Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Printing implants with the laser

21.07.2015

Whether for individual micro-implants or for micro-implants with medicine depots – additive processes are ideally suited for manufacturing such components. In the project “REMEDIS”, scientists at the Laser Zentrum Hannover e.V. (LZH) have established a highly automated laser melting process to produce or coat implants made of platinum, nickel-titanium (NiTi) or stainless steel.

For this, scientists of the Surface Technology Group used a special form of 3-D printing – selective laser micro-melting (SLµM).


Three-dimensional structures made of the form memory alloy nickel-titanium using laser additive processes.

Photo: LZH

They were able to coat electrodes for pacemakers with platinum, and produce three-dimensional lattice structures made of NiTi as well as stent prototypes made of stainless steel. Within this project platinum has been – for the first time successfully – processed within micro scale.

Coated pacemaker electrodes

One way to lengthen the life of pacemakers is to intelligently adapt the form and surface of the electrodes. Platinum has excellent electrical conductivity characteristics, and it is bioinert. However, the metal has casting limitations, and it is hard to be worked on in the micro-range using conventional methods.

In the framework of this project, the scientists have developed an SLµM process for a platinum-iridium-alloy, and successfully coated implants.

Lattice structures made of shape memory alloys

The shape memory alloy NiTi is already widely used in medical technology. Micro-implants made of NiTi offer new possibilities for making tailor-made stents, or bone replacements for patients.

The scientists at the LZH have been able to successfully manufacture highly-complex, three-dimensional component structures made of NiTi. A resolution of up to 90 µm has already been reached for components, retaining all of the characteristics of the shape memory alloy.

Stent structures made of stainless steel

The use of stainless steel 316 L for SLµM processes has already been established. Within this project, stent structures with a closed cell design have been developed and produced. Their mechanical characteristics are similar to those of conventional stents.

The project was carried out together with the Institute for Biomedical Technology of the University of Rostock, as a subproject in the cooperative project “REMEDIS”. REMEDIS was supported by the German Federal Ministry for Education and Research (BMBF).

Weitere Informationen:

http://remedis.med.uni-rostock.de/

Lena Bennefeld | Laser Zentrum Hannover e.V.
Further information:
http://www.lzh.de/

More articles from Medical Engineering:

nachricht A 15-minute scan could help diagnose brain damage in newborns
15.11.2018 | Imperial College London

nachricht NIH scientists combine technologies to view the retina in unprecedented detail
14.11.2018 | NIH/National Eye Institute

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Optical Coherence Tomography: German-Japanese Research Alliance hosted Medical Imaging Conference

19.11.2018 | Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

 
Latest News

Mutation that causes autism and intellectual disability makes brain less flexible

20.11.2018 | Life Sciences

The sweet side of reproductive biology

20.11.2018 | Life Sciences

Fading stripes in Southeast Asia: First insight into the ecology of an elusive and threatened rabbit

20.11.2018 | Ecology, The Environment and Conservation

VideoLinks
Science & Research
Overview of more VideoLinks >>>