EP0968688A1
Expired / Lapsed
EP
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Improved vascular filter for controlled release
Assignee: Cordis Europa NV
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Filing: 1999-07-01
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Granted: —
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Expires: 2019-07-01
Abstract
Abstract The present invention relates to a vascular filter which can be placed inside a body cavity, such as a blood vessel. A catheter may be used to deliver the filter, and consists of a tubular basic body with a distal end, a proximal end and a lumen extending between the ends. The vascular filter may be received in a compressed state inside the catheter lumen. The catheter may include an ejection device, which can be used to eject the vascular filter from the distal end of the catheter. Some portion of the vascular filter may tend to push off in a resilient manner against the distal end of the catheter, and the filter preferably includes a brake for acting on the catheter lumen, which tends to slow and control ejection from the catheter.
Inventors
- 👤 Hendrik Gijsbertus Breedveld
- 👤 Gjalt Bosma
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 00:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2/0108; A61F2002/016; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A vascular filter for delivery through a catheter to a desired site in a body vessel for
therapeutic treatment of a patient, comprising: a base member; at least one filter element coupled to the base member, the filter element having a
compressed shape and an expanded shape, and the filter element tending to resiliently expand
from the compressed shape to the expanded shape, such that when the filter element is positioned at the desired site and immersed in a
body fluid flowing past the desired site, the filter element is adapted to filter the body fluid; and at least one brake coupled to the base member, wherein the brake extends radially
outward in a relaxed configuration, and tends to resiliently press radially outward when in a
compressed configuration.
Claim 2
Dependent Claim
16 words
The vascular filter as set forth in claim 1, wherein the filter is integral and unitary.
Claim 3
Dependent Claim
22 words
The vascular filter as set forth in claim 1, wherein at least a portion of the filter has been
made of nitinol.
Claim 4
Dependent Claim
18 words
The vascular filter as set forth in claim 1, wherein said brake is formed as a resilient
loop.
Claim 5
Dependent Claim
165 words
A filter delivery system for delivery and deployment of a vascular fitter through a
catheter to a desired site in a body vessel for therapeutic treatment of a patient, comprising: a catheter having proximal and distal ends, the catheter defining a lumen extending
between the catheter proximal and distal ends; a filter disposed within the catheter lumen in a compressed shape; and an ejection member slidably received within the catheter lumen, the ejection member
being selectively actuable to push the filter out the catheter distal end into the body vessel in the
region of the desired site;
wherein the filter has a filter element tending to resist movement of the filter form the catheter;
in a body fluid flowing past the desired site, the filter element is adapted to filter the body fluid; and wherein the filter has at least one brake tending to resist movement of the filter from
the catheter; thereby controlling the motion of the filter during delivery to the desired site.
Claim 6
Dependent Claim
41 words
The filter delivery system as set forth in claim 5, wherein the brake tends to resiliently
press radially outward against an inner wall of the catheter lumen and includes at least
one projection close to the proximal end of the filter.
Claim 7
Dependent Claim
29 words
The filter delivery system as set forth in claim 6, wherein the projection has been biased
in an outward direction in relation to the filter in the compressed state.
Claim 8
Dependent Claim
24 words
The filter delivery system as set forth in claim 5, wherein at least one additional
projection has been arranged close to the proximal end.
Claim 9
Dependent Claim
27 words
The filter delivery system as set forth in claim 8, wherein the projection and the additional
projection have been arranged on the filter at radially opposite sides.
References Cited (Backward Citations)
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