scholarly journals Validation of Numerically Simulated Rapid-prototype Model by Photoelastic Coating

2014 ◽  
Vol 18 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Peter Ficzere ◽  
Lajos Borbas ◽  
Adam Torok
Keyword(s):  
Rapid Prototype ◽  
Prototype Model ◽  
Photoelastic Coating

scholarly journals Occipitofrontal Switching for Simultaneous Correction of Synostotic Frontal and Occipital Plagiocephaly: A Novel Surgical Technique

2010 ◽  
Vol 3 (3) ◽  
pp. 161-166 ◽  
Author(s):  
Peter Chanwoo Kim ◽  
Yong Don Kim ◽  
Dae Hwan Park
Keyword(s):  
Rapid Prototype ◽  
Frontal Bone ◽  
Prototype Model ◽  
Virtual Surgery ◽  
Bone And Bones ◽  
Time Saving ◽  
Skull Model ◽  
Coronal Synostosis ◽  
Plaster Model

Plagiocephaly has traditionally been corrected by unilateral or bilateral frontal bone advancement or rotation using bone-molding forceps and distraction devices. Complete symmetrical correction of deformed frontal bones is considered almost impossible because the curvature of each frontal bone varies. We evaluated the feasibility of measuring the optimal curvature of frontal and occipital bones using a plaster skull model and applying these measurements to “switch” them for simultaneous correction of frontal and occipital plagiocephaly. A 2-year-old girl suffering from unifrontal flattening visited our clinic. Unilateral coronal synostosis was observed. The 3-D rapid prototype model and skull replica method using thin paper clay were used for preplanned virtual surgery. The triangular bone was harvested from the contralateral bulging side of the occipital bone (“occipitofrontal switching”) for the best optimal curvature in the affected frontal bone. Another triangular bone was harvested from the ipsilateral flattened side of the frontal bone, and bones were switched with each other. Further bending of the frontal or occipital segment was not necessary for optimal curvature. Symmetrical correction was made by switching the triangular bone of the frontal area with that of the contralateral occipital area. Revision has not been necessary, and infection was not observed at 1-year follow-up. Our novel technique of preplanning surgery using a 3-D plaster model for simultaneous correction of frontal and occipital plagiocephaly is effective and time-saving.

Patient-specific puzzle implant preformed with 3D-printed rapid prototype model for combined orbital floor and medial wall fracture

2018 ◽  
Vol 71 (4) ◽  
pp. 496-503 ◽  
Author(s):  
Young Chul Kim ◽  
Kyung Hyun Min ◽  
Jong Woo Choi ◽  
Kyung S. Koh ◽  
Tae Suk Oh ◽  
...  
Keyword(s):  
Rapid Prototype ◽  
Medial Wall ◽  
Orbital Floor ◽  
Patient Specific ◽  
Prototype Model ◽  
3D Printed

Customized Orbital Wall Reconstruction Using Three-Dimensionally Printed Rapid Prototype Model in Patients With Orbital Wall Fracture

2016 ◽  
Vol 27 (8) ◽  
pp. 2020-2024 ◽  
Author(s):  
Tae Suk Oh ◽  
Woo Shik Jeong ◽  
Taik Jin Chang ◽  
Kyung S. Koh ◽  
Jong-Woo Choi
Keyword(s):  
Rapid Prototype ◽  
Prototype Model ◽  
Orbital Wall

Simultaneous repair of two large cranial defects using rapid prototyping and custom computer-designed titanium plates: a case report

2011 ◽  
Vol 225 (11) ◽  
pp. 1108-1112 ◽  
Author(s):  
D A Morrison ◽  
D T Guy ◽  
R E Day ◽  
G Y F Lee
Keyword(s):  
Intractable Epilepsy ◽  
Rapid Prototype ◽  
Deep Infection ◽  
Prototype Model ◽  
Corpus Callosotomy ◽  
Software Products ◽  
Operative Complications ◽  
Titanium Cranioplasty ◽  
Head Computed Tomography ◽  
Tomography Scan

Custom titanium cranioplasty plates, manufactured by a variety of techniques, have been used to repair a range of cranial defects. The authors present a case where two relatively large, adjacent cranial defects were repaired by custom computer-designed titanium plates. The two plates were designed and fabricated simultaneously using a unique methodology. A 28-year-old woman underwent a corpus callosotomy for medically intractable epilepsy. The surgery was complicated by unexpected haemorrhage which necessitated a second craniotomy. Subsequent deep infection required the removal of bilateral bone flaps, presenting a challenge in the reconstruction of extensive, bilateral but asymmetrical cranial defects. The patient underwent a head computed tomography scan, from which a rapid-prototype model of the skull was produced. The surfaces for the missing cranial segments were generated virtually using a combination of software products and two titanium plates that followed these virtual contours were manufactured to cover the defects. The cranioplasty procedure to implant both titanium cranial plates was performed efficiently with no intra-operative complications. Intra-operatively, an excellent fit was achieved. The careful planning of the plates enhanced the relative ease with which the cranial defects were repaired with an excellent cosmetic outcome.

The accuracy of patient specific implant prebented with 3D-printed rapid prototype model for orbital wall reconstruction

2017 ◽  
Vol 45 (6) ◽  
pp. 928-936 ◽  
Author(s):  
Young Chul Kim ◽  
Woo Shik Jeong ◽  
Tae-kyung Park ◽  
Jong Woo Choi ◽  
Kyung S. Koh ◽  
...  
Keyword(s):  
Rapid Prototype ◽  
Patient Specific ◽  
Prototype Model ◽  
Orbital Wall ◽  
3D Printed

A novel method for early formal developments using computer aided design and rapid prototyping technology

2003 ◽  
Vol 217 (5) ◽  
pp. 695-698 ◽  
Author(s):  
P A Prieto ◽  
D K Wright ◽  
S F Qin
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Rapid Prototype ◽  
Physical Models ◽  
Prototype Model ◽  
Cad Model ◽  
Computer Aided ◽  
Cad Models ◽  
Novel Method ◽  
Aided Design

The paper describes a novel method for updating computer aided design (CAD) models with information taken from physical models in the early stages of design. The new approach is an image mapping based method in which an initial. CAD model is transferred to a soft rapid prototype model (RPM) made by a three-dimensional printer and sculpted in order to carry out formal developments. The RPM has a built-in contrasting three-dimensional grid composed of parallel orthogonal planes, and the initial CAD model is represented by cross-section curves corresponding to the RPM grid. The initial CAD geometry is then updated from images of the developed RPM by matching the differences between the initial CAD model and the modified RPM, making use of identical perspective transformations and viewpoints for the initial CAD model and an RPM image. Examples studied varied from a small depression on a cube face to general freeform surfaces. Compared with typical reverse engineering (RE) processes, the present approach is simpler and more direct. It is not necessary to use three-dimensional scanning or coordinate measuring devices for updating existing initial geometrical CAD models with data obtained from physical models.

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