Patent EP0077686A2 successfully refreshed from Google Patents.
Patent EP0701836A1 successfully refreshed from Google Patents.
EP0701836A1
Expired / Lapsed
EP
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MR-visible catheter
Assignee: Cordis Europa NV
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Filing: 1995-09-15
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Granted: —
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Expires: 2015-09-15
Abstract
Abstract This invention relates to a catheter comprising a tube-like body extruded from a plastic material with a proximal and a distal end and with at least one lumen. The plastic material of which the body of the catheter has been made comprises at least partly a filler of paramagnetic material. As a result the position of the catheter inside the body of a patient can be made visible on an NMR screen.
Inventors
- 👤 Jan Weber
- 👤 Wilhelmus P. M. M. Van Erp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:09
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0127; A61B; A61B90/00; A61B90/39; A61B2090/3954
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
44 words
Catheter comprising a tube-like body extruded from a plastic material with a proximal and a distal end and with at least one lumen, wherein at least part of the plastic material of which the body has been made comprises a filler of paramagnetic material.
Claim 2
Dependent Claim
31 words
Catheter as claimed in claim 1, wherein the tube-like body comprises a number of coaxial layers and the plastic material comprising the paramagnetic material forms at least one of the layers.
Claim 3
Dependent Claim
25 words
Catheter as claimed in claim 2, wherein the at least one layer comprising paramagnetic material is provided in the form of a helically extending band.
Claim 4
Dependent Claim
29 words
Catheter as claimed in claim 1 or 2, wherein at least one layer comprising paramagnetic material is provided in the form of a number of spaced apart circular bands.
Claim 5
Dependent Claim
28 words
Catheter as claimed in claim 3, wherein the plastic material comprising the paramagnetic material forms at least one strip extending in the longitudinal direction of the tube-like body.
Claim 6
Dependent Claim
34 words
Catheter according to any of the preceding claims, wherein the paramagnetic material is harmful to man and the plastic material comprising this material has been received in an enclosed manner in the tube-like body.
Claim 7
Dependent Claim
27 words
Catheter as claimed in one of the claims 2 and 6, wherein the layer of paramagnetic material is an intermediate layer of at least three coaxial layers.
Claim 8
Dependent Claim
35 words
Catheter as claimed in one of the claims 6 - 7, wherein the amount of plastic material comprising paramagnetic material reduces from the proximal towards the distal end, close to the distal end, to zero.
Claim 9
Dependent Claim
27 words
Catheter as claimed in one of the claims 6 - 8, comprising at the distal end an end-section made of a plastic material free of paramagnetic material.
Claim 10
Dependent Claim
22 words
Catheter as claimed in one of the previous claims, comprising at least one section made of material visible when subjected to X-rays.
Claim 11
Dependent Claim
39 words
Catheter as claimed in claim 10, wherein the material visible when subjected to X-rays is received by way of a filler in a layer of plastic material of the body, which layer also comprises a filler of paramagnetic material.
Claim 12
Dependent Claim
36 words
Catheter as claimed in one of the previous claims, wherein the paramagnetic material has been chosen from the group comprising transition metals such as copper, manganese, chromium, nickel, gadolinium, dysprosium and mixtures, alloys and salts thereof.
Claim 13
Dependent Claim
25 words
Catheter as claimed in claim 10, wherein the material visible when subjected to X-rays has been chosen from the group of barium- and bismuth salts.
References Cited (Backward Citations)
US4827931A
Cited
US5154179A
Cited
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