Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Microstructured Polymer Stents

14.11.2012
<strong>Background</strong><br>

Stents are small tubes or tubular shaped meshes which are used to keep or rebuild the luminal size of passages in the human body like coronary arteries or the esophagus. They are most commonly used in the treatment of stenosis (narrowing of the blood vessels). Stents can be utilized as implants or in conjunction with an angioplasty (a technique for widening narrowed arteries). One of the most common complications when using stents is in-stent restenosis and stent loss. In-stent restenosis is the renarrowing of the implanted stent which occurs in ~ 30 % of all cases.<br><br> To prevent restenosis drug eluting stents have been developed. This has been a success to a certain extent, but a big problem of drug eluting stents are the late effects, such as increased risk of bleeding, acute intoxication and the formation of tumors <br><br> <strong>Technology</strong><br> This novel microstructured polymer stents are made of a shape memory polymer (e.g. polyurethane). Below body temperature the shape memory polymer stent has a compressed geometry (temporary form, see left figure). When heating the shape memory polymer stent on body temperature the stent turns into an uncompressed geometry (predefined permanent form, see right figure). <br><br>

The inner surface of the stent is microstructured limiting laminar flows and preventing in-stent restenosis. The outer surface is structured (e.g. microporous) leading to a fixation of the stent preventing stent loss. Therefore the polymer stent is a reliable device for angioplasty procedures.<br><br> The structuring of the polymer surface can be achieved with different meth-ods e.g. via moulding, laser structuring or etching. <br><br> <strong>Benefits</strong><br> <ul> <li>Prevention of restenosis and stent loss</li> <li>Prevention of long-term effects</li> </ul><br> <strong>IP Rights</strong><br> DE application (11/2008)<br><br> <strong>Origin</strong><br> Technische Universität Berlin</p>

Further Information: PDF

ipal GmbH
Phone: +49 (0)30/2125-4820

Contact
Dr. Dirk Dantz

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=2973&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht EPAP - Corrosion prevention in NMC-cathodes for lithium-ion batteries
25.02.2015 | TechnologieAllianz e.V.

nachricht Particles for optional perfusion diagnosis
24.02.2015 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

European Geosciences Union meeting: programme online, provisional press conference topics

26.02.2015 | Event News

Round Table on Solar Energy Research

18.02.2015 | Event News

40th FEBS Congress 2015 – The Biochemical Basis of Life

09.02.2015 | Event News

 
Latest News

Researchers create self-reconstructive metal wire utilizing electric field trapping of gold nanoparticles

27.02.2015 | Power and Electrical Engineering

Climate-Change Clues From the Turtles of Tropical Wyoming

27.02.2015 | Ecology, The Environment and Conservation

Pockets of Calm Protect Molecules Around a Supermassive Black Hole

27.02.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>