CA2168121C - Stent with an end of greater diameter than its main body - Google Patents

Stent with an end of greater diameter than its main body Download PDF

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Publication number
CA2168121C
CA2168121C CA002168121A CA2168121A CA2168121C CA 2168121 C CA2168121 C CA 2168121C CA 002168121 A CA002168121 A CA 002168121A CA 2168121 A CA2168121 A CA 2168121A CA 2168121 C CA2168121 C CA 2168121C
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CA
Canada
Prior art keywords
stent
ribs
stent according
free spaces
vessel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002168121A
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French (fr)
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CA2168121A1 (en
Inventor
Josef Lindenberg
Wolfram Schnepp-Pesch
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Angiomed GmbH and Co Medizentechnik KG
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Angiomed GmbH and Co Medizentechnik KG
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Application filed by Angiomed GmbH and Co Medizentechnik KG filed Critical Angiomed GmbH and Co Medizentechnik KG
Publication of CA2168121A1 publication Critical patent/CA2168121A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
    • A61F2002/91541—Adjacent bands are arranged out of phase
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0054—V-shaped

Abstract

For the better anchoring of a stent in its use area within a vessel, in t he case of a stent expandable from a radially contracted introduction state int o a radially expanded position state, in the radially expanded state at least on e front end of the stent has a greater diameter than the remaining main stent body with ribs of the front end being longer than those in the main stent body.

Description

CA 02168121 2005-04-20 . - , .- -Stent with an end of greater diameter than its main body Field of the Invention Tho~.inventi4a xalates.to a ~tsnt for dilating and keeping open vessels, with a radially contracted sr~xte for introduction into the vessel and with a radially expanded aGate after introduction into the vessel.
Related Art Sucn xtents or im~glantable~cathetera to be introduced in~o a body cavity, a vessel or the like crib be made from plastic or an inert metal, such as sCeoi or nickel-titanium alloys. Snch atents are also referred to as endovascular or andolumiaal sCSats or~eadopxoatheeea. Fox exaapls i~hen dilating the ureter the scents ara uaQd in zhe prostate region is the, case cf benign pros-tote iyparplaa~,a t~~) or also 3n sclerotic blood ves~eis fo~c diiaring and keeping open the aatma~ The steers Rave staterial areas. and gaps between Ahem.
Thus, is is poosible for thr wall tissue of the organ kept open to $row xound the scent. Scents cari have a spf.xal construction or can be in the form of a helicallyaouad call. They can ~ be made from ~ ~rovon or knitted wire or plas t~.c matQrial. Such scents can have memoxy propert~.es, such as e.g: exist yrith certainvnickel--titanf.~ uiloye (rLit3.nol) . . -Sammary of the Invention ~.'he Stent of the invention having an cad of greater diameter than its main body ensures a secure anchoring of such sterit in the vessel to be dilated.
According to tho invention the net problem is solved in the case of. such a $tent in chef 3,n the radialZy expandGd,.state at lsa t ons front end has a gxeater rada:el extension chart Lhe remair~i.ag main body of the steat.
In the cast of a steer, which is forr4ed by ribs and free spaces left batween~
the same, xccordin$ to a preferred development of zhe invention in the wicin~
ity of et leant one front cad of t'he steer the ribs 'have a greater ~.i~r~gth than corresponding ribs of the sale stent'body and in particular the length of the rigs in thd fxoat resign can be 1~0 po 19076 of the length of the ribs i:~ the main ateht regiat~-Actcrdi~ng to further preferred devslo~menta ~of tho iaven~,i.on, in the front aide areas the ribs extrnd rsc~ia).ly further,ontwarda than the =ibs in the main scent a~eaa sad the ribs in the front,a3de area for~a a.finite angle to zhe major axis of the scent. . ~ .~ ' . . , _ 2 ..
The fret spaces can either be diamond-shaped dr honeycombed: The stent ~.s preferably self-s~tpanding and, in a preferred davelapment not sole3,y due to elastic properties and introduttioa in a start under radial tension, bnt as 8 result of tht fact that it is made front a memory metal.
In order to attain a gxsater behdability.arid fiextbility of the atent, acaax-di,ng to a further pre=erred development, between axially succeeding ri,ba are provided in part gaps and ie par4 eonriecting areas. This 3.s achieved by a higher flexibility Chas ~routd be the case lriLh a ,scent in which at~~.hlzy sutcc-eeding ribs were f~.rmly intercoanetted in the conrietting areas. There is also no cross-sectional defotatation r~hen bending under the action of vertical axial forces.
Due to the fact that the atent is constructed is single layer form, a high bendability is obtained without metal Crossing points, such as ~.s the case with 1~n3.tted and braided structures and the. like, t~hich give irise to a greater materia3. thickness. There sae be a better grow~.ng i.n of the steer according to the ~:aventiol~ 3ttto the tissue. iht risk of thromboses occurring, , pertic--ularly is the vascular area is significantly reduced or uirtuahly excluded.
In a preferred development, the connecting t~reas are tireumf~rerctially mutu-ally displaced. Th3~ waads to the retention or obtaining of the desired axial sxrengrh .(i.e. against compression and tenaian in the axial direction) in the ease of bending re:istance perpendicular to zhe axis.
According tv further preferred devs7.oppants the scent is made from ~3,at plate from which are cut s7:ots far forming the~gape, the fiat.pzates teeing Connected.
togtthar, particularly by t~l.ding, in the aar$3.na1 areas of tar be~iøing to a cylindrical contour ~tnd the free spaces are.pormed by slots a~tsir heat trest-. meet. . ~ ; ' .
Brief Description of the Drawin s Further advantages and features of.tha'inventian,~an be gathered,fran the clsims.and doscripti~n of ~t preferred embodiment,of the invention, with refer' eace 'co the dravrings, wherein show: ; _ , ' ' . . . . : .;~ ' :. .. .. ,, -' ;. ~ , A. . .

