US20040073293A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional braided covered stent
Assignee: Lifeshield Sciences LLC
•
Filing: 2003-07-15
•
Granted: —
•
Expires: 2023-07-15
Abstract
Abstract A prosthesis for transluminal implantation consists of a flexible tubular three-dimensionally braided structure of metal or polymeric monofilaments, and polymeric multifilament yarns. The prosthesis can be elastically deformed to reduce its diameter through axial elongation. The monofilaments and multifilament yarns are arranged in axially spaced apart helices, concentric on a common central axis of the prosthesis. The monofilaments are selectively shaped before their interbraiding with the multifilament yarns, either by an age-hardening or other heat-setting stage, or a cold-working stage that controllably plastically deforms the strands. The shaped structural strands cooperate to impart to the prosthesis its nominal shape and resilience. The textile strands cooperate to provide one or more layers of sheeting that reduce permeability and thereby enhance the utility of the prosthesis as a vascular graft. An alternative embodiment prosthesis includes elastically and plastically deformable structural strands, selectively plastically deformed by cold working, then three-dimensionally braided to form the prosthesis.
Inventors
- 👤 Paul Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/02; A61F2/04; A61F2/06; D; D04; D04C; D04C1/00; D04C1/06; D04C3/00; D04C3/02; D04C3/36; D04C3/40; D04C3/48; A61F2/0077; A61F2/07; A61F2/95; A61F2002/072; A61F2210/00; A61F2210/0004; A61F2210/0076; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/0075; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0058; A61F2250/0067; A61F2250/0096; A61F2250/0098; D10; D10B; D10B2401/00; D10B2401/06; D10B2401/061; D10B2509/00; D10B2509/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
5 words
1 - 53 . (Cancelled)
Claim 2
Dependent Claim
5 words
1 - 53 . (Cancelled)
Claim 3
Dependent Claim
141 words
54 . (New) A prosthesis, including: a three-dimensionally braided structure including a plurality of structural strands and a plurality of textile strands interbraided with the structural strands and being more compliant than the structural strands, wherein the structural strands are formed of a structural material and have respective nominal shapes when in a relaxed state under no external stress and are elastically deformable away from their respective nominal shapes, wherein each of the structural strands further is adapted to be altered to acquire a selected nominal shape different from an original nominal shape; wherein only the structural stands are so altered, and in their respective selected nominal shapes form windings about a longitudinal access with tubular profiles, and further are oriented within the braided structure to impart to the braided structure a tubular predetermined nominal shape corresponding to said tubular profiles.
Claim 4
Dependent Claim
141 words
54 . (New) A prosthesis, including: a three-dimensionally braided structure including a plurality of structural strands and a plurality of textile strands interbraided with the structural strands and being more compliant than the structural strands, wherein the structural strands are formed of a structural material and have respective nominal shapes when in a relaxed state under no external stress and are elastically deformable away from their respective nominal shapes, wherein each of the structural strands further is adapted to be altered to acquire a selected nominal shape different from an original nominal shape; wherein only the structural stands are so altered, and in their respective selected nominal shapes form windings about a longitudinal access with tubular profiles, and further are oriented within the braided structure to impart to the braided structure a tubular predetermined nominal shape corresponding to said tubular profiles.
Claim 5
Dependent Claim
61 words
55 . (New) The prosthesis of claim 54 wherein: the structural strands are resilient and ductile, and each of the strands is adapted to be so altered according to a selective plastic deformation including application of a bending stress sufficient to cause a plastic flow and thereby alter the nominal shape from the original nominal shape to the selected nominal shape.
Claim 6
Dependent Claim
66 words
56 . (New) The prosthesis of claim 54 wherein: each of the structural strands is adapted to be so altered according to a selective thermal setting including heating at least to a heat set temperature while maintaining the structural strand in the selected nominal shape, wherein the structural strands are susceptible to said selective thermal setting only when heated at least to a heat set temperature.
Claim 7
Dependent Claim
27 words
57 . (New) The prosthesis of claim 56 wherein: the textile strands have a melting temperature, and the heat set temperature is higher than said melting temperature.
Claim 8
Dependent Claim
22 words
58 . (New) A medical device including an elongate and flexible catheter, and, mounted thereon, a prosthesis according to claim 54 .
Claim 9
Dependent Claim
48 words
59 . (New) The device of claim 58 further including: a means for releasably maintaining the prosthesis at a distal end of the elongate and flexible catheter and in a resiliently radially compressed state, operable to release the prosthesis for a radial self-expansion at an intraluminal treatment site.
Claim 10
Dependent Claim
41 words
60 . (New) The prosthesis of claim 54 wherein: the structural strands cooperate to form a latticework, and the textile strands cooperate to form a textile sheeting supported by the latticework and occupying interstices between adjacent structural strands of the latticework.
