ViewSite Brain Access System (VBAS)











Peer Reviewed Clinical Studies

Utilizing tubular retractors in colloid cyst resection: A single surgeon experience
Authors: Muhammet Enes Gurses, Victor M. Lu, Neslihan Nisa Gecici, Khushi Hemendra Shah, Elif Gökalp, Malek Bashti, Sameah Haider, Ricardo J. Komotar
Publication: Surgical Neurology International May 2024
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Minimally invasive craniotomy for putaminal hemorrhage using a tubular retractor: A technical note
Authors: Takuto Kuwajima, Mikiya Beppu, Shinichi Yoshimura.
Publication: Surgical Neurology International May 2024
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Cylinder tumor surgery in pediatric low‑grade gliomas
Authors: Sebastian Gaston Jaimovich, Kazuhito Takeuchi, Victoria Tcherbbis Testa, Eriko Okumura, Roberto Jaimovich, Giuseppe Cinalli.
Publication: Child’s Nervous System April 2024
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Minimally invasive resection of intracranial lesions using tubular retractors: A single surgeon series
Authors: Muhammet Enes Gurses, Elif Gokalp, Neslihan Nisa Gecici, Victor M. Lu, Khushi Hemendra Shah, Eric Singh, Angela Luo, Ashish H. Shah, Michael E. Ivan, Ricardo J. Komotar.
Publication: Clinical Neurology and Neurosurgery April 2024
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A comparison of brain retraction mechanisms using finite element analysis and the effects of regionally heterogeneous material properties
Authors: Emma Grifths, Jayaratnam Jayamohan and Silvia Budday
Publication: Biomechanics and Modeling in Mechanobiology February 2024
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Impact of Preoperative Mapping and Intraoperative Neuromonitoring in Minimally Invasive Parafascicular Surgery for Deep-Seated Lesions
Authors: Siddharth Sinha, Nida Kalyal, Mathew J. Gallagher, Daniel Richardson, Dimitrios Kalaitzoglou, Ahmed Abougamil, Melissa Silva, Anna Oviedova, Sabina Patel, Ana Mirallave-Pescador, Cristina Bleil, Bassel Zebian, Richard Gullan, Keyoumars Ashkan, Francesco Vergani, Ranjeev Bhangoo, JoséPedro Lavrador.
Publication: World Neurosurgery January 2024
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Robotically facilitated parafasicular microsurgery to a brain arteriovenous malformation in a paediatric patient
Authors: Ahmed Abougamil, Harishchandra L Srinivasan, Carlos E. Fiandeiro, Robin D C Kumar, Steven Bibby, Thomas C. Booth, Harutomo Hasegawa and Daniel C. Walsh
Publication: British Journal of Neurosurgery August 2023
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Standardization of Strategies to Perform a Parafascicular Tubular Approach for the Resection of Brain Tumors in Eloquent Areas Guidance: The Minefield Paradigm
Authors: Nadin J. Abdala-Vargas Giuseppe E. Umana, Javier G. Patiño-Gomez , Edgar Ordoñez-Rubiano, Hernando A. Cifuentes-Lobelo, Paolo Palmisciano, Gianluca Ferini, Anna Viola, Valentina Zagardo, Daniel Casanova-Martínez,  Ottavio S. Tomasi, Alvaro Campero and Matias Baldoncini
Publication: Operative Brain Sciences March 2023
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Minimally Invasive Surgery of Deep-Seated Brain Lesions Using Tubular Retractors and Navigated Transcranial Magnetic Stimulation-Based Diffusion Tensor Imaging Tractography Guidance: The Minefield Paradigm
Authors: Filippo Flavio Angileri, Giovanni Raffa, Giuseppina Marzano, Antonino Germano, Antonello Curcio, Francesca Granata
Publication: Operative Neurosurgery February 2023
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Surgical cytoreduction of deep-seated high-grade glioma through tubular retractor
Authors: Sabastian Hajtovic, James Sun, Jasjit S. Multani,  Linda L. Herrmann, Hannah Britton,  Jose Gautreaux,  Lea Tortolero,  Gillian Harrison, John G. Golfinos,  Timothy M. Shepherd,  Omar Tanweer,  and Dimitris G. Placantonakis
Publication: Journal of Neurosurgery November 2022
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Minimally invasive image‑guided endoscopic evacuation of intracerebral haemorrhage: How I Do it
