Project description
Improving the durability of sternal wires
Sternal wires made from stainless steel are essential for closing the chest after heart surgery. However, they face significant challenges inside the human body. Corrosion caused by stress, confined spaces and reactive oxygen species lead to the release of harmful metals or even wire failure. With the support of the Marie Skłodowska-Curie Actions programme, the BioCoatCorr project will study how these wires degrade under realistic conditions. Researchers will develop a new protective coating made of zein biopolymer and cerium to improve wire durability and reduce corrosion, thereby enhancing the safety and quality of life for patients.
Objective
316LVM stainless steel sternal wires (SW) are widely used in cardiothoracic surgery for chest closure. However, in the aggressive environment of the human body, SWs are likely to corrode without a protective coating. This can lead to the release of harmful chromium and nickel in the surrounding tissues or, worse, SW rupture with potentially life-threatening complications, such as heart lacerations. SW degradation is caused by several factors, like chloride attack promoted by the creation of confined areas (e.g. at the chest bone/SW interface), plastic deformation due to the placement of SW around the bone, and tensile stress. Moreover, after implantation, the patients immune system unavoidably triggers an acute inflammation episode during which leukocytes generate reactive oxygen species (ROS), such as H2O2 and radicals (notably via the Fenton reactions), that also contribute to the SW deterioration. BioCoatCorr aims to investigate in-depth in vitro degradation of 316LVM SW in phosphate buffer saline involving simultaneously multiple degradation factors (plastic deformation, H2O2, confined areas). For that purpose, electrochemical measurements (corrosion potential monitoring coupled with impedance spectroscopy) will be carried out at various levels of wire deformation. Furthermore, a novel zein-bioglass-cerium protective coating capable of withstanding the harsh SW operative conditions will be prepared using electrophoretic deposition (EPD). The zein biopolymer has been selected for its ductile properties required for matching the significant SW deformation. The cerium will have the functionality of ROS scavenger, limiting the polymer degradation. The anti-corrosion behaviour and mechanical properties of the coatings will be assessed as a function of the synthesis parameters. The results of BioCoatCorr will contribute to developing the next-generation SW with enhanced durability and thus improve patient life quality postoperatively.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- medical and health sciences clinical medicine surgery
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences chemical sciences polymer sciences
- engineering and technology materials engineering coating and films
- natural sciences physical sciences optics spectroscopy
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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29200 Brest
France
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