US6142987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guided filter with support wire and methods of use
Assignee: Boston Scientific Scimed Inc
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Filing: 1999-08-03
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Granted: 2000-11-07
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Expires: 2019-08-03
Abstract
Abstract A guided filter system for temporary placement of a filter in an artery or vein is disclosed. The system includes a guidewire slideable through a wire guide included in a distal region of a support wire. The support wire has an expandable filter, which is operable between a collapsed or enlarged condition. A variety of endovascular devices, including angioplasty, atherectomy, and stent-deployment catheters, are insertable over the guidewire and/or the support wire. Methods of using the guided filter system to direct and exchange endovascular devices to a region of interest, and to entrap and remove embolic material from the vessel are also disclosed.
Inventors
- 👤 Ross S. Tsugita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:49
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2/013; A61F2/95; A61F2/958; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008; A61M2025/0183; A61M2025/09175; A61M2025/09183; A61M25/10; A61M25/104
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
101 words
A method for deploying a percutaneous medical instrument, comprising the steps of: providing a guidewire and a support wire, the support wire having a distal region, a wire guide mounted on the distal region, and an expandable filter mounted on the distal region; advancing the guidewire into a region of interest within a vessel; advancing the support wire along the guidewire with the wire guide of the support wire engaging the guidewire; expanding the filter downstream of the region of interest; and advancing the percutaneous medical instrument over the support wire and positioning the medical instrument within the region of interest.
Claim 2
Independent Claim
101 words
A method for deploying a percutaneous medical instrument, comprising the steps of: providing a guidewire and a support wire, the support wire having a distal region, a wire guide mounted on the distal region, and an expandable filter mounted on the distal region; advancing the guidewire into a region of interest within a vessel; advancing the support wire along the guidewire with the wire guide of the support wire engaging the guidewire; expanding the filter downstream of the region of interest; and advancing the percutaneous medical instrument over the support wire and positioning the medical instrument within the region of interest.
Claim 3
Dependent Claim
16 words
The method of claim 1, further comprising the step of removing the guidewire from the vessel.
Claim 4
Dependent Claim
15 words
The method of claim 1, wherein the region of interest is within a coronary artery.
Claim 5
Dependent Claim
15 words
The method of claim 1, wherein the region of interest is within a carotid artery.
Claim 6
Dependent Claim
13 words
The method of claim 1, wherein the region of interest contains atheromatous plaque.
Claim 7
Dependent Claim
20 words
The method of claim 1, wherein the wire guide comprises a ring having an aperture adapted to receive the guidewire.
Claim 8
Dependent Claim
15 words
The method of claim 1, wherein the percutanous medical instrument is an angioplasty balloon catheter.
Claim 9
Dependent Claim
14 words
The method of claim 1, wherein the percutanous medical instrument is a stent-deployment catheter.
Claim 10
Dependent Claim
17 words
The method of claim 8, wherein the stent-deployment catheter comprises a sheath disposed about a self-expanding stent.
Claim 11
Dependent Claim
14 words
The method of claim 1, wherein the percutanous medical instrument is an atherectomy catheter.
Claim 12
Dependent Claim
14 words
The method of claim 1, wherein the percutanous medical instrument is an aspiration catheter.
Claim 13
Dependent Claim
27 words
The method of claim 7, further comprising the step of inflating the angioplasty balloon at the region of interest, wherein embolic material is captured by the filter.
Claim 14
Dependent Claim
26 words
The method of claim 8, further comprising the step of expanding the stent at the region of interest, wherein embolic material is captured by the filter.
Claim 15
Dependent Claim
21 words
The method of claim 1, further comprising the step of: contracting the filter; and removing the support wire from the vessel.
Claim 16
Dependent Claim
18 words
The method of claim 1, further comprising the step of removing the percutaneous medical instrument from the vessel.
Claim 17
Dependent Claim
21 words
The method of claim 1, wherein the expandable filter comprises a plurality of struts and a mesh disposed about the struts.
Claim 18
Dependent Claim
15 words
The method of claim 1, wherein the filter expands to the shape of an eggbeater.