Authors: Tim Jonas Hallenberger, Raphael Guzman
Publication: Acta Neurochirurgica August 2022
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Intraventricular Choroid Plexus Cavernoma Resection using Tubular Retraction System and Exoscope Visualization: A Technical Case Report
Authors: Li, B., Kim, M.G., Dominguez, J., Feldstein, E., Kleinman, G., Hanft
Publication: Operative Neurosurgery January 2022
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Combined Endoscopic Transsphenoidal and Tubular Retractor-Assisted Transventricular Approach for Giant Pituitary Adenomas (GPA)
Authors: Guinto-Nishimura GY, Caballero-Delgado S, Eguiluz-Meléndez AG, Ortega-Porcavo, L.A., Valencia-Ramos, C., Aragon-Arreoia, J.F., Portocarrero, L., Sangrador-Deitos, M.V., Gómez-Amador, J.L
Publication: World Neurosurgery November 2021
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The use of exoscope combined with tubular retractor system for minimally invasive transsulcal resection of a ventricular atrium atypical choroid plexus papilloma: Three-dimensional operative video
Authors: Cuellar-Hernandez, J.J., Lopez-Gonzalez, M.A., Olivas-Campos, J.R., Tabera-Tarello, P.M., Seañez-Prieto, C., Eastin, T.M., Song
Publication: Surgical Neurology International September 2021
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Microsurgical endoportal MRI/US-navigated approach for the resection of large intraventricular tumours: a 20-consecutive patients case series
Authors: Jody Filippo Capitanio, Carmine Antonio Donofrio, Pietro Panni, Lina Raffaella Barzaghi, Michele Bailo, Filippo Gagliardi and Pietro Mortini
Publication: British Journal of Neurosurgery August 2021
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Minimally invasive surgery with tubular retractor system for deep-seated or intraventricular brain tumors: Report of 13 cases and technique description
Authors: Alberto Valarezo-Chuchuca, Leah Morejo ́n-Hasing, Xavier Wong-Achi, Maria Egas
Publication: Interdisciplinary Neurosurgery: Advanced Techniques and Case Management, May 2021
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Endoscope-Assisted Neuroportal Transcerebellar Approach to the Fourth Ventricle: An Anatomical Study
Authors: Martina Piloni, Filippo Galiardi, Michele Bailo, Lina R Barzaghi, Anthony J Caputy, Pietro Mortini
Publication: Journal of Neurological Surgery, May 2021
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Epstein-Barr Virus-Positive Primary Central Nervous System Lymphoma in a 40-Year-Old Immunocompetent Patient
Authors: Sabastian Hajtovic, Cynthia Liu, Catherine M. Diefenbach, Dimitris G. Placantonakis
Publication: Cureus, January 2021
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Transcortical Approach to Deep-Seated Intraventricular and Intra-axial Tumors using a Tubular Retractor System: A Technical Note and Review of the Literature
Authors: Mohamed Okasha, Georgia Ineson, Jonathan Pesic-Smith, Surash Surash.
Publication: Journal of Neurological Surgery, December 2020
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Minimally Invasive Surgical Outcomes for Deep-Seated Brain Lesions Treated with Different Tubular Retraction Systems: A Systematic Review and Meta-Analysis
Authors: Lina Marenco-Hillembrand, Calder Prevatt, Paola Suarez-Meade, Henry Ruiz-Garcia, Alfredo Quinones-Hinojosa, Kaisorn L. Chaichana
Publication: World Neurosurgery November 2020
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Transcortical endoportal subchoroidal endoscope-assisted approach to the third ventricle: from virtual reality to anatomical laboratory
Authors: Carmine A Donofrio, Lucia Riccio, Jody F Capitanio, Aalap Herur-Raman, Pietro Panni, Filippo Gagliardi, Anthony J Caputy, Pietro Mortini
Publication: Journal of Neurosurgical Sciences September 2020
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Intracranial Tubular Retractor Systems: A Comparison and Review of the Literature of the BrainPath, Vycor, and METRx Tubular Retractors in the Management of Deep Brain Lesions.
