EP0813894B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Medical appliances for the treatment of blood vessels by means of ionizing radiation
Assignee: Schneider Europe GmbH
•
Filing: 1993-07-01
•
Granted: 2001-12-05
•
Expires: 2013-07-01
Abstract
Abstract An appliance comprising a catheter 11 in which is centered a guide wire 21 and a radioactive radiation emitter in the form of seeds 41 integrated into the guide wire. Flexible bristles 14 mounted coaxially on the catheter are centering the catheter 11 into a blood vessel 7.
Inventors
- 👤 Youri Med. Dr. Popowski
- 👤 Vitali Med. Dr. Verine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
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: 19
Claim 1
Independent Claim
98 words
A medical appliance for the treatment of a portion of blood vessel (7) by means of
ionizing radiation, comprising a catheter (11,13,24-30), a radioactive radiation emitter
(41,46,47), means for advancing, resp. removing the radioactive radiation emitter into,
resp. from, the portion of the blood vessel, characterized by a plurality of centering means (14,23,30) distributed along the catheter in
correspondence of the emitter for radially centering said emitter in said blood vessel to
ensure equal radial distance to the vessel wall, said centering means forming a perfusion
channel between the catheter and the vessel wall permitting blood flow therethrough.
Claim 2
Dependent Claim
23 words
A medical appliance according to claim 1, wherein the
radioactive radiation emitter (41, 46, 47) is movable within
the catheter (11, 13, 24-30).
Claim 3
Dependent Claim
46 words
A medical appliance according to any preceding claim,
wherein said centering means comprise a brush with flexible
bristles (14) surrounding said catheter (11), and wherein an
outer tube (18) is mounted in sliding fit on the catheter to
enclose and free the bristles of the brush.
Claim 4
Dependent Claim
51 words
A medical appliance according to any of claims 1 or 2,
wherein said centering: means comprise an inner channel in said
catheter, said channel being 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 5
Dependent Claim
21 words
A medical appliance according to any of claims 1 or 2,
wherein said centering means comprise a self expandable
temporary stent.
Claim 6
Dependent Claim
82 words
A medical appliance according to any of claims 1, 2 or
5, 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 7
Dependent Claim
18 words
A medical appliance according to any preceding claim,
wherein the catheter is a catheter for percutaneous
transluminal angioplasty.
Claim 8
Dependent Claim
24 words
A medical appliance according to any preceding claim,
wherein the radioactive radiation emitter (4, 40, 41, 45, 46,
47) is a beta radiation emitter.
Claim 9
Dependent Claim
21 words
A medical appliance according to any preceding claim,
wherein the radioactive radiation emitter (4, 40, 45, 46, 47)
is a filament.
Claim 10
Dependent Claim
24 words
A medical appliance according to claim 8 or 9, wherein
the radioactive radiation emitter (4, 40, 41, 45, 46, 47) is
of 90 Yttrium.
Claim 11
Dependent Claim
33 words
A medical appliance according to claim 8, 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 12
Dependent Claim
29 words
A medical appliance according to claim 8, wherein the
radioactive radiation emitter (4, 40, 45, 46, 47) is a
filament of 90 Yttrium which is heat elaborated under vacuum.
Claim 13
Dependent Claim
22 words
A medical appliance according to claim 11 or 12, wherein
the filament has a diameter equal to or less than 0.2 mm.
Claim 14
Dependent Claim
39 words
A medical appliance according to any preceding 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 15
Dependent Claim
41 words
A medical appliance according to any of claims 1 to 13,
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 16
Dependent Claim
47 words
A medical appliance according to any of claims 1 to 13,
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 17
Dependent Claim
44 words
A medical appliance according to any of claims 1 to 13,
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 18
Dependent Claim
25 words
A medical appliance according to any of claims 14 to 17,
wherein the radioactive radiation emitter is a filament
affixed to a wire of titanium.
Claim 19
Dependent Claim
25 words
A medical appliance according to any of claims 14 to 17,
wherein the radioactive radiation emitter is a filament coiled
around a wire of titanium.
References Cited (Backward Citations)
US5176638A
Cited
WO1993004735A1
Cited
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