US6972025B2
Expired / Lapsed
US
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Intravascular filter with bioabsorbable centering element
Assignee: Lifescreen Sciences LLC
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Filing: 2003-11-18
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Granted: 2005-12-06
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Expires: 2023-11-18
Abstract
Abstract Bioabsorbable centering elements for use in centering an implantable intravascular device within a body vessel are disclosed. The bioabsorbable centering element may include a number of support members configured to self-expand and engage the wall of the vessel when deployed. The support members may be formed from a biodegradable material adapted to degrade in vivo within a pre-determined period of time.
Inventors
- 👤 Joel M. WasDyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0103; A61F2002/016; A61F2/82; A61F2/848; A61F2002/8486; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
117 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head, each distal section having a distal end, the plurality of distal ends defining a base; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the centering element including one or more biodegradable support members, the centering element having a first state prior to bioabsorption configured to exert an outwardly directed force on the wall of the body vessel when deployed therein, and a second state subsequent to bioabsorption configured to not exert the outwardly directed force.
Claim 2
Dependent Claim
117 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head, each distal section having a distal end, the plurality of distal ends defining a base; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the centering element including one or more biodegradable support members, the centering element having a first state prior to bioabsorption configured to exert an outwardly directed force on the wall of the body vessel when deployed therein, and a second state subsequent to bioabsorption configured to not exert the outwardly directed force.
Claim 3
Dependent Claim
30 words
The intravascular filter of claim 1 , wherein the bioabsorbable centering element is configured to automatically expand from a collapsed position to an expanded position when deployed in the vessel.
Claim 4
Dependent Claim
24 words
The intravascular filter of claim 1 , wherein the bioabsorbable centering element is configured to degrade in vivo in about 20 to 30 days.
Claim 5
Dependent Claim
24 words
The intravascular filter of claim 1 , wherein the bioabsorbable centering element is configured to degrade in vivo in about 3 to 5 days.
Claim 6
Dependent Claim
17 words
The intravascular filter of claim 1 , further comprising a biodegradable cap coupled to the apical head.
Claim 7
Dependent Claim
18 words
The intravascular filter of claim 5 , wherein the biodegradable support members extend outwardly from the biodegradable cap.
Claim 8
Dependent Claim
24 words
The intravascular filter of claim 1 , wherein the biodegradable support members are coupled to the distal sections of said plurality of filter legs.
Claim 9
Dependent Claim
24 words
The intravascular filter of claim 1 , wherein the biodegradable support members are generally oriented in a direction towards the base of the filter.
Claim 10
Dependent Claim
25 words
The intravascular filter of claim 1 , wherein the biodegradable support members are generally oriented in a direction away from the base of the filter.
Claim 11
Dependent Claim
21 words
The intravascular filter of claim 1 , wherein each biodegradable support member has an elongated shape with a substantially circular cross-section.
Claim 12
Dependent Claim
21 words
The intravascular filter of claim 10 , wherein each biodegradable support member has a bowed or arcuate shape along its length.
Claim 13
Dependent Claim
51 words
The intravascular filter of claim 1 , wherein the biodegradable support members include a biodegradable material selected from the group consisting of polylactic acid, polyglycolic acid, copolymer poly(lactide-co-glycolide), polydioxanone, polyanhydrides, trimethylene carbondate, poly(hydroxybutyrate), poly(g-ethyl glutamate), poly(ortho esters), polycyanoacxylate, polyphosphazenes, poly(a-hydroxy acids), poly(e-caprolactone), polysaccharides, modified proteins, albumin, collagen, gelatin, alginate, and starch.
Claim 14
Dependent Claim
134 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head, each distal section having a distal end, the plurality of distal ends defining a base; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the bioabsorbable centering element including one or more biodegradable support members each having a first end secured to the filter leg, and a second end the centering element having a first state prior to bioabsorption configured to self-expand and exert an outwardly directed force on the wall of the body vessel when deployed therein, and a second state subsequent to bioabsorption configured to not exert the outwardly directed force.
Claim 15
Dependent Claim
134 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head, each distal section having a distal end, the plurality of distal ends defining a base; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the bioabsorbable centering element including one or more biodegradable support members each having a first end secured to the filter leg, and a second end the centering element having a first state prior to bioabsorption configured to self-expand and exert an outwardly directed force on the wall of the body vessel when deployed therein, and a second state subsequent to bioabsorption configured to not exert the outwardly directed force.
Claim 16
Dependent Claim
30 words
The intravascular filter of claim 13 , wherein the bioabsorbable centering element is configured to automatically expand from a collapsed position to an expanded position when deployed in the body.
Claim 17
Dependent Claim
24 words
The intravascular filter of claim 13 , wherein the bioabsorbable centering element is configured to degrade in vivo in about 20 to 30 days.
Claim 18
Dependent Claim
24 words
The intravascular filter of claim 13 , wherein the bioabsorbable centering element is configured to degrade in vivo in about 3 to 5 days.
Claim 19
Dependent Claim
17 words
The intravascular filter of claim 13 , further comprising a biodegradable cap coupled to the apical head.
Claim 20
Dependent Claim
18 words
The intravascular filter of claim 13 , wherein the biodegradable support members extend outwardly from the biodegradable cap.
Claim 21
Dependent Claim
24 words
The intravascular filter of claim 13 , wherein the biodegradable support members are coupled to the distal sections of said plurality of filter legs.
Claim 22
Dependent Claim
24 words
The intravascular filter of claim 13 , wherein the biodegradable support members are generally oriented in a direction towards the base of the filter.
Claim 23
Dependent Claim
25 words
The intravascular filter of claim 13 , wherein the biodegradable support members are generally oriented in a direction away from the base of the filter.
Claim 24
Dependent Claim
21 words
The intravascular filter of claim 13 , wherein each biodegradable support member has an elongated shape with a substantially circular cross-section.
Claim 25
Dependent Claim
21 words
The intravascular filter of claim 22 , wherein each biodegradable support member has a bowed or situate shape along its length.
Claim 26
Dependent Claim
51 words
The intravascular filter of claim 13 , wherein the bioabsorbable support members inclade a biodegradable material selected from the group consisting of polylactic acid, polyglycolic acid, copolymer poly(lactide-co-glycolide), polydioxanone, polyanhydrides, trimethylene carbondate, poly(hydroxybutyrate), poly(g-ethyl glutamate), poly(ortho esters), polycyanoacrylate, polyphosphazenes, poly(a-hydroxy acids), poly(e-caprolactone), polysaceharides, modified proteins, albumin, collagen, gelatin, alginate, and starch.
Claim 27
Dependent Claim
99 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the bioabsorbable centering element including one or more biodegradable support members each having a first end secured to a biodegradable cap disposed about the apical head, and a second end configured to self-expand and exert an outwardly directed force on the wall of the body vessel when deployed therein.
Claim 28
Dependent Claim
99 words
An intravascular filter, comprising: a non-biodegradable apical head; a plurality of non-biodegradable filter legs each having a proximal section and a distal section, the proximal section of each filter leg being secured to the apical head; and a bioabsorbable centering element for centering the intravascular filter within a body vessel, the bioabsorbable centering element including one or more biodegradable support members each having a first end secured to a biodegradable cap disposed about the apical head, and a second end configured to self-expand and exert an outwardly directed force on the wall of the body vessel when deployed therein.
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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) | 2008-12-05 | 2009-06-06 | 2009-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-12-05 | 2013-06-06 | 2013-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-12-05 | 2017-06-06 | 2017-12-06 | $7700.00 | Window Closed / Lapsed |