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Implanty do rekonstrukcji opony twardej – przegląd isntniejących rozwiązań

Andrzejewska A., Mazurkiewicz A.

Aktualne Problemy Biomechaniki

2014

z. 8

7--12

W pracy poruszono zagadnienie biomateriałów stosowanych w neurochirurgii. Dokonano przeglądu dostępnych na rynku kolagenowych folii do zaopatrywania ubytków opony twardej oraz porównania ich właściwości z opatentowanym w 2006 r. substytutem opony twardej (EP 1484070 B1).

In this paper describes biomaterials, which are used in neurosurgery. This paper is a review of existing solutions of collagen dura mater substitute. Properties each of featured solutions was compared with properties of patented in 2006 dura mater substitute (EP 1484070 B1).

Mechanical properties of cervical dura mater

Mazgajczyk E., Ścigała K., Czyż M., Jarmundowicz W., Będziński R.

Acta of Bioengineering and Biomechanics

2012

Vol. 14, no. 1

51-58

The aim of the study was to determine experimentally the stress as strain function as well as the orthotropy and heterogeneity of porcine dura mater of the cervical spinal cord. Material was divided into groups based on the place of collection, considering the dorsal side and ventral side, specifying the number of cervical vertebra, and the direction of tension of the sample - longitudinal or circumferential. Experimental studies were conducted with the MTS Synergie 100 testing machine. The tensile test was performed for each sample at a speed of 2 mm/min until the sample's break. There were determined the characteristics of stress as a function of strain in particular samples. Distribution maps of the stress and strain values at the characteristic points were then drawn (the beginning and the end of the linear range of the stress-strain characteristic and the point corresponding to the complete sample damage) for each set of samples, taking account of their collection place and direction of tension. The results confirmed the orthotropy of mechanical properties of dura mater. Stress and strain differed also in the value at the height of each vertebra and exhibited diversification on the ventral side compared to dorsal one.