US20010020181A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partial encapsulation of stents using strips and bands
Assignee: Bard Peripheral Vascular Inc
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Filing: 1999-09-29
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Granted: —
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Expires: 2019-09-29
Abstract
Abstract Partially encapsulated stents are made using strips and bands of covering material. In one embodiment ringed stents are placed over an inner ePTFE tube (e.g., supported on a mandrel) and are covered by a series of longitudinal strips. A series of spaced apart ePTFE circumferential bands can then be placed over the top of the longitudinal strips and ringed stents; alternatively bands alone or strips alone may be employed. All of the components of the structure are then laminated to the inner ePTFE tube to capture the stent. By selecting the size and position of the ePTFE bands, it is possible to leave critical parts of the stent unencapsulated to facilitate flexibility and expansion. The longitudinal strips can be woven about the stent and later laminated into position to provide an anti-compression function as well as overall structural stability. Although a single stent can be used, these approaches lend themselves to use of a plurality of individual ring stents spaced apart along the inner ePTFE tube.
Inventors
- 👤 Richard Layne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:36
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/89; A61F2002/072; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
43 words
1 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips.
Claim 2
Dependent Claim
43 words
1 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips.
Claim 3
Dependent Claim
34 words
2 . The vascular graft of claim 1 , wherein said second expanded polytetrafluoroethylene layer secures said support layer to said first expanded polytetrafluoroethylene layer and wherein portions of the support layer remain exposed.
Claim 4
Dependent Claim
32 words
3 . The vascular graft of claim 1 , further comprising a third expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced so that portions of the support layer are exposed.
Claim 5
Dependent Claim
27 words
4 . The vascular graft of claim 3 , wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 6
Dependent Claim
19 words
5 . The vascular graft of claim 1 , wherein said support layer comprises a plurality of ringed stents.
Claim 7
Dependent Claim
24 words
6 . The vascular graft of claim 5 , wherein said ringed stents are formed in a zigzag pattern of alternating peaks and valleys.
Claim 8
Dependent Claim
30 words
7 . The vascular graft of claim 6 , wherein said zigzag ringed stents are placed around said first expanded polytetrafluoroethylene layer with the alternating peaks and valleys in phase.
Claim 9
Dependent Claim
16 words
8 . The vascular graft of claim 1 , wherein said stent is made of metal.
Claim 10
Dependent Claim
25 words
9 . The vascular graft of claim 5 , wherein said longitudinal strips of material are alternatingly woven over and under each successive ringed stent.
Claim 11
Dependent Claim
46 words
10 . The vascular graft of claim 9 , wherein said longitudinal strips of material are cut from a distal end of said first expanded polytetrafluoroethylene layer of material with a proximal end of said longitudinal strips attached to said first expanded polytetrafluoroethylene layer of material.
Claim 12
Dependent Claim
70 words
11 . The vascular graft of claim 9 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 13
Dependent Claim
70 words
12 . The vascular graft of claim 10 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 14
Dependent Claim
24 words
13 . The vascular graft of claim 1 , wherein both a proximal and a distal end of said vascular graft are fully encapsulated.
Claim 15
Dependent Claim
53 words
14 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced so that portions of the support layer are exposed.
Claim 16
Dependent Claim
53 words
14 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced so that portions of the support layer are exposed.
Claim 17
Dependent Claim
25 words
15 . The vascular graft of claim 14 , wherein said second expanded polytetrafluoroethylene layer secures said support layer to said first expanded polytetrafluoroethylene layer.
Claim 18
Dependent Claim
24 words
16 . The vascular graft of claim 14 , further comprising a third expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips of material.
Claim 19
Dependent Claim
27 words
17 . The vascular graft of claim 16 , wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 20
Dependent Claim
19 words
18 . The vascular graft of claim 14 , wherein said support layer comprises a plurality of ringed stents.
Claim 21
Dependent Claim
24 words
19 . The vascular graft of claim 18 , wherein said ringed stents are formed in a zigzag pattern of alternating peaks and valleys.
