DE10150547B4 - stent - Google Patents
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- Publication number
- DE10150547B4 DE10150547B4 DE2001150547 DE10150547A DE10150547B4 DE 10150547 B4 DE10150547 B4 DE 10150547B4 DE 2001150547 DE2001150547 DE 2001150547 DE 10150547 A DE10150547 A DE 10150547A DE 10150547 B4 DE10150547 B4 DE 10150547B4
- Authority
- DE
- Germany
- Prior art keywords
- struts
- stent
- ring segment
- connector
- shaped
- 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
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
- 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
-
- 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
-
- 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
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Optics & Photonics (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Stent zum Anordnen in einer Körperröhre mit einem tubulären Stützgerüst aus mindestens zwei Ringsegmenten (2, 3, 4), die aus mäanderförmig sich über Bogenabschnitte (5, 5; 6, 6') endlos aneinanderschließenden Schrägstreben (7, 8) gebildet und benachbarte Ringsegmente (2, 3 bzw. 3, 4) durch Verbinderstreben (9) gekoppelt sind, wobei die Bogenabschnitte (5, 6) zwischen zwei Schrägstreben (7, 8) relativ zu den in Umfangsrichtung benachbarten Bogenabschnitten (5', 6') eines Ringsegments (2, 3, 4) in Stentlängsachse (LA) versetzt angeordnet sind, dadurch gekennzeichnet, dass die in einem Ringsegment (2, 3, 4) jeweils aufeinander folgenden Schrägstreben (7, 8) unterschiedlich lang sind und dass die Verbinderstreben (9) sich jeweils von der Spitze (13) zweier V-förmig aneinanderschließender Schrägstreben (7, 8) eines Ringsegments (3, 4) in das Tiefste (14) zweier V-förmig aneinanderschließender Schrägstreben (7, 8) eines benachbarten Ringsegments (2, 3) erstrecken, wobei jede Verbinderstrebe (9) einen parallel zur Stentlängsachse (LA) verlaufenden Longitudinalabschnitt (10) und einen quer hierzu ausgerichteten...stent for placement in a body tube with a tubular Scaffold made of at least two ring segments (2, 3, 4), the meandering over arc sections (5, 5; 6, 6 ') endlessly adjoining one another obliquely pursuit (7, 8) formed and adjacent ring segments (2, 3 or 3, 4) by Connector struts (9) are coupled, wherein the arc sections (5, 6) between two diagonal struts (7, 8) relative to the circumferentially adjacent arc sections (5 ', 6') of a ring segment (2, 3, 4) offset stent longitudinal axis (LA) are characterized in that in a ring segment (2, 3, 4) each successive oblique struts (7, 8) different are long and that the connector struts (9) each from the Tip (13) of two V-shaped each closing obliquely pursuit (7, 8) of a ring segment (3, 4) in the deepest (14) of two V-shaped adjoining oblique struts (7, 8) of an adjacent ring segment (2, 3) extend, wherein each connector strut (9) one parallel to the stent longitudinal axis (LA) extending longitudinal section (10) and a transverse thereto aligned ...
Description
Die Erfindung betrifft einen Stent zum Anordnen in einer Körperröhre gemäß den Merkmalen von Patentanspruch 1.The The invention relates to a stent for placement in a body tube according to the features of claim 1.
Bei Stenosen handelt es sich um Gefäßverschlüsse und Einengungen von tubulären Körperröhren, wie beispielsweise Luftröhre, Bronchien, Speiseröhre, Gallengänge, Harnwege, Aorta und anderer Blutgefäße. Diese können durch operative und nicht operative Maßnahmen geöffnet werden. Bei den nicht operativen Maßnahmen werden sogenannte Stents in den Bereich der Stenose eingesetzt. Stents sind Gefäßprothesen die zur Abstützung der Gefäßinnenwand dienen und durch Kathetertechniken in das Gefäß eingebracht werden.at Stenoses are vascular occlusions and Constrictions of tubular Body tubes, like for example trachea, Bronchi, esophagus, Bile ducts, Urinary system, aorta and other blood vessels. These can be operational and non-operative activities open become. The non-surgical measures are called stents used in the area of the stenosis. Stents are vascular prostheses for support the vessel inner wall serve and be introduced by catheter techniques in the vessel.
