US6620183B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrombus filter with break-away anchor members
Assignee: Lifescreen Sciences LLC
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Filing: 2001-03-12
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Granted: 2003-09-16
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Expires: 2021-03-12
Abstract
Abstract A thrombus filter which can be securely fixed at a selected location in the vascular system of a patient and removed when no longer required. The thrombus filter includes a body portion and a plurality of struts, each strut having a joined end and a free end. The joined end of each strut is fixably attached to the body portion. The struts radiate outwardly from the body member such that the thrombus filter is generally conical in shape. The free end of each strut includes an anchor member. A weakened portion is disposed proximate the free end of each strut. When removal of the thrombus filter is desired, forces are applied to the thrombus filter causing the struts to break at the weakened portions proximate the free ends. When breaking of the struts has been accomplished, the thrombus filter may be freely pulled into the lumen of the retrieval catheter. Once the thrombus filter is disposed inside the lumen of the retrieval catheter, the removal of the thrombus filter from the body of the patient becomes a simple matter of withdrawing the retrieval catheter from the blood vessel.
Inventors
- 👤 Kristian DiMatteo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:31
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B2017/1205; A61B90/00; A61B90/03; A61B2090/037; A61F2/011; A61F2002/016; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008; A61F2250/00; A61F2250/0058; A61F2250/0071
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
68 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; the filter end of each strut being fixedly attached to the filter end of another strut; each strut including a weakened portion proximate the intimal end of the strut.
Claim 2
Dependent Claim
68 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; the filter end of each strut being fixedly attached to the filter end of another strut; each strut including a weakened portion proximate the intimal end of the strut.
Claim 3
Dependent Claim
77 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; the filter end of each strut being fixedly attached proximate to a position on another strut proximate to the filter end of the other strut; each strut including a weakened portion proximate the intimal end of the strut.
Claim 4
Dependent Claim
77 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; the filter end of each strut being fixedly attached proximate to a position on another strut proximate to the filter end of the other strut; each strut including a weakened portion proximate the intimal end of the strut.
Claim 5
Dependent Claim
69 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a filter lattice; a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; and the filter end of each strut being fixedly attached to the filter lattice; each strut including a weakened portion proximate the intimal end of the strut.
Claim 6
Dependent Claim
69 words
A filter configured for placement within a vessel lumen defined by a vessel wall, comprising: a filter lattice; a plurality of struts designed to be fixedly attached to the vessel wall, wherein each strut comprises a filter end and an intimal end; and the filter end of each strut being fixedly attached to the filter lattice; each strut including a weakened portion proximate the intimal end of the strut.
Claim 7
Dependent Claim
21 words
The filter of claim 1 , 2 or 3 , wherein the intimal end of each strut includes a sharp projection.
Claim 8
Dependent Claim
18 words
The filter of claim 1 , 2 or 3 , wherein each strut is rectangular in cross section.
Claim 9
Dependent Claim
18 words
The thrombus filter of claim 1 , 2 or 3 wherein each strut is circular in cross section.
Claim 10
Dependent Claim
22 words
The filter of claim 1 , 2 or 3 wherein the cross-sectional area of the strut is reduced proximate the weakened portion.
Claim 11
Dependent Claim
17 words
The filter of claim 1 , 2 or 3 , wherein the weakened portion includes a notch.
Claim 12
Dependent Claim
17 words
The filter of claim 1 , 2 or 3 , wherein the weakened portion includes a slot.
Claim 13
Dependent Claim
17 words
The filter of claim 1 , 2 or 3 , wherein the weakened portion includes a hole.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-09-15 | 2007-03-17 | 2007-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-15 | 2011-03-17 | 2011-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-15 | 2015-03-17 | 2015-09-16 | $7700.00 | Window Closed / Lapsed |