EP0437121B1
Expired / Lapsed
EP
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Filter-catheter combination
Assignee: Lefebvre Jean-Marie
•
Filing: 1990-11-07
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Granted: 1997-08-20
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Expires: 2010-11-07
Abstract
Abstract A filter-catheter consists of outer (2) and inner (3) flexible tubes, e.g. oil PTFE, with the duct between them linked to the filter, which is formed from a series of lengthwise strips (6) separated by slits (5). The proximal end of the catheter has a coupling unit (10) which is linked to the duct between the catheter tube and has a seal (14) through which the inner tube can slide. The filter can be varied by sliding the inner tube of the catheter relative to the outer one, causing the strips (6) to bulge and increase the size of the gaps between them.
Inventors
- 👤 Jean-Marie Lefebvre
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; A; A61; A61F; A61F2/00; A61F2/01; A61F2/0108; A61F2/011; A61M; A61M25/00; A61M25/0067; A61M25/0082; B29C61/00; B29C61/06; B29C61/0608; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/114; B29C66/118; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5324; B29C66/53241; B29C66/61; B29C66/612; B29C66/70; B29C66/71; B29C71/00; B29C71/02; A61B; A61B17/00; A61B17/22; A61B2017/22038; A61B90/00; A61B90/39; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008; A61F2002/30092; A61F2002/30108; A61F2002/30199; A61F2002/30289; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/3037; A61F2002/30451; A61F2002/30535; A61F2002/30589; A61F2002/30617; A61F2002/30667; A61F2002/30677; A61F2210/00; A61F2210/0014; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0058; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0091; A61F2250/00; A61F2250/0058; A61F2250/0067; A61F2250/0069; A61F2250/0096; A61F2250/0097; A61F2250/0098; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00035; A61F2310/00155; A61M25/0068; A61M25/0074; A61M25/008; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0855; B29C53/00; B29C53/14; B29C66/534; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29L; B29L2031/00; B29L2031/753; B29L2031/7542; B29L2031/772; B29L2031/7732
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
Filter for the partial and at least temporary interruption of a vein which includes: a. a pipe (2) having towards its distal end longitudinal scores distributed symmetrically around its periphery and defining flexible strips (6); b. and a conduit (3) within the pipe, the pipe (2) and the conduit (3) being firmly attached by their distal ends (2 a , 3 a ), the distal end of the filter being provided with a radio-opaque organ; characterised by the fact that the pipe (2) and the internal conduit are made of polytetrafluoroethylene, the distal ends (2 a , 3 a ) of the pipe (2) and the conduit (3) being thermowelded and by the fact that the radio-opaque organ includes a ring (4), in a radio-opaque material which is contained between the distal ends (2 a , 3 a ) of the pipe (2) and the conduit (3) and attached to these during the thermowelding.
Claim 2
Dependent Claim
53 words
Filter as described in claim 1, characterised by the fact that the distal end (2 a ) of the pipe is bent towards the inside of the conduit (3) and covers on the one hand the ring (4) and on the other hand the distal end (3 a ) of the conduit (3).
Claim 3
Dependent Claim
30 words
Filter as described in claim 1, characterised by the fact that the distal end (3 a ) of the internal conduit (3) is flared outwardly beyond the metal ring (4).
Claim 4
Dependent Claim
24 words
Filter as described in claim 1, characterised by the fact that the conduit (3) has orifices in the zone situated opposite the strips (6).
Claim 5
Dependent Claim
33 words
Filter as described in claim 1, characterised by the fact that, the distal part of the said filter having undergone a thermofixing treatment, the flexible strips (6) have an enhanced resistance to deformation.
Claim 6
Dependent Claim
41 words
Filter as described in claim 5, characterised by the fact that, the thermofixing treatment having been performed while the strips (6) were in the deployed state, the polytetrafluoroethylene forming the flexible strips (6) retains the memory of the said deployed shape.
Claim 7
Dependent Claim
45 words
Filter as described in one of claims 5 or 6, characterised by the fact that, the thermofixing treatment having been performed while the strips (6) were twisted in a helix, the polytetrafluoroethylene forming the flexible strips (6) retains the memory of the said helical shape.
References Cited (Backward Citations)
No citation records indexed.
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