US5108418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device implanted in a vessel with lateral legs provided with antagonistically oriented teeth
Assignee: Individual
•
Filing: 1990-10-10
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Granted: 1992-04-28
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Expires: 2010-10-10
Abstract
Abstract This invention relates to a device adapted to be implanted in a vessel, for example a filter for retaining blood clots in a vein, which comprises lateral legs abutting on the wall of the vessel. According to the invention, each leg, whose end is not sharp, is provided with at least two teeth with antagonistic inclination. They are preferably placed towards the rounded end of the leg and have divergent directions. The tooth is for example obtained by cutting out and pushing a median part of the leg, and possibly by subsequent bending thereof. The angle made by the end part of the tooth with respect to the plane of the leg is included between 0 and 30°; the tip of the tooth is at a distance of between 0.8 and 2 mm from the leg.
Inventors
- 👤 Jean-Marie Lefebvre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:21
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2002/016; A61F2002/018; A61F2/82; A61F2/848; A61F2002/8483; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
Claim 2
Dependent Claim
60 words
A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
Claim 3
Dependent Claim
24 words
The device of claim 1 wherein the two teeth of the hooking means are in the vicinity of each other and have divergent directions.
Claim 4
Dependent Claim
56 words
The device of claim 1 or claim 2, wherein a free end of each said tooth of the hooking means presents a inclination with respect to the leg of at the most 30° and a tip of the free end of the tooth is at a distance of between 0.8 and 2 mm from the leg.
Claim 5
Dependent Claim
25 words
The device of claim 3, wherein the tooth is of a curved or bent portion fast with the leg presenting an inclination greater than 30°.
Claim 6
Dependent Claim
25 words
The device of claim 4, wherein the inclination of the bend portion of the tooth fast with the leg is between 45° and 20 .
Claim 7
Dependent Claim
33 words
The device of claim 1, wherein, each leg being a flat metal rod, the teeth of the hooking means are obtained by cutting out from the leg and pushing in the median part.
Claim 8
Dependent Claim
36 words
The device of claim 1, wherein each leg is provided with two teeth shaped as two triangles whose parallel bases, fast with the leg, are spaced apart by a distance of between 2 and 10 mm.
References Cited (Backward Citations)
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US3952747A
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Cited
US4688553A
Cited
US4817600A
Cited
US4990156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |