Frontal sinus models and onlay templates in osteoplastic flap surgery

2010 ◽  
Vol 125 (1) ◽  
pp. 82-85 ◽  
Author(s):  
M Daniel ◽  
J Watson ◽  
E Hoskison ◽  
A Sama

AbstractObjective:Precise delineation of the extent of frontal sinus pneumatisation is a crucial step in osteoplastic flap frontal sinus surgery. The authors present a novel method of achieving this objective.Methods:First, models of the frontal area are generated using three-dimensional printing based on pre-operative computed tomography image data. These models are then used to create an onlay template of the frontal sinus, which is used intra-operatively.Results:In a series of 10 patients undergoing osteoplastic flap frontal sinus surgery, the described frontal sinus templates were consistently accurate to within 1 mm.Conclusion:Frontal sinus templates are potentially useful adjuncts to current techniques employed to guide frontal sinus surgery.

2011 ◽  
Vol 383-390 ◽  
pp. 5810-5817 ◽  
Author(s):  
Yu Fang Zhu ◽  
Chen Peng ◽  
Ji Quan Yang ◽  
Chang Ming Wang

A novel method for the design and fabrication of heterogeneous objects is presented, which combines the Three Dimensional Printing (3DP) and micro droplets dispensing technology. It provides a solution to the fabrication of assemblies with multi materials, which can not be fabricated by traditional processes. An integrated design and fabrication system for heterogeneous objects based on the new process is introduced. Its constructive representation scheme is described. To show the effectiveness of the working process of multi-materials, based on slice software of color STL model and developing prototyping system, an example is shown to illustrate the entire design-fabrication cycle for heterogeneous objects.


2016 ◽  
Vol 51 (5) ◽  
pp. 530-533 ◽  
Author(s):  
Yong Cheng ◽  
Lucas D Liepert ◽  
Justin Waller ◽  
W Matthew Leevy ◽  
Jeff S Schorey

Intratracheal injection is a traditional technique used in small animal studies of highly contagious airborne pathogens such as Mycobacterium tuberculosis. However, current techniques of intratracheal injection generally involve procedures that pose a risk of incident injury and infection for researchers, and may also cause collateral damage to experimental animals during the installation process. Here we describe an intratracheal injection method that was enabled by a three dimensional printing of a custom platform. This updated technique improved the overall ergonomics of intratracheal injection in mice, minimizing the risk of human injury and implementing the 3R (replacement, reduction and refinement) principle in mouse infection studies.


2015 ◽  
Vol 2015 (CICMT) ◽  
pp. 000305-000313
Author(s):  
D. Polsakiewicz ◽  
W. Kollenberg

Inkjet printing of conductive silver lines on solid or flexible substrates for the fabrication of electronic components has been reported in a variety of ways over more than the last decade. Numerous publications highlight the importance of the silver source for the feasibility of the process as well as the resulting properties of the printed structures. In previous work [1] we reported the first experimental attempt to realize such conductive silver components inside a structure printed with a custom three dimensional powder printer. Aim of this study was to combine the functionality of directly printed functional elements with the geometrical flexibility of powder-based three-dimensional printing. While functionality in the printed glass/metallic compound is achieved in principle, an inhomogeneous microstructure with differentiated silver and glass areas is observed. In this article the silver source for the printing process is varied in order to achieve a homogeneous compound in desired areas. Three different metallic sources were used, namely a diluted screen-printing paste, a silver nitrate solution and silver particles formed by a previously reported polyol process. Ink were formulated from mentioned silver sources and printed with a glass powder. The fabricated samples are investigated in terms of their microstructure evolution and part functionality. The microstructure evolution is discussed in regard to the selected silver source. Additionally, the thermal treatment of the structures is optimized in order to ensure the optimum microstructure and part functionality. The reported experiments present the further development for a unique and novel method for fabricating glass/metal compounds by powder-based three-dimensional printing, allowing for the expansion of the process into novel applications.


2019 ◽  
Vol 134 (1) ◽  
pp. 14-19 ◽  
Author(s):  
G Chen ◽  
M Jiang ◽  
J Coles-Black ◽  
K Mansour ◽  
J Chuen ◽  
...  

AbstractObjectiveThree-dimensional printing is a revolutionary technology that is disrupting the status quo in surgery. It has been rapidly adopted by otolaryngology as a tool in surgical simulation for high-risk, low-frequency procedures. This systematic review comprehensively evaluates the contemporary usage of three-dimensional printed otolaryngology simulators.MethodA systematic review of the literature was performed with narrative synthesis.ResultsTwenty-two articles were identified for inclusion, describing models that span a range of surgical tasks (temporal bone dissection, airway procedures, functional endoscopic sinus surgery and endoscopic ear surgery). Thirty-six per cent of articles assessed construct validity (objective measures); the other 64 per cent only assessed face and content validity (subjective measures). Most studies demonstrated positive feedback and high confidence in the models’ value as additions to the curriculum.ConclusionWhilst further studies supported with objective metrics are merited, the role of three-dimensional printed otolaryngology simulators is poised to expand in surgical training given the enthusiastic reception from trainees and experts alike.


2009 ◽  
Vol 00 (00) ◽  
pp. 090730035508060-7
Author(s):  
Deng-Guang Yu ◽  
Chris Branford-White ◽  
Yi-Cheng Yang ◽  
Li-Min Zhu ◽  
Edward William Welbeck ◽  
...  

2016 ◽  
Vol 77 (S 01) ◽  
Author(s):  
Smita Upadhyay ◽  
Lamia Buohliqah ◽  
Gerival Junior ◽  
Bradley Otto ◽  
Daniel Prevedello ◽  
...  

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