DE102009032119A1 - Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure - Google Patents
Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure Download PDFInfo
- Publication number
- DE102009032119A1 DE102009032119A1 DE102009032119A DE102009032119A DE102009032119A1 DE 102009032119 A1 DE102009032119 A1 DE 102009032119A1 DE 102009032119 A DE102009032119 A DE 102009032119A DE 102009032119 A DE102009032119 A DE 102009032119A DE 102009032119 A1 DE102009032119 A1 DE 102009032119A1
- Authority
- DE
- Germany
- Prior art keywords
- vascular prosthesis
- plastic
- middle layer
- coating
- layer made
- 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- Withdrawn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
- A61F2/02—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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/28—Materials for coating prostheses
- A61L27/34—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/507—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials for artificial blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L33/00—Antithrombogenic treatment of surgical articles, e.g. sutures, catheters, prostheses, or of articles for the manipulation or conditioning of blood; Materials for such treatment
- A61L33/06—Use of macromolecular materials
- A61L33/08—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/08—Coatings comprising two or more layers
Landscapes
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Dermatology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Pulmonology (AREA)
- Gastroenterology & Hepatology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Surgery (AREA)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
Abstract
Description
Die Erfindung betrifft eine hämokompatibel beschichtete Gefäßprothese nach dem Oberbegriff des Anspruchs 1.The The invention relates to a hemocompatible coated vascular prosthesis according to the preamble of claim 1.
Eine
gattungsgemäße Gefäßprothese
ist beispielsweise aus der
Eine
weitere beschichtete Gefäßprothese ist beispielsweise
aus der
Der Erfindung liegt die Aufgabe zugrunde, eine gegenüber dem Stand der Technik weiterentwickelte hämokompatible Gefäßprothese anzugeben.Of the Invention is based on the object, a relation to the State of the art further developed hemocompatible vascular prosthesis specify.
Diese
Aufgabe wird erfindungsgemäß gelöst durch
eine eine hämokompatible Beschichtung aufweisende Gefäßprothese
mit den Merkmalen des Anspruchs 1. Die Gefäßprothese
weist folgenden dreischichtigen Aufbau auf:
Die äußere
Schicht der Gefäßprothese ist durch einen Kunststoff
gebildet, der eine offene Struktur aufweist. Bei der offenen Struktur
handelt es sich beispielsweise um eine porige Struktur. Unter einer
porigen Struktur wird sowohl eine offenporige als auch eine geschlossenporige
Struktur verstanden. Alternativ ist die offene Struktur durch die
Herstellung der äußeren Schicht aus Fasern erzeugbar.
Besonders geeignet für die Herstellung sind Fluorpolymer-Kunststoffe,
insbesondere expandiertes Polytetrafluorethylen. Die offene Struktur
der äußeren Schicht ermöglicht die Einsprossung
von Bindegewebe, womit die Gefäßprothese im Körper
des Patienten fixiert wird.This object is achieved by a vascular prosthesis having a hemocompatible coating with the features of claim 1. The vascular prosthesis has the following three-layered structure:
The outer layer of the vascular prosthesis is formed by a plastic having an open structure. For example, the open structure is a porous structure. A porous structure is understood as meaning both an open-pore and a closed-pore structure. Alternatively, the open structure is producible by making the outer layer of fibers. Particularly suitable for the production are fluoropolymer plastics, in particular expanded polytetrafluoroethylene. The open structure of the outer layer allows the embedding of connective tissue, which fixes the vascular prosthesis in the body of the patient.
Als
mittlere Schicht der Gefäßprothese ist eine Kunststoffschicht
vorgesehen, welche im Gegensatz zur äußeren Schicht
eine geschlossene Struktur aufweist, wobei die genannten Schichten vorzugsweise
aus Werkstoffen unterschiedlicher chemischer Zusammensetzung hergestellt
sind. Ein geeigneter Werkstoff zur Herstellung der mittleren Schicht
ist zum Beispiel Polyurethan (PU). Als weitere für die
Herstellung der mittleren Schicht geeignete Materialien sind beispielsweise
SEES (Styrol-Ethylen/Butylen-Styrol-Triblock-Polymer) und SEPS (Styrol-Ethylen/Propylen-Styrol-Triblock-Polymer)
zu nennen. Eine Verwendung dieser Materialien in der Medizintechnik,
nämlich für Beutel, ist beispielsweise in der
Durch die porenfreie Struktur der mittleren Schicht wirkt diese als Bariere und verhindert damit ein Einwachsen von Gewebe in die Gefäßprothese über die äußere Schicht hinaus. Zumindest auf der Innenseite weist die mittlere Schicht eine glatte Oberfläche auf. Die an die äußere Schicht grenzende Außenoberfläche der mittleren Schicht kann im Vergleich hierzu eine größere Rauhigkeit aufweisen. Zusätzlich zu ihrer Barrierefunktion erfüllt die mittlere Schicht der Gefäßprothese eine mechanische Funktion. Insbesondere werden die elastischen Eigenschaften der Gefäßprothese zu einem wesentlichen Teil – neben der äußeren Schicht – durch die mittlere Schicht bestimmt. Bei geeigneter Auslegung der mittleren und äußeren Schicht ist die Gefäßprothese insbesondere als alloplastische Prothese (graft) herstellbar, welche einer nativen Arterie vergleichbare mechanische Eigenschaften hat.By the pore-free structure of the middle layer acts as barbers and thus prevents tissue from ingrowing into the vascular prosthesis the outer layer out. At least on the inside The middle layer has a smooth surface. The outer surface adjacent to the outer layer the middle layer may be larger in comparison Have roughness. In addition to its barrier function fills the middle layer of the vascular prosthesis a mechanical function. In particular, the elastic properties the vascular prosthesis to a substantial extent - in addition the outer layer - through the middle layer certainly. With suitable design of the middle and outer Layer is the vascular prosthesis in particular as alloplastic prosthesis (graft) can be produced, which is a native Artery has comparable mechanical properties.
Die
innerste Schicht der Gefäßprothese wird gebildet
durch eine hämokompatible Beschichtung, vorzugsweise eine
Beschichtung der in der
Durch die hämokompatible Beschichtung ist das Lumen der Gefäßprothese innert gegen die Besiedelung durch Fibroblasten und vollständig athrombogen. Die Entstehung einer neo-Intima (Gefäßinnenwand) in der Gefäßprothese wird durch die hämokompatible Beschichtung zuverlässig verhindert.By the hemocompatible coating is the lumen of the vascular prosthesis within against the colonization by fibroblasts and completely athrombogen. The emergence of a neo-intima (inner vessel wall) in the vascular prosthesis is characterized by the hemocompatible Coating reliably prevented.
Der Vorteil der Erfindung liegt insbesondere darin, dass durch einen dreilagigen Aufbau einer Gefäßprothese sowohl den unterschiedlichen Anforderungen einerseits an der Außenoberfläche und andererseits an der Innenoberfläche der Prothese Rechnung getragen wird, als auch die wesentlich durch die mittlere Schicht beeinflussten mechanischen Eigenschaften der Prothese anforderungsgerecht realisierbar sind. Es ist vorgesehen, die Bezeichnung „Perfect Graft” für die Gefäßprothese einzuführen.Of the Advantage of the invention is in particular that by a three-layer construction of a vascular prosthesis both the different requirements on the one hand on the outer surface and on the other hand on the inner surface of the prosthesis bill is worn, as well as the essential through the middle layer influenced mechanical properties of the prosthesis according to the requirements are feasible. It is intended to use the term "Perfect Graft "for the vascular prosthesis introduce.
Die erfindungsgemäße Vorrichtung ist sowohl zur Implantation als auch für extrakorporale Anwendungen, beispielsweise als arteriell-venöser Shunt für Dialysepatienten, geeignet. Eine dauerhafte Verwendung der ohne Beschränkung der Allgemeinheit als Gefäßprothese bezeichneten Vorrichtung ist ebenso möglich wie eine temporäre VerwendungThe Device according to the invention is both for implantation as well as for extracorporeal applications, for example as an arterial-venous shunt for dialysis patients, suitable. A permanent use of unlimited referred to the general public as a vascular prosthesis Device is possible as well as a temporary one use
Die Gefäßprothese ist in verschiedenen Durchmesserbereichen herstellbar, auch mit einem Innendurchmesser von weniger als 5 mm. Selbst Umgehungsanastomosen, insbesondere am Herz (köstlicher Bypass), sind mit der Gefäßprothese erzeugbar.The Vascular prosthesis is in different diameter ranges can be produced, even with an inner diameter of less than 5 mm. Even bypass anastomoses, especially on the heart (delicious Bypass) can be generated with the vascular prosthesis.
