CA2444541A1 - Emboli filtration system having integral strut arrangement and methods of use - Google Patents

Emboli filtration system having integral strut arrangement and methods of use Download PDF

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Publication number
CA2444541A1
CA2444541A1 CA002444541A CA2444541A CA2444541A1 CA 2444541 A1 CA2444541 A1 CA 2444541A1 CA 002444541 A CA002444541 A CA 002444541A CA 2444541 A CA2444541 A CA 2444541A CA 2444541 A1 CA2444541 A1 CA 2444541A1
Authority
CA
Canada
Prior art keywords
guide wire
filter element
distal
filter
disposed
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
CA002444541A
Other languages
French (fr)
Other versions
CA2444541C (en
Inventor
Mark C. Bates
Michael Hogendijk
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 CA2444541A1 publication Critical patent/CA2444541A1/en
Application granted granted Critical
Publication of CA2444541C publication Critical patent/CA2444541C/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
    • A61F2/013—Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
    • A61F2002/015—Stop means therefor
    • 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
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
    • 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
    • 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
    • A61F2230/0073—Quadric-shaped
    • A61F2230/008—Quadric-shaped paraboloidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires
    • A61M2025/09175—Guide wires having specific characteristics at the distal tip
    • A61M2025/09183—Guide wires having specific characteristics at the distal tip having tools at the distal tip

Abstract

An emboli filtration apparatus (10) is provided comprising a guide wire (71) having a filter element captured thereon, so that the guide wire (71) is free to rotate or translate while the filter element (70) remains stationary. The apparatus (10) allows for movement and rotation of the guide wire (71) as devices are advanced over it to treat occlusive disease, substantially without dislodging the filter element (70).

Claims (20)

1. Apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:

a guide wire having a distal region and a distal stop disposed on the distal region;
a tubular segment disposed on the distal region of the guide wire proximal to the distal stop, the tubular segment having a circumference and a plurality of longitudinally-extending through-wall slits disposed around the circumference, the longitudinally-extending through-wall slits defining a plurality of self-expanding struts and a filter sac disposed on the struts of the tubular segment.
2. The apparatus of claim 1 wherein the guide wire further includes a proximal stop disposed on the guide wire proximal to the tubular segment.
3. The apparatus of claim 1 further comprising a tube interposed between the tubular segment and the guide wire, the filter sac coupled to a distal end of the tube.
4. The apparatus of claim 1 further comprising a retrieval catheter having a distal end and a recovery sock coupled to the distal end.
5. The apparatus of claim 4 wherein the recovery sock prevents emboli captured by the filter sac from escaping into the blood when the tubular segment is collapsed for removal.
6. The apparatus of claim 1 wherein each one of the plurality of self-expanding struts includes a portion that lies flush against the vessel when the apparatus is deployed.
7. The apparatus of claim 1 wherein the filter sac is affixed to an interior surface of the plurality of self-expanding struts.
8. The apparatus of claim 1 wherein the filter sac is at least partially affixed to an exterior surface of the plurality of self-expanding struts.
9. The apparatus of claim 1 further comprising:

a linear bearing disposed on the guide wire proximal to the distal stop; and a flexible coil coupled between the linear bearing and a distal end of the tubular segment.
10. The apparatus of claim 9 wherein the coil comprises a plurality of adjacent turns, the plurality of adjacent turns being spaced sufficiently close to one another enough that emboli cannot pass therebetween.
11. Apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:

a guide wire having a distal region;
a filter, element disposed for rotation on the distal region of the guide wire, the filter element comprising a self-expanding strut and a filter sac connected to the self-expanding strut; and a distal stop disposed on the distal region distal to the filter element, the distal stop limiting distal translation of the filter element on the guide wire.
12. The apparatus of claim 11 wherein, when the filter sac is deployed in the vessel, rotation of the guide wire does not displace the filter element.
13. The apparatus of claim 11 further comprising a proximal stop disposed on the guide wire proximal to the filter element.
14. The apparatus of claim 13 wherein the filter element is disposed for sliding translation on the guide wire between the proximal stop and the distal stop.
15. The apparatus of claim 11 wherein the filter element further comprises a flexible tube interposed between the guide wire and the self-expanding strut, a distal end of the filter sac being coupled to the flexible tube.
16. The apparatus of claim 11 wherein the filter element comprises a tubular segment having a circumference and a plurality of longitudinally-extending through-wall slits disposed around the circumference, the longitudinally-extending through-wall slits defining the self-expanding strut.
17. The apparatus of claim 11 further comprising:

a linear bearing disposed on the guide wire proximal to the distal stops and a flexible coil coupled between the linear bearing and a distal end of the filter element.
18. A method of filtering emboli from blood flowing through a vessel, the method comprising:
providing a guide wire having a distal region including a distal stop, and a filter element disposed for translation on the guide wire proximal to the distal stop, the filter element comprising a plurality of self-expanding struts having a filter sac affixed thereto;
transluminally inserting the guide wire and filter element into a vessel;
deploying the filter element so that the struts and filter sac expand to engage a wall of the vessel, the filter sac filtering emboli out of blood flowing through the vessel advancing a treatment device along the guide wire to treat a portion of the vessel proximal to the location of the filter element, rotation or distal translation of the guide wire relative to the filter element imparted by the treatment device not displacing the filter element.
19. The method of claim 18 further comprising retracting the guide wire in a proximal direction to cause the distal stop to abut against the filter element.
20. The method of claim 18 further comprising:
providing a retrieval catheter having a recovery sock;
advancing the retrieval catheter over the guide wire until the recovery sock covers a mouth of the filter element; and urging the retrieval catheter against the self-expanding struts of the filter element to cause the filter element to collapse.
CA2444541A 2001-01-29 2002-01-24 Emboli filtration system having integral strut arrangement and methods of use Expired - Fee Related CA2444541C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/774,197 US6468291B2 (en) 1999-07-16 2001-01-29 Emboli filtration system having integral strut arrangement and methods of use
US09/774,197 2001-01-29
PCT/US2002/002147 WO2002060519A1 (en) 2001-01-29 2002-01-24 Emboli filtration system having integral strut arrangement and methods of use

Publications (2)

Publication Number Publication Date
CA2444541A1 true CA2444541A1 (en) 2002-08-08
CA2444541C CA2444541C (en) 2010-12-14

Family

ID=25100512

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2444541A Expired - Fee Related CA2444541C (en) 2001-01-29 2002-01-24 Emboli filtration system having integral strut arrangement and methods of use

Country Status (4)

Country Link
US (1) US6468291B2 (en)
EP (2) EP1980218A3 (en)
CA (1) CA2444541C (en)
WO (1) WO2002060519A1 (en)

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US20010012951A1 (en) 2001-08-09
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