Authors: Nikolas Echeverry, Samuel Mansour, Gerard MacKinnon, Jude Jaraki, Stephen Shapiro, Brian Snelling Publication:
World Neurosurgery July 2020
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Management of large intraventricular meningiomas with minimally invasive port technique: a three-case series
Authors: Ali O. Jamshidi, Andre Beer-Furlan, Douglas A. Hardesty, Leo F. S. Ditzel Filho, Luciano M. Prevedello & Daniel M. Prevedello
Publication: Neurosurgical Review, October 2020
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Minimally invasive resection of intracranial lesions using tubular retractors: a large, multi‑surgeon, multi‑institutional series
Authors: Daniel G. Eichberg, Long Di, Ashish H. Shah, Evan M. Luther, Christina Jackson, Lina Marenco‑Hillembrand, Kaisorn L. Chaichana, Michael E. Ivan, Robert M. Starke, Ricardo J. Komotar from University of Miami Miller School of Medicine, Johns Hopkins University School of Medicine, Mayo Clinic, Sylvester Comprehensive Cancer Center, University of Miami Hospital
Publication: Journal of Neuro-Oncology, June 2020
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Use of Tubular Retractors for Minimally Invasive Resection of Deep-Seated Cavernomas
Authors: Daniel G Eichberg, Long Di, Ashish H Shah, Michael E Ivan, Ricardo J Komotar, Robert M Starke
Publication: Operative Neurosurgery. Published June 1, 2020
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Use of Vycor Tubular Retractors in the Management of Deep Brain Lesions: A Review of Current Studies
Authors: Stephen Z. Shapiro, Kenneth A. Sabacinski, Samuel A. Mansour, Nikolas B. Echeverry, Sumedh S. Shah, Alan A. Stein, Brian M. Snelling
Publication: World Neurosurgery, January 2020
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Transparent Tubular Retractor in Cranial Surgery: A Retrospective Analysis
Authors: Shashivadhanan, S. Department of Neurosurgery, Command Hospital Air Force, Bengaluru, Karnataka, India
Publication: Indian Journal of Neurosurgery, December 2019
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Use of Tubular Retractor for Resection of Colloid Cysts: Single Surgeon Experience and Review of the Literature
Authors: Eichberg, D. G., Buttrick, S. S., Sharaf, J. M., Snelling, B. M., Shah, A. H., Ivan, M. E., & Komotar, R. J. Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
Publication: Operative Neurosurgery, May 2019
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Infradentate Approach to the Fourth Ventricle
Authors: Ali O Jamshidi, MD, Blake Priddy, BS, Andre Beer-Furlan, MD, Daniel M Prevedello, MD
Publication: Operative Neurosurgery, Volume 16, Issue 2, February 2019
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Contemporary Surgical Management of Deep-Seated Metastatic Brain Tumors Using Minimally Invasive Approaches
Authors: Marenco-Hillembrand, L., Avarado-Estrada, K, Chaichana, K.L. Department of Neurosurgery, Mayo Clinic, Jacksonville, FL
Publication: Front Oncol, November 2018
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Use of Tubular Retractor for Resection of Deep-Seated Cerebral Tumors and Colloid Cysts: Single Surgeon Experience and Review of the Literature
Authors: Daniel G. Eichberg, MD, Simon Buttrick, MD, G Damian Brusko, BS, Michael Ivan, MD, Robert M. Starke, MD, Ricardo J. Komotar, MD of the Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
Publication: World Neurosurgery, April 2018
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Comparison of endoscopic- versus microscopic-assisted resection of deep-seated intracranial lesions using a minimally invasive port retractor system
Authors: Christopher Hong BA, Daniel M. Prevedello MD, J Bradley Elder MD; The Ohio State University Wexner Medical Center Department of Neurological Surgery
Publication: Journal of Neurosurgery March 2016
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Use of a Minimally Invasive Retractor System for Retrieval of Intracranial Fragments in Wartime Trauma
