Stents with attached looped ends
First Claim
Patent Images
1. An implantable prosthesis, consisting of:
- a plurality of elongate strands interbraided to form an open-frame tubular structure having opposed first and second atraumatic ends, the tubular structure being radially expandable and contractible between an enlarged-radius state and a reduced-radius state,wherein all of the strands are bent to form bends at said first atraumatic end;
wherein each of the elongate strands are integrally coupled to another alongate strand along respective end regions thereof to form a plurality of strand couplings along said second atraumatic end of the tubular structure; and
a plurality closure members disposed at said second atraumatic end, each one of said plurality of closure members being connected to a pair of associated strand couplings and extending between the associated strand couplings to form a loop segment directed axially outwardly from the associated strand couplings and each one of said plurality of closure members being connected to a different pair of the strand couplings with each pair of associated strand couplings includes first and second strand couplings, one of the strands of the first strand coupling is longer than the other strand to provide a strand extension of a predetermined length, and the strand extension is selectively shaped and connected to the second strand coupling to provide said loop segment;
wherein the plurality of closure members at said second atraumatic end is one half the number of bends at said first atraumatic end,wherein all of the bends are at said first atraumatic end,wherein all of the end regions of all of said elongate strands are at said second atraumatic end of said tubular structure and are disposed within said associated strand couplings, andwherein each one of said plurality of strand couplings is directly connected to one of said plurality of closure members.
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Abstract
An open frame prosthesis is formed with looped end terminations at its proximal and distal ends. At one end of the prosthesis, the filaments or strands are welded together in pairs to form strand couplings. A plurality of loop segments are connected to the strand couplings, one loop segment for each pair of adjacent strand couplings. In one version of the prosthesis, strands at the opposite end are bent to form looped ends. In another version, loop segments are connected to pairs of strand couplings at both ends of the prosthesis. The loop segments can be connected to the couplings by welding, fusion bonds, or tubes, which are either crimped or heat shrunk.
166 Citations
22 Claims
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1. An implantable prosthesis, consisting of:
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a plurality of elongate strands interbraided to form an open-frame tubular structure having opposed first and second atraumatic ends, the tubular structure being radially expandable and contractible between an enlarged-radius state and a reduced-radius state, wherein all of the strands are bent to form bends at said first atraumatic end;
wherein each of the elongate strands are integrally coupled to another alongate strand along respective end regions thereof to form a plurality of strand couplings along said second atraumatic end of the tubular structure; anda plurality closure members disposed at said second atraumatic end, each one of said plurality of closure members being connected to a pair of associated strand couplings and extending between the associated strand couplings to form a loop segment directed axially outwardly from the associated strand couplings and each one of said plurality of closure members being connected to a different pair of the strand couplings with each pair of associated strand couplings includes first and second strand couplings, one of the strands of the first strand coupling is longer than the other strand to provide a strand extension of a predetermined length, and the strand extension is selectively shaped and connected to the second strand coupling to provide said loop segment; wherein the plurality of closure members at said second atraumatic end is one half the number of bends at said first atraumatic end, wherein all of the bends are at said first atraumatic end, wherein all of the end regions of all of said elongate strands are at said second atraumatic end of said tubular structure and are disposed within said associated strand couplings, and wherein each one of said plurality of strand couplings is directly connected to one of said plurality of closure members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A body implantable device, consisting of:
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a plurality of elongate strands wound to define multiple cells, some of said multiple cells having a coextensive regions along which two of the strands are helically twisted about one another, to form an open-frame tubular body radially expandable and contractible between enlarged-radius and reduced-radius states, wherein all ends of said strands are at one end of the tubular body and are coupled integrally with respect to one another to form a plurality of strand end couplings arranged circumferentially about said selected end; and a plurality of closure members each individually associated with an associated pair of the strand end couplings, wherein each closure member is connected only to its associated pair of the strand end couplings and extends from a first one of the strand end couplings in the associated pair to a second one of the strand end couplings in the associated pair to form a loop segment directed axially outwardly from the associated pair; wherein the strands form an even number of the strand end couplings, and the number of closure members is equal to one-half the number of the strand end couplings, wherein all of the ends of said strands at said one selected end are disposed within said associated strand end couplings and wherein each one of said plurality of strand couplings is directly connected to one of said plurality of closure members. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An implantable prosthesis, consisting of:
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a plurality of elongate strands interbraided to form an open-frame tubular structure having opposed first and second atraumatic ends, the tubular structure being radially expandable and contractible between an enlargedradius state and a reducedradius state, wherein all of the strands are bent to form bends at said first atraumatic end;
wherein each of the elongate strands are integrally coupled to another elongate strand along respective end regions thereof to form a plurality of strand couplings along said second atraumatic end of the tubular structure; anda plurality closure members disposed at said second atraumatic end, each one of said plurality of closure members being connected to a pair of associated strand couplings and extending between the associated strand couplings to form a loop segment directed axially outwardly from the associated strand couplings and each one of said plurality of closure members being connected to a different pair of the strand couplings with each pair of associated strand couplings includes first and second strand couplings, one of the strands of the first strand coupling is longer than the other strand to provide a strand extension of a predetermined length, and the strand extension is selectively shaped and connected to the second strand coupling to provide said loop segment; wherein the plurality of closure members at said second atraumatic end is less than the number of bends at said first atraumatic end, wherein all of the bends are at said first atraumatic end, wherein all of the ends of said elongate strands are at said second atraumatic end of said tubular structure and are disposed within said associated strand couplings, and wherein each one of said plurality of strand couplings is directly connected to one of said plurality of closure members.
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Specification