Claim 24
Dependent Claim
25 words
A medical appliance according to any of claims 19 to 22, wherein the radioactive radiation emitter is a filament coiled around a wire of titanium.
References Cited (Backward Citations)
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