Nachfolgend
wird ein Ausführungsbeispiel der Erfindung anhand einer
Zeichnung näher erläutert. Hierin ist in einer
einzigen Figur in einer schematischen, nicht maßstäblichen
Schnittdarstellung eine Gefäßprothese
Die
Gefäßprothese
Eine äußere Schicht
An outer layer
An
die Innenoberfläche der äußeren Schicht
Auf
der Innenoberfläche der mittleren Schicht
Die
Beschichtung
- 11
- Gefäßprothesevascular prosthesis
- 22
- äußere Schichtouter layer
- 33
- mittlere Schichtmiddle layer
- 44
- hämokompatible Beschichtunghemocompatible coating
- 55
- Lumenlumen
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10261986 B4 [0002, 0002, 0002, 0008, 0016] - DE 10261986 B4 [0002, 0002, 0002, 0008, 0016]
- - EP 1849434 A1 [0003] EP 1849434 A1 [0003]
- - EP 0765654 B1 [0006] - EP 0765654 B1 [0006]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009032119A DE102009032119A1 (en) | 2009-06-26 | 2009-06-26 | Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009032119A DE102009032119A1 (en) | 2009-06-26 | 2009-06-26 | Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009032119A1 true DE102009032119A1 (en) | 2010-12-30 |
Family
ID=43217994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009032119A Withdrawn DE102009032119A1 (en) | 2009-06-26 | 2009-06-26 | Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009032119A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010010483A1 (en) | 2010-02-28 | 2011-09-01 | Björn H. Koslar | Medical implant for connecting two vessels, such as transplant vessel and target vessel, has connecting element that is made of shape memory alloy, where connecting element is formed to roll implant around vessel in spiral manner |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0765654B1 (en) | 1995-09-29 | 2001-12-05 | Fresenius AG | Medical bag |
EP1192957A2 (en) * | 2000-09-29 | 2002-04-03 | Ethicon, Inc. | Coating for medical devices |
EP0842207B1 (en) * | 1995-08-03 | 2003-09-03 | Paul J. Santerre | Fluoroligomer surface modifiers for polymers and articles made therefrom |
US20040063805A1 (en) * | 2002-09-19 | 2004-04-01 | Pacetti Stephen D. | Coatings for implantable medical devices and methods for fabrication thereof |
US20040170685A1 (en) * | 2003-02-26 | 2004-09-02 | Medivas, Llc | Bioactive stents and methods for use thereof |
DE29724864U1 (en) * | 1996-06-13 | 2004-11-04 | Boston Scientific Scimed, Inc., Marple Grove | Stent coating for drug release |
DE102005021622A1 (en) * | 2005-05-05 | 2006-11-16 | Hemoteq Gmbh | A method for coating the net or mesh fabric of surgically used blood vessel stents has a first thin coating applied to the web material and a second thicker coating applied to the webs and gaps |
DE102005040211A1 (en) * | 2005-08-16 | 2007-04-05 | Maquet Cardiopulmonary Ag | Use of nonionic esters in a coating for blood contacting surfaces |
EP1849434A1 (en) | 2006-04-21 | 2007-10-31 | Stemberger, Axel, Prof.Dr.med. | Coating for stents |
DE10261986B4 (en) | 2002-05-10 | 2008-01-31 | Hemoteq Ag | Hemocompatible coated surfaces, process for their preparation and their uses |
DE102006038239A1 (en) * | 2006-08-07 | 2008-02-14 | Biotronik Vi Patent Ag | Medical implant for animals and humans comprises an implant base body completely or partially covered with a polymer matrix containing active ingredients and made from one or more polymers |
DE102007034364A1 (en) * | 2007-07-24 | 2009-01-29 | Biotronik Vi Patent Ag | Degradable metal stent with active ingredient-containing coating |
-
2009
- 2009-06-26 DE DE102009032119A patent/DE102009032119A1/en not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0842207B1 (en) * | 1995-08-03 | 2003-09-03 | Paul J. Santerre | Fluoroligomer surface modifiers for polymers and articles made therefrom |
EP0765654B1 (en) | 1995-09-29 | 2001-12-05 | Fresenius AG | Medical bag |
DE29724864U1 (en) * | 1996-06-13 | 2004-11-04 | Boston Scientific Scimed, Inc., Marple Grove | Stent coating for drug release |
EP1192957A2 (en) * | 2000-09-29 | 2002-04-03 | Ethicon, Inc. | Coating for medical devices |