Claim 22
Dependent Claim
30 words
20 . The vascular graft of claim 19 , wherein said zigzag ringed stents are placed around said first expanded polytetrafluoroethylene layer with the alternating peaks and valleys in phase.
Claim 23
Dependent Claim
16 words
21 . The vascular graft of claim 14 , wherein said stent is made of metal.
Claim 24
Dependent Claim
25 words
22 . The vascular graft of claim 16 , wherein said longitudinal strips of material are alternatingly woven over and under each successive ringed stent.
Claim 25
Dependent Claim
65 words
23 . The vascular graft of claim 22 , wherein said longitudinal strips of material are cut from a distal end of said first expanded polytetrafluoroethylene layer of material with a proximal end of said longitudinal strips attached to said first expanded polytetrafluoroethylene layer of material, and wherein a distal end of said longitudinal strips is alternatingly woven over and under each successive ringed stent.
Claim 26
Dependent Claim
69 words
24 . The vascular graft of 22 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 27
Dependent Claim
69 words
24 . The vascular graft of 22 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 28
Dependent Claim
69 words
25 . The vascular graft of 23 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 29
Dependent Claim
69 words
25 . The vascular graft of 23 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 30
Dependent Claim
24 words
26 . The vascular graft of claim 14 , wherein both a proximal and a distal end of said vascular graft are fully encapsulated.
Claim 31
Dependent Claim
89 words
27 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent with said support layer placed around said first expanded polytetrafluoroethylene layer; a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips of material; and a third expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced apart to cover a portion of an outer surface of the at least one stent, wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 32
Dependent Claim
89 words
27 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer; a support layer comprising at least one stent with said support layer placed around said first expanded polytetrafluoroethylene layer; a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips of material; and a third expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced apart to cover a portion of an outer surface of the at least one stent, wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 33
Dependent Claim
19 words
28 . The vascular graft of claim 27 , wherein said support layer comprises a plurality of ringed stents.
Claim 34
Dependent Claim
24 words
29 . The vascular graft of claim 28 , wherein said ringed stents are formed in a zigzag pattern of alternating peaks and valleys.
Claim 35
Dependent Claim
30 words
30 . The vascular graft of claim 29 , wherein said zigzag ringed stents are placed around said first expanded polytetrafluoroethylene layer with the alternating peaks and valleys in phase.
Claim 36
Dependent Claim
19 words
31 . The vascular graft of claim 27 , wherein said at least one stent is made of metal.
Claim 37
Dependent Claim
25 words
32 . The vascular graft of claim 27 , wherein said longitudinal strips of material are alternatingly woven over and under each successive ringed stent.
Claim 38
Dependent Claim
46 words
33 . The vascular graft of claim 32 , wherein said longitudinal strips of material are cut from a distal end of said first expanded polytetrafluoroethylene layer of material with a proximal end of said longitudinal strips attached to said first expanded polytetrafluoroethylene layer of material.
Claim 39
Dependent Claim
69 words
34 . The vascular graft of 32 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 40
Dependent Claim
69 words
34 . The vascular graft of 32 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 41
Dependent Claim
69 words
35 . The vascular graft of 33 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 42
Dependent Claim
69 words
35 . The vascular graft of 33 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 43
Dependent Claim
24 words
36 . The vascular graft of claim 27 , wherein both a proximal and a distal end of said vascular graft are fully encapsulated.
Claim 44
Dependent Claim
107 words
37 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer of material; a support layer having a plurality of ringed stents evenly spaced, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips of material that are alternatingly woven over and under each successive ringed stent; and a third expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced apart to cover a portion of an outer surface of the at least one stent, wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 45
Dependent Claim
107 words
37 . A vascular graft, comprising: a first expanded polytetrafluoroethylene layer of material; a support layer having a plurality of ringed stents evenly spaced, wherein said support layer is placed around said first expanded polytetrafluoroethylene layer; and a second expanded polytetrafluoroethylene layer comprising a plurality of longitudinal strips of material that are alternatingly woven over and under each successive ringed stent; and a third expanded polytetrafluoroethylene layer comprising a plurality of circumferential bands spaced apart to cover a portion of an outer surface of the at least one stent, wherein said second and third expanded polytetrafluoroethylene layers secure said support layer to said first expanded polytetrafluoroethylene layer.
