EP1164968A1 - Abgewinkelter vaskulärer stent - Google Patents
Abgewinkelter vaskulärer stentInfo
- Publication number
- EP1164968A1 EP1164968A1 EP00919898A EP00919898A EP1164968A1 EP 1164968 A1 EP1164968 A1 EP 1164968A1 EP 00919898 A EP00919898 A EP 00919898A EP 00919898 A EP00919898 A EP 00919898A EP 1164968 A1 EP1164968 A1 EP 1164968A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stent
- balloon
- angled
- bifurcation
- expandable
- 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.)
- Withdrawn
Links
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
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
Definitions
- the present invention relates to stent to be used in a bifurcating vessel, and, more particularly, to an expandable and deformable stent having a cylindrical body and an angled portion at one or both ends and a method for using same.
- a stent is used for treating occlusions, stenoses, or aneurysms in a blood vessel.
- the stent is compressed and implanted in a blood vessel, artery or vein, at the site of the stenosis or other restriction to reinforce and support collapsing, occluded or weakened sections of the vessel.
- the stent Once in position in the blood vessel, the stent is expanded, dilating the vessel at the site and enabling the blood to flow more freely through the vessel. While generally satisfactory for the treatment of sites in continuous or unbifurcated portions of the vessels, arteries or veins, prior art stents are not well suited where the site of the desired treatment is located at or across a bifurcation. One of the difficulties with conventional stents is that they are produced in a straight tubular configuration, employing features with "squared off ends".
- the implantation of the conventional stent in one branch at or near a bifurcation can result in either positioning a portion of one end of the stent extending into or across the bifurcation thereby obstructing or compromising the other branch and/or the bifurcation, restricting the blood flow and leading to an unfavorable result.
- the damaged or diseased bifurcating vessel is not fully treated.
- 4,994,071 discloses a bifurcating stent which includes a structure, particularly a series of interconnected loops defining a first flow path and an additional structure, using a second series of interconnected loops defining a second branching flow path. An interconnection joins the structures that define the first and second flow paths which is then bent to conform to the shape of the vessel.
- U.S. Patent No. 5,607,444 discloses an expandable stent which is constituted of a tubular member having and portion that is flared. The stent is placed within the bifurcated vessel to be repaired with the flared portion extending beyond the junction of the bifurcation and into the other branch.
- U.S. Patent No. 5,938,696 discloses stents for use at a bifurcation comprised of a first stent including a proximal engaging portion which may be flared and a second stent providing a cooperating portion to accept the engaging portion. In use at least one of the stents extends across the bifurcation into another branch vessel.
- the prior art stents do not satisfactorily correct the stenosis at the bifurcation.
- the present invention is directed to an angled stent device for treating one or more vessels at a bifurcation without blocking or restricting access or blood flow to the bifurcation or other vessels.
- the invention also provides a method for using the stent.
- the stent is comprised of an expandable cylindrical portion and an angled portion at one or both ends.
- the stent is constructed of a material capable of radial expansion and having sufficient strength to retain its shape after expansion and to support the most proximal end of the angled portion.
- the cylindrical portion has a symmetrical geometric pattern which facilitates the expansion while providing the required strength.
- the angled portion of the stent extends from the cylindrical portion, the angled portion being configured at an angle substantially approximating the angle established at the bifurcation by the junction of the bifurcated vessel and the other branch, once expanded. The expansion of the angled portion at or near the bifurcation is consistent with the expansion of the cylindrical portion.
- the angled portion has an asymmetrical geometric pattern and is constructed of the same material as the cylindrical portion.
- the angled portion may be constructed of a different material or may be implanted apart from the cylindrical portion.
- a preferred use of the angled stent is accomplished by means of a balloon catheter.
- the stent is arranged coaxially on the balloon with the angled portion on the proximal portion of the balloon and the cylindrical portion on the distal portion of the balloon. Alternatively, depending upon the introduction of the stent at the bifurcation, these position can be reversed.
- the balloon-stent assembly is arranged on the catheter and is advanced to the location of treatment within the vessel.
- a radio-opaque marker is arranged on one end of the balloon adjacent to the angled portion of the stent.
- a buttress or stop cap is arranged on the on the distal end of the balloon to retain the stent in position on the balloon.
- the desired location and orientation of the balloon-stent assembly is achieved by means of radiography.