Claim 11
Dependent Claim
30 words
61 . (New) The prosthesis of claim 54 wherein: the structural strands and textile strands are three-dimensionally braided into at least first and second discrete layers of the composite structure.
Claim 12
Dependent Claim
32 words
62 . (New) The prosthesis of claim 61 wherein: at least one of the strands of the first layer is braided into the second layer to interlock the first and second layers.
Claim 13
Dependent Claim
24 words
63 . (New) The prosthesis of claim 61 wherein: said first layer incorporates finer strands and has a greater permeability than the second layer.
Claim 14
Dependent Claim
21 words
64 . (New) The prosthesis of claim 61 wherein: said structural strands form a latticework incorporated primarily into the first layer.
Claim 15
Dependent Claim
21 words
65 . (New) The prosthesis of claim 61 further including: a plurality of drug eluting strands braided into the first layer.
Claim 16
Dependent Claim
24 words
66 . (New) The prosthesis of claim 61 further including: a plurality of absorbable strands interbraided with the structural strands and the textile strands.
Claim 17
Dependent Claim
19 words
67 . (New) The prosthesis of claim 66 wherein: the absorbable strands are braided primarily into the second layer.
Claim 18
Dependent Claim
32 words
68 . (New) The prosthesis of claim 54 wherein: said structural material is a metal selected from the group consisting of: stainless steel, an alloy including cobalt, and an alloy including titanium.
Claim 19
Dependent Claim
34 words
69 . (New) The prosthesis of claim 54 wherein: said structural material is a polymer selected from the group of polymers consisting of: PET, polypropylene, PEEK, HDPE, polysulfone, PTFE, FEP, polycarbonate urethane, and polyurethane.
Claim 20
Dependent Claim
22 words
70 . (New) The prosthesis of claim 54 wherein: said textile strands are multifilament yarns in the range of about 10-400 denier.
Claim 21
Dependent Claim
26 words
71 . (New) The prosthesis of claim 70 wherein: said multifilament yarns are composed of filaments, each filament being in the range of about 0.25-10 denier.
Claim 22
Dependent Claim
37 words
72 . (New) The prosthesis of claim 70 wherein: said multifilament yarns are formed of a material selected from the group of materials consisting of: PET, polypropylene, polyurethane, polycarbonate urethane, HDPE, polyethylene, silicone, PTFE, ePTFE, and polyolefin.
Claim 23
Dependent Claim
19 words
73 . (New) The prosthesis of claim 54 wherein: said selected nominal shapes of the structural strands are helical.
Claim 24
Dependent Claim
40 words
74 . (New) The prosthesis of claim 73 wherein: said structural strands cooperate to form a latticework including first and second sets of helices running in respective first and second opposite directions, wherein the interstices of the latticework are rhombic.
Claim 25
Dependent Claim
18 words
75 . (New) The prosthesis of claim 74 wherein: the first and second sets of helices are interbraided.
Claim 26
Dependent Claim
20 words
76 . (New) The prosthesis of claim 74 wherein: the first set of helices overlies the second set of helices.
Claim 27
Dependent Claim
27 words
77 . (New) The prosthesis of claim 74 wherein: the first and second sets of helices define a braid angle in the range of about 60-150 degrees.
Claim 28
Dependent Claim
23 words
78 . (New) The prosthesis of claim 54 further including: at least one radiopaque strand interbraided with the structural strands and textile strands.
Claim 29
Dependent Claim
21 words
79 . (New) The prosthesis of claim 78 wherein: said at least one radiopaque strand is incorporated within the first layer.
Claim 30
Dependent Claim
23 words
80 . (New) The prosthesis of claim 73 wherein: said structural strands are wound in a single direction, wherein the interstices are helical.
Claim 31
Dependent Claim
46 words
81 . (New) The prosthesis of claim 54 wherein: said structural material is a recovery metal, and the selected nominal shape of each structural strand is the shape to which the structural strand returns when heated at least to an activation temperature of the recovery metal.
Claim 32
Dependent Claim
29 words
82 . (New) The prosthesis of claim 54 wherein: the original nominal shape of each structural strand is linear, and the selected nominal shape of each strand is helical.
Claim 33
Dependent Claim
166 words
83 . (New) A prosthesis, including: a three-dimensionally braided structure including a plurality of resilient structural strands formed of a structural material and a plurality of compliant textile strands interbraided with the structural strands and being more compliant than the structural strands; wherein each of the structural strands has a nominal shape when in a relaxed state under no external stress, and further is thermally formable to acquire a selected nominal shape different from an original nominal shape by a heating of the structural strand at least to a thermal forming temperature while maintaining the structural strand in the selected nominal shape, wherein the structural strands are thermally formable only when heated at least to the thermal forming temperature; wherein only the structural strands are so altered, and in their respective selected nominal shapes form windings about a longitudinal axis having tubular profiles, and are oriented within the braided structure to impart to the braided structure a tubular predetermined nominal shape corresponding to said tubular profiles.
Claim 34
Dependent Claim
166 words
83 . (New) A prosthesis, including: a three-dimensionally braided structure including a plurality of resilient structural strands formed of a structural material and a plurality of compliant textile strands interbraided with the structural strands and being more compliant than the structural strands; wherein each of the structural strands has a nominal shape when in a relaxed state under no external stress, and further is thermally formable to acquire a selected nominal shape different from an original nominal shape by a heating of the structural strand at least to a thermal forming temperature while maintaining the structural strand in the selected nominal shape, wherein the structural strands are thermally formable only when heated at least to the thermal forming temperature; wherein only the structural strands are so altered, and in their respective selected nominal shapes form windings about a longitudinal axis having tubular profiles, and are oriented within the braided structure to impart to the braided structure a tubular predetermined nominal shape corresponding to said tubular profiles.
Claim 35
Dependent Claim
29 words
84 . (New) The prosthesis of claim 83 wherein: the textile strands have a textile strand melting temperature, and the thermal forming temperature is higher than the melting temperature.
Claim 36
Dependent Claim
15 words
85 . (New) The prosthesis of claim 83 wherein: the textile strands are thermally formable.
Claim 37
Dependent Claim
41 words
86 . (New) The prosthesis of claim 83 wherein: the structural strands cooperate to form a latticework, and the textile strands cooperate to form a textile sheeting supported by the latticework and occupying interstices between adjacent structural strands and the latticework.
Claim 38
Dependent Claim
31 words
87 . (New) The prosthesis of claim 83 wherein: the structural strands and the textile strands are three-dimensionally braided into at least first and second discrete layers of the composite structure.
Claim 39
Dependent Claim
32 words
88 . (New) The prosthesis of claim 87 wherein: at least one of the strands of the first layer is braided into the second layer to interlock the first and second layers.
Claim 40
Dependent Claim
24 words
89 . (New) The prosthesis of claim 87 wherein: said first layer incorporates finer strands and has a greater permeability than the second layer.
Claim 41
Dependent Claim
30 words
90 . (New) The prosthesis of claim 83 wherein: said structural material is selected from the group consisting of: stainless steel, an alloy including cobalt, and an alloy including titanium.
Claim 42
Dependent Claim
33 words
91 . (New) The prosthesis of claim 83 wherein: said structural material is a polymer selected from the group consisting of: PET, polypropylene, PEEK, HDPE, polysulfone, acetyl, PTFE, FEP, polycarbonate urethane, and polyurethane.
Claim 43
Dependent Claim
36 words
92 . (New) The prosthesis of claim 83 wherein: the compliant textile strands are formed of a material selected from the group consisting of: PET, polypropylene, polyurethane, polycarbonate urethane, HDPE, polyethylene, silicone, PTFE, ePTFE, and polyolefin.
Claim 44
Dependent Claim
40 words
93 . (New) The prosthesis of claim 83 wherein: the structural strands cooperate to form a latticework including first and second sets of helices running in respective first and second opposite directions, whereby the interstices of the latticework are rhombic.
Claim 45
Dependent Claim
27 words
94 . (New) The prosthesis of claim 93 wherein: the first and second sets of helices define a braid angle in the range of about 60-150 degrees.
References Cited (Backward Citations)
US3805301A
Cited
US4312261A
Cited
US4441215A
Cited
US4655771B1
Cited
US4655771A
Cited
US4834755A
Cited
US4610688A
Cited
US4834747A
Cited
US4733665A
Cited
US4733665B1
Cited
US4733665C2
Cited
US4681110A
Cited
US5061275A
Cited
US4800882A
Cited
US5092877A
Cited
US5207706A
Cited
US5064435A
Cited
US5509931A
Cited
US5178630A
Cited
US5217483A
Cited
US5697969A
Cited
US5514154A
Cited
US5383925A
Cited
US5562725A
Cited
US5653747A
Cited
US5423849A
Cited
US5630840A
Cited
US5800511A
Cited
US6527802B1
Cited
US5628787A
Cited
US6123715A
Cited
US6368339B1
Cited
US6019786A
Cited
US5758562A
Cited
US5628788A
Cited
US5888201A
Cited
US6592617B2
Cited
US5891191A
Cited
US6342068B1
Cited
US5718159A
Cited
US6270524B1
Cited
US6500203B1
Cited
US5957974A
Cited
US6051021A
Cited
US6494907B1
Cited
US5979288A
Cited
US6156064A
Cited
US6159239A
Cited
US6416544B2
Cited
US6551352B2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.