CA2473109A1 - Distal protection filter - Google Patents

Distal protection filter Download PDF

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Publication number
CA2473109A1
CA2473109A1 CA002473109A CA2473109A CA2473109A1 CA 2473109 A1 CA2473109 A1 CA 2473109A1 CA 002473109 A CA002473109 A CA 002473109A CA 2473109 A CA2473109 A CA 2473109A CA 2473109 A1 CA2473109 A1 CA 2473109A1
Authority
CA
Canada
Prior art keywords
filter
filter assembly
elongate shaft
diameter
distal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002473109A
Other languages
French (fr)
Other versions
CA2473109C (en
Inventor
Thomas E. Broome
Verivada Chandrasekaran
John M. K. Daniel
James E. Mayberry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Ltd Barbados
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2473109A1 publication Critical patent/CA2473109A1/en
Application granted granted Critical
Publication of CA2473109C publication Critical patent/CA2473109C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/0108—Both ends closed, i.e. legs gathered at both ends
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/011—Instruments for their placement or removal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/01—Filters implantable into blood vessels
    • A61F2002/018—Filters implantable into blood vessels made from tubes or sheets of material, e.g. by etching or laser-cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical

Abstract

Methods and devices for capturing debris within a blood vessel are disclosed. A filter assembly in accordance with the present invention comprises an elongate shaft having a proximal end and a distal end, and a filter fixed to the elongate shaft proximate the distal end thereof. A filter assembly in accordance with the present invention may further include a means for reducing the volume of the debris that is disposed within the filter.

Claims (31)

1. A filter assembly for capturing debris within a blood vessel, the filter being retrievable by a retrieval sheath, comprising:
an elongate shaft having a proximal end and a distal end;
a filter disposed proximate the distal end of the elongate shaft;
the filter further comprising a first tapered portion having base diameter and an apex;
the filter comprising a second tapered portion having first diameter and a second diameter; and wherein the base diameter of the first tapered portion is similar to an inner diameter of the retrieval sheath.
2. The filter assembly of claim 1, wherein the first diameter of the second tapered portion is similar to the inner diameter of the retrieval sheath when the filter assumes an expanded shape.
3. The filter assembly of claim 1, wherein the second diameter of the first tapered portion is substantially equal to the first diameter of the second tapered portion.
4. The filter assembly of claim 1, further including a limiter that limits the base diameter of the first taper to a diameter that is substantially similar to an inner diameter of the retrieval sheath.
5. A filter assembly for capturing debris within a blood vessel, comprising:
an elongate shaft having a proximal end and a distal end;
a filter disposed proximate the distal end of the elongate shaft; and a means for reducing the volume of the captured debris.
6. The filter assembly of claim 5, wherein the means for reducing the volume of the captured debris comprises a lumen defined by the elongate shaft;
and a fluid source fluidly communicating with the lumen for delivering a pharmaceutical agent to a location proximate the filter.
7. The filter assembly of claim 5, wherein the elongate shaft comprises an electrically conductive core and an electrically insulating layer overlaying the electrically conductive core; and the means for reducing the volume of the captured debris comprises a radio frequency energy source electrically coupled to the electrically conductive core of the elongate shaft and at least one aperture extending through the electrically insulating layer of the elongate shaft.
8. The filter assembly of claim 5, wherein the filter has a first portion having a first included angle and a second portion having a second included angle;
the first included angle being greater than the second included angle; and the second portion of the filter being configured such that fine debris will be extruded through the second portion of the filter when the filter is collapsed.
9. A filter assembly for capturing debris within a blood vessel, comprising:
an elongate shaft having a proximal end and a distal end;
a filter disposed proximate the distal end of the elongate shaft; and a lumen defined by the elongate shaft for delivering a pharmaceutical agent to an area proximate the filter.
10. The filter assembly of claim 9, further including at least one aperture defined by a wall of the elongate shaft and fluidly communicating with the lumen.
11. The filter assembly of claim 9, further including a fluid source coupled to the proximal end of the elongate shaft and fluidly communicating with the lumen.
12. The filter assembly of claim 9, wherein the filter includes an expandable frame.
13. The filter assembly of claim 9, wherein the filter includes a filter membrane.
14. The filter assembly of claim 9, wherein the frame comprises a shape memory material.
15. The filter assembly of claim 9, wherein the shape memory material comprises a shape memory alloy.
16. The filter assembly of claim 9, wherein the shape memory alloy comprises nitinol.
17. The filter assembly of claim 9, wherein the filter membrane portion of the filter tapers distally.
18. The filter assembly of claim 9, wherein the membrane includes polyurethane.
19. The filter assembly of claim 9, wherein the membrane defines a plurality of apertures.
20. A filter assembly for capturing debris within a blood vessel, comprising:
an elongate shaft having a proximal end and a distal end;
a filter disposed proximate the distal end of the elongate shaft;
the elongate shaft comprising an electrically conductive core and an electrically insulating layer overlaying the electrically conductive core; and at least one aperture extending through the electrically insulating layer of the elongate shaft.
21. The filter assembly of claim 20, wherein the at least one aperture is disposed proximate the filter.
22. The filter assembly of claim 20, further including a lead wire electrically coupled to the elongate shaft.
23. The filter assembly of claim 20, further including a radio frequency energy source electrically coupled to the conductive core of the elongate shaft.
24. The filter assembly of claim 20, wherein the filter includes an expandable frame.
25. The filter assembly of claim 20, wherein the filter includes a filter membrane.
26. The filter assembly of claim 20, wherein the frame comprises a shape memory material.
27. The filter assembly of claim 20, wherein the shape memory material comprises a shape memory alloy.
28. The filter assembly of claim 20, wherein the shape memory alloy comprises nitinol.
29. The filter assembly of claim 20, wherein the filter membrane portion of the filter tapers distally.
30. The filter assembly of claim 20, wherein the membrane includes polyurethane.
31. The filter assembly of claim 20, wherein the membrane defines a plurality of apertures.
CA2473109A 2002-01-10 2003-01-07 Distal protection filter Expired - Fee Related CA2473109C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/044,368 2002-01-10
US10/044,368 US8647359B2 (en) 2002-01-10 2002-01-10 Distal protection filter
PCT/US2003/000269 WO2003059205A2 (en) 2002-01-10 2003-01-07 Distal protection filter

Publications (2)

Publication Number Publication Date
CA2473109A1 true CA2473109A1 (en) 2003-07-24
CA2473109C CA2473109C (en) 2011-08-23

Family

ID=21931994

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2473109A Expired - Fee Related CA2473109C (en) 2002-01-10 2003-01-07 Distal protection filter

Country Status (6)

Country Link
US (1) US8647359B2 (en)
EP (1) EP1463458B1 (en)
JP (1) JP4387196B2 (en)
AU (1) AU2003226435A1 (en)
CA (1) CA2473109C (en)
WO (1) WO2003059205A2 (en)

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EP1463458A2 (en) 2004-10-06
US20030130682A1 (en) 2003-07-10
EP1463458B1 (en) 2012-08-08
CA2473109C (en) 2011-08-23
WO2003059205A3 (en) 2004-07-22
AU2003226435A1 (en) 2003-07-30
US8647359B2 (en) 2014-02-11
JP4387196B2 (en) 2009-12-16
JP2006500967A (en) 2006-01-12
WO2003059205A2 (en) 2003-07-24

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