US6099549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular filter for controlled release
Assignee: Cordis US Corp
•
Filing: 1999-06-11
•
Granted: 2000-08-08
•
Expires: 2019-06-11
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
- 👤 Gjalt Bosma
- 👤 Hendrik G. Breedveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
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: 11
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
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 3
Dependent Claim
16 words
The vascular filter as set forth in claim 1, wherein the filter is integral and unitary.
Claim 4
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 5
Dependent Claim
18 words
The vascular filter as set forth in claim 1, wherein said brake is formed as a resilient loop.
Claim 6
Dependent Claim
165 words
A filter delivery system for delivery and deployment of a vascular filter 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 7
Dependent Claim
165 words
A filter delivery system for delivery and deployment of a vascular filter 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 8
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 9
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 10
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 11
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)
EP0165713A1
Cited
US4957501A
Cited
EP0348295A1
Cited
EP0350043A1
Cited
DE4030998A1
Cited
US5531788A
Cited
US5234458A
Cited
WO1992014408A1
Cited
US5413586A
Cited
US5350398A
Cited
WO1994006502A2
Cited
US5709704A
Cited
DE19509464C1
Cited
EP0815803A1
Cited
WO1998002112A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-08 | 2004-02-07 | 2004-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-08 | 2008-02-07 | 2008-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-08 | 2012-02-07 | 2012-08-08 | $7700.00 | Window Closed / Lapsed |