Wyniki wyszukiwania - BazTech

1

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

Expandable endoprosthesis for growing patients - Reliability and research

Borkowski P., Skalski K.

Biocybernetics and Biomedical Engineering

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2014

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Vol. 34, no. 4

199--205

EN

Nowadays expandable endoprosthesis for growing children is an alternative to amputation in the course of surgical treatment. Modern non-invasive endoprosthesis gives the possibility of elongation without a surgical operation. In the paper, the results of research with the application of computer technique in geometrical modelling are presented, as well as the design and manufacture in processing the medical images and experimental studies during an initial estimation of a new expandable prosthesis construction for growing patients, which will lead to the preparation for production and implantation processes in Poland.

3

Biomechanical aspects of preoperative planning of skull correction in children with craniosynostosis

Larysz D., Wolański W., Kawlewska E., Mandera M., Gzik M.

Acta of Bioengineering and Biomechanics

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2012

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Vol. 14, no. 2

19-26

EN

Craniosynostosis is a birth defect that causes one or more sutures on a baby's head to close earlier than normal. In effect the growing brain determines an abnormal skull shape and, which is more important and more dangerous, it causes an elevated intracranial pressure. The only treatment for children with craniosynostosis is surgical cranioplasty. More extensive procedures yield excellent results, particularly in older children with moderate to severe deformity. However, in children undergoing more extensive reconstructions an essential requirement is blood transfusion. They are also put at risk of complications. In this paper, the authors propose a method of preoperative planning based on three-dimensional modelling and biomechanical investigations. We used Mimics, 3-matic and ANSYS software for the process. The proposed preoperative planning improved the preoperative knowledge of deformation, shortened the time of surgery, and subsequently reduced blood loss during the procedure.

4

Morphological analysis of the skull shape in craniosynostosis

Tajszerska D., Wolański W., Larysz D., Gzik M., Sacha E.

Acta of Bioengineering and Biomechanics

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2011

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Vol. 13, no. 1

35-40

EN

Craniosynostosis represents premature suture fusion of the fetal and neonatal skull. Pathogenesis of craniosynostosis is complex and probably multifactorial. Growth of skull bones is strictly connected with the expanding growth of the brain and cranial malformations or prematurely fused sutures cause abnormal head shape. In order to diagnose the craniosynostosis, physical examination, plain radiography, and computed tomography with 3D reconstructions are indispensable. Engineering software such as Mimics v.13.1 and 3-matic v.5.0 enables a 3-dimensional model of head to be generated, based on the pictures obtained from CT. It is also possible to indicate the distances between the characteristic anatomical points. These measures are helpful during planning the neurosurgical correction of the skull, because the possibility of strictly specifing incisions before surgery, which is very important to provide the maximal safety of a child.

5

Preoperative planning and intraoperative navigation in the reconstructive craniofacial surgery

Król Z., Chapuis J., Schwenzer-Zimmerer K., Langlotz F., Zeilhofer H.-F.

Journal of Medical Informatics & Technologies

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2005

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Vol. 9

83--89

EN

We present a methodology for navigation-aided surgical treatments in the reconstructive craniofacial surgery. Using the case of zygomatic bone repositioning after gunshot wound trauma the whole preoperative planning process and the intra-operative navigation oriented issues are explicitly described. We have focused our attention on the new navigation oriented aspects and procedures which facilitate and enhance the traditional treatment techniques. Many illustrations let better understand the complex technical dependencies between the main elements of this approach. The presented procedures permit more precise planning and performing of the surgical treatment, reducing intra-operative time and improving the post-operative outcome.