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 Synthesis of novel Myrtucommulone and Analogues
25.11.2013 | TechnologieAllianz e.V.

nachricht Transmission signal separation in radar systems for OFDM and multicarrier radar
22.11.2013 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Smart Cities

08.12.2014 | Event News

European Polymer Congress 2015 in Dresden/Germany

01.12.2014 | Event News

Regional economic cooperation in Central Asia

21.11.2014 | Event News

 
Latest News

How Does Prostate Cancer Form?

19.12.2014 | Health and Medicine

Protection of the mouse gut by mucus depends on microbes

18.12.2014 | Life Sciences

How the Cell Keeps Misdelivered Proteins From Causing Damage in the Cell Nucleus

18.12.2014 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>