A prosthesis that resiliently engages a body passage includes an annular clamping ring which may be folded along a diametric axis for insertion into the body passage. The clamping ring is adapted to resiliently spring outwardly, once in position inside the body passage, and to be continually resilie
A prosthesis that resiliently engages a body passage includes an annular clamping ring which may be folded along a diametric axis for insertion into the body passage. The clamping ring is adapted to resiliently spring outwardly, once in position inside the body passage, and to be continually resiliently biased against the interior surface of the body passage. One or more of the clamping rings may be attached to opposed ends of a tubular graft. The rings and connected graft may be positioned in the body passage using a applicator which selectively permits expansion and/or in some embodiments contraction of the annular ring in position within a body passage. Alternatively a retaining member may be used to retain the annular ring in a compressed condition until it is in a desired position within a body passage. Among other potential uses, the present invention may be useful as a vascular stent for treating abdominal aortic aneurysms.
대표청구항▼
1. A prosthesis for insertion into a body passage comprising at least two annular resilient elements, each element formed from a plurality of radially overlapping windings of wire, said windings having been wound such that they sustain substantially continuous contact for a complete turn of the annu
1. A prosthesis for insertion into a body passage comprising at least two annular resilient elements, each element formed from a plurality of radially overlapping windings of wire, said windings having been wound such that they sustain substantially continuous contact for a complete turn of the annular element, the diameter of each of the annular elements substantially the same as a diameter of at least one of said windings, said annular elements adapted to be folded around their respective diametric axes to assume a smaller cross-sectional configuration; a flexible tubular graft having a longitudinal axis and two free ends, one of said at least two annular elements attached to one of said two free ends and coaxial with said graft, the other of said at least two annular elements spaced apart from said one of said at least two annular elements; anda rigid member connected to at least one of said at least two annular elements, said rigid member parallel to the longitudinal axis of said graft and less flexible than said graft. 2. A prosthetic device comprising: an annular, resilient element formed by overlapping windings of a strand of resilient wire such that the diameter of the annular element is substantially the same as the diameter of at least one of said windings, at least three windings tied together by at least one tie that encircles said windings to form a bundle that has a substantially circular cross-section; anda fabric graft connected to said element. 3. The device of claim 2 further including a pair of elements, said pair of elements connected by a tubular graft. 4. The device of claim 2 wherein said graft is tubular, said element being connected to one end of said tubular graft, said tubular graft having a first diameter proximate to said connection to said element and a second diameter spaced away from said element, said first diameter being greater than said second diameter. 5. The device of claim 4 wherein said tubular graft is a fabric graft, said element connected to said fabric graft at only one end of said fabric graft. 6. The device of claim 2 wherein said graft is a bifurcated graft connected to said element, said bifurcated graft including a first tubular section connected to said element and a pair of tubular sections connected to said first tubular section, each of said pair of tubular sections having free ends. 7. The prosthesis of claim 1 wherein said member is a wire connected to said elements. 8. The device of claim 2 wherein said element is folded along a single diametric axis to adopt a C-shaped configuration. 9. The device of claim 3 further including a second prosthesis comprising a second annular, resilient element formed by overlapping a plurality of windings of wire radially on top of one another around a common core, said windings connected to form a bundle, said second element connected to one end of a second tubular graft, said annular resilient element and graft telescopically engageable with said second prosthesis. 10. The device of claim 9 wherein said pair of elements are connected by a wire, said wire extending along the length of said tubular graft. 11. The device of claim 6 further including a pair of annular elements connected to the free ends of said tubular sections. 12. The device of claim 6 further including a second and a third prosthesis, said second and third prostheses each comprising an annular, resilient element formed by overlapping a plurality of windings of wire radially on top of one another around a common core, said windings connected to form a bundle, said element connected to a graft, each of said second and third prostheses telescopically engageable with one of said pair of tubular sections. 13. The device of claim 12 further including a fourth prosthesis, said fourth prosthesis comprising a fourth annular, resilient element formed by overlapping a plurality of windings of wire radially on top of one another around a common core, said windings connected to form a bundle, said fourth element connected to a fourth graft, said annular resilient element and graft telescopically engageable with said fourth prosthesis. 14. The prosthesis of claim 1 wherein said annular resilient elements are formed by overlapping a plurality of windings of wire radially on top of one another around a common core, said windings connected to form a bundle.
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이 특허에 인용된 특허 (27)
Sakura ; Jr. Chester Y. (6417 Esther NE. Albuquerque NM 87109), Anastomosis device and method.
Barone Hector D. (Maza 1869/73 Buenos Aires TX ARX 1240) Palmaz Julio C. (636 Ivy La. San Antonio TX 78209) Parodi Juan C. (Mercedes 4255 Buenos Aires ARX 1419), Aortic graft for repairing an abdominal aortic aneurysm.
Inoue Kanji (98-13 ; Miyazaki-cho Simogamo Sakyo-ku ; Kyoto-shi ; Kyoto 606 JPX), Appliance collapsible for insertion into human organs and capable of resilient restoration.
Piplani Alec A. (Mountain View CA) Quiachon Dinah B. (San Jose CA) Sterman Wesley D. (San Francisco CA), Endovascular graft having bifurcation and apparatus and method for deploying the same.
Lazarus Harrison M. (Salt Lake City UT) Williams Ronald G. (Menlo Park CA) Sterman Wesley D. (San Francisco CA), Endovascular grafting apparatus, system and method and devices for use therewith.
Goicoechea George (Freeport BSX) Hudson John (Clearwater FL) Mialhe Claude (Draguignan FRX), Method for delivering a bifurcated endoluminal prosthesis.
Fogarty Thomas J. ; Freislinger Kirsten ; Weinberg Steven ; Cox Brian J. ; Evans Michael A. ; Kim Steven W. ; Lenker Jay A., Modular intraluminal prostheses construction and methods.
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