Wyniki wyszukiwania - BazTech

1

Implant Safety Tool Application to Assist the Assessment of Radio-Frequency Radiation Exposure

Gas Piotr, Miaskowski Arkadiusz

Journal of Ecological Engineering

|

2019

|

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.

2

Experimental biomechanical assessment of plate stabilizers for treatment of pectus excavatum

Kajzer A., Kajzer W., Gzik-Zroska B., Wolański W., Janicka I., Dzielicki J.

Acta of Bioengineering and Biomechanics

|

2013

|

Vol. 15, no. 3

113--121

EN

The paper discusses results of experimental research involving new generation of plate stabilizers used for the treatment of deformation of the front chest wall. Previous clinical monitoring revealed instances of minimal rotation, which caused destabilization of the anastomosis and pain in patients. In order to prevent this, transverse stabilizing plates were introduced to the structure of the stabilizer. The new structure of stabilizers was tested using two specially prepared research posts: 1 – which enables fastening of the plate stabilizers to a platform simulating human ribs, 2 – using a pig chest, to which plates were fastened according to the stabilization conditions in the stabilizer–chest structure. The tests recorded displacement values in selected areas of the plates in response to applied loading forces.

3

The finite element model of the human rib cage

Awrejcewicz J., Łuczak B.

Journal of Theoretical and Applied Mechanics

|

2007

|

Vol. 45 nr 1

25-32

EN

In the paper, finite element analysis of the rib cage model is applied to recognize stress distributions and to determine the rate of bone fractures (especially for pathologically changed bones). Two thorax models are considered and the role of the implant is illustrated and discussed. The simulation result shows a good agreement wit h the cadaver test data.

PL

Artykuł przedstawia analizę wytrzymałościową klatki piersiowej metodą elementów skończonych. Przeprowadzone badania pozwalają na poznanie rozkładu naprężeń i odkształceń w klatce piersiowej oraz na ocenę miejsc najbardziej narażonych na złamania. Rozpatrzono dwa modele klatki piersiowej: pierwszy człowieka zdrowego oraz drugi człowieka po chirurgicznej operacji lejkowatej klatki piersiowej z zastosowaniem implantu. Opisano wpływ implantu na wytrzymałość klatki piersiowej.