Patent US20060235286A1 successfully refreshed from Google Patents.
US6171328B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravascular catheter filter with interlocking petal design and methods of use
Assignee: Edwards Lifesciences Corp
•
Filing: 1999-11-09
•
Granted: 2001-01-09
•
Expires: 2019-11-09
Abstract
Abstract A filter device for temporary placement of a filter in an artery or vein is disclosed. The device includes an expandable filter mounted on a distal end of a catheter. The filter comprises a plurality of circumferentially adjacent porous segments which are arranged generally about the surface of a cone having an open base, and the segments are engaged to one another by means, such as a hook. The filter conforms to the interior of a vessel wall when expanded and contracts to a consistent diameter without bunching when stowed. Methods of using the filter device to entrap and remove embolic material from a vessel during endovascular procedures are also disclosed.
Inventors
- 👤 Bruce Addis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0093
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
A blood filter device, comprising: a catheter having proximal and distal ends; and an expandable filter mounted at the distal end of the catheter, the filter comprising a plurality of circumferentially adjacent porous segments, each segment shaped generally as an equilateral triangle bounded by first and second sides and a base, each of the first and second sides having a hook that engages the circumferentially adjacent segments, wherein the segments are arranged about the surface of a cone having an expandable open base, wherein the filter opens by expanding the open base until the hooks engage adjacent segments, preventing further expansion.
Claim 2
Dependent Claim
101 words
A blood filter device, comprising: a catheter having proximal and distal ends; and an expandable filter mounted at the distal end of the catheter, the filter comprising a plurality of circumferentially adjacent porous segments, each segment shaped generally as an equilateral triangle bounded by first and second sides and a base, each of the first and second sides having a hook that engages the circumferentially adjacent segments, wherein the segments are arranged about the surface of a cone having an expandable open base, wherein the filter opens by expanding the open base until the hooks engage adjacent segments, preventing further expansion.
Claim 3
Dependent Claim
13 words
The device of claim 1 , wherein the filter comprises three porous segments.
Claim 4
Dependent Claim
17 words
The device of claim 1 , wherein each porous segment comprises a material having laser cut pores.
Claim 5
Dependent Claim
15 words
The device of claim 3 , wherein said each porous segment comprises a plastic material.
Claim 6
Dependent Claim
21 words
The device of claim 4 , wherein the plastic material is selected from the groups consisting of polyester and polyvinylidene fluoride.
Claim 7
Dependent Claim
17 words
The device of claim 1 , wherein each side and the base of each segment is linear.
Claim 8
Dependent Claim
23 words
The device of claim 1 , wherein the hook comprises a fold along the edge of each of the first and second sides.
Claim 9
Dependent Claim
19 words
The device of claim 1 , wherein the base of the cone opens proximal a vertex of the cone.
Claim 10
Dependent Claim
17 words
The device of claim 8 , wherein the catheter extends distally beyond the vertex of the cone.
Claim 11
Dependent Claim
29 words
The device of claim 9 , further comprising a distal capture sheath comprising a tubular member having a lumen shaped to receive the filter when the filter is contracted.
Claim 12
Dependent Claim
30 words
The device of claim 9 , further comprising a proximal capture sheath comprising a tubular member having a lumen shaped to receive the conical filter when the filter is contracted.
Claim 13
Dependent Claim
26 words
The device of claim 1 , wherein each segment further comprises an extension bonded to the vertex of the triangle and extending away from the base.
Claim 14
Dependent Claim
14 words
The device of claim 12 , wherein each extension is bonded to the catheter.
Claim 15
Dependent Claim
18 words
The device of claim 1 , wherein the catheter further comprises an atraumatic tip at the distal end.
Claim 16
Dependent Claim
19 words
The device of claim 1 , wherein the base of the cone opens distal a vertex of the cone.
Claim 17
Dependent Claim
14 words
The device of claim 1 , wherein the catheter further comprises an angioplasty balloon.
Claim 18
Dependent Claim
13 words
The device of claim 1 , wherein the catheter further comprises a stent.
Claim 19
Dependent Claim
37 words
The device of claim 1 , wherein the base of each segment is curved, and wherein each segment has the shape of a sector bounded by first and second radii and the included arc of a circle.
Claim 20
Dependent Claim
14 words
The device of claim 18 , wherein the sector includes an arc of 10-120°.
Claim 21
Dependent Claim
105 words
A blood filter device, comprising: a catheter having a proximal and distal ends; and an expandable filter mounted at the distal end of the catheter, the filter comprising a plurality of circumferentially adjacent porous segments, each segment shaped generally as an equilateral triangle bounded by first and second sides and a base, each of the first and second sides having means for engaging the circumferentially adjacent segments, wherein the segments are arranged about the surface of a cone having an expandable open base, wherein the filter opens by expanding the open base until the means for engaging adjacent segments engage adjacent segments, preventing further expansion.
Claim 22
Dependent Claim
105 words
A blood filter device, comprising: a catheter having a proximal and distal ends; and an expandable filter mounted at the distal end of the catheter, the filter comprising a plurality of circumferentially adjacent porous segments, each segment shaped generally as an equilateral triangle bounded by first and second sides and a base, each of the first and second sides having means for engaging the circumferentially adjacent segments, wherein the segments are arranged about the surface of a cone having an expandable open base, wherein the filter opens by expanding the open base until the means for engaging adjacent segments engage adjacent segments, preventing further expansion.
References Cited (Backward Citations)
US5707359A
Cited
US5827324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-09 | 2004-07-10 | 2005-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-09 | 2008-07-10 | 2009-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-09 | 2012-07-10 | 2013-01-09 | $7700.00 | Window Closed / Lapsed |