CA2562690A1 - Removable vena cava filter having primary struts for enhanced retrieval and delivery - Google Patents

Removable vena cava filter having primary struts for enhanced retrieval and delivery Download PDF

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Publication number
CA2562690A1
CA2562690A1 CA002562690A CA2562690A CA2562690A1 CA 2562690 A1 CA2562690 A1 CA 2562690A1 CA 002562690 A CA002562690 A CA 002562690A CA 2562690 A CA2562690 A CA 2562690A CA 2562690 A1 CA2562690 A1 CA 2562690A1
Authority
CA
Canada
Prior art keywords
struts
filter
strut
primary
longitudinal axis
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
CA002562690A
Other languages
French (fr)
Other versions
CA2562690C (en
Inventor
Thomas A. Osborne
Arne Molgaard-Nielsen
Per Hendriksen
Rolf Gunther
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.)
Cook Medical Technologies LLC
Original Assignee
Cook, Inc.
William Cook Europe Aps
Thomas A. Osborne
Arne Molgaard-Nielsen
Per Hendriksen
Rolf Gunther
Cook Medical Technologies Llc
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 Cook, Inc., William Cook Europe Aps, Thomas A. Osborne, Arne Molgaard-Nielsen, Per Hendriksen, Rolf Gunther, Cook Medical Technologies Llc filed Critical Cook, Inc.
Publication of CA2562690A1 publication Critical patent/CA2562690A1/en
Application granted granted Critical
Publication of CA2562690C publication Critical patent/CA2562690C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61F2/0103—With centering means
    • 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
    • A61F2/0105—Open ended, i.e. legs gathered only at one side
    • 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
    • A61F2002/016—Filters implantable into blood vessels made from wire-like elements
    • 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
    • A61F2230/0073—Quadric-shaped
    • A61F2230/008—Quadric-shaped paraboloidal

Abstract

A removable filter (10) having a collapsed state and an expanded state for capturing thrombi in a blood vessel is disclosed. The filter comprises a plurality of primary struts (12) and a plurality of secondary struts. Each primary strut in the expanded state extends from a primary strut first end to an anchoring hook (26). Each primary strut extends arcuately along a longitudinal axis and linearly radially. The plurality of primary strut first ends are attached together along the longitudinal axis (x). Each secondary strut in the expanded state extends from a secondary strut first end to a free end. Each secondary strut extends arcuately along the longitudinal axis and linearly radially. The plurality of secondary struts are attached together along the longitudinal axis. The plurality of secondary struts centralize the filter in the expanded state in the blood vessel.

Claims (20)

1. A removable filter having a collapsed state and an expanded state for capturing thrombi in a blood vessel, the filter comprising:
a plurality of primary struts, each . primary strut in the expanded state extending from a primary strut first end to an anchoring hook, each primary strut extending arcuately along a longitudinal axis and linearly radially, the plurality of primary strut first ends being attached together along the longitudinal axis;
and a plurality of secondary struts, each secondary strut in the expanded state extending from a secondary strut first end to a free end, each secondary strut extending arcuately along the longitudinal axis and linearly radially, the plurality of secondary struts being attached together along the longitudinal axis, the plurality of secondary struts centralizing the filter in the expanded state in the blood vessel.
2. The removable filter of claim 1 further comprising:
a hub configured to axially house the first ends of the plurality of primary struts; and a retrieval hook extending from the hub opposite the plurality of primary struts for removal of the filter from the blood vessel.
3. The removable filter of claim 1 wherein the arcuate segment includes a first curved portion and a second curved portion, the first curved portion extending from the first end, the second curved portion extending from the first curved portion and terminating at the anchoring hook.
4. The removable filter of claim 3 wherein the first curved portion is configured to extend radially from the longitudinal axis of the filter and the second curved portion is configured to extend radially toward the longitudinal axis of the filter.
5. The removable filter of claim 3 wherein the first and second curved portions are configured to have a non-parallel relationship with the longitudinal axis of the filter.
6. The removable filter of claim 1 wherein each primary strut is formed of a superelastic material, stainless steel wire, Nitinol, cobalt-chromium-nickel-molybdenum-iron alloy, or cobalt-chrome alloy.
7. The removable filter of claim 2 wherein each secondary strut is formed of a superelastic . material, stainless steel wire, Nitinol, cobalt-chromium-nickel-molybdenum-iron alloy, or cobalt-chrome alloy.
8. The filter of claim 1 wherein pairs of secondary struts are positioned between pairs of primary struts, each pair of secondary struts being twisted about each other near the connected ends of the respective secondary struts to form a twisted section.
9. The filter of claim 8 wherein each twisted section includes between about one and ten twists.
10. The removable filter of claim 1 wherein the struts are formed of shape memory alloy with a transition temperature.
11. The removable filter of claim 10 wherein the struts collapse to the collapsed state when the temperature of the struts is about equal to or greater than the transition temperature.
12. The removable filter of claim 10 wherein the struts expand to the expanded state when the temperature of the struts is about equal to or greater than the transition temperature.
13. A removable filter having an expanded state and a collapsed state for capturing thrombi in a blood vessel, the filter comprising:
a plurality of primary struts, each primary strut in the expanded state extending from a primary strut first end to an anchoring hook, each primary strut extending arcuately along a longitudinal axis and linearly radially;
a plurality of secondary struts, each secondary strut in the expanded state extending from a secondary strut first end to a free end, each secondary strut extending arcuately along the longitudinal axis and linearly radially, wherein the plurality of secondary struts centralizes the filter in the expanded state in the blood vessel;

