keyword
MENU ▼
Read by QxMD icon Read
search

3d print

keyword
https://www.readbyqxmd.com/read/29443890/embedded-disposable-functionalized-electrochemical-biosensor-with-a-3d-printed-flow-cell-for-detection-of-hepatic-oval-cells-hocs
#1
Samar Damiati, Martin Peacock, Stefan Leonhardt, Laila Damiati, Mohammed A Baghdadi, Holger Becker, Rimantas Kodzius, Bernhard Schuster
Hepatic oval cells (HOCs) are considered the progeny of the intrahepatic stem cells that are found in a small population in the liver after hepatocyte proliferation is inhibited. Due to their small number, isolation and capture of these cells constitute a challenging task for immunosensor technology. This work describes the development of a 3D-printed continuous flow system and exploits disposable screen-printed electrodes for the rapid detection of HOCs that over-express the OV6 marker on their membrane. Multiwall carbon nanotube (MWCNT) electrodes have a chitosan film that serves as a scaffold for the immobilization of oval cell marker antibodies (anti-OV6-Ab), which enhance the sensitivity of the biomarker and makes the designed sensor specific for oval cells...
February 14, 2018: Genes
https://www.readbyqxmd.com/read/29442788/hydroxyapatite-nanoparticle-coated-3d-printed-porous-ti6al4v-and-cocrmo-alloy-scaffolds-and-their-biocompatibility-to-human-osteoblasts
#2
Wei Yuan, Xin He, Xiaoshu Zhou, Yue Zhu
Hydroxyapatite nanoparticles were prepared by hydrothermal method using calcium nitrate and phosphoric acid as precursors and ammonia aqueous solution as a pH value adjustor. The 3D-printed porous Ti6Al4V and CoCrMo alloy scaffolds were effectively coated with hydroxyapatite nanoparticles in the hydrothermal synthesis process by deposition method. Coating hydroxyapatite nanoparticles on the implant surfaces increased their biocompatibility and bioactivity. HAP-deposited Ti6Al4V or HAP-deposited CoCrMo scaffold induced no statistical increase in terms of apoptosis in hFOB1...
June 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29441429/three-dimensional-printing-improves-osteochondral-allograft-placement-in-complex-cases
#3
Kelechi R Okoroha, Timothy J Evans, Jeffrey P Stephens, Eric C Makhni, Vasilios Moutzouros
The use of three-dimensional (3D) printing has seen a vast expansion over recent years, with an increased application for its use in orthopaedics. This report details the use of 3D printing technology to aid in the treatment of a medial femoral condyle osteochondral defect in a 26-year-old female who had previously undergone a failed autograft procedure. A preoperative computed tomography scan of the knee and chondral defect was used to generate a 3D printed, one-to-one scale replica of the distal femur. This replica was then used to size a patient-specific allograft plug for the osteochondral transplantation procedure...
February 13, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29440763/rhythm-an-open-source-imaging-toolkit-for-cardiac-panoramic-optical-mapping
#4
Christopher Gloschat, Kedar Aras, Shubham Gupta, N Rokhaya Faye, Hanyu Zhang, Roman A Syunyaev, Roman A Pryamonosov, Jack Rogers, Matthew W Kay, Igor R Efimov
Fluorescence optical imaging techniques have revolutionized the field of cardiac electrophysiology and advanced our understanding of complex electrical activities such as arrhythmias. However, traditional monocular optical mapping systems, despite having high spatial resolution, are restricted to a two-dimensional (2D) field of view. Consequently, tracking complex three-dimensional (3D) electrical waves such as during ventricular fibrillation is challenging as the waves rapidly move in and out of the field of view...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29439905/three-dimensional-intracranial-middle-cerebral-artery-aneurysm-models-for-aneurysm-surgery-and-training
#5
Liang Wang, Xun Ye, Qiang Hao, Li Ma, Xiaolin Chen, Hao Wang, Yuanli Zhao
To develop a realistic model of middle cerebral artery (MCA) aneurysms using three-dimensional (3D) printing for surgical planning, research, and training of neurosurgical residents. This study included eight MCA aneurysm cases. The aneurysm together with the adjacent arteries and skull base were printed based on raw computed tomography angiography (CTA) data using a 3D printer with acrylonitrile-butadiene-styrene as the model material. The aneurysm models were used for surgical planning, and craniotomy and clipping practice by neurosurgical residents...
February 10, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29438478/corrigendum-to-scaffold-free-trachea-regeneration-by-tissue-engineering-with-bio-3d-printing-interact-cardiovasc-thorac-surg-2018
#6
Daisuke Taniguchi, Keitaro Matsumoto, Tomoshi Tsuchiya, Ryusuke Machino, Yosuke Takeoka, Abdelmotagaly Elgalad, Kiyofumi Gunge, Katsunori Takagi, Yasuaki Taura, Go Hatachi, Naoto Matsuo, Naoya Yamasaki, Koichi Nakayama, Takeshi Nagayasu
No abstract text is available yet for this article.