DE10261986B4 (en) | 2002-05-10 | 2008-01-31 | Hemoteq Ag | Hemocompatible coated surfaces, process for their preparation and their uses |
US20040063805A1 (en) * | 2002-09-19 | 2004-04-01 | Pacetti Stephen D. | Coatings for implantable medical devices and methods for fabrication thereof |
US20040170685A1 (en) * | 2003-02-26 | 2004-09-02 | Medivas, Llc | Bioactive stents and methods for use thereof |
DE102005021622A1 (en) * | 2005-05-05 | 2006-11-16 | Hemoteq Gmbh | A method for coating the net or mesh fabric of surgically used blood vessel stents has a first thin coating applied to the web material and a second thicker coating applied to the webs and gaps |
DE102005040211A1 (en) * | 2005-08-16 | 2007-04-05 | Maquet Cardiopulmonary Ag | Use of nonionic esters in a coating for blood contacting surfaces |
EP1849434A1 (en) | 2006-04-21 | 2007-10-31 | Stemberger, Axel, Prof.Dr.med. | Coating for stents |
DE102006038239A1 (en) * | 2006-08-07 | 2008-02-14 | Biotronik Vi Patent Ag | Medical implant for animals and humans comprises an implant base body completely or partially covered with a polymer matrix containing active ingredients and made from one or more polymers |
DE102007034364A1 (en) * | 2007-07-24 | 2009-01-29 | Biotronik Vi Patent Ag | Degradable metal stent with active ingredient-containing coating |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010010483A1 (en) | 2010-02-28 | 2011-09-01 | Björn H. Koslar | Medical implant for connecting two vessels, such as transplant vessel and target vessel, has connecting element that is made of shape memory alloy, where connecting element is formed to roll implant around vessel in spiral manner |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60205903T2 (en) | COMPOSITE EPTFE / TEXTILE PROSTHESIS | |
DE69930434T2 (en) | Stent graft membrane and method of making the same | |
DE60115712T2 (en) | COATED TUBE TRANSPLANTS AND USE METHOD | |
DE2508570C2 (en) | Vascular prosthesis made of expanded and porous polytetrafluoroethylene | |
EP0248247B1 (en) | Vascular graft wall | |
EP0248246B1 (en) | Vascular graft wall | |
DE3019996C2 (en) | ||
DE69535595T2 (en) | Method of making a bio-degradable collagen graft prosthesis | |
DE69839106T2 (en) | A reservoir-equipped biodegradable endoprosthesis and method of making the same | |
DE60215931T2 (en) | METHOD FOR FIXING AXIAL FIBERS TO A SELF-EXPANDING STENT | |
DE102008012438B4 (en) | Mechanical aortic valve for endovascular implantation | |
EP0160483A2 (en) | Vascular prosthesis | |
US20040122509A1 (en) | Radiopaque ePTFE medical devices | |
DE102018110591B4 (en) | Medical device with a fibrin coating, system and set with such a device and method of manufacture | |
DE10351220A1 (en) | Tubular implant | |
DE69924242T2 (en) | IMPROVED VASCULAR PTFE PROSTHESIS AND METHOD FOR THE PRODUCTION THEREOF | |
DE69821117T2 (en) | ARTIFICIAL IMPLANT FOR THE REPLACEMENT OF THE HUMAN URBAN DETECTOR | |
DE102009032119A1 (en) | Hemo-compatible-coated stent for fixation in body of patient, has outside layer made of fluorine polymer plastic having unclosed structure, middle layer made of plastic and coating, where outside layer has open-porous structure | |
EP3747399A1 (en) | Stent graft with sealing element | |
DE102009037134A1 (en) | Tubular implant for replacement of natural blood vessels | |
HUE031569T2 (en) | Orthotopic artificial bladder endoprosthesis | |
DE102019121562A1 (en) | Medical device for treating aneurysms | |
DE60017899T2 (en) | TISSUE TRANSPLANT FROM EXPANDED POLYTETRAFLUOROETHYLENE WITH INCREASED HEALING | |
DE102012201094A1 (en) | Flexible vascular prosthesis and method for its manufacture | |
DE102013201065A1 (en) | Tubular vascular prosthesis for treatment of damaged arteries, has double-walled section with outer wall formed of material and inner wall formed of another material, where diameter of outer wall is greater than diameter of inner wall |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |