Toward the improvement of 3D-printed vessels’ anatomical models for robotic surgery training

2019 ◽  
Vol 42 (10) ◽  
pp. 558-565
Author(s):  
S Marconi ◽  
E Negrello ◽  
V Mauri ◽  
L Pugliese ◽  
A Peri ◽  
...  
Keyword(s):  
Robotic Surgery ◽  
Surgical Simulation ◽  
Three Dimensional ◽  
Morphological Properties ◽  
Patient Specific ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Vascular Structures ◽  
Dimensional Printing ◽  
Actual Size

Multi-Detector Computed Tomography is nowadays the gold standard for the pre-operative imaging for several surgical interventions, thanks to its excellent morphological definition. As for vascular structures, only the blood flowing inside vessels can be highlighted, while vessels’ wall remains mostly invisible. Image segmentation and three-dimensional-printing technology can be used to create physical replica of patient-specific anatomy, to be used for the training of novice surgeons in robotic surgery. To this aim, it is fundamental that the model correctly resembles the morphological properties of the structure of interest, especially concerning vessels on which crucial operations are performed during the intervention. To reach the goal, vessels’ actual size must be restored, including information on their wall. Starting from the correlation between vessels’ lumen diameter and their wall thickness, we developed a semi-automatic approach to compute the local vessels’ wall, bringing the vascular structures as close as possible to their actual size. The optimized virtual models are suitable for manufacturing by means of three-dimensional-printing technology to build patient-specific phantoms for the surgical simulation of robotic abdominal interventions. The proposed approach can effectively lead to the generation of vascular models of optimized thickness wall. The feasibility of the approach is also tested on a selection of clinical cases in abdominal surgery, on which the robotic surgery is performed on the three-dimensional-printed replica before the actual intervention.

Feasibility and potential of three-dimensional printing in laryngotracheal stenosis

2019 ◽  
Vol 133 (06) ◽  
pp. 530-534 ◽  
Author(s):  
Z Richard ◽  
E Jackson ◽  
J P Jung ◽  
S P Kanotra
Keyword(s):  
Surgical Simulation ◽  
Tertiary Care ◽  
Three Dimensional ◽  
Case Series ◽  
Patient Specific ◽  
Tracheal Resection ◽  
Laryngotracheal Stenosis ◽  
Three Dimensional Printing ◽  
Clinical Scenarios ◽  
Dimensional Printing

AbstractBackgroundThe use of three-dimensional printing has been rapidly expanding over the last several decades. Virtual surgical three-dimensional simulation and planning has been shown to increase efficiency and accuracy in various clinical scenarios.ObjectivesTo report the feasibility of three-dimensional printing in paediatric laryngotracheal stenosis and discuss potential applications of three-dimensional printed models in airway surgery.MethodRetrospective case series in a tertiary care aerodigestive centre.ResultsThree-dimensional printing was undertaken in two cases of paediatric laryngotracheal stenosis. One patient with grade 4 subglottic stenosis with posterior glottic involvement underwent an extended partial cricotracheal reconstruction. Another patient with grade 4 tracheal stenosis underwent tracheal resection and end-to-end anastomosis. Models of both tracheas were printed using PolyJet technology from a Stratasys Connex2 printer.ConclusionIt is feasible to demonstrate stenosis in three-dimensional printed models, allowing for patient-specific pre-operative surgical simulation. The models serve as an educational tool for patients’ understanding of the surgery, and for teaching residents and fellows.

scholarly journals Characteristic of materials for the 3D printed building constructions by additive printing

2018 ◽  
Vol 222 ◽  
pp. 01013 ◽  
Author(s):  
Katarzyna Pacewicz ◽  
Anna Sobotka ◽  
Łukasz Gołek
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
New Technology ◽  
Setting Time ◽  
Three Dimensional ◽  
Construction Site ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Materials Used ◽  
Dimensional Printing

Three dimensional printing is a promising new technology to erect construction objects. Around the world in every moment a new prototypes constructions are made by using this method. Three dimensional printing is taken into account as technology which can be used to print constructions in automated way on the Moon or Mars. The raw materials, which can be used with three dimensional printing have to fulfil basic requirements for those which are used in construction. That means that components of printing mortars are made from ingredients easily accessible in area nearby construction site and can be reusable. The cost of printing building objects due to that requirements is comparable to costs of traditional building, which are currently available. However additive techniques of printing needs a dedicated mortars for printer supplying. Characteristic for such mortars is: setting time, compressive strength, followability in the printing system, shape stability of every printed layer, controlling the hydration rate to ensure bonding with the subsequent layer, reusable capabilities, easily accessible raw materials, cost of such mixtures shouldn’t be too high in order to keep 3D printing competitive for traditional ways of building, mortar components should be recyclable and printing process should not influence negatively on an environment and people. All properties of printing mortars are determined by the device for additive application method. In this paper review of available materials used for three dimensional printing technology at construction site is presented. Presented materials were analysed in terms of requirements for building materials technology. Due to the lack of detailed information’s in available literature, regarding to the properties of raw materials, the results of this analysis may be used in the designing of new concrete mixtures for the use in three-dimensional printing technology for construction.