Stents
der im Oberbegriff von Patentanspruch 1 beschriebenen Art gemäß
Die
Auch
aus der WO 00/30563 A1 oder der
Ein ähnlich aufgebautes
Stützgerüst zeigt die
Die
Ein Stent muss im nicht expandierten Zustand äußerst flexibel sein, damit er beim Einführen in die Körpergefäße deren Windungen problemlos folgen kann. In der Stenose aufgeweitet muss der Stent ausreichend stabil sein, um seine Funktion zu erfüllen und das notwendige Aufweitmaß beibehalten zu können.One Stent must be extremely flexible in the unexpanded state so that he when inserting into the body vessels of them Turns can easily follow. In the stenosis has widened the stent should be sufficiently stable to fulfill its function and to maintain the necessary expansion can.
Problematisch sowohl aus medizinischer als auch aus technischer Sicht sind Körpergefäße, die zum Zeitpunkt des Implantierens einen kleinen Durchmesser haben, der sich jedoch über die Einsatzdauer eines Stents vergrößert. Dies ist beispielsweise bei der Aorta von Kindern, insbesondere von Kleinkindern oder Babies, der Fall. Die Stents müssen durch sehr kleine Blutgefäße an den Ort der Stenose gebracht werden, um dort implantiert werden zu können. Folglich müssen die Stents zum Implantieren auf sehr kleine Durchmesser gekrimpt, das heißt zusammengedrückt werden. Hieran scheitern jedoch die meisten bekannten Stentdesigns.Problematic From a medical as well as a technical point of view, body vessels that are used to treat Timing of implantation have a small diameter, the but over the duration of use of a stent increased. This is for example in the aorta of children, especially infants or babies, the case. The stents must through very small blood vessels to the Place the stenosis to be implanted there. consequently have to the stents are crimped to very small diameters for implantation, that means being squeezed. However, this fails most of the known stent designs.
Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zugrunde, einen Stent zu schaffen, der sich auf sehr kleine Durchmesser krimpen lässt.Of the Invention is based on the prior art, the task, to create a stent that crimp on very small diameters leaves.
Die Lösung dieser Aufgabe besteht nach der Erfindung in einem Stent gemäß den Merkmalen von Patentanspruch 1.The solution This object is according to the invention in a stent according to the features of claim 1.
Kernpunkt der Erfindung bildet die Maßnahme, dass die Bogenabschnitte zwischen zwei Schrägstreben relativ zu den jeweils benachbarten Bogenabschnitten eines Ringsegments in Stentlängsachse zueinander versetzt sind. Benachbarte Bogenabschnitte liegen folglich über den Umfang gesehen nicht auf einer Linie. Auf diese Weise wird ein Freiraum für die Bogenabschnitte geschaffen, so dass sich diese beim Krimpen nicht gegenseitig behindern. Infolge dessen kann der erfindungsgemäße Stent im Vergleich zu bekannten Ausführungsformen zu einem kleineren Durchmesser geformt werden.crux invention forms the measure, that the arc sections between two oblique struts relative to each adjacent arc sections of a ring segment in Stentlängsachse offset from each other. Adjacent arc sections are therefore over the Scope not seen on a line. In this way, a free space for the Arc sections created so that they do not crimp hinder each other. As a result, the stent according to the invention compared to known embodiments too be formed a smaller diameter.
Der Versatz zwischen den Bogenabschnitten wird dadurch erreicht, dass die jeweils über einen Bogenabschnitt sich V-förmig aneinander schließenden Schrägstreben unterschleidlich lang ausgeführt sind.Of the Offset between the bow sections is achieved by each over a bow section is V-shaped adjoining oblique struts underperforming for a long time are.