- a stent according to the invention would have the advantage of fully treating the damaged or diseased vessel at or near the bifurcation without compromising or obstructing the blood flow in other portions of the bifurcation.
- a further advantage is that such stent will allow access to and will not interfere with any treatment introduced or delivered to the bifurcation or other vessel.
- Another advantage of a stent according to the invention is that such stents, having the same or different angles or shapes, or combination of angles or shapes, for example frustoconical, at one end may be used in more than one branch at a bifurcation without extending into, obstructing or compromising the bifurcation, and without overlapping an adjacent branch or stent.
- FIGS, la and lb show conventional stent devices of the prior art in an expanded configuration at a bifurcation;
- FIG. 2 is a side view of one embodiment of the angled stent device of the present invention in an unexpanded configuration;
- FIG. 3 is a side view of the unexpanded angled stent according to the present invention arranged on a balloon catheter;
- FIG. 4 shows a side view of the unexpanded angled stent of FIGS. 2 and 3, illustrating a preferred method of placement of the stent at a bifurcation;
- FIG. 1 shows conventional stent devices of the prior art in an expanded configuration at a bifurcation;
- FIG. 2 is a side view of one embodiment of the angled stent device of the present invention in an unexpanded configuration;
- FIG. 3 is a side view of the unexpanded angled stent according to the present invention arranged on a balloon catheter;
- FIG. 4 shows a side
- FIG. 5 shows one embodiment of the angled stent device of the present invention in an expanded configuration
- FIGS. 6 and 7 are side views of alternative embodiments of the present invention
- FIG. 8 shows another embodiment of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present invention includes a device and method for treating one or more vessels at a bifurcation without blocking or restricting access or blood flow to the bifurcation or other vessels.
- la and lb conventional stents 5 are produced in a straight tubular configuration having squared off ends 3.
- FIG. lb shows prior art stent 5 after expansion, positioned in bifurcated vessel 11 with the end 33 sufficiently remote from the bifurcation 10 and junction 17 so as not to extend into the bifurcation.
- angular stent 25 provides for the complete treatment of a diseased or damaged bifurcated vessel without obstructing the bifurcation.
- angular stent 25 is comprised of expandable cylindrical portion 26 and expandable angled portion 27 at the proximal end 33.
- the angular stent 25 is constructed of a material capable of radial expansion and having sufficient strength to retain its shape after expansion and to support the most proximal end of the angled portion 27.
- the cylindrical portion 26 has a symmetrical geometric pattern which facilitates the expansion while providing the required strength.
- the angled portion 27 of stent 25 extends from cylindrical portion 26, substantially parallel to longitudinal axis 28, end 33 of the angled portion 27 being configured at an angle substantially approximating the angle established at the bifurcation 10 by the junction 17 of the bifurcated vessel 11 and the other branches 12, 13, once expanded.
- the expansion of the angled portion 27 at or near the bifurcation 10 is consistent with the expansion of the cylindrical portion 26 of the stent.
- the stent may be produced having any angle or combination of angles at one or both ends.
- the stent and or angled portion of the stent best approximating the angle established by the junction of the vessel or vessels to be treated and the other branch or branches of the bifurcation may be selected for implantation.
- the angled portion 27 has an asymmetrical geometric pattern and is constructed of the same material as the cylindrical portion 26.
- the angled portion may be constructed of a different material or may be implanted apart from the cylindrical portion.
- a preferred use of the angled stent 25 according to the invention is accomplished by means of a balloon catheter 35.
- Unexpanded stent 25 is arranged coaxially on balloon 32 with the angled portion 27 at end 33 portion of the balloon 32 and the cylindrical portion 26 of the stent 25 at the distal portion 34 of the balloon.
- Tubular portion 36 extends from the end of balloon 32 as a conduit allowing for inflation and deflation.
- Guide wire 29 extends the length tubular portion 36 and balloon 32.
- expandable radio-opaque marker 30 is arranged at the end 33 of the balloon 32 adjacent to the angled portion 27 of the stent 25, the adjacent end of the marker 30' being angled correspondent to the end of angled portion of the stent.
- Proximal angular stop 30' may be arranged on balloon 32 between the end of the angled portion 27 and the radio-opaque marker 30' to maintain the alignment and positioning of the stent 25 on the balloon catheter 35.
- a buttress or stop cap 31 which may also be radio-opaque, is arranged on the on the distal end 34 of the balloon 32 to retain the stent 25 in position on the balloon. Further, the radio- opaque marker 30' and buttress or stop cap 31 enable the physician or radiographer to observe the placement and orientation of the stent and balloon catheter assembly within the arterial passageway and the bifurcated vessel. As shown in FIG. 4, the unexpanded stent 25 and balloon catheter 35 assembly is advanced, for example, through interior arterial passageway 16, to the intended location of treatment within the bifurcated vessel 11.
- the radio-opaque marker 30' and the stop cap 31 are observed and the unexpanded angular stent 25 is advanced into the desired position within the bifurcated vessel 11.
- balloon 32 is expanded, deploying the expanded angular stent 25 within the vessel 11 such that the end 33 of the angled portion 27 of the stent is in juxtaposition with junction 17 of bifurcation 10 and together with the cylindrical portion 26 fully supports the damaged or diseased portion of the bifurcated vessel 1 1 without extending across or into the bifurcation 10 or the other vessels 12, 13.
- the balloon is deflated and the balloon, radio-opaque marker, stop cap and catheter are removed from the patient, as shown in FIG. 5.
- diseased or damaged vessel 11 is completely treated and blood flow is not obstructed or restricted by any portion of the stent or overlapping, allowing access for any treatment introduced or delivered to the bifurcation or other vessels without interference.
- the arrangement of the stent, the radio-opaque marker and the stop cap on the balloon catheter may be reversed.
- Another embodiment of the present invention is the use of angular stents in two branches of the bifurcation. FIG.
- FIG. 6 shows a dual stent application in accordance with the invention. Similar to the implantation of angled stent 25 in the bifurcated vessel 11 as depicted in FIGS. 3 and 4, the angular stents in a dual application may completely treat the diseased or damaged sites without interfering with or overlapping the other stent and without extending into the bifurcation or otherwise obstructing or restricting the blood flow.
- FIG. 7 depicts another embodiment, an angular stent 25 according to the invention, after expansion is in position in the bifurcated vessel 11 and a conventional stent 5, is implanted in the bifurcation. In this way the bifurcation is treated and the stents are not compromised.
- FIG. 8 shows dual angular stents 25 implanted and deployed in branches 11 and 12.
- Stent 25' including an angled portion 27 having a frustoconical configuration 40 is implanted in other branch 13.
- the end 40 of the angled portion of stent 25' extends into the bifurcation, as a result of the configuration of the angled stents the diseased or damages vessels are completely treated without any such stent obstructing or compromising the bifurcation or overlapping an adjacent branch or stent.
- the angular stent according to the invention enable full treatment of the damaged or diseased vessel at or near the bifurcation without compromising or obstructing the blood flow in other portions of the bifurcation vessel. It will also be appreciated that the angular stent according to the invention may be produced having a variety of angles or combination of angles or shapes, and may be used in more than one branch at a bifurcation without extending into, obstructing or compromising the bifurcation, and without overlapping an adjacent branch or stent. Although described in terms of the presently preferred embodiment, those skilled in the art will appreciate that the present invention is not limited to the embodiment described.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12691199P | 1999-03-30 | 1999-03-30 | |
US126911P | 1999-03-30 | ||
PCT/US2000/008482 WO2000057813A1 (en) | 1999-03-30 | 2000-03-29 | Angular vascular stent |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1164968A1 true EP1164968A1 (de) | 2002-01-02 |
Family
ID=22427343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00919898A Withdrawn EP1164968A1 (de) | 1999-03-30 | 2000-03-29 | Abgewinkelter vaskulärer stent |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1164968A1 (de) |