Claim 46
Dependent Claim
47 words
38 . The vascular graft of claim 37 , wherein said longitudinal strips of material are cut from a distal end of said first expanded polytetrafluoroethylene layer of material, wherein a proximal end of said longitudinal strips is attached to said first expanded polytetrafluoroethylene layer of material.
Claim 47
Dependent Claim
69 words
39 . The vascular graft of 37 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 48
Dependent Claim
69 words
39 . The vascular graft of 37 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 49
Dependent Claim
69 words
40 . The vascular graft of 38 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 50
Dependent Claim
69 words
40 . The vascular graft of 38 , wherein a first longitudinal strip is woven over a first ringed stent, wherein a second longitudinal strip, adjacent to said first longitudinal strip, is woven under a first ringed stent, and wherein each successive adjacent odd numbered longitudinal strip is woven over a first ringed stent and each successive adjacent even numbered longitudinal strip is woven under a first ringed stent.
Claim 51
Dependent Claim
24 words
41 . The vascular graft of claim 37 , wherein said ringed stents are formed in a zigzag pattern of alternating peaks and valleys.
Claim 52
Dependent Claim
33 words
42 . The vascular graft of claim 41 , wherein said zigzag ringed stents are placed over said first expanded polytetrafluoroethylene layer with the alternating peaks and valleys of successive stents in phase.
Claim 53
Dependent Claim
17 words
43 . The vascular graft of claim 37 , wherein said ringed stents are made of metal.
Claim 54
Dependent Claim
24 words
44 . The vascular graft of claim 37 , wherein both a proximal and a distal end of said vascular graft are fully encapsulated.
Claim 55
Dependent Claim
107 words
45 . A method for making a partially encapsulated vascular graft, comprising: providing a generally tubular expanded polytetrafluoroethylene layer of material; placing a support layer comprised of a plurality of ringed stents over said tubular layer; cutting a plurality of slits in a terminal portion of said tubular layer not covered by said stents, resulting in a plurality of longitudinal strips; weaving said longitudinal strips alternatingly over and under each successive ringed stent, wherein a first longitudinal strip is woven over a first ringed stent, and wherein a second longitudinal strip is woven under the first ringed stent; and laminating said longitudinal strips to said tubular layer.
Claim 56
Dependent Claim
107 words
45 . A method for making a partially encapsulated vascular graft, comprising: providing a generally tubular expanded polytetrafluoroethylene layer of material; placing a support layer comprised of a plurality of ringed stents over said tubular layer; cutting a plurality of slits in a terminal portion of said tubular layer not covered by said stents, resulting in a plurality of longitudinal strips; weaving said longitudinal strips alternatingly over and under each successive ringed stent, wherein a first longitudinal strip is woven over a first ringed stent, and wherein a second longitudinal strip is woven under the first ringed stent; and laminating said longitudinal strips to said tubular layer.
Claim 57
Dependent Claim
55 words
46 . The method of claim 45 , further comprising the step of placing a plurality of expanded polytetrafluoroethylene circumferential bands over said support layer before said laminating step, wherein said plurality of circumferential bands are spaced apart so that each said circumferential band covers a portion of an outer surface of said ringed stents.
Claim 58
Dependent Claim
26 words
47 . The method of claim 45 , further comprising the step of fully encapsulating both a proximal and a distal end of said vascular graft.
Claim 59
Dependent Claim
40 words
48 . The method of claim 45 , wherein said ringed stents are formed in a zigzag pattern of alternating peaks and valleys and wherein said placing step further comprises placing said peaks and valleys of successive stents in phase.
References Cited (Backward Citations)
No citation records indexed.
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