.
a __- j /
- ~ - , Fig. 1 A preferred developasant of the stent according to the invention in its radially contracted low temperature or introduction state.
fig, 2 The anent aCtording to the invention in its radiaZly expanded high t~perature or use state. .
l~i,g. 3 A highly diagraatiaatic representation of part. of x stent for iLlu~stxating the design on the front ends.
Detailed Description of the Preferred Embodiments Its ita.radially contracted state !or introduction into the weasel to be diia-tad, the_ atent 1 accordiag-to the invention has a cylindrical shape or an outer contour as shown in fig. 1. In the Gxpanded state the scent 1~ according to thr inv~~ttian has oust the length 'L of its main body, i.e, its~gxeatest lsitgth, a cyl.indrital outer contour. However, in the vicinity of its tt~to ixont ands lb, lc, the scent according to the invention is radial.ly e~cpartded over the radial dimena.ions, i.e. the diameter D of the main body la, so that tha~ateat 1 can be,anchored with its radially expandad~ends Ib, lc on the vessel gall. .
~As is in particular wade clear by ~ig~ 2, the scent 1 according to the inven-Lion is formed from a plurality o~ maunder paths arranged successively over the.circumferenca of the atent 1 fn th! form of anguiarly interconnected ribs 2 ox 2a or 2b in the connecting ox tip regions 3, 3a, 3'a, 3b. Zn the ri~rcun farentiai direction the meander pasha ar ribs 2, 2n, 2b~are so arranged that in each sane facing, adjacent connecting.or tip regions.3,.3a o~r 3'a, 3b of ~tnctapased mcandax paths or ribs 2. 2a. ab are axially aliened.:
Fig. 2 also cRearly shows that the axially succeeding-meander paths Formed by .
the-ribs 2, 2a, Zb in the vicinity of their tip.or contteCtlng regions 3, 3a, 3'a. 3b era not intercaanacted by transitions 4, Aa, 4b, ac, 4d, but iw the circnuafarential direction- bet~oaen such transitions 4 to 4d of two att3acent meander path~t-formed by the ribs 2,.xa are located several gaps ~, 5', 5a, ~D, fib', etc~v The txanaition areas 4 to 4d xnd~gags: s to ~b'~are jointly also referred to as nodal erase. , Gonaiderad in another way; the scent according to the invention can be so . .. . ; . . ., ~ . ., .
h. ' , ~ ~ ,.. . . . ».

understood that it iS ~o~ed by ribs 2, 2a, Zb and free spaces 6, ba farmed between them, tie free spares 6, 6a in the embodinent shoTaa. having the contour ofwa diationd, i.e. are baandea by four rib areas, but coi:.Id also be shaped like a honeycomb, that being bounded by sfx r=b areas. the nodal areas in this case are partly left as connections ~ to ~d, whereas in other axeas they sre split by the gaps ~ to 5b'. The connections or transitions ~ to 4d axe fat axia?3y aligned, but are in each case anoalar?y or circunferentialiy dis-placed.
The gaps ~ to S'a', etc. lead to a high flexibility of the stem according to the in~entio~. 'It is in partic=,ilar attained that the scent I, an bending perpendicuyar to its ionQitudiZal axis A and therefore bending of the longi-tudinal axis itself does not kink or bend in in the central area in such a way that it loses its c:oss~sectionally ssbstant_a_ly c'rcular contour and in the action direction of the ioxCes is centrally pressed flat and perpendicular to the action direction of the forces is w~ dened roughly in the centre of its longitudinal extensiaZ, as occurs with conventional scents, wh4re alI the facing, adjacent tin or connecting areas 3, 3a, etc. in axially juxtaposed aeander turns are firmly connected by connecting areas or transitions G, 4a.
The connectinfi areas or transitions ~, Via, ett. are constructed in one piece with the reaainine parts of the scent, particularis the ribs 2, 2a, etc- and their is each case adjacent tip ar connecting areas 3, 3a.
Fig. 1 shows that the substantially diaaand-shaped free spaces (fig. ~) foruted between the ribs 2, 2a, etc. of the neander paths ;n the high temper-ature position taper to slots in the low temperature or int=aductzon position and the rsbs 2, etc. of the meander paths are substantiall5r paxallel to one another.
Fig. 3 sore particularly shows that the length of the ribs 2 of the outer or frontal Meander a=eas is much greater than the ribs 2a, 2b in the main body is of the scent I according to the invention. The length of the end ribs 2 c,an be between IZO and 200 of the xfbs 2a to 2c of the main body. The length ratio can largely be chosen at random and is determined iry the permitted expansion, the ueaes8ary stent length and the desired radial dilation of the end regions ib; is over the main body Ia of the scent I.

.-- ~ 5 -The stent 1 accordio.g to the invention is made from a nickel-titanium alloy, suGa as n3.tinol. It is produced ir. such a way that the metal piat.e or sheet is initially very accurately etched to ti~2 desired thickness, namely With a Col.erance range of 0.001 ~. :he parts forn~,rcg the slept are then cut fzom a ~.arge-area pl3te~ Zn said plate parts are then c~a the openings or slots in such a Way that Gixtumferential~.y adzacent slots aYe in each case axial=y displaced by half their length. T;~e cutting of the slots takes place by means of a laser. In the cer~trai area of each slot the latter is provided ur~,4n an expansion, so that the material bounding the latter in the c~.rCUmferential d,~.rettion is reduced roughly to the ta-ydth of the material remaining between the slots. 2'hese portions, :f left standing, subsequently form the connecting portions 4, 4a, or tine f=ee spaces or gaps 5, 5a, etc. are created in their az'eas if the portions are removed. After cutting the slots the cutout parts ate broken off and the slotted plate is debarred. the slotted plate is rhea 33en,t to a cylinder, so that tae lateral edges are in contact. Welds are then ~a.de on tongues or f7.ags, so that the stent is obtained in its low temperature position according to fig. i. This is followed by a heat treatment, in order to give the stent memory prdperties, so that after raising the temperature above a predetermined aabient temperature, whic'n is we~.l below the tempErature of the human body, it tan dilate to its high temperature position according to fig. 2, wizith ~.t reaches at the latest at 35°C.
After producing and heat treating the scent in this way, the bridges are removed in the desired ttat~ner, so that the connecting areas or webs 4, 4a or free spaces 5, 5', 5a, etc. are fortaed, as described here_abefore_ This is followed by grinding and poitshi.ng, preferably in a rotary drug machine. the stents are then checked for dinensivns, function and setting. This is foll-owed by cleaning in an ultrasonic bath, initially with a soap solution, then with distilled water and iitsa~.ly naith alcohol.
i

Claims (12)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. Stent for dilating and keeping open a vessel, said stent comprising a body with means for permitting the stent to be radially contracted to a radially contracted state for introduction into the vessel and to be radially expanded to a radially expanded state after introduction into the vessel, and wherein said stent in the radially expanded state having at least one front end which has a greater diameter than a remaining body of the stent between its ends, wherein said body has ribs and free spaces between said ribs, and wherein ribs of said at least one front end of the stent have a greater length than the ribs of the remaining body of the stent between its ends.
2. The Stent according to claim 1, wherein the length of the ribs in said front-end is 120 to 190% of the length of the ribs in said remaining body of the stent.
3. The Stent according to claim 1 wherein said front end ribs extend further radially outward than the ribs in said remaining body of the stent.
4. The Stent according to claim 1, wherein the ribs in said front end form a finite angle with a major axis of the stent.
5. The Stent according to claim 1 wherein said free spaces are diamond-shaped.
6. The Stent according to claim 1, wherein said stent is self-expanding.
7. The Stent according to claim 1, wherein said stent is made from a memory metal.
8. The Stent according to claim 1, wherein said ribs of said stent form a plurality of meander paths arranged successively in the axial direction of said stent and spanning its circumference, and wherein between axially succeeding ribs of axially adjacent meander paths there are gaps and connecting areas.
9. The Stent according to claim 8, wherein the connecting areas are circumferentially displaced from one another with said gaps intervening.
10. The Stent according to claim 1, wherein said stent body is made from a flat plate from which slots are cut for forming gaps as said free spaces, the said flat plate having lateral edges which are connected together, following bending of said flat plate to a cylindrical contour.
11. The Stent according claim 1, wherein said free spaces are formed by slots in said body after heat treatment.
12. The Stent according to claim 1, wherein said stent is constructed in single layer form.
CA002168121A 1994-05-26 1995-05-20 Stent with an end of greater diameter than its main body Expired - Fee Related CA2168121C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP4418336.4 1994-05-26
DE4418336A DE4418336A1 (en) 1994-05-26 1994-05-26 Stent for widening and holding open receptacles
PCT/EP1995/001925 WO1995032688A1 (en) 1994-05-26 1995-05-20 Stent

Publications (2)

Publication Number Publication Date
CA2168121A1 CA2168121A1 (en) 1995-12-07
CA2168121C true CA2168121C (en) 2006-02-21

Family

ID=6518991

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002168121A Expired - Fee Related CA2168121C (en) 1994-05-26 1995-05-20 Stent with an end of greater diameter than its main body

Country Status (8)

Country Link
US (2) US5716393A (en)
EP (1) EP0711135B2 (en)
JP (1) JPH09501089A (en)
AT (1) ATE187054T1 (en)
CA (1) CA2168121C (en)
DE (2) DE4418336A1 (en)
ES (1) ES2141946T5 (en)
WO (1) WO1995032688A1 (en)

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US7959664B2 (en) 1996-12-26 2011-06-14 Medinol, Ltd. Flat process of drug coating for stents
US8828077B2 (en) 2006-03-15 2014-09-09 Medinol Ltd. Flat process of preparing drug eluting stents

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US5913897A (en) * 1993-09-16 1999-06-22 Cordis Corporation Endoprosthesis having multiple bridging junctions and procedure
US7204848B1 (en) 1995-03-01 2007-04-17 Boston Scientific Scimed, Inc. Longitudinally flexible expandable stent
US6818014B2 (en) 1995-03-01 2004-11-16 Scimed Life Systems, Inc. Longitudinally flexible expandable stent
US20070073384A1 (en) * 1995-03-01 2007-03-29 Boston Scientific Scimed, Inc. Longitudinally flexible expandable stent
CA2186029C (en) * 1995-03-01 2003-04-08 Brian J. Brown Improved longitudinally flexible expandable stent
US6579314B1 (en) * 1995-03-10 2003-06-17 C.R. Bard, Inc. Covered stent with encapsulated ends
US6264684B1 (en) 1995-03-10 2001-07-24 Impra, Inc., A Subsidiary Of C.R. Bard, Inc. Helically supported graft
US6451047B2 (en) 1995-03-10 2002-09-17 Impra, Inc. Encapsulated intraluminal stent-graft and methods of making same
US5769882A (en) 1995-09-08 1998-06-23 Medtronic, Inc. Methods and apparatus for conformably sealing prostheses within body lumens
US6193745B1 (en) * 1995-10-03 2001-02-27 Medtronic, Inc. Modular intraluminal prosteheses construction and methods
CA2234389A1 (en) 1995-10-13 1997-04-17 Transvascular, Inc. A device, system and method for interstitial transvascular intervention
US6348066B1 (en) 1995-11-07 2002-02-19 Corvita Corporation Modular endoluminal stent-grafts and methods for their use
US6576009B2 (en) 1995-12-01 2003-06-10 Medtronic Ave, Inc. Bifurcated intraluminal prostheses construction and methods
AU723785B2 (en) 1996-02-02 2000-09-07 Transvascular, Inc. Methods and apparatus for connecting openings formed in adjacent blood vessels or other anatomical structures
NZ331269A (en) * 1996-04-10 2000-01-28 Advanced Cardiovascular System Expandable stent, its structural strength varying along its length
US6241760B1 (en) * 1996-04-26 2001-06-05 G. David Jang Intravascular stent
US20040106985A1 (en) * 1996-04-26 2004-06-03 Jang G. David Intravascular stent
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