Authors: George N. Rymarczuk, MD, Laurence Davidson, MD, Meryl A. Severson, MD, Rocco A. Armonda, MD
Publication: World Neurosurgery, May 2015
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Endoscopic hematoma evacuation in patients with spontaneous supratentorial intracerebral hemorrhage
Authors: Wei-Hsin Wang, Yi-Chieh Hung, Sanford P.C. Hsu, Chun-Fu Lin, Hsin-Hung Chen, Yang-Hsin Shih, Cheng-Chia Lee Taipei Veterans General Hospital, and National Yang-Ming University School of Medicine. Taipei, Taiwan
Publication: Journal of the Chinese Medical Association, February 2015 Volume 78, Issue 2, Pages 101–107
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A 3D endoscopic transtubular transcallosal approach to the third ventricle
Authors: Alireza Shoakazemi, Alexander I. Evins, Justin C. Burrell, Philip E. Stieg, and Antonio Bernardo
Publication: Journal of Neurosurgery, March 2015 Vol. 122 No. 3: Pages 564-573
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A Purely Endoscopic and Simultaneous Transsphenoidal and Transcranial Keyhole Approach for Giant Pituitary Adenoma Resection: A Technical Case Report
Authors: Takeuchi, K., Nagatani, T., Watanabe, T., Okumura, E., Sato, Y., Wakabayashi, T. Dept of Neurosurgery, Nagoya Univ. Graduate School of Medicine, Nagoya, Japan; Dept. of Neurosurgery, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Japan
Publication: NMC Case Report Journal, January 2015
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Rigid endoscopic resection of deep-seated or intraventricular brain tumors
Authors: Yukinori Akiyama, Masahiko Wanibuchi, Takeshi Mikami, Yoshifumi Horita, Katsuya Komatsu, Kengo Suzuki, Shunya Otaki, Nobuhiro Mikuni Department of Neurosurgery, Sapporo Medical University, School of Medicine, Hokkaido, Japan
Publication: Neurological Research, 2015 Vol. 37 No. 3: Pages 278-282
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Minitubular Transcortical Microsurgical Approach for Gross Total Resection of Third Ventricular Colloid Cysts: Technique and Assessment
Author: Aaron A. Cohen-Gadol, M.D., M.Sc. Goodman Campbell Brain and Spine, Indiana University Department of Neurological Surgery, Indianapolis
Publication: World Neurosurgery, January 2013
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Usage of a Minimally Invasive Tubular Retraction System for Deep-Seated Tumors in Pediatric Patient
Authors: Pablo Recinos, M.D., of the Cleveland Clinic and George Jallo, M.D., of Johns Hopkins University
Publication: Journal of Neurosurgery: Pediatrics, May 2011
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Minimally Invasive Trans-Portal Resection of Deep Intracranial Lesions
Authors: S.M Raza, P.F. Recinos, J. Avondano, H. Adams, G. I. Jallo and A. Quinones- Hinojosa
Publication: Minimally Invasive Neurosurgery, February 2011
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Use of Transparent Plastic Tubular Retractor in Surgery for Deep Brain Lesions: A Case Series
Author: Konstantin V. Slavin, MD et al of Dept of Neurosurgery, University of Illinois at Chicago
Publication: Surgical Technology International, April 2010
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White papers, Other Studies

Resection of an Intraventricular Metastatic Tumor with Minimally Invasive Port Technique: 2-Dimensional Operative Video
Authors: Ricardo H. Menendez, Joaquin Chuang, Daniel D’Osvaldo, Karina Breitburd, Pablo Rubino
Publication: World Neurosurgery December 2023
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Surgical advances in the management of brain metastases
Authors: Ng, P.R., Choi, B.D., Aghi, M.K., Nahed, B.V
Publication: Neuro Oncology Advances November 2021
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Intraparenchymal hemorrhage evacuation using the Vycor retractor system
Authors: Lydia Kaoutzani, Tyler Sparks, Scott Rahimi
