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1
Content available Additive manufacturing methods, materials and medical applications - the review
Laskowska Dorota, Mitura Katarzyna, Ziółkowska Ewa, Bałasz Błażej
Journal of Mechanical and Energy Engineering
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2021
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Vol. 5, No 1
15--29
EN
The aim of the additive manufacturing (AM) is a production of physical objects by adding material layer-by-layer based on virtual geometry developed in the computer system. The main criteria for the division of additive manufacturing methods are the way to apply the layer and the type of construction material. In most projects, the choice of method is a compromise between costs and properties (e.g. physical, chemical or mechanical) of the manufactured object. Currently, AM methods have found application in many areas of life, including industrial design, automotive, aerospace, architecture, jewellery, medicine and veterinary medicine, bringing many innovative and revolutionary solutions. The purpose of this article is to review of the additive production methods and present the potential of medical application.
2
Content available Implant Safety Tool Application to Assist the Assessment of Radio-Frequency Radiation Exposure
Gas Piotr, Miaskowski Arkadiusz
Journal of Ecological Engineering
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2019
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Vol. 20, nr 10
24--33
EN
This paper discusses a new Implant Safety Tool, used to assess the safety of patients with metal implants exposed to radio-frequency (RF) fields. This specialist tool is discussed on the example of pectus patients with titanium bar-implant inserted during the minimally invasive Nuss procedure. The authors created a 3D realistic model of a 34-year-old male patient with a Nuss bar-implant. A numerical analysis based on the finite-difference time-domain (FDTD) method was performed for a far field source in the form of a plane wave with the frequency of 64 MHz, which corresponds to the RF exposure generated by MRI devices at 1.5 T. The obtained results allow concluding that the concave Nuss bar-implant poses no risk during environmental and occupational RF field exposures.
3
Content available Metal implants in ostheosynthesis - construction solutions, materials and applications
Hutnik A., Świeczko-Żurek B., Szumlański A., Serbiński W.
Engineering of Biomaterials
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2012
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Vol. 15, no. 115
7--11
EN
Every day human bones undergo different injuries resulting from public transport accidents, diseases or trauma. Consequently, they cause temporary or constant patients disability or even death. Fractures happen not only to elderly people suffering from osteoporosis, but also more and more frequently to young people, who got some injuries as a result of life style, e.g. doing sports. The desire to enhance the physical well being and quality of patients' life, who got some injury causes constant development of medical devices for osteosynthesis. In the case of complicated fractures, in which plaster treatment is not sufficient, surgical treatment and applying implant are indispensable. The aim of the article is to present two case studies on intramedullary nails. The first one concerns a method of osteosynthesis for a patient, who was injured in an accident. The second one presents the failure of the implanted intramedullary nail. The research included evaluation of the type of fracture and the analysis of microstructure, chemical composition and hardness of the implant materials.
4
Content available Zmiany powierzchni implantu metalowego pokrytego powłoką polimerową pod wpływem kontaktu z płynem fizjologicznym
Cieślik M., Engvall K., Pan J., Kotarba A.
Engineering of Biomaterials
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2010
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Vol. 13, no. 99-101
18--21
5
Content available Degradacja implantów metalicznych pokrytych srebrem
Świeczko-Żurek B., Pałubicka A., Bogdański M., Krzemiński M.
Engineering of Biomaterials
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2010
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Vol. 13, no. 99-101
58--60
6
Content available remote Allergies to implant metal compounds
Świeczko-Żurek W., Szumlański A.
Advances in Materials Science
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2009
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Vol. 9, nr 3(21)
39-46
EN
The surgical implants are made of different materials, such as cobalt alloys, titanium alloys and stainless steels. These materials contain little amount of carbon and significant amount of Cr, Ni and Mo. The metallic implants introduced into the human body undergo degradation mainly as a result of corrosion after a long use, due to aggressive biological impact between the implant surface and human body. This phenomenon is accompanied by the release of metal ions from implant surface, which gather in tissues surrounding the implant as well as the soft tissues (for eg. the liver).
7
Content available remote The degradation of metal implants
Świeczko-Żurek B., Krzemiński M.
Advances in Materials Science
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2008
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Vol. 8, nr 1(15)
179-183
EN
The presence of metal implants in the human body causes some dangers, which result from introducing another object into organism. There may occur a biocorrosion, which causes different modifications of implant surface.
8
Content available remote Allegry to chromium, nickel, cobalt and titanium with trauma-orthopedics patients
Szumlański A.
Advances in Materials Science
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2008
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Vol. 8, nr 2(16)
89-93
EN
The problems concerning re-operatiotis after joint implantation, as well as the occurrence of post-operation complications with trauma-orthopedics patients, who were given metal implants are constantly considered from medical and economical point of view. The most frequent reason for the re-operation is so called: aseptic loosening arthroplasty. The article presents the analysis of various clinical post-operation complications after the long-bone treatment by means of osteosynthesis with the use of metal implants and hip arthroplasty.
9
Content available Modyfikacja powierzchni tytanu powłoką diamentopodobną
Biel-Gołaska M., Kalemba I., Radzikowska J., Warmuzek M., Rajchel B., Rakowski W.
Inżynieria Biomateriałów
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2006
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R. 9, nr 56-57
1-11
PL
Artykuł dotyczy uszlachetniania powierzchni tytanu powłoką diamentopodobną w celu zwiększenia jego biotolerancji w organizmie ludzkim. Na powierzchni próbek z tytanu wytworzono ochronną warstwę diamentopodobną, stosując metodę implantacji jonowej. Dokonano oceny jej własności mechanicznych oraz adhezji do podłoża metalowego. Scharakteryzowano własności użytkowe implantów metalowych oraz stawiane im wymagania. Omówiono metodę jonową IBAD formowania powłok węglowych na materiałach metalowych, jak również metodykę badań wytrzymałości, mikrotwardości, szczelności i adhezji powłok do podłoża metalowego. Przedstawiono wyniki badań mechanicznych i adhezji do podłoża oraz zamieszczono sugestie odnośnie kierunków dalszych badań.
EN
Modification of the surface of titanium alloy biomaterial with the diamond-like carbon coating (DLC) in order to increase its biocompability in the human organism, its hardness and wear resistance were analyzed. The diamond-like carbon coatings were formed on the titanium specimens, then their adhesion to the metal substrate was evaluated. Ion Beam Assisted Deposition method was used for improving the titanium surface. The mechanical properties of the coating and substrate and adhesion to the base metal were evaluated. Morphology of titanium and the diamond-like carbon films were examined under the Light and Scanning Microscope. The microscopic examinations revealed satisfying structural homogeneity on the coated surface. The results of microstructural and mechanical tests as well as of those concerning the adhesion to the base are given. The utilization properties of metal implants and the requirements which are imposed onto them were characteristed.
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