Dual net vascular filtration devices and related systems and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-002/01
A61F-002/86
A61F-002/91
A61F-002/82
출원번호
US-0961503
(2013-08-07)
등록번호
US-9603693
(2017-03-28)
발명자
/ 주소
Cully, Edward H.
Duncan, Jeffrey B.
Vonesh, Michael J.
출원인 / 주소
W. L. Gore & Associates, Inc.
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
According to one aspect of the disclosure, a dual net vascular filtration device comprises a central frame, a proximal filter net attached to a proximal end of the central frame, and a distal filter net attached to a distal end of the central frame. Upon deployment, the distal filter net can be conf
According to one aspect of the disclosure, a dual net vascular filtration device comprises a central frame, a proximal filter net attached to a proximal end of the central frame, and a distal filter net attached to a distal end of the central frame. Upon deployment, the distal filter net can be configured to evert into the proximal filter net.
대표청구항▼
1. A vascular filtration device comprising a central frame, a proximal filter net attached proximate to a proximal end of the central frame, and a distal filter net attached proximate to a distal end of the central frame,wherein the distal filter net is configured to evert into the proximal filter n
1. A vascular filtration device comprising a central frame, a proximal filter net attached proximate to a proximal end of the central frame, and a distal filter net attached proximate to a distal end of the central frame,wherein the distal filter net is configured to evert into the proximal filter net upon deployment in a host vessel;wherein the central frame comprises a hinged portion formed by a first frame element and a second frame element adjacent to the first frame element, the first frame element being connected to the second frame element such that the first frame element is rotatable under the second frame element to allow the distal end of the central frame to evert with respect to the proximal end of the central frame. 2. A vascular filtration device as in claim 1, wherein the central frame comprises a cross section that is tapered along its axial length. 3. A vascular filtration device as in claim 1, wherein the central frame comprises a cross section that has a non-elliptical shape. 4. A vascular filtration device as in claim 1, wherein the hinged portion comprises loosely connected adjacent frame elements. 5. A vascular filtration device as in claim 1, wherein the hinged portion comprises adjacent frame elements connected by one or more flexible bridges. 6. A vascular filtration device as in claim 1, wherein at least one of the proximal filter net and the distal filter net comprises a heparin coating. 7. A vascular filtration device as in claim 1, wherein the proximal filter net can further be configured to evert into the distal filter net upon deployment in the host vessel such that the device can be deployed or retrieved in either an antegrade or retrograde direction. 8. A vascular filtration device as in claim 7, wherein the distal filter net is dimensionally smaller than the proximal filter net so as to provide an open space subtended only by the proximal filter net and the distal filter net upon eversion of the distal filter net into the proximal filter net. 9. A system for confinement of embolic debris comprising: a vascular filtration device attached to an elongate element;wherein the vascular filtration device comprises a central frame, a proximal filter net attached proximate to a proximal end of the central frame, and a distal filter net attached proximate to a distal end of the central frame wherein the central frame comprises a hinged portion formed by separate, adjacent frame elements that are loosely connected end-to-end such that one of the adjacent frame elements is rotatable under the other of the adjacent frame elements to allow the distal end of the central frame to evert with respect to the proximal end of the central frame; andwherein the distal filter net is configured to evert into the proximal filter net upon deployment in a host vessel. 10. A system for confinement of embolic debris as in claim 9, wherein the elongate element is an inner catheter. 11. A system for confinement of embolic debris as in claim 9, wherein the vascular filtration device is restrained or otherwise covered in a radially collapsed delivery configuration by a releasable or removable cover. 12. A system for confinement of embolic debris as in claim 9, wherein the vascular filtration device is restrained or otherwise covered in a radially collapsed delivery configuration by a surrounding elongate element. 13. A system for confinement of embolic debris as in claim 12, wherein the surrounding elongate element is an outer catheter. 14. A system for confinement of embolic debris as in claim 9, wherein the proximal filter net can further be configured to evert into the distal filter net upon deployment in the host vessel such that the device can be deployed or retrieved in either an antegrade or retrograde direction. 15. A method for confinement of embolic debris comprising: delivering a vascular filtration device to a host vessel in a radially collapsed delivery configuration,wherein the vascular filtration device comprises a central frame, a proximal filter net attached proximate to a proximal end of the central frame, and a distal filter net attached proximate to a distal end of the central frame wherein the central frame is configured to have minimum contact points with the host vessel and comprises a hinged portion formed by separate adjacent frame elements connected to one another, one of the adjacent frame elements being rotatable under the other of the adjacent frame elements to allow the distal end of the central frame to evert with respect to the proximal end of the central frame;deploying the vascular filtration device from either a releasable or removable cover or a surrounding elongate element:everting the distal filter net into the proximal filter net;filtering embolic debris; andretrieving the vascular filtration device from the host vessel. 16. A method for confinement of embolic debris as in claim 15, wherein at least one of the proximal filter net and the distal filter net comprises a heparin coating. 17. A method for confinement of embolic debris as in claim 15, wherein the distal filter net is dimensionally smaller than the proximal filter net so as to provide an open space subtended only by the proximal filter net and the distal filter net upon eversion of the distal filter net into the proximal filter net.
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이 특허에 인용된 특허 (6)
Leeflang, Stephen; DeMarais, Denise; Evans, Michael, Apparatus and methods for capturing particulate material within blood vessels.
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