US6371970B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular filter having articulation region and methods of use in the ascending aorta
Assignee: Incept LLC
•
Filing: 1999-12-23
•
Granted: 2002-04-16
•
Expires: 2019-12-23
Abstract
Abstract Apparatus and methods are provided for use in filtering emboli from a vessel such as the ascending aorta, wherein a vascular device comprises a support hoop having an articulation region connected near a distal end of an elongated member, a blood permeable sac affixed to the support hoop so that the support hoop forms a mouth of the blood permeable sac, a guide wire, and a delivery sheath. The articulation region comprises a reduced thickness region of the support hoop that prevents kinks from forming in the support hoop when the apparatus is contracted to its delivery state, and curved regions that close the mouth of the sac to prevent material escaping from the sac when the apparatus is collapsed for removal.
Inventors
- 👤 Farhad Khosravi
- 👤 L. N. Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:16
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2/011; A61F2/013; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0063; A61F2230/0073; A61F2230/008; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09175; A61M2025/09183; A61M25/10; A61M2025/1043; A61M2025/1052; A61M2025/109
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
95 words
Apparatus suitable for filtering emboli comprising: an elongated member having a distal region; a support hoop attached to the distal region, the support hoop having an articulation region; and a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac; a guide wire slidably attached to the elongated member; and a delivery sheath having a proximally-facing cavity for accepting the elongated member, support hoop and blood permeable sac, and a lumen extending through the cavity to permit the guide wire to pass therethrough.
Claim 2
Dependent Claim
95 words
Apparatus suitable for filtering emboli comprising: an elongated member having a distal region; a support hoop attached to the distal region, the support hoop having an articulation region; and a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac; a guide wire slidably attached to the elongated member; and a delivery sheath having a proximally-facing cavity for accepting the elongated member, support hoop and blood permeable sac, and a lumen extending through the cavity to permit the guide wire to pass therethrough.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 , wherein the blood permeable sac comprises a biocompatible material.
Claim 4
Dependent Claim
25 words
The apparatus of claim 2 , wherein the biocompatible material comprises a material chosen from a list consisting of polyethylene, polypropylene, polyester, polyurethane and nylon.
Claim 5
Dependent Claim
34 words
The apparatus of claim 3 , wherein the blood permeable sac comprises a plurality of pores, each one of the plurality of pores having a diameter in a range of 20 to 400 microns.
Claim 6
Dependent Claim
14 words
The apparatus of claim 1 , wherein the support hoop comprises a super-elastic material.
Claim 7
Dependent Claim
26 words
The apparatus of claim 1 , wherein the support hoop comprises a wire having a thickness that tapers to a minimum thickness at the articulation region.
Claim 8
Dependent Claim
31 words
The apparatus of claim 1 wherein the elongated member abuts against an interior surface of the cavity so that distal translation of the elongated member is transmitted to the delivery sheath.
Claim 9
Dependent Claim
53 words
The apparatus of claim 1 , wherein the apparatus has a deployed state, wherein the support hoop engages an interior wall of a patient's vessel, and a delivery state, wherein the apparatus has a contracted configuration to permit insertion of the elongated member, support hoop, and blood permeable sac within the delivery sheath.
Claim 10
Dependent Claim
24 words
The apparatus of claim 8 , wherein the support hoop folds at the articulation region when the apparatus is contracted to the delivery state.
Claim 11
Dependent Claim
34 words
The apparatus of claim 8 , wherein the mouth of the blood permeable sac is closed when the apparatus is in the contracted configuration, thereby preventing emboli from escaping from the blood permeable sac.
Claim 12
Dependent Claim
25 words
The apparatus of claim 10 wherein opposite sides of the support hoop close towards one another when the apparatus is contracted to its contracted configuration.
Claim 13
Dependent Claim
15 words
The apparatus of claim 1 , wherein the delivery sheath further comprises a radiopaque band.
Claim 14
Dependent Claim
15 words
The apparatus of claim 1 , wherein the support hoop further comprises a radiopaque band.
Claim 15
Independent Claim
175 words
A method of trapping emboli or thrombus during a medical procedure, the method comprising: providing apparatus comprising an elongated member, a support hoop having an articulation region coupled to the elongated member, a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac, a guide wire slidably attached to the elongated member having a distal region with a stop, and a delivery sheath having a cavity for accepting the elongated member, support hoop and blood permeable sac; advancing the guide wire to a desired location within a patient's vessel; positioning the elongated member, support hoop, and blood permeable sac in a contracted delivery state within the delivery sheath; advancing the elongated member and delivery sheath over the guide wire until the delivery sheath contacts the stop; and with the guide wire held stationary, withdrawing the elongated member to withdraw the support hoop from the cavity so that the apparatus expands to a deployed state wherein the support hoop seals against the vessel wall.
Claim 16
Independent Claim
175 words
A method of trapping emboli or thrombus during a medical procedure, the method comprising: providing apparatus comprising an elongated member, a support hoop having an articulation region coupled to the elongated member, a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac, a guide wire slidably attached to the elongated member having a distal region with a stop, and a delivery sheath having a cavity for accepting the elongated member, support hoop and blood permeable sac; advancing the guide wire to a desired location within a patient's vessel; positioning the elongated member, support hoop, and blood permeable sac in a contracted delivery state within the delivery sheath; advancing the elongated member and delivery sheath over the guide wire until the delivery sheath contacts the stop; and with the guide wire held stationary, withdrawing the elongated member to withdraw the support hoop from the cavity so that the apparatus expands to a deployed state wherein the support hoop seals against the vessel wall.
Claim 17
Dependent Claim
53 words
The method of claim 14 further comprising: performing the medical procedure, the apparatus catching emboli released when the medical procedure is performed; advancing the elongated member over the guide wire to return the apparatus to a collapsed configuration within the cavity of the delivery sheath; and removing the apparatus from the patient's vessel.
Claim 18
Dependent Claim
50 words
The method of claim 14 , wherein advancing the elongated member and delivery sheath further comprises advancing the elongated member and delivery sheath to a location within the patient's ascending aorta proximal of the aortic valve, so that the apparatus is distal of the brachiocephalic trunk in the deployed state.
Claim 19
Dependent Claim
32 words
The method of claim 14 wherein advancing the elongated member and delivery sheath further comprises advancing the elongated member and delivery sheath against a direction of blood flow through the patient's vessel.
Claim 20
Dependent Claim
37 words
The method of claim 15 , wherein returning the apparatus to a collapsed configuration within the delivery sheath channel comprises folding the support hoop at the articulation region to close the mouth of the blood permeable sac.
Claim 21
Dependent Claim
79 words
Apparatus suitable for filtering emboli comprising: an elongated member having a distal region; a support hoop attached to the distal region, the support hoop having an articulation region; a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac; a guide wire slidably attached to the elongated member; and a delivery sheath having a proximally-facing cavity for accepting the elongated member, support hoop and blood permeable sac.
Claim 22
Dependent Claim
79 words
Apparatus suitable for filtering emboli comprising: an elongated member having a distal region; a support hoop attached to the distal region, the support hoop having an articulation region; a blood permeable sac affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac; a guide wire slidably attached to the elongated member; and a delivery sheath having a proximally-facing cavity for accepting the elongated member, support hoop and blood permeable sac.
Claim 23
Dependent Claim
21 words
The apparatus of claim 19 further comprising a lumen extending through the cavity to permit the guide wire to pass therethrough.
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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) | 2005-04-15 | 2005-10-15 | 2006-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-15 | 2009-10-15 | 2010-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-15 | 2013-10-15 | 2014-04-16 | $7700.00 | Window Closed / Lapsed |