Claim 19
Dependent Claim
17 words
The method of claim 1, further comprising the step of exchanging one percutanous medical instrument for another.
Claim 20
Dependent Claim
93 words
A percutaneous filter system, comprising: a guidewire; a support wire having a proximal end, a distal end, and a distal region, the support wire adapted to receive a percutaneous medical instrument; an expandable filter mounted on the distal region of the support wire; and a wire guide mounted on the distal region of the support wire and slideably engaging the guidewire, wherein, during use, the guidewire is positioned in a vessel at a region of interest, and the support wire is advanced along the guidewire until the filter reaches the region of interest.
Claim 21
Dependent Claim
93 words
A percutaneous filter system, comprising: a guidewire; a support wire having a proximal end, a distal end, and a distal region, the support wire adapted to receive a percutaneous medical instrument; an expandable filter mounted on the distal region of the support wire; and a wire guide mounted on the distal region of the support wire and slideably engaging the guidewire, wherein, during use, the guidewire is positioned in a vessel at a region of interest, and the support wire is advanced along the guidewire until the filter reaches the region of interest.
Claim 22
Dependent Claim
12 words
The system of claim 19, wherein the expandable filter is manually activated.
Claim 23
Dependent Claim
11 words
The system of claim 19, wherein the expandable filter is selfactivating.
Claim 24
Dependent Claim
20 words
The system of claim 19, wherein the wire guide comprises a ring having an aperture adapted to receive the guidewire.
Claim 25
Dependent Claim
21 words
The system of claim 19, wherein the expandable filter comprises a plurality of struts and a mesh disposed about the struts.
Claim 26
Dependent Claim
10 words
The system of claim 23, wherein the mesh is woven.
Claim 27
Dependent Claim
18 words
The system of claim 23, wherein the mesh is a thin film having holes to allow fluid flow.
Claim 28
Dependent Claim
15 words
The system of claim 19, wherein the filter expands to the shape of an eggbeater.
Claim 29
Dependent Claim
33 words
The system of claim 19, further comprising a percutaneous medical instrument selected from the group consisting of an angioplasty catheter, a stent-deployment catheter, an atherectomy catheter, intravascular ultrasound catheter, and an aspiration catheter.
Claim 30
Dependent Claim
17 words
The system of claim 27, wherein the stent-deployment catheter comprises a sheath disposed about a self-expanding stent.
Claim 31
Dependent Claim
18 words
The method of claim 1, wherein the wire guide is mounted on the support wire within the filter.
Claim 32
Dependent Claim
18 words
The method of claim 1, wherein the wire guide is mounted on the support wire distal the filter.
Claim 33
Dependent Claim
128 words
A percutaneous filter system, comprising: a guidewire; a support wire having a proximal end, a distal end, a distal region, and an expandable filter mounted on the distal region of the support wire, the support wire adapted to receive a percutaneous medical instrument; and a sheath which removeably covers the support wire and filter, the sheath having a proximal end, a distal end, and a distal region, the distal region having a lumen which receives the filter and an aperture adapted to pass the guidewire, wherein, during use, the guidewire is positioned in a vessel at a region of interest, the sheath carrying the support wire is advanced along the guidewire until the filter reaches the region of interest, and the sheath is withdrawn to expose the filter.
Claim 34
Dependent Claim
128 words
A percutaneous filter system, comprising: a guidewire; a support wire having a proximal end, a distal end, a distal region, and an expandable filter mounted on the distal region of the support wire, the support wire adapted to receive a percutaneous medical instrument; and a sheath which removeably covers the support wire and filter, the sheath having a proximal end, a distal end, and a distal region, the distal region having a lumen which receives the filter and an aperture adapted to pass the guidewire, wherein, during use, the guidewire is positioned in a vessel at a region of interest, the sheath carrying the support wire is advanced along the guidewire until the filter reaches the region of interest, and the sheath is withdrawn to expose the filter.
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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) | 2003-11-07 | 2004-05-08 | 2004-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-07 | 2008-05-08 | 2008-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-07 | 2012-05-08 | 2012-11-07 | $7700.00 | Window Closed / Lapsed |