February 9, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29438318/touch-locating-and-stretch-sensing-studies-of-conductive-hydrogels-with-applications-to-soft-robots
#7
Yanmin Zhou, Bin He, Zhe Yan, Yinghui Shang, Qigang Wang, Zhipeng Wang
Soft robots possess great potential in environmental adaptations, while their environmental sensing abilities are critical. Conductive hydrogels have been suggested to possess sensing abilities. However, their application in soft robots is lacking. In this work, we fabricated a soft and stretchable gel material, introduced its sensing mechanisms, and developed a measurement setup. Both experimental and simulation studies indicate strong nonlinearity of touch locating on a square touch panel with Cartesian coordinates...
February 13, 2018: Sensors
https://www.readbyqxmd.com/read/29437509/3d-printed-models-of-cleft-lip-and-palate-for-surgical-training-and-patient-education
#8
Pang-Yun Chou, Rami R Hallac, Ellen Shih, Jenny Trieu, Anjani Penumatcha, Priyanka Das, Clark A Meyer, James R Seaward, Alex A Kane
BACKGROUND: Sculpted physical models and castings of the anatomy of cleft lip and palate are used for parent, patient, and trainee education of cleft lip and palate conditions. In this study, we designed a suite of digital 3-dimensional (3D) models of cleft lip and palate anatomy with additive manufacturing techniques for patient education. METHODS: CT scans of subjects with isolated cleft palate, unilateral and bilateral cleft lip and palate, and a control were obtained...
March 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29436243/the-impact-of-using-three-dimensional-printed-liver-models-for-patient-education
#9
Tianyou Yang, Tianbao Tan, Jiliang Yang, Jing Pan, Chao Hu, Jiahao Li, Yan Zou
Objective To investigate the impact of using a three-dimensional (3D) printed liver model for patient education. Methods Children with hepatic tumours who were scheduled for hepatectomy were enrolled, and patient-specific 3D liver models were printed with photosensitive resin, based on computed tomography (CT) images. Before surgery, their parents received information regarding liver anatomy, physiology, tumour characteristics, planned surgery, and surgical risks using these CT images. Then, parents completed questionnaires regarding this information...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29434327/iterative-feedback-bio-printing-derived-cell-laden-hydrogel-scaffolds-with-optimal-geometrical-fidelity-and-cellular-controllability
#10
Ling Wang, Ming-En Xu, Li Luo, Yongyong Zhou, Peijian Si
For three-dimensional bio-printed cell-laden hydrogel tissue constructs, the well-designed internal porous geometry is tailored to obtain the desired structural and cellular properties. However, significant differences often exist between the designed and as-printed scaffolds because of the inherent characteristics of hydrogels and cells. In this study, an iterative feedback bio-printing (IFBP) approach based on optical coherence tomography (OCT) for the fabrication of cell-laden hydrogel scaffolds with optimal geometrical fidelity and cellular controllability was proposed...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29433862/three-dimensionally-printed-bioactive-ceramic-scaffold-osseoconduction-across-critical-sized-mandibular-defects
#11
Christopher D Lopez, J Rodrigo Diaz-Siso, Lukasz Witek, Jonathan M Bekisz, Bruce N Cronstein, Andrea Torroni, Roberto L Flores, Eduardo D Rodriguez, Paulo G Coelho
BACKGROUND: Vascularized bone tissue transfer, commonly used to reconstruct large mandibular defects, is challenged by long operative times, extended hospital stay, donor-site morbidity, and resulting health care. 3D-printed osseoconductive tissue-engineered scaffolds may provide an alternative solution for reconstruction of significant mandibular defects. This pilot study presents a novel 3D-printed bioactive ceramic scaffold with osseoconductive properties to treat segmental mandibular defects in a rabbit model...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29432987/3d-printed-microchannel-networks-to-direct-vascularisation-during-endochondral-bone-repair
#12
Andrew C Daly, Pierluca Pitacco, Jessica Nulty, Gráinne M Cunniffe, Daniel J Kelly
Bone tissue engineering strategies that recapitulate the developmental process of endochondral ossification offer a promising route to bone repair. Clinical translation of such endochondral tissue engineering strategies will require overcoming a number of challenges, including the engineering of large and often anatomically complex cartilage grafts, as well as the persistence of core regions of avascular cartilage following their implantation into large bone defects. Here 3D printing technology is utilized to develop a versatile and scalable approach to guide vascularisation during endochondral bone repair...
February 1, 2018: Biomaterials
https://www.readbyqxmd.com/read/29432945/utility-of-3d-printed-models-in-enhancing-the-learning-curve-of-surgery-of-tuberculum-sellae-meningioma
#13
De-Zhi Kang, Ping Chen, Qing-Song Lin, Yuan-Xiang Lin, Xi-Yue Wu, Pei-Sen Yao
OBJECTIVE: To investigate the value of 3D printed models with pathological entities in enhancing the learning curve of surgery of tuberculum sellae meningioma. METHODS: We printed four 3D printed models of tuberculum sellae meningiomas based on radiological data using a 3D printer. Participants were allocated to 3D group and atlas group. In the 3D group, participants learned surgery with the assistance of 3D models. In the atlas group, participants used only two-dimensional materials to assist their learning...
February 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29431767/liquid-crystal-based-sensing-device-using-a-smartphone
#14
Rajib Nandi, Santanu Kumar Pal
Liquid crystal (LC) based optical sensors have been found to be very promising for detecting aqueous biological samples due to the ease of optical detection, their cost effectiveness and the removal of the need for labelling biological species with fluorescent dyes. To date, all LC based sensors are studied in laboratories using conventional polarizing optical microscopy (POM), and no attention has been paid towards the fabrication of portable LC sensing devices for use in commercial purposes. Here, we designed and fabricated a 3D printed portable, lightweight, and inexpensive sensing device using a smartphone to detect the optical signal of LC based sensors...
February 12, 2018: Analyst
https://www.readbyqxmd.com/read/29429837/direct-3d-printing-of-silicone-facial-prostheses-a-preliminary-experience-in-digital-workflow
#15
Alexey Unkovskiy, Sebastian Spintzyk, Joern Brom, Fabian Huettig, Constanze Keutel
Direct silicone printing may be applied to the fabrication of maxillofacial prostheses, although its clinical feasibility is unknown. The present clinical report shows an early application of a directly printed silicone prosthesis for the rehabilitation of a nasal defect. Two extraoral scanning systems were used to capture the face and the defect. The virtual construction of the nasal prosthesis was performed with free-form software. Two prostheses were printed in silicone and post-processed by manual sealing and coloring...
February 8, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29429290/-the-application-progress-of-3d-printing-technology-in-ophthalmology
#16
Z K Ji, Y Zhao, S S Yu, H Zhao
3D printing is a kind of technology that makes 3D models from computer-aided designs through additive manufacturing, in which successive layers of the material are deposited onto underlying layers to construct 3D objects. In recent years, 3D printing is gradually applied in the field of ophthalmology, such as the cornea, retina, orbital operation, ocular tumor radiotherapy, ocular implants and ophthalmology teaching. This article reviews the application status of 3D printing technology in the basic research and clinical treatment in ophthalmology...
January 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29428560/enabling-personalized-implant-and-controllable-biosystem-development-through-3d-printing
#17
REVIEW
Neerajha Nagarajan, Agnes Dupret-Bories, Erdem Karabulut, Pinar Zorlutuna, Nihal Engin Vrana
The impact of additive manufacturing in our lives has been increasing constantly. One of the frontiers in this change is the medical devices. 3D printing technologies not only enable the personalization of implantable devices with respect to patient-specific anatomy, pathology and biomechanical properties but they also provide new opportunities in related areas such as surgical education, minimally invasive diagnosis, medical research and disease models. In this review, we cover the recent clinical applications of 3D printing with a particular focus on implantable devices...
February 8, 2018: Biotechnology Advances
https://www.readbyqxmd.com/read/29427531/osseointegration-of-3d-printed-microalloyed-cocr-implants-addition-of-0-04-zr-to-cocr-does-not-alter-bone-material-properties
#18
Furqan A Shah, Edvin Jergéus, Akihiko Chiba, Anders Palmquist
Electron beam melting (EBM) is a 3D printing technique for the production of metal structures where complex geometries with interconnected porosities can be built. Incorporation of as little as 0.04% Zr into the CoCr alloy can significantly improve the biomechanical anchorage of constructs fabricated by EBM. Here we investigate bone material properties, including microstructure and composition, adjacent to 3D printed CoCr implants with and without addition of 0.04% Zr, after 8 weeks of healing in the rabbit femur...
February 10, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29426947/additive-manufacturing-of-3d-nano-architected-metals
#19
Andrey Vyatskikh, Stéphane Delalande, Akira Kudo, Xuan Zhang, Carlos M Portela, Julia R Greer
Most existing methods for additive manufacturing (AM) of metals are inherently limited to ~20-50 μm resolution, which makes them untenable for generating complex 3D-printed metallic structures with smaller features. We developed a lithography-based process to create complex 3D nano-architected metals with ~100 nm resolution. We first synthesize hybrid organic-inorganic materials that contain Ni clusters to produce a metal-rich photoresist, then use two-photon lithography to sculpt 3D polymer scaffolds, and pyrolyze them to volatilize the organics, which produces a >90 wt% Ni-containing architecture...
February 9, 2018: Nature Communications
https://www.readbyqxmd.com/read/29425777/easy-to-perform-and-cost-effective-fabrication-of-continuous-flow-reactors-and-their-application-for-nanomaterials-synthesis
#20
Domenico Andrea Cristaldi, Fatih Yanar, Ali Mosayyebi, Pablo García-Manrique, Eugen Stulz, Dario Carugo, Xunli Zhang
The translation of continuous-flow microreactor technology to the industrial environment has been limited by cost and complexity of the fabrication procedures and the requirement for specialised infrastructure. In the present study, we have developed a significantly cost-effective and easy-to-perform fabrication method for the generation of optically transparent, continuous-flow reactors. The method combines 3D printing of master moulds with sealing of the PDMS channels' replica using a pressure-sensitive adhesive tape...
February 6, 2018: New Biotechnology
keyword
keyword
41634
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"