EP0205851B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter
Assignee: Individual
•
Filing: 1986-05-07
•
Granted: 1990-02-28
•
Expires: 2006-05-07
Abstract
Abstract 1. A catheter comprising at least one lumen, closed at the front end (3), for the local treatment of internal body structures, in particular stenoses, comprising at least one opening (11) in the catheter wall (7) which is arranged in a treatment section (B) at the front end (3) and which extends from the lumen (12) to the outer wall of the catheter (1), characterised in that an extendable and expandable part (8, 15) of the catheter (1) is arranged in the treatment section (B) of the catheter end (3), at least one electrically conductive zone which forms part of the extension of this part (8, 15) of the catheter being arranged on the outer surface of this part of the catheter, or this part (8, 15) of the catheter itself being electrically conductive in at least one zone.
Inventors
- 👤 Max Dr. Hubmann
- 👤 Roger Prof. Dr.-Ing. Thull
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61M16/00; A61M16/04; A61M16/0475; A61M16/0477; A61M16/0481; A61B17/00; A61B17/22; A61B18/1402; A61B17/00234; A61B2017/00292; A61B2018/00053; A61B2018/00059; A61B2018/00089; A61B2018/00101; A61B90/00; A61B90/39; A61M2025/1043; A61M2025/1075; A61M2205/00; A61M2205/32; A61M3/00; A61M3/02; A61M3/0279
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
138 words
A catheter comprising at least one lumen, closed at the front end (3), for the local treatment of internal body structures, in particular stenoses, comprising at least one opening (11) in the catheter wall (7) which is arranged in a treatment section (B) at the front end (3) and which extends from the lumen (12) to the outer wall of the catheter (1), characterised in that an extendable and expandable part (8, 15) of the catheter (1) is arranged in the treatment section (B) of the catheter end (3), at least one electrically conductive zone which forms part of the extension of this part (8, 15) of the catheter being arranged on the outer surface of this part of the catheter, or this part (8, 15) of the catheter itself being electrically conductive in at least one zone.
Claim 2
Dependent Claim
138 words
A catheter comprising at least one lumen, closed at the front end (3), for the local treatment of internal body structures, in particular stenoses, comprising at least one opening (11) in the catheter wall (7) which is arranged in a treatment section (B) at the front end (3) and which extends from the lumen (12) to the outer wall of the catheter (1), characterised in that an extendable and expandable part (8, 15) of the catheter (1) is arranged in the treatment section (B) of the catheter end (3), at least one electrically conductive zone which forms part of the extension of this part (8, 15) of the catheter being arranged on the outer surface of this part of the catheter, or this part (8, 15) of the catheter itself being electrically conductive in at least one zone.
Claim 3
Dependent Claim
26 words
A catheter as claimed in claim 1, characterised in that the electrically conductive zone is in the form of an electrically conductive coating (9, 109, 209).
Claim 4
Dependent Claim
37 words
A catheter as claimed in claim 1, characterised in that the electrically conductive zone is arranged on an elastic sleeve (15) which at least partially coaxially surrounds the catheter (1) and has at least one opening (14).
Claim 5
Dependent Claim
21 words
A catheter as claimed in claim 3, characterised in that the elastic sleeve (15) consists of a poor heat conducting material.
Claim 6
Dependent Claim
22 words
A catheter as claimed in claim 3 or claim 4, characterised in that the elastic sleeve (15) consists of electrically conductive material.
Claim 7
Dependent Claim
37 words
A catheter as claimed in claim 1 or claim 2, characterised in that the electrically conductive zone (9, 109, 209) is arranged on an inflatable balloon (8) which surrounds the catheter (1) in the treatment section (B).
Claim 8
Dependent Claim
50 words
A catheter as claimed in claim 6, characterised in that the balloon (8) which can be expanded by a pressure means and which is arranged in the treatment section (B) is provided with at least one opening (14) in the balloon wall (13) for the outlet of the pressure means.
Claim 9
Dependent Claim
54 words
A catheter as claimed in claim 6 or claim 7, characterised in that in the region of the balloon (8) the catheter wall (7) has one or more opening(s) (11) whose cross-section or overall cross-section is greater than the cross-section or overall cross-section of the opening or openings (14) in the balloon wall (13).
Claim 10
Dependent Claim
56 words
A catheter as claimed in one of the claims 1 to 8, characterised in that an electrical supply line (16, 116, 216) from the rear end of the catheter to the electrically conductive zone (9, 109, 209, is arranged on the catheter (1), in the lumen of the catheter (1) or in the catheter wall (7).
Claim 11
Dependent Claim
53 words
A catheter as claimed in claim 9, characterised in that when the supply line (16, 116, 216) is arranged on the exterior of the catheter (1), the catheter is provided with an external insulating coating (19) at least in the area in which it is concerted to the conductive coating (9, 109, 209).
Claim 12
Dependent Claim
23 words
A catheter as claimed in claim 9 or claim 10, characterised in that the supply line (16, 116, 216) is a coaxial line.
Claim 13
Dependent Claim
47 words
A catheter as claimed in one of the claims 9 to 11, characterised in that at least one inner supply line (16, 116, 216) is electrically conductively connected to the electrically conductive coating (9, 109, 209) via conductive, in particular metallised, bore walls of the openings (14).
Claim 14
Dependent Claim
54 words
A catheter as claimed in one of the claims 9 to 12, characterised in that the or an inner supply line (16, 116, 216) extends to the front end (3) of the catheter (1) from where, with external insulation, it is fed back and electrically conductively connected to the conductive coating (9, 109, 209).
Claim 15
Dependent Claim
48 words
A catheter as claimed in one of the claims 9 to 13, characterised in that axially in series two conductive coatings (109, 209) arranged at a distance (L) from one another form a bipolar arrangement and each is electrically conductively connected to a separate supply line (116, 216).
Claim 16
Dependent Claim
31 words
A catheter as claimed in one of the claims 1 to 14, characterised in that the front end (3) of the catheter (1) is closed by an electrically conductive insert (4).
Claim 17
Dependent Claim
33 words
A catheter as claimed in claim 15, characterised in that the insert (4) is electrically conductively connected both to a supply line (16, 216) and to the or a conductive coating (9, 209).
Claim 18
Dependent Claim
36 words
A catheter as claimed in one of the claims 14 to 16, characterised in that the axial length of each conductive coating (109, 209) corresponds approximately to the distance (L) between the adjacent coatings (109, 209).
Claim 19
Dependent Claim
38 words
A catheter as claimed in one of the claims 6 to 17, characterised in that an intermediate layer (20) composed of dielectric material is arranged between the inflatable balloon (8) and the electrically conductive coating (9, 109, 209).
Claim 20
Dependent Claim
18 words
A catheter as claimed in claim 18, characterised in that the intermediate layer (20) consists of magnesium fluoride.
References Cited (Backward Citations)
No citation records indexed.
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