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

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Lizard activity levels can help scientists predict environmental change

Research study provides new tools to assess warming temperatures

Spring is here and ectotherms, or animals dependent on external sources to raise their body temperature, are becoming more active. Recent studies have shown...

Im Focus: Hannover Messe 2015: Saving energy with smart façades

Glass-fronted office buildings are some of the biggest energy consumers, and regulating their temperature is a big job. Now a façade element developed by Fraunhofer researchers and designers for glass fronts is to reduce energy consumption by harnessing solar thermal energy. A demonstrator version will be on display at Hannover Messe.

In Germany, buildings account for almost 40 percent of all energy usage. Heating, cooling and ventilating homes, offices and public spaces is expensive – and...

Im Focus: Nonoxide ceramics open up new perspectives for the chemical and plant engineering

Outstanding chemical, thermal and tribological properties predestine silicon carbide for the production of ceramic components of high volume. A novel method now overcomes the procedural and technical limitations of conventional design methods for the production of components with large differences in wall thickness and demanding undercuts.

Extremely hard as diamond, shrinking-free manufacturing, resistance to chemicals, wear and temperatures up to 1300 °C: Silicon carbide (SiSiC) bundles all...

Im Focus: Experiment Provides the Best Look Yet at 'Warm Dense Matter' at Cores of Giant Planets

In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...

Im Focus: Energy-autonomous and wireless monitoring protects marine gearboxes

The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.

As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

World Conference On Regenerative Medicine 2015: Registration And Abstract Submission Now Open

25.03.2015 | Event News

University presidents from all over the world meet in Hamburg

19.03.2015 | Event News

10. CeBiTec Symposium zum Big Data-Problem

17.03.2015 | Event News

 
Latest News

NASA covers Super Typhoon Maysak's rainfall, winds, clouds, eye

01.04.2015 | Earth Sciences

Quantum teleportation on a chip

01.04.2015 | Information Technology

Galaxy Clusters Formed as 'Fireworks'

01.04.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>