AU (1) | AU4051700A (de) |
WO (1) | WO2000057813A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9427340B2 (en) | 2004-12-14 | 2016-08-30 | Boston Scientific Scimed, Inc. | Stent with protruding branch portion for bifurcated vessels |
US8216267B2 (en) | 2006-09-12 | 2012-07-10 | Boston Scientific Scimed, Inc. | Multilayer balloon for bifurcated stent delivery and methods of making and using the same |
WO2009140719A1 (en) * | 2008-05-23 | 2009-11-26 | Neustent Pty Ltd | Fabricating a stent |
US8932340B2 (en) | 2008-05-29 | 2015-01-13 | Boston Scientific Scimed, Inc. | Bifurcated stent and delivery system |
US10092427B2 (en) | 2009-11-04 | 2018-10-09 | Confluent Medical Technologies, Inc. | Alternating circumferential bridge stent design and methods for use thereof |
CN102068331B (zh) * | 2010-04-20 | 2013-08-07 | 上海微创医疗器械(集团)有限公司 | 一种分叉血管支架 |
US8864811B2 (en) | 2010-06-08 | 2014-10-21 | Veniti, Inc. | Bi-directional stent delivery system |
US9301864B2 (en) | 2010-06-08 | 2016-04-05 | Veniti, Inc. | Bi-directional stent delivery system |
US9233014B2 (en) | 2010-09-24 | 2016-01-12 | Veniti, Inc. | Stent with support braces |
WO2012047308A1 (en) | 2010-10-08 | 2012-04-12 | Nitinol Devices And Components, Inc. | Alternating circumferential bridge stent design and methods for use thereof |
CN102462563B (zh) * | 2010-11-12 | 2015-11-11 | 上海微创医疗器械(集团)有限公司 | 一种分叉血管支架 |
US9254208B2 (en) * | 2013-03-14 | 2016-02-09 | Thomas Ischinger | Oblique stent |
SI3302372T1 (sl) | 2015-07-23 | 2019-09-30 | Optimed Medizinische Instrumente Gmbh | Žilna opornica |
US9937333B2 (en) | 2015-09-01 | 2018-04-10 | Thomas Ischinger | Balloon catheter for treatment of a vessel at a bifurcation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4994071A (en) | 1989-05-22 | 1991-02-19 | Cordis Corporation | Bifurcating stent apparatus and method |
US5607444A (en) | 1993-12-02 | 1997-03-04 | Advanced Cardiovascular Systems, Inc. | Ostial stent for bifurcations |
US5609627A (en) | 1994-02-09 | 1997-03-11 | Boston Scientific Technology, Inc. | Method for delivering a bifurcated endoluminal prosthesis |
CA2175720C (en) * | 1996-05-03 | 2011-11-29 | Ian M. Penn | Bifurcated stent and method for the manufacture and delivery of same |
US5893887A (en) * | 1997-10-14 | 1999-04-13 | Iowa-India Investments Company Limited | Stent for positioning at junction of bifurcated blood vessel and method of making |
-
2000
- 2000-03-29 WO PCT/US2000/008482 patent/WO2000057813A1/en not_active Application Discontinuation
- 2000-03-29 AU AU40517/00A patent/AU4051700A/en not_active Abandoned
- 2000-03-29 EP EP00919898A patent/EP1164968A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0057813A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000057813A1 (en) | 2000-10-05 |
WO2000057813A9 (en) | 2002-01-31 |
AU4051700A (en) | 2000-10-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2392621T3 (es) | Aparato para desplegar cánulas | |
US7118593B2 (en) | Extendible stent apparatus | |
US7678142B2 (en) | Extendible stent apparatus | |
US7591846B2 (en) | Methods for deploying stents in bifurcations | |
EP1152711B1 (de) | Bifurkationsstenteinführsystem | |
US7105015B2 (en) | Method and system for treating an ostium of a side-branch vessel | |
US7018400B2 (en) | Endolumenal prothesis and method of use in bifurcation regions of body lumens | |
US6099558A (en) | Intraluminal grafting of a bifuricated artery | |
US5797949A (en) | Method and apparatus for implanting a prosthesis within a body passageway | |
EP0757571B1 (de) | Endoprothesen und stents | |
EP1047356B1 (de) | Ausweitbarer stent | |
US7875071B2 (en) | System and method for delivering a bifurcated stent | |
WO1999036002A1 (en) | Extendible stent apparatus | |
JPH1119219A (ja) | ステント | |
JP2002516704A (ja) | 変形可能な支持用多細胞型ステント | |
WO2001060284A1 (en) | Endolumenal device for delivering and deploying an endolumenal expandable prosthesis | |
EP1164968A1 (de) | Abgewinkelter vaskulärer stent | |
US20070288081A1 (en) | Stent delivery system having a stent stopper | |
KR20020064882A (ko) | 차등 팽창하는 스텐트 및 사용 방법 | |
US9687239B2 (en) | Intravascular devices supporting an arteriovenous fistula | |
EP1905398B1 (de) | Ausziehbare Stentvorrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20010911 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20031001 |