Publication: poster presented at the CNS annual meeting October 2021
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Risks of Endoscopic Temporal Ventriculocisternostomy for Isolated Lateral Ventricle: Anatomic Surgical Nuances
Authors: Takatoshi Hasegawa, Toshihiro Ogiwara, Alhusain Nagm, Tetsuya Goto, Tatsuro Aoyama, Kazuhiro Hongo. From the Department of Neurosurgery, Shinshu University School of Medicine, Matsumoto, Japan; and Department of Neurosurgery, Al-Azhar University Faculty of Medicine, Nasr, Cairo, Egypt
Publication: World Neurosurgery, February 2018
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A Transtubular Anterior Interhemispheric Approach
Authors: Alexander I. Evins, Philip E. Stieg, Antonio Bernardo of the Department of Neurosurgery, Weill Cornell Medicine, New York, New York
Publication: Journal of Neurological Surgery, March 2017
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Frameless Stereotactic Insertion of Viewsite Brain Access System with Microscope-Mounted Tracking Device for Resection of Deep Brain Lesions: Technical Report
Authors: Tim White, Shamik Chakraborty, Rohan Hall, Andrew A Fanous, John Boockvar and David J. Langer, of Hofstra Northwell School of Medicine
Publication: Cureus, February 2017
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Fully Endoscopic Freehand Evacuation of Spontaneous Supratentorial Intraparenchymal Hemorrhage
Authors: Filippo Flavio Angileri, Felice Esposito, Stefano Maria Priola, Giovanni Raffa, Daniele Marino, Rosaria Viola Abbritti, Maria Giusa, Antonino Germano`, Francesco Tomasello Division of Neurosurgery, Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
Publication: World Neurosurgery October 2016
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Endoscope-assisted resection of cavernous angioma at the foramen of Monro: a case report
Authors: Yuji Matsumoto, Kazuhiko Kurozumi, Yousuke Shimazu, Tomotsuga Ichikawa and Isao Date of the Okayama University Graduate School of Medicine, Japan
Publication: SpringerOpen, October 2016
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Single-Port Endoscopic Technique for the Treatment of Primary Intracerebral Hemorrhage
Authors: Juan Antonio Ponce-Gomez M.D. Luis Alverto Ortega-Porcayo M.D. Victor Alcocer-Barradas M.D. Juan Barges-Coll M.D. Juan Luis Gomez Amador M.D. of Department of Neurological Surgery, National Institute of Neurology and Neurosurgery “Manuel Velasco Suarez” Mexico City, Mexico November 2015
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Exoscope-Assisted Surgery for Deep-Seated Intraparenchymal Tumor
Authors: Hideo Osada, Kimihiro Nagatani, Terushige Toyooka, Kojiro Wada, Naoki Otani, Arata Tomiyama, Satoshi Tomura, Hideaki Ueno, Kentaro Mori of the Department of Neurosurgery, National Defense Medical College and Department of Neurosurgery, Kuki General Hospital
Publication: Japanese Journal of Neurosurgery, 2015, Vol. 24 No. 9 p. 623-631
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Microsurgical resection for lateral ventricular meningiomas with neuronavigation and tubular retractor system
Authors: Xiong Tao, Wanggou Siyi, Chen Xiaoyu, Peng Zefeng, Liu Qing, Yuan Xianrui, Li Xuejun, Department of Neurosurgery, Xiangya Hospital, Central South University; Changsha, China
Publication: Chinese Journal of Neurosurgery, April 2015 Volume 31, No.4
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Vycor Viewsite TC: Endoscope Intraparenchimal Brain Tumor Resection with Image Guidance, (Case 2)
Author: Daniel Prevedello, M.D., Director of the Minimally Invasive Cranial Surgery Program at the Ohio State University
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Vycor Viewsite TC: Endoscope-guided Intraparenchimal Brain Tumor Resection, (Case 1)
Author: Daniel Prevedello, M.D., Director of the Minimally Invasive Cranial Surgery Program at the Ohio State University
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