a hub axially housing the primary strut first ends and secondary strut first ends; and a retrieval hook extending from the hub opposite the plurality of primary struts for removal of the filter from the blood vessel.
14. The removable filter of claim 13 wherein the first curved portion is configured to extend radially from the longitudinal axis of the filter and the second curved portion is configured to extend radially toward the longitudinal axis of the filter.
15. The removable filter of claim 13 wherein each secondary strut is formed of a superelastic material, stainless steel wire, Nitinol, cobalt-chromium-nickel-molybdenum-iron alloy, or cobalt chrome-alloy.
16. The removable filter of claim 13 wherein each secondary strut is formed of a superelastic material, stainless steel wire, Nitinol, cobalt-chromium-nickel-molybdenum-iron alloy, or cobalt chrome-alloy.
17. The removable filter of claim 13 wherein the struts are formed of shape memory alloy with a transition temperature.
18. The removable filter of claim 17 wherein the struts collapse to the collapsed state when the temperature of the struts is about equal to or greater than the transition temperature.
19. The removable filter of claim 17 wherein the struts expand to the expanded state when the temperature of the struts is about equal to or greater than the transition temperature.
20. A removable filter having an expanded state and a collapsed state for capturing thrombi in a blood vessel, the filter comprising:
a plurality of primary struts, each primary strut in the expanded state extended from a primary strut first end to an anchoring hook, each primary strut extending arcuately along a longitudinal axis and linearly radially, the plurality of primary strut first ends being attached together along the longitudinal axis, the anchoring hooks in the expanded state defining a first axial portion; and a plurality of secondary struts, each secondary strut in the expanded state extending from a secondary strut first end to a free end, each secondary strut extending arcuately along the longitudinal axis and linearly radially, the plurality of secondary struts being attached together along the longitudinal axis, the free ends of the secondary struts in the expanded state defining a second axial portion to centralize the filter in the blood vessel, the plurality of secondary struts centralizing the filter in the expanded state in the blood vessel.
CA2562690A 2004-04-16 2005-04-18 Removable vena cava filter having primary struts for enhanced retrieval and delivery Active CA2562690C (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US56281304P 2004-04-16 2004-04-16
US56280904P 2004-04-16 2004-04-16
US56317604P 2004-04-16 2004-04-16
US56290904P 2004-04-16 2004-04-16
US60/562,809 2004-04-16
US60/563,176 2004-04-16
US60/562,813 2004-04-16
US60/562,909 2004-04-16
PCT/US2005/013322 WO2005102213A1 (en) 2004-04-16 2005-04-18 Removable vena cava filter having primary struts for enhanced retrieval and delivery

Publications (2)

Publication Number Publication Date
CA2562690A1 true CA2562690A1 (en) 2005-11-03
CA2562690C CA2562690C (en) 2012-07-17

Family

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Family Applications (1)

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CA2562690A Active CA2562690C (en) 2004-04-16 2005-04-18 Removable vena cava filter having primary struts for enhanced retrieval and delivery

Country Status (7)

Country Link
US (1) US8105349B2 (en)
EP (2) EP2158874A1 (en)
JP (1) JP4898988B2 (en)
AU (1) AU2005234752B2 (en)
CA (1) CA2562690C (en)
DK (1) DK1737383T3 (en)
WO (1) WO2005102213A1 (en)

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