Patent US3817393A successfully refreshed from Google Patents.
US5849037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-expanding stent for a medical device to be introduced into a cavity of a body, and method for its preparation
Assignee: Corvita Corp
•
Filing: 1996-04-03
•
Granted: 1998-12-15
•
Expires: 2016-04-03
Abstract
Abstract A self-expanding stent for a medical device to be introduced into a cavity of a human body, is disclosed and includes a radially expandable and axially retractable tubular body (1), characterized in that the tubular body comprises first filaments (2, 3) which are arranged side by side in a number at least equal to two, wound along a first helicoid direction around a longitudinal axis (4) of the tubular body, and second flexible rigid filaments (5, 6) which are arranged side by side in a number at least equal to two, wound along a second helicoid direction opposite to the first, each multiple filament wound in one of the said directions crossing multiple filaments wound in the other direction according to a plaited arrangement. Methods for reproducibly forming the stent of the invention are disclosed.
Inventors
- 👤 Noureddine Frid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; D; D04; D04C; D04C1/00; D04C1/06; A61F2230/00; A61F2230/0063; A61F2230/0073; A61F2230/0078; A61F2250/00; A61F2250/0014; A61F2250/0039
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
270 words
A self-expanding stent for introduction into a human or animal body, comprising: a tubular body (1) which is radially expansible and retractable between a first diameter (d), corresponding to a compressed state of said stent, and a second diameter (D), greater than said first diameter (d), corresponding to a resting state of said stent, and is axially expansible and retractable between a first length, corresponding to said compressed state, and a second length, less than said first length, corresponding to said resting state, said tubular body being formed by plaited filaments (2, 3, 5, 6), with a first plurality of said plaited filaments (2, 3) being arranged adjacently side by side substantially continuously along substantially their entire lengths in a number at least equal to two and forming first multiple filaments (2, 3) wound along a first helicoid direction around a longitudinal axis (4) of the tubular body (1), and a second plurality of said plaited filaments (5, 6) being arranged adjacently side by side substantially continuously along substantially their entire lengths in a number at least equal to two and forming second multiple filaments (5, 6) wound along a second helicoid direction opposite to said first helicoid direction, each multiple filament wound in one of the said helicoid directions crossing multiple filaments wound in the other helicoid direction according to a plaited arrangement, wherein all of said first multiple filaments together cross all of said second multiple filaments on the same side of said second multiple filaments, and said first multiple filaments are not twisted around one another and said second multiple filaments are not twisted around one another.
Claim 2
Dependent Claim
270 words
A self-expanding stent for introduction into a human or animal body, comprising: a tubular body (1) which is radially expansible and retractable between a first diameter (d), corresponding to a compressed state of said stent, and a second diameter (D), greater than said first diameter (d), corresponding to a resting state of said stent, and is axially expansible and retractable between a first length, corresponding to said compressed state, and a second length, less than said first length, corresponding to said resting state, said tubular body being formed by plaited filaments (2, 3, 5, 6), with a first plurality of said plaited filaments (2, 3) being arranged adjacently side by side substantially continuously along substantially their entire lengths in a number at least equal to two and forming first multiple filaments (2, 3) wound along a first helicoid direction around a longitudinal axis (4) of the tubular body (1), and a second plurality of said plaited filaments (5, 6) being arranged adjacently side by side substantially continuously along substantially their entire lengths in a number at least equal to two and forming second multiple filaments (5, 6) wound along a second helicoid direction opposite to said first helicoid direction, each multiple filament wound in one of the said helicoid directions crossing multiple filaments wound in the other helicoid direction according to a plaited arrangement, wherein all of said first multiple filaments together cross all of said second multiple filaments on the same side of said second multiple filaments, and said first multiple filaments are not twisted around one another and said second multiple filaments are not twisted around one another.
Claim 3
Dependent Claim
22 words
A stent according to claim 1, wherein: said tubular body formed by plaited multiple filaments has at least partially a cylindrical shape.