Jede Verbinderstrebe weist einen Longitudinalabschnitt und einen quer hierzu ausgerichteten U-förmig konfigurierten Strebenabschnitt auf. Die U-förmigen Strebenabschnitte sind in dem Raum zwischen zwei mit axialem Abstand benachbarten Ringsegmenten angeordnet. Diese Maßnahmen tragen dazu bei, dass der Stent im expandierten Zustand keine ungewollte bzw. nachteilige Längenänderung erfährt.each Connector strut has a longitudinal portion and a transverse aligned U-shaped configured strut section on. The U-shaped Strut sections are in the space between two with axial spacing arranged adjacent ring segments. These measures help to ensure that the stent in the expanded state no unwanted or detrimental change in length experiences.
Die Verbinderstreben erstrecken sich jeweils von der Spitze zweier V-förmig aneinander schließender Schrägstreben eines Ringsegments in das Tiefste zweier V-förmig aneinander schließender Schrägstreben eines benachbarten Ringsegments. Auch diese Ausbildung unterstützt die Längenstabilität des Stents.The connector struts each extend from the tip of two V-shaped adjoining oblique struts of a ring segment in the Deepest two V-shaped adjoining diagonal struts of an adjacent ring segment. This training also supports the length stability of the stent.
Bevorzugt ist der Stent aus Metall gefertigt. Hierbei können alle verformbaren medizinisch möglichen Metalle bzw. Metalllegierungen zum Einsatz gelangen, z.B. Edelstahl, Kobaltlegierungen (Phynox), Reineisen oder Nickel-Titan-Legierungen.Prefers the stent is made of metal. Here, all deformable medical potential Metals or metal alloys are used, e.g. Stainless steel, Cobalt alloys (Phynox), pure iron or nickel-titanium alloys.
Zweckmäßigerweise sind die Verbinderstreben zwischen den einzelnen Ringsegmenten in Reihe hintereinander angeordnet, wie dies Patentanspruch 2 vorsieht. Auf diese Weise entsteht im expandierten Zustand des Stents ein gering elastisches Stützgerüst mit hoher Rückstellkraft.Conveniently, are the connector struts between each ring segments in Row arranged one behind the other, as provided in claim 2. In this way arises in the expanded state of the stent low elastic scaffold with high Restoring force.
Grundsätzlich können die Verbinderstreben eines Ringsegments und die Verbinderstreben des benachbarten Ringsegments aber auch in Umfangsrichtung versetzt angeordnet sein (Patentanspruch 3).Basically, the Connector struts of a ring segment and the connector struts of the adjacent Ring segment but also be offset in the circumferential direction (Claim 3).
Der erfindungsgemäße Stent ist insbesondere geeignet für die Implantation in Gefäße von Kindern, beispielsweise der Aorta. Die Implantation des Stents erfolgt über Körpergefäße mit sehr geringem Durchmesser. Hier muss besonders schonend gearbeitet werden, um Verletzungen beim Implantationsvorgang zu vermeiden. In der Stenose muss der Stent dann auf einen vergleichsweise großen Durchmesser aufgeweitet werden können. Diese Eigenschaften weist der erfindungsgemäße Stent auf. Es kann ein Stent geschaffen werden, der im gekrimpten Zustand einen Durchmesser von ca. 1,5 mm besitzt und der sich auf Durchmesser zwischen 18 mm bis 26 mm erweitern lässt.Of the Stent according to the invention is particularly suitable for implantation in vessels of children, for example, the aorta. The implantation of the stent is done via body vessels with a lot small diameter. Here you have to work very carefully, to avoid injuries during the implantation process. In the stenosis The stent then has to be of a comparatively large diameter can be expanded. These properties are exhibited by the stent according to the invention. It can be a stent be created in the crimped state of a diameter of It has a diameter of approx. 1.5 mm and has a diameter between 18 mm and 26 mm mm expandable.
Die
Erfindung ist nachfolgend anhand einer Zeichnung näher beschrieben,
die das Stentmuster eines erfindungsgemäßen Stents
Der
Stent
Eine
Verbinderstrebe
Die
Anschlussstellen zwischen den Verbinderstreben
Jeweils
zwei über
einen Bogenabschnitt
- 11
- Stentstent
- 22
- Ringsegmentring segment
- 33
- Ringsegmentring segment
- 44
- Ringsegmentring segment
- 55
- Bogenabschnittarc section
- 5'5 '
- Bogenabschnittarc section
- 66
- Bogenabschnittarc section
- 6'6 '
- Bogenabschnittarc section
- 77
- Schrägstrebediagonal strut
- 88th
- Schrägstrebediagonal strut
- 99
- Verbinderstrebetie bar
- 1010
- Longitudinalabschnittlongitudinal portion
- 1111
- U-StrebenabschnittU-strut portion
- 1212
- Raumroom
- 1313
- Spitzetop
- 1414
- Tiefstelowest
- aa
- Versatzoffset
- LALA
- Längsachse v. 1longitudinal axis v. 1
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001150547 DE10150547B4 (en) | 2001-10-12 | 2001-10-12 | stent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001150547 DE10150547B4 (en) | 2001-10-12 | 2001-10-12 | stent |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10150547A1 DE10150547A1 (en) | 2003-04-30 |
DE10150547B4 true DE10150547B4 (en) | 2007-10-11 |
Family
ID=7702368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2001150547 Expired - Fee Related DE10150547B4 (en) | 2001-10-12 | 2001-10-12 | stent |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10150547B4 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10300475B4 (en) * | 2003-01-09 | 2008-11-13 | Alveolus Inc. | Stent with a tubular expandable support device |
JP6229051B2 (en) * | 2013-06-21 | 2017-11-08 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | Stent with flexible connector |
CN108938161B (en) * | 2017-11-17 | 2021-07-06 | 杭州唯强医疗科技有限公司 | Peripheral blood vessel stent |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712614A1 (en) * | 1994-11-15 | 1996-05-22 | Advanced Cardiovascular Systems, Inc. | Intraluminal stent for attaching a graft |
DE29904817U1 (en) * | 1999-03-16 | 1999-05-27 | amg Handelsgesellschaft für angewandte Medizin- und Gesundheitstechnik mbH, 46348 Raesfeld | Blood vessel support device |
WO2000030563A1 (en) * | 1998-11-20 | 2000-06-02 | Scimed Life Systems, Inc. | Longitudinally flexible expandable stent |
DE19951475A1 (en) * | 1999-10-26 | 2001-05-10 | Biotronik Mess & Therapieg | Stent |
DE19937638A1 (en) * | 1999-08-12 | 2001-05-17 | Qualimed Innovative Med Prod | Trachea stent comprises anatomical, substantially a horseshoe-shaped, cross section and a restoring force which varies over the length and/or the cross section of the stent |
-
2001
- 2001-10-12 DE DE2001150547 patent/DE10150547B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712614A1 (en) * | 1994-11-15 | 1996-05-22 | Advanced Cardiovascular Systems, Inc. | Intraluminal stent for attaching a graft |
WO2000030563A1 (en) * | 1998-11-20 | 2000-06-02 | Scimed Life Systems, Inc. | Longitudinally flexible expandable stent |
DE29904817U1 (en) * | 1999-03-16 | 1999-05-27 | amg Handelsgesellschaft für angewandte Medizin- und Gesundheitstechnik mbH, 46348 Raesfeld | Blood vessel support device |
DE19937638A1 (en) * | 1999-08-12 | 2001-05-17 | Qualimed Innovative Med Prod | Trachea stent comprises anatomical, substantially a horseshoe-shaped, cross section and a restoring force which varies over the length and/or the cross section of the stent |
DE19951475A1 (en) * | 1999-10-26 | 2001-05-10 | Biotronik Mess & Therapieg | Stent |
Also Published As
Publication number | Publication date |
---|---|
DE10150547A1 (en) | 2003-04-30 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130501 |