US6355059B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serpentine coiled ladder stent
Assignee: Medinol Ltd
•
Filing: 1998-12-03
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Granted: 2002-03-12
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Expires: 2018-12-03
Abstract
Abstract A serpentine coiled ladder stent is provided, in which the coil is formed from a wound strip of cells, wherein the sides of the cells are serpentine. Thus, the stent is comprised of a strip helically wound into a series of coiled windings, wherein the strip is formed of at least two side bands connected to each other, for example by a series of cross struts. Each side band is formed in a serpentine pattern comprising a series of bends, wherein upon expansion of the stent, the bends of the side bands open to increase the length of each of the individual cells in the helical direction, thereby lengthening the strip in the helical direction to allow the stent to expand without any significant unwinding of the strip.
Inventors
- 👤 Jacob Richter
- 👤 Gregory Pinchasik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/88; A61F2002/91508; A61F2002/91516; A61F2002/91525; A61F2002/91533; A61F2002/9155
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
130 words
A stent comprised of a strip helically wound into a series of coiled windings, wherein the strip has at least two side bands, wherein each of the at least two side bands is formed in a serpentine pattern comprising a series of bends, wherein the at least two side bands of the strip are connected to each other, and wherein upon expansion of the stent, the bends of the at least two side bands open to lengthen the strip in the helical direction to allow the stent to expand without any significant unwinding of the strip, wherein the strip has two ends, wherein the at least two side bands converge toward each other at the two ends of the strip, so that the two ends of the strip are tapered.
Claim 2
Dependent Claim
130 words
A stent comprised of a strip helically wound into a series of coiled windings, wherein the strip has at least two side bands, wherein each of the at least two side bands is formed in a serpentine pattern comprising a series of bends, wherein the at least two side bands of the strip are connected to each other, and wherein upon expansion of the stent, the bends of the at least two side bands open to lengthen the strip in the helical direction to allow the stent to expand without any significant unwinding of the strip, wherein the strip has two ends, wherein the at least two side bands converge toward each other at the two ends of the strip, so that the two ends of the strip are tapered.
Claim 3
Dependent Claim
23 words
A stent as claimed in claim 1 , wherein the cross struts connect adjacent bends on the at least two serpentine side bands.
Claim 4
Dependent Claim
23 words
A stent as claimed in claim 2 , wherein the adjacent bends that are connected by each cross strut face in opposite directions.
Claim 5
Dependent Claim
43 words
A stent as claimed in claim 2 , wherein the cross struts connect the at least two serpentine side bands at periodic intervals, and wherein each of the at least two serpentine side bands has at least one bend between sequential cross struts.
Claim 6
Dependent Claim
14 words
A stent as claimed in claim 2 , wherein the cross struts are straight.
Claim 7
Dependent Claim
31 words
A stent as claimed in claim 1 , wherein the at least two serpentine side bands are connected to each other by cross struts and wherein the cross struts have bends.
Claim 8
Dependent Claim
25 words
A stent as claimed in claim 2 , wherein the cross struts extend generally perpendicularly to the helical direction in which the strip is wound.
Claim 9
Dependent Claim
61 words
A stent as claimed in claim 1 , wherein the strip has two ends, the first end of the strip being located at a first end of the stent and the second end of the strip being located at a second end of the stent, and wherein each end of the strip is joined to an adjacent winding of the stent.
Claim 10
Dependent Claim
22 words
A stent as claimed in claim 8 , wherein each end of the strip is joined to the adjacent winding by welding.
Claim 11
Dependent Claim
15 words
A stent as claimed in claim 1 , wherein the strip is made of wire.
Claim 12
Dependent Claim
16 words
A stent as claimed in claim 1 , wherein the strip is made from flat metal.
Claim 13
Dependent Claim
29 words
A stent as claimed in claim 1 , wherein the stent is made by manufacturing the strip and then winding the strip in a helix to form the stent.
Claim 14
Dependent Claim
25 words
A stent as claimed in claim 1 , wherein the two ends of said strip taper to the extent that the two side bands meet.
Claim 15
Dependent Claim
15 words
A stent as claimed in claim 8 wherein the ends of said stent are smooth.
Claim 16
Dependent Claim
138 words
A stent comprising: a strip having two ends helically wound into a series of coiled windings, the strip including: at least two side bands which are spaced apart, each of the at least two side band being formed in a serpentine pattern comprising a series of bends, connectors periodically connecting the at least two side bands of the strip to each other, and the at least two side bands converge toward each other at the two ends of the strip, so that the two ends of the strip are tapered to the extent that the two side bands meet, and where in upon expansion of the stent, the bends of the at least two side bands open to lengthen the strip in the helical direction to allow the stent to expand without any significant unwinding of the strip.
Claim 17
Dependent Claim
138 words
A stent comprising: a strip having two ends helically wound into a series of coiled windings, the strip including: at least two side bands which are spaced apart, each of the at least two side band being formed in a serpentine pattern comprising a series of bends, connectors periodically connecting the at least two side bands of the strip to each other, and the at least two side bands converge toward each other at the two ends of the strip, so that the two ends of the strip are tapered to the extent that the two side bands meet, and where in upon expansion of the stent, the bends of the at least two side bands open to lengthen the strip in the helical direction to allow the stent to expand without any significant unwinding of the strip.
Claim 18
Dependent Claim
57 words
A stent as claimed in claim 15 , wherein a first end of the strip is located at a first end of the stent and a second end of the strip is located at a second end of the stent, and wherein each end of the s trip is joined to an adjacent winding of the stent.
Claim 19
Dependent Claim
22 words
A stent as claimed in claim 16 , wherein each end of the strip is joined to the adjacent winding by welding.
Claim 20
Dependent Claim
23 words
A stent as claimed in claim 15 , wherein the cross struts connect adjacent bends on the at least two serpentine side bands.
Claim 21
Dependent Claim
24 words
A stent as claimed in claim 18 , wherein the adjacent bend s that are connected by each cross strut face in opposite directions.
Claim 22
Dependent Claim
43 words
A stent as claimed in claim 18 , wherein the cross struts connect the at least two serpentine side bands at periodic intervals, and wherein each of the at least two serpentine side bands has at least one bend between sequential cross struts.
Claim 23
Dependent Claim
14 words
A stent as claimed in claim 18 , wherein the cross struts are straight.
Claim 24
Dependent Claim
31 words
A stent as claimed in claim 21 , wherein the at least two serpentine side bands are connected to each other by cross struts and wherein the cross struts have bends.
Claim 25
Dependent Claim
25 words
A stent as claimed in claim 18 , wherein the cross struts extend generally perpendicularly to the helical direction in which the strip is wound.
Claim 26
Dependent Claim
15 words
A stent as claimed in claim 15 , wherein the strip is made of wire.
Claim 27
Dependent Claim
16 words
A stent as claimed in claim 15 , wherein the strip is made from flat metal.
Claim 28
Dependent Claim
29 words
A stent as claimed in claim 15 , wherein the stent is made by manufacturing the strip and then winding the strip in a helix to form the stent.
Claim 29
Dependent Claim
15 words
A stent as claimed in claim 16 wherein the ends of said stent are smooth.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-03-11 | 2005-09-10 | 2006-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-11 | 2009-09-10 | 2010-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-11 | 2013-09-10 | 2014-03-12 | $7700.00 | Window Closed / Lapsed |