Claim 4
Dependent Claim
37 words
A stent according to claim 1, wherein: said tubular body has at least at one of its ends, in the resting state, a flaring (9, 10) in which said multiple filaments follow a helix with increasing radii.
Claim 5
Dependent Claim
26 words
A stent according to claim 3, wherein: said tubular body has a flaring at least at one of its ends which provides a substantially hyperboloid segment.
Claim 6
Dependent Claim
32 words
A stent according to claim 3, wherein: said tubular body includes multiple filaments oriented at an angle (α) of at most 45° with respect to a longitudinal axis of said tubular body.
Claim 7
Dependent Claim
28 words
A stent according to claim 5, further comprising: an expandable graft covering (8) on at least one of an inside and an outside surface of said tubular body.
Claim 8
Dependent Claim
32 words
A stent according to claim 1, wherein: said tubular body includes multiple filaments oriented at an angle (α) of at most 45° with respect to a longitudinal axis of said tubular body.
Claim 9
Dependent Claim
28 words
A stent according to claim 1, further comprising: an expandable graft covering (8) on at least one of an inside and an outside surface of said tubular body.
Claim 10
Dependent Claim
16 words
A stent according to claim 8, wherein: said multiple filaments are comprised of biocompatible metallic filaments.
Claim 11
Dependent Claim
16 words
A stent according to claim 1, wherein: said multiple filaments are comprised of biocompatible metallic filaments.
References Cited (Backward Citations)
US1920495A
Cited
US2836181A
Cited
US2977839A
Cited
US3105492A
Cited
US3095017A
Cited
US3317924A
Cited
US3463158A
Cited
US3272204A
Cited
US3304557A
Cited
US3526906A
Cited
US3485234A
Cited
US3585707A
Cited
GB1205743A
Cited
FR1602513A
Cited
US3562820A
Cited
US3479670A
Cited
US3580289A
Cited
US3509883A
Cited
US3626947A
Cited
US3710777A
Cited
US3730835A
Cited
US3878565A
Cited
US3868956A
Cited
US3822238A
Cited
US3974526A
Cited
US4044404A
Cited
US3929126A
Cited
US3993078A
Cited
US4355426A
Cited
US4459252A
Cited
US4106129A
Cited
US4173689A
Cited
US4134402A
Cited
US4134402B1
Cited
US4193138A
Cited
US4086665A
Cited
US4140126A
Cited
US4130904A
Cited
US4164045A
Cited
GB2015118A
Cited
US4323071A
Cited
US4323071B1
Cited
GB2033233A
Cited
DE3019996A1
Cited
GB2077107A
Cited
US4850999A
Cited
US4441215A
Cited
US4731073A
Cited
US4475972A
Cited
US4692141A
Cited
GB2135585A
Cited
US4954126A
Cited
US4655771A
Cited
US4954126B1
Cited
US4655771B1
Cited
US4503569A
Cited
US4610688A
Cited
US4583968A
Cited
US4743251A
Cited
US4787899A
Cited
US4871357A
Cited
US4878906A
Cited
US5061275A
Cited
WO1988000813A1
Cited
US4875480A
Cited
US4935006A
Cited
US5188593A
Cited
US4895561A
Cited
US5026377A
Cited
US5545208A
Cited
WO1991012779A1
Cited
US5279561A
Cited
US5242399A
Cited
US5078720A
Cited
US5064435A
Cited
EP0587197A1
Cited
US5330500A
Cited
US5160341A
Cited
US5116360A
Cited
US5197978A
Cited
US5197978B1
Cited
US5433723A
Cited
US5235966A
Cited
US5383892A
Cited
US5201757A
Cited
US5395390A
Cited
US5405378A
Cited
US5290295A
Cited
US5312415A
Cited
WO1994024961A1
Cited
EP0621015A1
Cited
US5360397A
Cited
US5415664A
Cited
US5397355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-14 | 2002-06-15 | 2002-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-14 | 2006-06-15 | 2006-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-14 | 2010-06-15 | 2010-12-15 | $7700.00 | Window Closed / Lapsed |