scholarly journals Generating brain matrices for zebra finch brain sectioning using three-dimensional printing technology

2019 ◽  
Vol 327 ◽  
pp. 108399
Author(s):  
Chun-Cheng Huang ◽  
Yi-Ying Chen ◽  
Yi-Ting Fang ◽  
Yu-Chi Chen ◽  
Chih-Ming Hung
Keyword(s):  
Zebra Finch ◽  
Three Dimensional ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Dimensional Printing

scholarly journals Three-dimensional Printing in Maxillofacial Surgery: Hype versus Reality

2018 ◽  
Vol 9 ◽  
pp. 204173141877090 ◽  
Author(s):  
Alaa Aldaadaa ◽  
Nazanin Owji ◽  
Jonathan Knowles
Keyword(s):  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Review Of Literature ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Dimensional Printing

Three-dimensional printing technology is getting more attention recently, especially in the craniofacial region. This is a review of literature enlightening the materials that have been used to date and the application of such technology within the scope of maxillofacial surgery.

Intraocular Lens Model and Its Three-Dimensional Printing Technology Based on Human Eye Data in China

2020 ◽  
Vol 57 (21) ◽  
pp. 213301
Author(s):  
王丹琦 Wang Danqi ◽  
袁群 Yuan Qun ◽  
殷长俊 Yin Changjun ◽  
高志山 Gao Zhishan ◽  
李新华 Li Xinhua
Keyword(s):  
Intraocular Lens ◽  
Three Dimensional ◽  
Lens Model ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Human Eye ◽  
Dimensional Printing

scholarly journals Main Clinical Use of Additive Manufacturing (Three-Dimensional Printing) in Finland Restricted to the Head and Neck Area in 2016–2017

2019 ◽  
Vol 109 (2) ◽  
pp. 166-173 ◽  
Author(s):  
A.B.V. Pettersson ◽  
M. Salmi ◽  
P. Vallittu ◽  
W. Serlo ◽  
J. Tuomi ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Patient Specific ◽  
Future Research ◽  
Imaging Data ◽  
University Hospitals ◽  
Three Dimensional Printing ◽  
Dimensional Printing ◽  
Head Area

Background and Aims: Additive manufacturing or three-dimensional printing is a novel production methodology for producing patient-specific models, medical aids, tools, and implants. However, the clinical impact of this technology is unknown. In this study, we sought to characterize the clinical adoption of medical additive manufacturing in Finland in 2016–2017. We focused on non-dental usage at university hospitals. Materials and Methods: A questionnaire containing five questions was sent by email to all operative, radiologic, and oncologic departments of all university hospitals in Finland. Respondents who reported extensive use of medical additive manufacturing were contacted with additional, personalized questions. Results: Of the 115 questionnaires sent, 58 received answers. Of the responders, 41% identified as non-users, including all general/gastrointestinal (GI) and vascular surgeons, urologists, and gynecologists; 23% identified as experimenters or previous users; and 36% identified as heavy users. Usage was concentrated around the head area by various specialties (neurosurgical, craniomaxillofacial, ear, nose and throat diseases (ENT), plastic surgery). Applications included repair of cranial vault defects and malformations, surgical oncology, trauma, and cleft palate reconstruction. Some routine usage was also reported in orthopedics. In addition to these patient-specific uses, we identified several off-the-shelf medical components that were produced by additive manufacturing, while some important patient-specific components were produced by traditional methodologies such as milling. Conclusion: During 2016–2017, medical additive manufacturing in Finland was routinely used at university hospitals for several applications in the head area. Outside of this area, usage was much less common. Future research should include all patient-specific products created by a computer-aided design/manufacture workflow from imaging data, instead of concentrating on the production methodology.

Analysis of Forming Process and Enabling Techniques for Three Dimensional Printing Technology

2013 ◽  
Vol 318 ◽  
pp. 239-242
Author(s):  
Hong Qi Luo ◽  
Zhong De Shan ◽  
Feng Liu ◽  
Yan Zheng Li
Keyword(s):  
Three Dimensional ◽  
Direct Writing ◽  
Forming Process ◽  
Indirect Methods ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Metal Parts ◽  
Overall Design ◽  
Dimensional Printing ◽  
Direct And Indirect Methods

Basic principle and forming process of three dimensional printing technology were introduced. The driving technology was researched from micro transporting methods of droplet jet and direct writing with dip-pen. The choice of drive technology directly determines overall design of the driver, and decides the best performance. The direct and indirect methods were analyzed to manufacture metal parts with three dimensional printing technology, which has better developing potentialities and expansive applying foreground.

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