Research: Individual eye prostheses

Stent

It is hard to imagine how it must feel to lose an eye. Around 8 million people worldwide are affected by this condition, requiring an ocular prosthesis.

Artificial eye prostheses conventionally are half-shells made of glass or plastic (PMMA). Glass eyes are manufactured of blown cryolite glass, then colored and painted. For plastic eyes, material is injected into the empty eye socket, the resulting model is then machined. Since the eye is constantly changing, the prosthesis must be replaced regularly, especially with children.

In any case, as these custom-made products are painstakingly handcrafted by ocularists, production is very time-consuming and cost-intensive. But despite all craftsmanship, a life-like resemblance to the original eye still is very hard to achieve.

That’s why Ocupeye Ltd, Fraunhofer IGD, and FIT have joined forces in the C2PAE research project to develop a realistic and precisely fitting ocular prosthesis that can be manufactured fast and at affordable costs.


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Bild
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Bild

Research: Seed units for corals

Korallen

Coral reefs are threatened with extinction. Overfishing, the warming of the oceans and their pollution with pollutants are the reasons for this. The ecological consequences can hardly be estimated, as coral reefs make a crucial contribution to marine biodiversity. For this reason, research institutes worldwide are busy breeding and establishing more resistant coral species. So is SECORE International Inc, one of the leading organizations for coral reef protection and restoration.

Based on years of research, SECORE developed a new generation of colonization structures in collaboration with designers and software developer AUTODESK. On these structures with a diameter of about 10 cm coral larvae are settled in a protected way until they have grown. Then the so-called "seed units" are inserted into the reef structure, where their angular shape wedges them in place, providing a stable foundation for the coral larvae to build new coral reefs.

To determine which material is best suited for coral settlement, FIT was commissioned as part of a development project to 3D print these structures from ceramic.

Would you like to learn more about this project? Then we look forward to hearing from you.


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Research: Coronary stents

Medizintechnik Stent

The production of a stent starts with a tube made of metal (NiTi, 316 L (316LVM), L605, MP35N or Phynox), increasingly also of bioresorbable plastic or magnesium. The conventional stent is milled, electropolished, heat treated if necessary and finally passivated. However, due to this manufacturing method, the stent geometry is significantly limited by the cylindrical shape of the tube and the possibilities of milling. Thus, conventionally manufactured stents have constant diameters and strut thicknesses over the entire length. In many cases, this leads to uneven expansion behavior during implantation, resulting in injury to the blood vessels.

Today, stents are used in many regions of the human body. They therefore have very different sizes, from tiny coronary stents with wall thicknesses in the µ range to aortic stents with diameters of up to 4 cm. In order to improve the well-being of patients through optimized stents, we are active in various research projects together with the East Bavarian Technical University Regensburg and the University Hospital Regensburg.

In addition to aortic stents, we are also working on the question of how to build coronary stents so fine and stable that they can be plastically deformed several times, e.g. by crimping, but remain dimensionally stable in the vessel after expansion. This requires a modified stent geometry. These innovative stents are manufactured using Micro-SLM. This is a 3D printing process based on laser melting (LM or PBF-LB/M), but operating with modified optics. This equipment will be used to fabricate newly developed designs from 316L surgical stainless steel as a basis for further experimental and biological testing. This project will seek medical approval for the new generation of stents.

Are you looking for an experienced research partner for your project? Then we look forward to hearing from you.


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Medizintechnik Stent
Medizintechnik Stent

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